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Natural Resource Management In India

March 13, 2008 by Arun Pal Singh 

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In research efforts under natural resource management, soil maps of 12 districts in seven states were prepared for alternate land-use options and crop zoning, and the soil-erosion status map of Assam and Tripura was prepared for undertaking appropriate soil-conservation measures. Installation of mechanical and vegetative measures rehabilitated 48 percent of wasteland to cultivation. Conservation measures were also developed for rehabilitation of degraded hillocks in the Eastern Ghats.

In different rainfed oilseed-based cropping systems, integrated nutrient management (INM) involving use of various sources of organic manures was effective in increasing yield. An integrated soil-water-atmosphere-plant model was developed for understanding irrigation requirement of wheat.

The integrated nutrient management approach considerably reduced the nitrogen requirement of rainfed sorghum and greengram.

Research on soil salinity in coastal ecosystem led to sustenance of rice and wheat yields in reclaimed alkali soils, identification of causes and remedial measures for re-modification of reclaimed sodic soils, possible use of urban and industrial effluents in agriculture, and improvement in water productivity in salt-affected irrigated lands with laser land leveling. Besides, salt-tolerant varieties of rice and mustard have been released/dentifies.

Sapota and guava possessed more tolerance than other fruits in the costal saline soil.

Under alternate land-use systems, agri-horti and agroforestry options were developed for rainy-season sorghum as the area under this crop is declining due to erratic rainfall. A rural bio-resource centre was set up in a village of Nalgonda district, for mass propagation of the elite teak plants through multiplication in a shade hosue. Aerobic rice-based cropping system.

Green-manuring with identified genotypes of Sesbania and Crotalaria increased the yield of rice-wheat system by 24 percent. In rice-wheat system, diversification option were worked out for improving productivity and resource-use efficiency to mitigate its second-generation problems in Indo-Gangetic plains. On-line database was developed for crops and cropping systems.

The control of obnoxious weed Parthenium with Mexican beetle led to restoration of native vegetation at several places in Madhya Pradesh. Single application of Fenoxaprop was highly effective in controlling barnyard grass. The interventions of central arid zone research institute helped Rajasthan state mineral development corporation in rehabilitating a wasteland, therapy increasing the greenery, control erosion and providing means for livelihood support to the local people.

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