17-05-2013, 12:46 PM
Integrated Nutrient Management for Soil Quality Improvement and Sustainable Crop Production
Integrated Nutrient.ppt (Size: 770.5 KB / Downloads: 32)
Facts of INM for Soil Quality and Sustainability:-
In India, fertilizer use is inadequate, imbalanced, non integrated and poorly managed.
In todays scenario of agriculture, neither chemical fertilizers alone nor the organic sources exclusively can achieve the production sustainability under highly intensive cropping system.
The interaction advantage of combined use of organics and inorganic have been well established.
‘INM’ is helpful in arresting the emerging deficiency of nutrients other than N, P and K, favorably optimizing the physical, chemical and biological environment of soils and bringing economy and efficiency in fertilizer.
Decreasing soil fertility has also raised concerns about the sustainability of agriculture production at current level.
‘INM’ concept is economically favorable, environmental friendly, sustaining productivity and enhancing quality of soil.
Limitations in implementation of ‘INM’
Small Holding
Poor infra structure facilities
Lack of participation approach
Low availability of organic resources
Lack of knowledge of nutrient dynamic in different cropping system
Non availability of resources at the time such as fertilizer, seed and electric supply
Supply of spurious material such as outdated biofertilizers
Lack of knowledge of response behavior of various organic sources in different crop .
Lack of time and availability of field in intensive cropping system
Proper status of farmer to give full requirement of nutrient to their crops.
Conclusion
Sustainable crop production is essential for food security, nutritional security and environmental safety.
for achieving sustainability, INM is inevitable due to rising cost of fertilizers, declining fertility of soil and degrading soil quality.
Models of INM for well defined agro ecological zones and cropping system should be developed to provide guide line for rational and efficient fertilizer use.
Country have sufficient potential of organic resources to fulfill about 25 % of nutrient demand of crops.
The direct, residual and cumulative effects of added manures and fertilizers should be considered While formulating the nutrient management programme in the given cropping system.