Variable rate fertilizer application technology for nutrient management:A review

作     者：Pranav Pramod Pawase Sachin Madhukar Nalawade Girishkumar Balasaheb Bhanage Avdhoot Ashok Walunj Pravin Bhaskar Kadam Anil G Durgude Mahesh R Patil 

作者机构：Department of Farm Machinery and Power EngineeringDr.ASCAETMPKVRahuri(MS)India CAAST-CSAWMMPKVRahuri(MS)India Department of Soil Science and Agricultural ChemistryMPKVRahuri(MS)India Department of StatisticsMPKVRahuri(MS)India 

出 版 物：《International Journal of Agricultural and Biological Engineering》 (国际农业与生物工程学报（英文）)

年 卷 期：2023年第16卷第4期

页      面：11-19页

核心收录：

学科分类：09[农学] 0903[农学-农业资源与环境] 090301[农学-土壤学] 

基　　金：CAAST-CSAWM MPKV Chhatrapati Shahu Maharaj Research Training and Human Development Institute, सारथी 

主　　题：nutrient sensor prescription map spatial variation VRT 

摘      要：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.