What is Ssnm in agriculture?
What is Ssnm in agriculture?
Site specific nutrient management (SSNM) is fundamental to precision nutrient applications in different crops. SSNM provides an approach for need-based feeding of crops with nutrients while recognizing the inherent spatial variability.
What is SSNM?
Site-specific nutrient management (SSNM) is a plant-based approach that provides principles that can be used everywhere. SSNM also gives guidelines for effective N, P, and K management so that rice farmers give their crop the right amount of essential nutrients.
What is site specific nutrient management?
Site Specific Nutrient Management (SSNM) is an approach of supplying plants with nutrients to optimally match their inherent spatial and temporal needs for supplemental nutrients by using different tools of SSNM such as remote sensing, GPS, GIS systems, VRT, yield monitoring.
What is blanket recommendation of fertilizer?
(SSNM) optimizes the supply of soil nutrients over space and time to match crop requirements. Thus, blanket fertilizer application recommendations may lead farmers to over-fertilize in some areas and under-fertilize in others, or apply an improper balance of nutrients for their soil or crop.
Who developed Ssnm?
SSNM was developed by researchers in the mid-1990s through a number of partnerships forged between IRRI and many national organizations. From 2001 to 2004, the initial SSNM concept was transformed to provide farmers and extension workers with a simplified plant-need-based management.
What is cropping system research?
The term cropping system refers to the crops and crop sequences and the management techniques used on a particular field over a period of years. Long-term cropping systems research projects generally involve a team of scientists of different disciplines working together to answer questions and solve problems.
What is leaf Colour chart?
The leaf color chart (LCC) is an easy-to-use and inexpensive diagnostic tool for monitoring the relative greenness of a rice leaf as an indicator of the plant N status (Alam et al. The LCC is usually a plastic, ruler-shaped strip containing four or more panels that range in color from yellowish green to dark green.
What is meant by nutrient management?
Nutrient management is the science and practice directed to link soil, crop, weather, and hydrologic factors with cultural, irrigation, and soil and water conservation practices to achieve optimal nutrient use efficiency, crop yields, crop quality, and economic returns, while reducing off-site transport of nutrients ( …
What is fertilizer recommendation?
The fertilizer recommendation are made to apply enough fertilizers to both meet the nutrient requirements of the crop and to build up the nutrient level in the soil to a critical soil test level over a planned timeframe. In this approach more fertilizer is used.
What are nitrification inhibitors?
Nitrification inhibitors are chemical compounds that slow the nitrification of ammonia, ammonium-containing, or urea-containing fertilizers, which are applied to soil as fertilizers. These inhibitors can help reduce losses of nitrogen in soil that would otherwise be used by crops.
How many types of cropping systems are there?
There are more than 30 types of cropping systems found in the country such as rice-wheat, rice-rice, rice-gram, rice-mustard, rice-groundnut, rice-sorghum, pearl millet-gram, pearl millet-mustard, pearl millet-sorghum, cotton-wheat, cotton-gram, cotton-sorghum, cotton-safflower, cotton-groundnut, maize-wheat, maize- …