Punjab is one of the most fertile regions in India, where wheat, rice, sugar cane, fruits and vegetables are grown and it is called the “Granary of India” or “India’s bread-basket”. Rice and wheat are double cropped in Punjab with rice stalks being burned off over millions of acres prior to the planting of wheat. This widespread practice is polluting and wasteful. In Punjab the consumption of fertilizer per hectare is 223.46 kg as compared to 90 kg nationally.

The CERES (Crop Estimation through Resource and Environment Synthesis)-rice model incorporated in DSSAT version 4.5 was calibrated for genetic coefficients of rice cultivars by conducting field experiments during the kharif season at Jorhat, Kalyani, Ranchi and Bhagalpur, the results of which were used to estimate the gap in rice yield.

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In this article we review how different management technologies like integrated nutrient management, tillage practices, mulching, addition of clay, surface compaction, conservation tillage, use of polymers, etc. can favourably modify the soil physical properties like bulk density, porosity, aeration, soil moisture, soil aggregation, water retention and transmission properties, and soil processes like evaporation, infiltration, run-off and soil loss for better crop growth and yield.

From late colonial rent reliefs and agricultural researches to the recent land acquisition bill and the "second green revolution," Indian agriculture has seen several transitions. This paper tracks detailed quantitative and qualitative evidence on long-term shifts in agricultural practices, yields and land relations in Dhantala, a village in western Uttar Pradesh, from the 1930s to 2012. This is done with the help of family and kutcherry records, elders' recall and surveys as well as the interviews conducted personally in three revisits since 1989.

Recolonisation of soil by macrofauna (especially ants, termites and earthworms) in rehabilitated open-cut mine sites is inevitable and, in terms of habitat restoration and function, typically of great value. In these highly disturbed landscapes, soil invertebrates play a major role in soil development (macropore configuration, nutrient cycling, bioturbation, etc.) and can influence hydrological processes such as infiltration, seepage, runoff generation and soil erosion.

Biochar, a carbon-rich, porous pyrolysis product of organic residues may positively affect plant yield and can, owing to its inherent stability, promote soil carbon sequestration when amended to agricultural soils. Another possible effect of biochar is the reduction in emissions of nitrous oxide (N2O). A number of laboratory incubations have shown significantly reduced N2O emissions from soil when mixed with biochar.

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