Division of Agricultural Meteorology Indian Meteorological Department, Pune

Abstract : Remote sensing techniques have been operationally used in many countries to provide basic information on crops, soils, water resources and the impact of drought and flood on agriculture. Procedures for pre-harvest acreage estimation of major crops such as wheat, rice and sorghum, using sampling and digital techniques based on remotely sensed data have improved greatly. Remote sensing can also provide data related to ocean and coastal zones like identifying potential area of fish concentration, environmental degradation that takes place in coastal zones due to over exploitation, etc. Other promising areas of applications include, disaster assessment, drought monitoring, environmental monitoring, forestry information, etc. all of which have advanced significantly.

The main users of crop maps and yield forecasts are governments and agribusiness who use them to assess demand, anticipate prices and plan the use of resources. Farmers do have a considerable interest, in knowing about problems in crops, and developments of the vegetation index concept could provide valuable information in stress management, for example in assessing irrigation demand, disease, pest and weed control, and crop nutrition. This information must be delivered or made accessible in sufficient time for the user to make professional sense and use these advisories appropriately in the management process.

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