PASTIC Dspace Repository

GROWTH DYNAMICS AND LEAF CHARACTERISTICS IN OATS (AVENA SATIVA L.) DIFFER AT EXCESSIVE NITROGEN AND PHOSPHORUS APPLICATION

Show simple item record

dc.contributor.author AMANULLAH
dc.contributor.author HIDAYATULLAH
dc.contributor.author AMANULLAH JAN
dc.contributor.author B.A. STEWART
dc.date.accessioned 2023-01-04T09:13:23Z
dc.date.available 2023-01-04T09:13:23Z
dc.date.issued 2013-06-22
dc.identifier.citation Amanullah, J., & Stewart, B. A. (2013). Growth dynamics and leaf characteristics in oats (Avena sativa L.) differ at excessive nitrogen and phosphorus application. Pakistan Journal of Botany, 45(3), 853-863. en_US
dc.identifier.issn 2070-3368
dc.identifier.uri http://142.54.178.187:9060/xmlui/handle/123456789/15496
dc.description.abstract Shoot-root ratio (by length), number of roots plant-1 (NRPP), number of tillers plant-1 (NTPP), and leaf characteristics [number of leaves plant-1 (NLPP), leaf length (LL), mean single leaf area (MSLA), leaf area plant-1 (LAPP), leaf elongation rate (LER), leaf area index (LAI), specific leaf area (SLA), specific leaf weight (SLW), and leaf area ratio (LAR)] response of oats (Avena sativa L., cv. Walker) was investigated under excessive nitrogen (N) as 200 mg N kg-1 (N1P0), excessive phosphorus (P) as 200 mg P kg-1 (N0P1), and combine 100 mg N + 100 mg P kg-1 of potting mix (N2P2) and control (N0P0) as check in pot experiment at Dryland Agriculture Institute, West Texas A&M University, Canyon, Texas, USA during winter 2009-10. The experiment was performed in completely randomized design (CRD) with three replicates. Shoot-root ratio increased with excessive N, excessive P and combined N + P applications due to the decline in root lengths. The lower shoot-root ratio in control was mainly attributed to the longer roots produced by oats. Phosphorus alone or combined application with N (N2P2) increased NRPP over control. At the early stages, control had more NRPP than N alone. With advancement in crop growth, combined N + P applications had more favorable effects on NTPP than other treatments. Excessive P had more but excessive N had less NTPP than control. Except SLW, all other parameters viz. NLPP, LL, LER, MSLA, LAPP, LAI, SLA, and LAR decreased due the toxic effects of excessive N. Excessive P alone or combined N + P applications had beneficial effects on various leaf characteristics of oats viz. NLPP, LL, LER, MSLA, LAPP, LAI, SLA, and LAR. en_US
dc.language.iso en en_US
dc.publisher Karachi: Pakistan Botanical Society en_US
dc.title GROWTH DYNAMICS AND LEAF CHARACTERISTICS IN OATS (AVENA SATIVA L.) DIFFER AT EXCESSIVE NITROGEN AND PHOSPHORUS APPLICATION en_US
dc.type Article en_US


Files in this item

This item appears in the following Collection(s)

Show simple item record

Search DSpace


Advanced Search

Browse

My Account