eprintid: 7529
rev_number: 10
eprint_status: archive
userid: 329
dir: disk0/00/00/75/29
datestamp: 2014-02-19 06:39:47
lastmod: 2014-02-19 06:39:47
status_changed: 2014-02-19 06:39:47
type: article
metadata_visibility: show
contact_email: Library-ICRISAT@CGIAR.ORG
creators_name: Abdurahman, M D
creators_name: Seeling, B
creators_name: Rego, T J
creators_name: Reddy, B B
icrisatcreators_name: Abdurahman, M D
icrisatcreators_name: Seeling, B
icrisatcreators_name: Rego, T J
icrisatcreators_name: Reddy, B B
affiliation: ICRISAT(Patancheru)
country: India
title: Nitrogen returns to soil by selected cropping systems on a Vertisol in the semi-arid tropics of India
ispublished: pub
subjects: s2.11
subjects: s2.4
full_text_status: restricted
keywords: Cropping systems, Nitrogen returns, Semi-arid tropics, Soil, Vertisol
abstract: Limited nitrogen (N) availability is a common constraint for crop production on Vertisols. Erratic rainfall in the semi-arid tropics and relatively high cost of N fertilizers make its application a risky investment, therefore, most farmers do not apply N fertilizer in dryland crops. Cropping systems which improve soil fertility can minimize the need for synthetic fertilizers. In a two-year experiment, four cropping systems and mirror images of two systems were examined for their returns of N to soil in roots and fallen leaves. Sorghum/pigeonpea intercrop for two years (S/PP S/PP) and cowpea/pigeonpea intercrop rotated with sorghum followed by safflower (COW/PP S+SAF) contributed around 54 kg N ha-1 in roots and fallen leaves when no nitrogen fetilizer was applied. The largest proportion of this N was returned to soil through fallen leaves of pigeonpea. In terms of root mass a rotation of sorghum followed by safflower in the post-rainy season (S+SAF S+SAF) deposited almost the same amount of N in roots if adequately fertilized. Under S/PP S/PP the soil mineral N content was measurable higher compared to other systems.
date: 1999
date_type: published
publication: Crop Research (Hisar)
volume: 17
number: 3
publisher: The Gaurav Society of Agricultural Research Information Centre (GSARIC)
pagerange: 273-281
refereed: TRUE
issn: 0970-4884
related_url_url: http://scholar.google.co.in/scholar?as_q=Nitrogen+returns+to+soil+by+selected+cropping+systems+on+a+Vertisol+in+the+semi-arid+tropics+of+India*&as_epq=&as_oq=&as_eq=&as_occt=title&as_sauthors=&as_publication=&as_ylo=&as_yhi=&btnG=&hl=en&as_sdt=0%2C5
related_url_type: pub
citation:   Abdurahman, M D and Seeling, B and Rego, T J and Reddy, B B  (1999) Nitrogen returns to soil by selected cropping systems on a Vertisol in the semi-arid tropics of India.  Crop Research (Hisar), 17 (3).  pp. 273-281.  ISSN 0970-4884     
document_url: http://oar.icrisat.org/7529/1/CR_17_3_273-281_1999.pdf