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Variable rate fertilizer application technology for nutrient management:A review

International Journal of Agricultural and Biological Engineering 2023年第4期16卷 11-19页

作者： Pranav Pramod Pawase Sachin Madhukar Nalawade girishkumar Balasaheb Bhanage Avdhoot Ashok Walunj Pravin Bhaskar Kadam anil g durgude Mahesh R Patil Department of Farm Machinery and Power Engineering Dr.ASCAETMPKVRahuri(MS)India CAAST-CSAWM MPKVRahuri(MS)India Department of Soil Science and Agricultural Chemistry MPKVRahuri(MS)India Department of Statistics MPKVRahuri(MS)India

The efficient and effective application of fertilizers to crops is a major ***,constant rate or equal dose of fertilizer is applied to each *** rate fertilizer application across entire field can result in over or under incorporation of *** application is influenced by soil parameters as well as geographical variation in the *** nutrient management depends on selection of nutrient,application rate and placement of nutrient at the optimal distance from the crop and soil *** rate technology(VRT)is an input application technology that allows for the application of inputs at a certain rate,time,and place based on soil properties and spatial variation in the field or *** are two approaches for implementing VRT,one is sensor based and another is map *** sensor based approach;with suitable sensors,measures the soil and crop characteristics on-the-go calculating the amount of nutrients required per unit area/plant and micro controlling unit which uses suitable algorithms for controlling the flow of fertilizer with required amount of *** map based approach;grid sampling and soil analysis are used to create a prescription *** to the soil and crop conditions,the microcontroller regulates the desired application *** sensor-based VRT system includes a fertilizer tank,sensors,gPS,microcontroller,actuators,and other components,whereas the map-based system does not require an on-the-go *** approaches of VRT for fertilizer application in orchards and field crops are reviewed in this *** use of this advance technology surely increases the fertilizer use efficiency;improve crop yield and profitability with reduced environment impacts.

关键词： nutrient sensor prescription map spatial variation VRT

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