Direct and residual effect of fertilization sources and time of application on equivalent yield of rice-potato cropping sequence and soil properties

• Published in: Indian Journal of Hill Farming (India) Vol. 16; no. 1-2
• Main Authors: Rautray, S.K., Central Rice Research Institute, Kamrup (India). RRLRRS, Swain, D.K., Indian Institute of Technology, Kharagpur (India). Agricultural and Food Engineering Department
• Format: Journal Article
• Language: English
• Published: 01.01.2003
• Subjects: CROPPING SYSTEMS; FERTILIZER APPLICAION; FLYASH; ORGANIC FERTILIZERS; ORYZA SATIVA; POTATO; RESIDUAL EFFECTS; RICE; SOIL CHEMICOPHYSICAL PROPERTIES; YIELDS
• ISSN: 0970-6429

A study was conducted at Kharagpur during 1996-98 on direct effect of item of application of different organic materials under integrated nutrient management with fly ash as supplement on yield of rice and residual effect on yield of potato and soil properties. Incorporation organic materials in between 30 days before planting of rice was equally beneficial on equivalent rice grain yield or rice-potato cropping sequence. Integrated nutrient management involving organic material and chemical fertilizers with fly ash @ 10 t/ha as supplement applied to rice crop followed by recommended chemical fertilizer to potato crop was superior to continuous use of chemical fertilizers on equivalent nutrient basis. Maximum equivalent rice grain yield of 12.6 t ha'\ was realized under integrated use of paddy straw 5 t, complimentary chemical fertilizer (57.5 kg Nand 18.5 Kg P) and fly ash 10 t for rice followed by 125: 46 : 104 kg N:P:K through chemical fertilizers for potato.