eprintid: 4529
rev_number: 9
eprint_status: archive
userid: 30
dir: disk0/00/00/45/29
datestamp: 2011-11-30 06:30:20
lastmod: 2011-11-30 06:30:20
status_changed: 2011-11-30 06:30:20
type: article
metadata_visibility: show
contact_email: Library-ICRISAT@CGIAR.ORG
item_issues_count: 0
creators_name: Sahrawat, K L
icrisatcreators_name: Sahrawat, K L
affiliation: ICRISAT(Patancheru)
country: India
title: Criteria for Assessment of the Residual Value of Fertilizer Phosphorus
ispublished: pub
subjects: s1.4
subjects: s2.11
subjects: s2.5
full_text_status: restricted
keywords: Dry mailer yield, P response, P uptake, rainfed cropping, Sorghum bicolor, Vertisol.


abstract: 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
date: 2000
date_type: published
publication: Journal of the Indian Sociely of Soii Science
volume: 48
number: 1
publisher: Indian Sociely of Soii Science
pagerange: 113-118
refereed: TRUE
issn: 0974-0228
official_url: http://www.indianjournals.com/ijor.aspx?target=ijor:jisss&volume=48&issue=1&article=022
related_url_url: http://scholar.google.co.in/scholar?hl=en&q=allintitle%3A+%22Criteria+for+Assessment+of+the+Residual+Value+of+Fertilizer+Phosphorus%22&btnG=Search&as_sdt=0%2C5&as_ylo=&as_vis=0
related_url_type: author
citation:   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     
document_url: http://oar.icrisat.org/4529/1/J_Ind_soc_sc_48_1_113-118_2000.pdf