Agricultural Inputs and Productivity

• Agricultural inputs are the natural and man-made resources that enter farm production: land, soil, water, climate, labour, capital, seeds, fertilisers, power, machinery, technology and institutional support.
• Agricultural productivity is the output obtained per unit of input, most often per hectare of land, per farm worker, or per unit of all inputs combined (total factor productivity).
• Productivity is not a gift of nature alone. Fertile soil and a good climate set the base, but the quality and intensity of inputs decide how much of that potential is realised.
  • The Green Revolution (1960s–70s) turned Punjab and Haryana into food-surplus regions through HYV seeds, fertilisers, assured irrigation and credit.
  • Sub-Saharan Africa, despite vast arable land, still harvests only about 1.5 t/ha of cereals, roughly a third of the world average, because irrigation, fertiliser and machinery are scarce.
• Historically, yields were nearly stagnant in the pre-industrial, rain-dependent era. The British Agricultural Revolution (18th century) brought crop rotation, enclosure and early machinery, and laid the base for today’s input-intensive farming.

Agricultural Inputs

Agriculture as a System

• Agriculture works as an open system of inputs, processes, outputs and feedback:
  • Inputs: seed, fertiliser, water, labour, tools, energy, knowledge, skill, credit and policy.
  • Processes: ploughing, sowing, irrigating, weeding, harvesting, rearing livestock, storage and marketing.
  • Outputs: food grains, fodder, fruit, fibre, milk, meat, fish, and also by-products and wastes.
  • Feedback: yields, prices and losses tell the farmer how well the system worked. Using this experience, the farmer changes inputs and practices in the next season.
• Inputs fall into five broad groups: physical (land, soil, water, climate), biological (seeds, livestock breeds), technological (fertiliser, machinery, irrigation, ICT), socio-economic (labour, capital, markets) and institutional (land tenure, credit, research, extension, prices).
  • About 95% of the world’s food comes directly or indirectly from soils (FAO), but the gap between regions is now set mainly by technological and institutional inputs.

Classification of Agricultural Inputs

Land and Soil

• Land is the basic, non-reproducible input. Its size, fertility, slope and tenure set the scale and type of farming.
• Soil quality (nutrients, organic matter, texture, structure, depth and drainage) guides the choice of crops:
  • Alluvial soils of the Indo-Gangetic plain → wheat, rice, sugarcane.
  • Black cotton soil (regur) of the Deccan → cotton, soybean, pulses.
  • Loess of North China → wheat and millets; chernozem of Ukraine and Russia → wheat and maize.
• Soil problems reduce the effective value of this input: salinisation in Pakistan’s Indus basin and Punjab–Haryana, erosion in the Ethiopian highlands, desertification in the Sahel.
  • About a third of the world’s soils are moderately to highly degraded (FAO). Soil erosion and land degradation is therefore a direct threat to productivity.

Water and Irrigation

• Farming depends on rainfall or irrigation. Irrigation stabilises output, makes multiple cropping possible, and allows HYV seeds and fertiliser to give their full response.
• Irrigation systems by region:
  • Canal irrigation in Punjab–Haryana and the Nile valley; tube wells on the North China Plain and in the Indo-Gangetic plain.
  • Drip and sprinkler systems in Israel, California, and parts of Gujarat and Maharashtra.
• Global scenario: irrigated land is about 20% of cultivated land but yields about 40% of the world’s food (FAO).
• India: about half of the net sown area (≈52%) now has irrigation, but the rest is rainfed and low-yielding.
• Problems: over-extraction of groundwater in north-west India, the North China Plain, California’s Central Valley and the Middle East; waterlogging and salinity in canal commands.

Climate and Weather

• Temperature, rainfall and length of the growing season decide what can be grown and how many crops a year:
  • Monsoon Asia → rice with heavy summer rain; temperate grasslands (Prairies, Pampas, Steppes) → wheat and maize; Mediterranean lands → olives, citrus, grapes.
• Weather variability makes climate an unreliable input: droughts in the Horn of Africa, cyclones in Bangladesh and Odisha, heatwaves that cut India’s wheat yield in 2022, and El Niño droughts in Australia’s wheat belt.
  • Climate change is raising the cost of making this input reliable, through irrigation, insurance and tolerant varieties.

Labour

• The quantity and skill of labour shape whether farming is subsistence or commercial:
  • Labour-surplus economies (India, Bangladesh, Vietnam, Nigeria) practise intensive farming with high output per hectare but low output per worker.
    • Agriculture still employs about 42% of India’s workforce and about half of Sub-Saharan Africa’s (World Bank, 2024), against under 2% in the USA.
  • Labour-scarce economies (USA, Canada, Australia) use heavy machinery and achieve very high output per worker.
• Social changes in the labour input:
  • Feminisation of agriculture in South Asia and Africa as men migrate to cities.
  • Ageing farmers in Japan, Italy and Germany push farms towards automation and robotics.

Capital and Credit

• Capital sets the intensity of all other inputs: machinery, fertilisers, irrigation, storage and improved seed.
  • High-capital regions: the USA and Western Europe (large mechanised farms); Japan and South Korea (heavy capital on small holdings).
  • Low-capital regions: Sub-Saharan Africa and much of South Asia, with hand tools, animal power and rainfed fields.
• Credit through banks, cooperatives and microfinance (NABARD and Kisan Credit Cards in India, the Grameen Bank in Bangladesh) lets small farmers buy inputs at sowing time.

Seeds and Crop Varieties

• Seeds are the genetic foundation of productivity; every other input works through the plant’s yield potential.
• Landmark varieties and regions:
  • HYV dwarf wheat from Mexico and Punjab; IR8 and IR64 rice in South and South-East Asia.
  • GM soybean and maize in the USA, Brazil and Argentina; Bt cotton in India; drought-tolerant maize in eastern and southern Africa.
  • Genome-edited rice varieties released in India in 2025, aimed at higher yield and climate tolerance.
• Concerns: dependence on a few seed corporations, loss of landraces and crop diversity, and rising seed costs.

Fertilisers and Manures

• Fertilisers replace nutrients removed by intensive cropping. They come as organic manures (farmyard manure, compost, green manure, vermicompost), chemical fertilisers (N, P, K and micronutrients) and biofertilisers.
• Use is highly uneven (kg of nutrients per hectare of arable land, World Bank, 2023–24):
  • Egypt ≈ 600, Bangladesh ≈ 400, Brazil ≈ 400, China ≈ 390, India ≈ 215, Netherlands ≈ 270.
  • USA and the European Union ≈ 125–130, world average ≈ 136.
  • Sub-Saharan Africa below 20; Nigeria about 13 and Niger under 1.
• Overuse problems: soil acidification, nitrate pollution of groundwater, and eutrophication (the Gulf of Mexico and Baltic “dead zones”).
  • India’s skewed N:P:K ratio, caused by cheap subsidised urea, lowers the response per kilogram of nutrient.

Power, Energy and Mechanisation

• Farm power has moved from human and animal muscle to diesel and electricity and now to renewables.
  • USA and Canada: tractors, combines and GPS-guided equipment on very large farms.
  • India: electric and diesel pumpsets; solar pumps under PM-KUSUM; mechanisation limited by small, fragmented holdings, often met by custom hiring.
  • Africa: still largely hand-hoe and animal power.
• Precision and digital tools are the newest form of this input: drones for spraying (China, India’s Namo Drone Didi scheme), GPS yield mapping, sensors and robotics.
  • Vertical farming and hydroponics push this frontier further: under protected cultivation, light, water, temperature and nutrients themselves become controlled inputs.

Institutional Inputs

• Institutions decide who gets access to inputs and on what terms:
  • Land tenure and land reforms: post-war reforms in Japan, South Korea and Taiwan created owner-cultivators and raised yields; uneven reform in India still holds back some regions.
  • Price and subsidy policy: India’s MSP and fertiliser and power subsidies; the EU’s Common Agricultural Policy; US farm bills.
  • Credit and insurance: PMFBY in India, federal crop insurance in the USA.
• Institutions bridge the gap between small farmers and modern technology.

Research, Extension and Information

• Research institutions produce improved inputs: IRRI (Philippines) for rice, CIMMYT (Mexico) for wheat and maize, ICRISAT (India) for dryland crops, and the national system led by ICAR in India.
• Extension carries them to farmers: Krishi Vigyan Kendras, Kisan Call Centres, the Soil Health Card scheme, and app-based advisories.
• Countries that invest more in research grow faster. China’s farm productivity grew about 1.9% a year in 2011–2020, with roughly double the US research spending (GAP Report 2025).

Input group	Main inputs	High-input example	Low-input example
Physical	Land, soil, water, climate	Nile valley, Punjab (irrigated alluvium)	Sahel (erratic rain, poor soils)
Biological	Seeds, breeds	GM soybean in Brazil	Saved local seed in the Sahel
Technological	Fertiliser, machinery, irrigation, ICT	Netherlands, US Corn Belt	Hand-hoe farming in East Africa
Socio-economic	Labour, capital, markets	Japan, South Korea	Fragmented holdings in eastern India
Institutional	Tenure, credit, research, prices	EU CAP, US farm bills	Insecure tenure in much of Africa

Agricultural Productivity

Meaning and Related Concepts

• Agricultural productivity is the ratio of farm output to farm input. It is usually measured for an areal unit (district, state, country) and expressed per hectare, the unit FAO uses.
• Productivity is not fertility:
  • Fertility is the soil’s natural capacity to support plant growth. Productivity is the output actually achieved with inputs and management.
  • India has larger areas of fertile alluvium than South Korea, yet its cereal yield is about half of South Korea’s (3.6 against 6.5 t/ha in 2024).
• Productivity is not efficiency:
  • Productivity measures output per unit of a factor (land, labour, or all inputs).
  • Agricultural efficiency measures how well inputs are converted into output: the input–output ratio, or how close a farm or region comes to the best output possible with its inputs and environment.
  • Two farms can harvest the same 4 t/ha; the one that spent less on inputs is equally productive but more efficient.

Concept	What it measures	Typical unit	Depends mainly on
Fertility	Natural nutrient-supplying capacity of soil	Soil test values	Parent rock, climate, organic matter
Land productivity	Output per hectare	kg or t per ha	Inputs, crop choice, environment
Labour productivity	Output per worker	t or US$ per worker	Mechanisation, farm size
Efficiency	Output relative to inputs or to the best attainable	Index, ratio	Technology, management, prices
Total factor productivity	Output per unit of all inputs together	Index	Research, technology, skills, institutions

Importance of Agricultural Productivity

• Global level:
  • Food security: world food demand is projected to rise by about 50% between 2012 and 2050 (FAO), and the world population will be near 9.7 billion by 2050 (UN). Most of the extra output must come from higher yields, not new land.
  • Poverty reduction: growth that comes from agriculture is two to three times more effective at reducing extreme poverty than growth from other sectors (World Bank).
  • Climate: higher yields on existing land reduce pressure to clear forests (land sparing).
  • Trade: high-productivity countries such as the USA, the Netherlands and Brazil dominate food exports.
• National level:
  • Self-sufficiency: India’s yield gains since the Green Revolution lifted foodgrain output to a record 357.7 million tonnes in 2024–25.
  • Raw materials for agro-industries (cotton, sugarcane, oilseeds, jute).
  • Macroeconomic stability: agriculture still forms around 16–18% of India’s GVA and a larger share in much of Sub-Saharan Africa. Low productivity there means import dependence and food inflation.
• Household level: higher yields bring higher farm incomes, cheaper and more varied diets, and savings for education and health.
• Strategic level: food-price spikes have triggered unrest (2007–08 food riots; rising bread prices before the Arab Spring). Productivity is tied to SDG 2 (Zero Hunger) and SDG 1 (No Poverty).

Measures of Agricultural Productivity

• Agriculture is a multi-input, multi-output activity, so no single measure captures it. Each method stresses a different factor.

Land Productivity

• Yield per hectare, the most widely used measure.
  • Cereal yields in 2024 ranged from over 8 t/ha in the USA to under 0.6 t/ha in Niger (World Bank).
• Strength: it shows regional variation clearly. Limitation: it ignores labour and capital, and it depends on crop choice. Millet in a sub-humid area may give more tonnes than rice, yet be the poorer choice.

Labour Productivity

• Output (or value added) per agricultural worker. It shows how efficiently the workforce is used.
  • Agricultural value added per worker in 2024 (constant 2015 US$): Israel ≈ 118,000, Australia ≈ 115,000, Netherlands ≈ 86,000; China ≈ 8,100; India ≈ 2,100; Sub-Saharan Africa ≈ 1,500 (World Bank).
• Mechanised economies have low land productivity in some cases but very high labour productivity. Australia’s dryland wheat yields about 2.7 t/ha, but each worker produces a great deal.

Crop-Specific Yield

• Productivity of a single crop compares technology gaps.
  • Wheat: India about 3.5 t/ha against 7 t/ha or more in France and Germany.
  • Rice (paddy): China about 7 t/ha against India’s about 4 t/ha.
• It does not show the overall performance of a region’s agriculture.

Total Factor Productivity (TFP)

• TFP relates total output to all inputs combined (land, labour, machinery, fertiliser, energy). It captures the effect of technology, better varieties, skills and management.
• Global trend: TFP growth has slowed to about 0.76% a year over the past decade, against the 2% a year needed to meet 2050 demand sustainably (GAP Report 2025).
  • US productivity barely grew in 2011–2020, while China’s rose about 1.9% a year.
• Limitation: TFP needs detailed price and quantity data that many developing regions lack.

Input–Output Ratio and Value Productivity

• Input–output ratio: value of output divided by value of inputs. It measures economic efficiency. It is high in commercial systems such as the Netherlands and Israel and low in subsistence systems.
• Value productivity: money value of output per hectare or per worker.
  • Cut flowers in the Netherlands or vineyards in France give very high value per hectare.
  • Its weakness is that price fluctuations can change the measured “productivity” without any change on the field.

Techniques for Computing Agricultural Efficiency and Productivity

• Agricultural geographers developed composite indices to compare productivity across many crops and areal units. Each converts different crops into comparable ranks, ratios, weights or money and calorie values.

Kendall’s Ranking Coefficient Method

• Maurice G. Kendall (1939) measured crop productivity across 48 counties of England using ten crops.
• Method:
  • Rank every areal unit by yield per hectare for each selected crop (rank 1 = highest yield).
  • Add each unit’s ranks and divide by the number of crops: Ranking coefficient = (R₁ + R₂ + … + Rₙ) / n.
  • The lower the coefficient, the higher the productivity. Units are then grouped into very high, high, medium, low and very low classes.
• L. Dudley Stamp later applied the ranking coefficient to compare countries.
• Limitations: ranks ignore the size of the yield gap between units, and every crop gets equal weight whatever its area.

Enyedi’s Productivity Index

• György Enyedi (1964) related a unit’s share of production to its share of cropped area:
  • I = (Y / Yₙ) ÷ (T / Tₙ) × 100, where Y is production in the unit, Yₙ national production, T cropped area in the unit and Tₙ national cropped area.
  • An index above 100 means the unit produces more than its areal share, so its productivity is above the national level.

Shafi’s Productivity Index

• Mohammad Shafi (1960) compared yield per hectare of a unit with that of the country for selected food crops:
  • PI = (Y / T) ÷ (y / t) × 100, where Y and T are total production and area of the selected crops in the unit, and y and t the same for the country.
• Limitation: adding tonnes of different crops (rice, millets, pulses) mixes unlike quantities.

Bhatia’s Weighted Index of Agricultural Efficiency

• S. S. Bhatia (1967), working on Uttar Pradesh, weighted each crop’s yield index by its area:
  • First, the yield index of each crop: Iᵧ = (Yc / Yr) × 100, where Yc is the crop’s yield in the unit and Yr its yield in the whole region.
  • Then the efficiency index: Eᵢ = (Iᵧa·Ca + Iᵧb·Cb + … + Iᵧn·Cn) / (Ca + Cb + … + Cn), where C is the share of cropland under each crop.
• Strength: it removes Kendall’s problem of equal weights. Widely grown crops count for more.

Jasbir Singh’s Standard Nutrition Unit Method

• Jasbir Singh (1972), working on Haryana, converted the output of all food crops into calories and expressed it as the number of people it could feed:
  • A Standard Nutrition Unit (SNU) is the annual calorie requirement of an average adult.
  • Productivity = SNUs produced per unit area, a measure of the land’s carrying capacity.
• Strength: it adds unlike crops through a common nutritional currency and links productivity to population-supporting capacity.

Other Approaches

• Grain-equivalent method: John Lossing Buck (1937) converted all crops in China into their grain equivalent by relative price.
• Money-value methods: gross value of output per hectare, less cost of production, which captures economic efficiency.
• Statistical and frontier methods: production functions (Cobb–Douglas), data envelopment analysis and stochastic frontiers measure technical efficiency, the distance from the best-practice frontier.

Method	Author (year)	Basis	Strength	Weakness
Ranking coefficient	Kendall (1939)	Average rank of crop yields	Simple, combines many crops	Ignores yield gaps; equal weights
Productivity index	Enyedi (1964)	Share of output ÷ share of area	Easy relative measure	Hides crop mix
Productivity index	Shafi (1960)	Unit yield ÷ national yield	Direct comparison with nation	Adds unlike crops in tonnes
Weighted efficiency index	Bhatia (1967)	Yield indices weighted by crop area	Reflects crop importance	Needs crop-wise area data
Standard Nutrition Unit	Jasbir Singh (1972)	Calories per area ÷ adult need	Common unit; carrying capacity	Ignores non-food and cash value
Grain equivalent	Buck (1937)	Crops converted to grain by price	Combines all crops	Price-dependent

Land Capability and Land-Use Efficiency

• Land capability is the inherent potential of land for sustained use without degradation, judged by slope, soil depth, erosion hazard, drainage and climate.
  • The USDA land capability classification (1961) has eight classes: Classes I–IV are suitable for cultivation with increasing limitations; Classes V–VIII are suited to pasture, forestry or wildlife only.
• Land-use efficiency is how intensively and productively land is actually used: cropping intensity, yields, and the match between use and capability.
• The two differ:
  • Class I land under low-yield single cropping has high capability but low use efficiency.
  • Steep Class VI–VII slopes forced into annual crops may show short-term output but are being used beyond capability, which leads to erosion.
• Planning aim: use each parcel up to, not beyond, its capability. This is the logic of land capability and agro-climatic regionalisation in India.

Yield Gap and Modern Assessment

• The yield gap is the difference between potential yield (set by climate and variety with no limits), attainable yield (with best practice and available inputs) and actual farm yield.
  • Gaps are widest in Sub-Saharan Africa and eastern India, where actual yields are often a third to a half of attainable.
• Remote sensing and GIS now map crop yields field by field (India’s crop-cutting experiments are being supplemented by satellite and drone estimates under the Digital Agriculture Mission).
• Sustainability indicators sit beside output: water productivity (“more crop per drop”), soil organic carbon, nutrient-use efficiency and the carbon footprint per tonne.

Input Response and Diminishing Returns

• Inputs raise productivity only up to a point. Each additional unit of fertiliser, water or labour adds less output than the one before (the law of diminishing returns).
  • In Punjab and Haryana, fertiliser and water use kept rising after the 1990s, but yields grew slowly, which signals input fatigue and soil-health decline.
• Inputs work as packages. HYV seed responds only when water and nutrients are assured; fertiliser pays only where moisture is reliable. The Green Revolution therefore spread first to irrigated districts.
• Technology shifts the whole response curve upward. A new variety, better agronomy or precision application gives more output from the same inputs, which is what TFP growth measures.
• The policy lesson is to raise efficiency, not just quantity: balanced nutrients, micro-irrigation and better timing rather than ever-larger doses.

Determinants of Agricultural Productivity

• Productivity varies across space and time through the interaction of natural, technological, socio-economic and institutional factors.

Physical and Environmental Factors

• Relief: plains (Indo-Gangetic, North China, Mississippi) allow mechanisation and irrigation; mountains (Himalaya, Andes, Ethiopian highlands) restrict it.
• Climate: sets crop type and intensity; hazards such as drought (Sahel, Rajasthan) and frost (Canada, Russia) cut yields.
• Soils: alluvium and chernozem give high yields; laterites, podzols and desert soils need heavy correction.
• Water: irrigated areas (Punjab–Haryana, the Nile, California’s Imperial Valley) sustain multiple cropping; rainfed areas show low and variable yields.

Technological Factors

• Mechanisation, HYVs, fertilisers and pesticides, irrigation and water management, and research and extension.
• Their effect depends on packages, not single inputs. HYV seed without water or fertiliser gives little gain, as dryland India learned in the Green Revolution years.

Socio-Economic Factors

• Size and structure of holdings: consolidated large farms in the USA and Canada achieve economies of scale.
  • India’s average operational holding was only 1.08 ha (Agriculture Census 2015–16), and 86% of holdings are small or marginal.
• Labour skill and education: educated farmers adopt innovations faster; surplus low-skilled labour brings disguised unemployment.
• Capital: greenhouses in the Netherlands and precision farming in the USA against capital-poor farms in Africa.
• Markets and infrastructure: roads, storage and cold chains (US Midwest, EU) against post-harvest losses where these are missing.

Institutional and Policy Factors

• Land reforms (Japan, South Korea, Taiwan) raised efficiency; tenancy insecurity discourages investment.
• Government policy: MSP, subsidies, CAP, crop insurance and credit.
• Trade and globalisation: export orientation modernised soybean in Brazil and palm oil in Indonesia–Malaysia.

Demographic and Cultural Factors

• Population pressure in South Asia leads to intensive subsistence farming with high land but low labour productivity; low densities support extensive mechanised farming.
• Food habits (rice in monsoon Asia, wheat in Europe and North America) and global demand for coffee, cocoa and tea shape crop choice and yields.

Ecological Constraints

• Soil degradation and desertification (Sahel, western Rajasthan); nutrient imbalance from fertiliser overuse.
• Climate change: erratic rain, heat stress and floods. Australian wheat yields fall sharply in El Niño years.
• Groundwater depletion in Punjab, the North China Plain and California threatens long-term productivity.

Global Patterns of Agricultural Productivity

Classification of Countries by Cereal Yield

• On the basis of cereal yield (world average about 4.2 t/ha in 2023), countries fall into three groups:
  • High productivity (above 5 t/ha): USA, Western Europe, Egypt, China, Japan, South Korea, Bangladesh, Brazil’s commercial belts.
    • Here both environment and inputs work together. Egypt’s Nile alluvium is entirely irrigated. France, Germany and South Korea do not have naturally rich soils (podzolic and leached soils are common), yet heavy inputs place them among the world’s leaders.
  • Medium productivity (3–5 t/ha): India, Pakistan, Vietnam, Indonesia, Mexico, Argentina, Turkey.
    • These countries are raising input use steadily, but large rainfed areas pull the average down.
  • Low productivity (below 3 t/ha): most of Sub-Saharan Africa, parts of Central and West Asia, and dryland exporters such as Australia whose yields are low but whose labour productivity is high.
• Intra-regional disparities are sharp in developing countries:
  • In India, irrigated Punjab, Haryana and western Uttar Pradesh have yields far above the national average, while rainfed tracts of Rajasthan, Jharkhand and the north-eastern hills lag well behind (agricultural productivity in India).
  • In Pakistan, irrigated Punjab contrasts with arid Balochistan.
  • In Nigeria, the irrigated Niger valley contrasts with the drought-prone northern plateau.

Why Developing Countries Lag

• In most developing countries environmental suitability is high over large areas, but inputs are scarce, so output still depends heavily on rainfall and natural soil fertility.
  • Natural hazards (drought, floods, cyclones) also discourage investment in inputs, because a failed season wipes out the return.
• Where inputs are given, they go mainly to food crops. Commercial and industrial crops, livestock and horticulture often receive far less research and credit.
• Imported technology does not always fit. HYV seeds and machines designed for temperate, irrigated, large-farm conditions give poor results on small, rainfed, tropical farms.
  • The first need is indigenous inputs: locally bred varieties, appropriate small machines, and irrigation methods suited to drylands. The second is technology exchange with research centres that work on tropical conditions (CGIAR, ICRISAT, IITA).
• Present priorities have shifted from maximum yield to sustainable yield:
  • Drought-, flood- and heat-tolerant seeds, water-saving irrigation in dry areas, and soil-health-based fertiliser use.
  • Crop priorities matched to agro-climate: millets and pulses in drylands rather than water-hungry rice and sugarcane.
• Countries that combined these steps have raised cereal yields sharply: China since the 1980s, Vietnam and Bangladesh since the 1990s, and Ethiopia, whose cereal yield more than doubled between 2000 and 2020.
  • Bangladesh now harvests about 5.4 t/ha of cereals, well above India, on a far smaller and flood-prone land base.

Synthesis of Global Patterns

• Physical factors explain the base: chernozem in Ukraine, alluvium in the Ganga and Nile plains, rainfall in monsoon Asia.
• Technological factors explain most of the present gap: mechanisation in the USA, biotechnology in Brazil, greenhouses in the Netherlands.
• Socio-economic factors explain who can adopt: land reform in Japan and South Korea, against unequal land ownership in Latin America and tiny holdings in South Asia.
• Institutional support sustains the gains: the CAP in Europe, US farm subsidies, and state-led Green Revolutions in Asia.
• Trade linkages reward export-oriented productivity in Latin America, Australia and New Zealand.
• Outcome: the developed world shows high productivity on both land and labour. The developing world shows moderate to low productivity, with sharp internal contrasts such as Punjab against Bihar or the Pampas against north-eastern Brazil. Biotechnology, climate-smart and digital farming are now reshaping the map again.

High-Productivity Regions

• North America: mechanised, commercial grain farming in the Corn Belt (Iowa, Illinois) and the Wheat Belt (Kansas, the Dakotas, the Prairie Provinces). Fertile mollisols, GM crops, precision farming, infrastructure and export orientation support it.
• Western Europe: mixed and dairy farming in the UK, France, Germany and Denmark, with high fertiliser use, crop rotation and CAP support.
  • The Netherlands, with tiny land area, is the second-largest agricultural exporter by value after the USA, through greenhouse horticulture and knowledge-intensive farming.
• East Asia: Japan, South Korea and eastern China combine HYVs, irrigation and heavy fertiliser on small plots. China’s rice yield is about 7 t/ha in the Yangtze delta and Sichuan basin.
• Australia and New Zealand: mechanised wheat in the Murray–Darling basin and highly productive pastoral dairying in New Zealand. Labour productivity is very high, even where land productivity is modest.

Moderate-Productivity Regions

• South America: Brazil’s soybean revolution on the Cerrado and in Mato Grosso, sugarcane in São Paulo, and the Pampas of Argentina for wheat, maize and beef. Productivity is high in export crops, but land ownership is very unequal.
• Eastern Europe and Russia: Ukraine’s chernozem gives high wheat and maize yields (though war since 2022 has disrupted output); Russia has vast land but lower yields in harsher climates.
• South-East Asia: the rice bowls of Thailand, Vietnam and Myanmar, rising with irrigation and modern varieties.
• South Asia’s irrigated cores: Punjab–Haryana and western Uttar Pradesh in India, and Pakistan’s Punjab.

Low-Productivity Regions

• Sub-Saharan Africa: rainfed subsistence farming with little irrigation, fertiliser or machinery. Cereal yields have risen only slowly, from under 1 t/ha in the 1960s to about 1.5 t/ha today.
  • Drought-prone Sahel belts suffer recurrent crop failure.
• Rainfed South Asia: eastern and central India (parts of Bihar, Odisha, Jharkhand, Chhattisgarh) and the rainfed Deccan plateau, constrained by small holdings and erratic monsoons. India’s broader green revolution left these regions behind.
• Middle East and North Africa: water scarcity limits farming outside the Nile and other irrigated valleys. Gulf states rely on imports despite costly desert irrigation.

Region	Land productivity	Labour productivity	Key reasons
North America	Very high	Very high	Mechanisation, GM seed, mollisols, capital
Western Europe	High	High	Inputs, CAP support, R&D, mixed farming
East Asia	High	Low to medium	Irrigation, HYVs, fertiliser on small plots
Australia	Low to medium	Very high	Dry climate, huge mechanised farms
South Asia	Medium	Low	Rainfed areas, tiny holdings, surplus labour
Sub-Saharan Africa	Low	Very low	Little irrigation, fertiliser, capital or credit

Methods to Increase Agricultural Productivity

• With little scope to expand cropland, raising output per hectare and per worker is the only sustainable path. The methods are technological, institutional, infrastructural, ecological and policy-based.

Technological Methods

• Improved seeds and biotechnology: HYVs, hybrids, transgenic and genome-edited varieties tolerant of drought, salinity, flood and pests (IR64 rice, Bt cotton, submergence-tolerant Swarna-Sub1 rice).
• Balanced nutrient management: soil testing (Soil Health Card), micronutrients, biofertilisers, nano-urea and integrated nutrient management.
• Irrigation: expansion of canals, tube wells and minor irrigation, and a shift to drip and sprinkler (“Per Drop More Crop”); watershed development in semi-arid regions.
• Mechanisation: tractors, harvesters, zero-till drills and custom-hiring centres for small farmers.
• Crop diversification and multiple cropping: high-value horticulture and pulses; intercropping and relay cropping. Punjab is being pushed away from the water-hungry rice–wheat cycle towards maize, pulses and vegetables.

Institutional Measures

• Land reforms: abolition of intermediaries, tenancy security, ceilings and consolidation of holdings.
• Cooperative and collective action: Israel’s kibbutz and moshav farms, Denmark’s dairy cooperatives, India’s Farmer Producer Organisations (FPOs).
• Credit and insurance: NABARD, Kisan Credit Cards, the Grameen Bank model, and PMFBY.

Infrastructure and Markets

• Rural roads, warehouses and cold chains to cut post-harvest losses; agro-processing near production centres.
• Digital agriculture: weather and price advisories, e-NAM markets, and precision farming with GIS, remote sensing and drones.

Ecological and Sustainable Methods

• Soil and water conservation: contour bunding, terracing, mulching, check dams and rainwater harvesting.
• Climate-resilient agriculture: tolerant varieties, shifted sowing dates, crop insurance and diversified farming systems.
• Sustainable practices: integrated pest management, conservation tillage, agroforestry, and organic and natural farming where they suit local conditions.
  • In rainfed tracts, dryland farming techniques (in-situ moisture conservation, short-duration varieties and contingency crop plans) are the main route to higher and steadier yields.

Policy Measures

• Price and subsidy policy: MSP and input subsidies, reformed towards direct benefit transfer and balanced nutrients.
• Research and extension: stronger agricultural universities, ICAR institutes, KVKs and the international CGIAR centres.
• Trade integration: access to export markets encourages modernisation, as in Brazil’s soybean belt and Vietnam’s rice and coffee sectors.