dc.contributor.author | Gunga, MO | |
dc.contributor.author | Mburu, MWK | |
dc.contributor.author | Nyabundi, JO | |
dc.contributor.author | Jama, B | |
dc.date.accessioned | 2013-07-24T07:06:18Z | |
dc.date.available | 2013-07-24T07:06:18Z | |
dc.date.issued | 2000 | |
dc.identifier.citation | Influence of line-planted trees and phosphorus application on water use of maize in sub-humid western Kenya; Sustainable use of land resources to alleviate poverty in the new millennium, 18, Mombasa (Kenya), 4th-8th Dec 2000.- 9966-879-51-X.- p.279-297 | en |
dc.identifier.uri | http://agris.fao.org/agris-search/search/display.do?f=2008%2FKE%2FKE0702.xml%3BKE2007200092 | |
dc.identifier.uri | http://hdl.handle.net/11295/50432 | |
dc.description.abstract | Planting of trees in rows is common on farms in western Kenya where phosphorus deficiency is also a major constraint to maize production. The influences of soil P status and simultaneous agroforestry systems on water use have, however, not been reported for the regioo. Effects of line-planted Grevillea robusta (upperstorey trees), Calliandra calothyrsus and Senna spectabilis (both managed as hedges) and P application on water use efficiency were investigated in maize. The experiment was laid out as split-plot with tree species forming main plots while 250 kg P ha and no P applications formed subplots. Seasonal evapotranspiration, was greater under grevillea by 40.8 mm (5.2%) in long rains and by 49.3 mm (10.2%) in short rains. Application of P significantly increased seasonal evapotranspiration (ET) by 1.7% in long rains and 2.4% in short rains. Maize water use efficiency was higher with P (6.9 kg ha-l mm-1 in long rains and 9.5 kg ha.1 mm-I in short rains) than without P (0.8 kg ha-l mm-l in long rains and 2.1 kg ha-1 mm-I in shrrt rains). The results revealed enormous potential for increasing maize WUE in these soils by overcoming P-deficiency. Combining grevillea trees with P application enhanced use of seasonally available water. | en |
dc.language.iso | en | en |
dc.publisher | Soil Science Society of East Africa, Nairobi (Kenya) | en |
dc.title | Influence of line-planted trees and phosphorus application on water use of maize in sub-humid western Kenya | en |
dc.type | Article | en |
local.publisher | Faculty of Agriculture | en |