Soil Test Based Fertilizer Prescriptions through Inductive cum Targeted Yield Model for Sesamum on Alfisol  

作　　者：Adusumilli Madhavi Matli Srinivasa Chari Tumula Srijaya Pasupuleti Surendra Babu Pradip Dey 

机构地区：[1]All India Coordinated Research Project on Soil Test Crop Response,Professor Jayashankar Telangana State Agricultural University,Hyderabad 500030,India [2]All India Coordinated Research Project on Soil Test Crop Response,Agricultural Research Station,Acharya N.G.Ranga Agricultural University,Utukur 516003,India [3]All India Coordinated Research Project on Micronutrients,Professor Jayashankar Telangana State Agricultural University,Hyderabad 500030,India [4]All India Coordinated Research Project on Soil Test Crop Response,Indian Institute of Soil Science,Bhopal 462038,India

出　　处：《Journal of Agricultural Science and Technology(A)》2020年第3期115-122,共8页农业科学与技术（A）

基　　金：This work was carried out under part of AICRP on Soil Test Crop Response,ICAR at PJTSAU,Hyderabad-500030,India.

摘　　要：Studies on Soil Test Crop Response Based Integrated Plant Nutrition System(STCR-IPNS)were conducted for three years adopting the Inductive cum Targeted Yield Model,on alfisols of Unified Andhra Pradesh,Southern India during summer 2016-2018 in order to develop fertilizer prescriptions through IPNS for the desired yield targets of Sesamum under field conditions.The bases for making the fertilizer prescriptions viz.nutrient requirement(NR),contribution of nutrients from soil(Cs),fertilizer(Cf)and vermicompost(CVC)were computed using the field experimental data.Making use of these basic parameters,the fertilizer prescription equations were developed under NPK alone and under IPNS for the desired yield targets of Sesamum for a range of soil test values.The quantity of fertilizers contributed by the application of vermicompost was assessed.Nutrient requirement to produce 100 kg of sesame seed was worked out to be 10.20 kg N,3.90 kg P2O5 and 5.22 kg K2O.In the present investigation,the requirement of N was higher which is followed by K2O and P2O5.The requirement of N was 2.62 times higher than P and 1.95 times higher than K.The percent contribution of N,P and K was 12.25,15.75 and 6.00 from soils,41.68,22.85 and 59.97 from fertilizer and 9.87,6.74 and 18.65 from organic manures,respectively.Thus the Inductive cum Targeted Yield Model used to develop fertilizer prescription equations provides a strong basis for soil fertility maintenance consistent with high productivity and efficient nutrient management in farming for sustainable and enduring agriculture.

关 键 词：FERTILIZER PRESCRIPTION equations ALFISOL Soil Test Crop Response BASED Integrated Plant NUTRITION System Sesamum yield target 

分 类 号：S15[农业科学—土壤学]