relation: http://oar.icrisat.org/4529/
title: Criteria for Assessment of the Residual Value of Fertilizer Phosphorus
creator: Sahrawat, K L
subject: Sorghum
subject: Soil Science
subject: Fertilizer Applications
description: Sorghum yield and P uptake response data from a field experiment conducted at the ICRISAT farm, Patancheru (near Hyderabad) consecutively for four years (1987–1990) were used for determining the residual value of fertilizer P under rainfed cropping on a Vertisol acutely deficient in P. There were seasonal differences in the residual values of P. But more importantly, the residual P value varied depending on the criteria employed for crop response. On an average, the residual value of fertilizer P in the succeeding season was 52 per cent as effective as the fresh P when dry matter yield response was used as the criterion. The residual value of applied P was found to be 47 per cent as effective using grain yield response as the criterion, and the residual P was only 35 per cent as effective as the fresh P when total P uptake response was used as the criterion. It is suggested that the dry matter yield response of sorghum is a simple and practical criterion for determining the residual value of fertilizer P under rainfed cropping
publisher: Indian Sociely of Soii Science
date: 2000
type: Article
type: PeerReviewed
format: application/pdf
language: en
identifier: http://oar.icrisat.org/4529/1/J_Ind_soc_sc_48_1_113-118_2000.pdf
identifier:   Sahrawat, K L  (2000) Criteria for Assessment of the Residual Value of Fertilizer Phosphorus.  Journal of the Indian Sociely of Soii Science, 48 (1).  pp. 113-118.  ISSN 0974-0228     
relation: http://www.indianjournals.com/ijor.aspx?target=ijor:jisss&volume=48&issue=1&article=022