eprintid: 1854
rev_number: 8
eprint_status: archive
userid: 14
dir: disk0/00/00/18/54
datestamp: 2011-09-22 08:15:24
lastmod: 2011-09-22 08:15:24
status_changed: 2011-09-22 08:15:24
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: Residual phosphorus and management strategy for grain sorghum on a vertisol
ispublished: pub
subjects: s1.4
full_text_status: restricted
abstract: Fertilizer phosphorus (P) use on Vertisols of the semi-arid zone in India is becoming more common, so it is important that for developing P management strategies the residual value of P is allowed. Little information is available on this aspect for crops such as sorghum under rainfed cropping. A field experiment was conducted for three years to study the response of sorghum to fertilizer P (0, 10, 20, and 40 kg P ha-1) in the absence and presence of P residues from the preceding year on a Vertisol (Typic Pellustert), low in extractable P (0.4 mg kg-1 soil Olsen-P). Despite the variable rainfall received during the cropping season (June-September), P applied in the previous season had strong residual effects. Sorghum yield and P uptake in treatments in which P was applied at 20 or 40 kg P ha-1 once in two years was at par with or higher than in treatments in which 10 kg or 20 kg P ha-1 was added every year. Ninety percent relative grain yield was achieved at about 20 kg ha-1 of fresh P and the results presented show that application of 40 kg P ha-1 once in two years can satisfactorily meet the P requirement of sorghum on the Vertisol.
date: 2000
date_type: published
publication: Communications in Soil Science and Plant Analysis
volume: 31
number: 19/20
publisher: Taylor & Francis
pagerange: 3103-3112
refereed: TRUE
issn: 0010-3624
official_url: http://dx.doi.org/10.1080/00103620009370653
related_url_url: http://scholar.google.co.in/scholar?as_q=Residual+Phosphorus+and+Management+Strategy+for+Grain+Sorghum+on+a+Vertisol&num=10&btnG=Search+Scholar&as_epq=&as_oq=&as_eq=&as_occt=title&as_sauthors=&as_publication=&as_ylo=&as_yhi=&as_sdt=1.&as_sdtp=on&as_sdtf=&
related_url_type: author
citation:   Sahrawat, K L  (2000) Residual phosphorus and management strategy for grain sorghum on a vertisol.  Communications in Soil Science and Plant Analysis, 31 (19/20).  pp. 3103-3112.  ISSN 0010-3624     
document_url: http://oar.icrisat.org/1854/1/ComSoiSciPlAna31_19-20_3103-3112_2000.pdf