Record Details

Criteria for Assessment of the Residual Value of Fertilizer Phosphorus

OAR@ICRISAT

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Field Value
 
Relation http://oar.icrisat.org/4529/
http://www.indianjournals.com/ijor.aspx?target=ijor:jisss&volume=48&issue=1&article=022
 
Title Criteria for Assessment of the Residual Value of Fertilizer Phosphorus
 
Creator Sahrawat, K L
 
Subject Sorghum
Soil Science
Fertilizer Appications
 
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
PeerReviewed
 
Format application/pdf
 
Language en
 
Rights —
 
Identifier http://oar.icrisat.org/4529/1/J_Ind_soc_sc_48_1_113-118_2000.pdf
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