LAND RESOURCES AND AGRICULTURE
Land serves various purposes, from production to residence and recreation, and is essential for human activities. Different land uses, such as agriculture, forestry, settlements, and infrastructure, reflect the diverse ways in which land is utilized.
Land Use Categories
- Forests: This category includes areas designated by the government for forest growth, which may differ from actual forest cover. Land revenue records primarily follow government demarcations rather than the actual extent of forested areas.
- Barren and Wastelands: These are lands unsuitable for cultivation due to factors like rugged terrain, desertification, or ravines. Despite their potential, existing technology limits their agricultural use.
- Non-agricultural Uses: This category encompasses land used for settlements (rural and urban), infrastructure (roads, canals), industries, and commercial activities. Growth in secondary and tertiary sectors contributes to the expansion of this land use.
- Permanent Pastures and Grazing Lands: Typically owned by village councils or governments, this land serves as common grazing areas. Only a small portion is privately owned.
- Miscellaneous Tree Crops and Groves: Orchards and fruit tree plantations fall under this category, mostly privately owned.
- Culturable Wasteland: Land left uncultivated for over five years, which can be reclaimed and brought back into cultivation through improvement practices.
- Current Fallow: Land left uncultivated for a single agricultural year or less, allowing it to rejuvenate naturally.
- Fallow other than Current Fallow: Cultivable land left uncultivated for more than a year but less than five years. If left unused for over five years, it becomes categorized as a culturable wasteland.
- Net Area Sown: The physical area where crops are sown and harvested constitutes the net sown area, a crucial indicator of agricultural activity.
1. Factors Influencing Land-Use Changes
Land use patterns are shaped by various economic factors, including population growth, technological advancements, and shifts in sectoral composition. These changes influence how land is utilized over time.
- Growth of the Economy: Economic expansion, driven by factors like population growth and technological advancements, increases the demand for land resources. Marginal lands may come under use as pressure on land intensifies.
- Sectoral Composition Changes: Developing economies witness faster growth in secondary and tertiary sectors compared to the primary sector, leading to a shift of land from agricultural to non-agricultural uses. Urbanization and industrialization result in the conversion of agricultural land for building purposes, particularly around urban areas.
- Persistent Pressure on Agricultural Land: Despite the declining contribution of agriculture to GDP, the demand for agricultural land remains high due to a slow decline in the share of the population dependent on agriculture. and Increasing population requiring food production.
Land-Use Changes in India
India has experienced significant economic changes over the past few decades, impacting land utilization trends.
Key Observations from 1950–51 to 2014–15
- Increase in Non-agricultural Uses: Rapid growth in industrial and service sectors, along with urban expansion, drives an increase in non-agricultural land use. Urban and rural settlements contribute to this expansion, leading to a decline in wastelands and agricultural land.
- Expansion of Forest Area: Increase in demarcated forest areas contributes to the rise in forest land, although it may not reflect actual forest cover growth.
- Fluctuations in Current Fallow: Variability in rainfall and cropping cycles results in fluctuating trends in current fallow lands.
- Rise in Net Area Sown: The recent increase in net area sown is attributed to utilizing culturable wastelands for agricultural purposes. Previously, net area sown was declining due to the expansion of non-agricultural uses, particularly construction activities.
Categories Registering Decline
- Barren and Wastelands, Culturable Wastelands: Increased pressure on land leads to declines in wastelands and culturable wastelands over time.
- Pastures, Grazing Lands: Encroachment for cultivation reduces pasture and grazing lands, driven by agricultural expansion.
These observations highlight the dynamic interplay between economic growth, urbanization, and land-use changes in India.
India experiences three distinct crop seasons in its northern and interior regions: kharif, rabi, and zaid.
- Kharif Season Coincides with the Southwest Monsoon, typically from June to September. Suitable for tropical crops like rice, cotton, jute, jowar, bajra, and tur.
- Rabi Season Begins with winter in October-November and lasts until March-April. Facilitates the cultivation of temperate and sub-tropical crops such as wheat, gram, and mustard.
- Zaid Season: Short-duration summer cropping season after the rabi harvest. Includes watermelons, cucumbers, vegetables, and fodder crops on irrigated lands.
Southern India: In contrast to the distinct seasons in the north, southern India's climate allows for tropical crop cultivation year-round if sufficient soil moisture is available. This region doesn't have a specific zaid season as crops can be grown multiple times in a year due to adequate soil moisture.
Types of Farming
- Irrigated Farming Can be protective (supplementary) or productive (aiming for high productivity). Protective Irrigation Supplements rainfall to protect crops from soil moisture deficiency. Productive Irrigation Provides ample soil moisture for high crop yields, requiring higher water input.
- Rainfed Farming In Dryland Farming Regions with annual rainfall < 75 cm, growing hardy crops like ragi, bajra, moong, and gram. Wetland Farming Regions with excess rainfall during the rainy season, growing water-intensive crops like rice, jute, and sugarcane, and practising aquaculture in freshwater bodies.
4. Foodgrains in India
Foodgrains are a cornerstone of the Indian agricultural economy, occupying approximately two-thirds of the total cropped area in the country. They are predominant crops across all regions, catering to both subsistence and commercial agricultural practices. Food grains are broadly classified into cereals and pulses.
4.1. Cereals
Cereals cover around 54% of the total cropped area in India and are further categorized into fine grains (rice, wheat) and coarse grains (jowar, bajra, maize, ragi), among others.
Rice
- Staple food for the majority of the Indian population.
- Cultivated across various agro-climatic regions, ranging from sea level to 2,000 m altitude.
- Significant rice-producing states include West Bengal, Uttar Pradesh, and Punjab.
- Introduced in irrigated areas of Punjab and Haryana during the Green Revolution, resulting in high yields.
Wheat
- Second most important cereal crop after rice.
- Primarily a rabi crop grown during the winter season.
- Concentrated in North and Central India, with high yields in Punjab and Haryana.
- Rainfed cultivation in Himalayan highlands and parts of Madhya Pradesh.
Jowar
- Main food crop in semi-arid regions of central and southern India.
- Maharashtra is the largest producer, followed by Karnataka, Madhya Pradesh, Andhra Pradesh, and Telangana.
- Grown as both kharif and rabi crops, with low yields in rainfed regions south of Vindhyachal.
Bajra
- Thrives in hot and dry climates of northwestern and western India.
- Major producers include Maharashtra, Gujarat, Uttar Pradesh, Rajasthan, and Haryana.
- Resilient to dry spells and drought, with low yields in rainfed regions like Rajasthan.
Maize
- Grown under semi-arid conditions and over inferior soils.
- Cultivated across India except Punjab and eastern regions.
- Leading producers are Karnataka, Madhya Pradesh, Bihar, Andhra Pradesh, Telangana, Rajasthan, and Uttar Pradesh.
4.2. Pulses
Pulses are vital sources of protein and play a crucial role in Indian agriculture, mainly grown in drylands.
Gram
- Cultivated in subtropical areas during the rabi season.
- Mainly rainfed crops in central, western, and northwestern India.
- Leading producers include Madhya Pradesh, Uttar Pradesh, Maharashtra, Andhra Pradesh, Telangana, and Rajasthan.
Tur (Arhar)
- Also known as red gram or pigeon pea.
- Cultivated in marginal lands under rainfed conditions in central and southern states.
- Maharashtra is the primary contributor to production, followed by Uttar Pradesh, Karnataka, Gujarat, and Madhya Pradesh.
4.3. Oilseeds
Oilseeds play a crucial role in the production of edible oils and are grown across specific regions in India. They contribute to about 14% of the total cropped area in the country and include key crops such as groundnut, rapeseed and mustard, soybean, and sunflower.
Groundnut
- Accounts for about 18.8% of the global groundnut production.
- Primarily a rainfed kharif crop in drylands, but also cultivated during the rabi season in southern India.
- Leading producers include Gujarat, Rajasthan, Tamil Nadu, Telangana, Andhra Pradesh, Karnataka, and Maharashtra.
- Higher yields were observed in partially irrigated areas like Tamil Nadu compared to regions with lower irrigation levels.
Rapeseed and Mustard
- Encompasses varieties like rai, sarson, toria, and taramira.
- Subtropical crops cultivated during the rabi season in north-western and central India.
- Frost-sensitive with yields varying annually, stabilized by improved irrigation and seed technology.
- Rajasthan contributes significantly to production, along with Haryana and Madhya Pradesh.
Soyabean
- Primarily cultivated in Madhya Pradesh and Maharashtra, which account for about 90% of the total soybean output in India.
- A significant oilseed crop contributing to the edible oil industry.
Sunflower
- Concentrated cultivation in Karnataka, Andhra Pradesh, Telangana, and adjacent areas of Maharashtra.
- Minor crops in northern regions but with high yields due to irrigation facilities.
These oilseeds are strategically grown in specific regions known for their suitability to these crops, with varying levels of irrigation and technology adoption influencing their yields and contribution to the overall edible oil production in India.