Productivity and rotational benefits of grass medic pastures and faba beans in a rainfall limited environment

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dc.contributor.author Yunusa, Isa en_US
dc.contributor.author Rashid, M en_US
dc.date.accessioned 2009-12-21T02:29:31Z
dc.date.available 2009-12-21T02:29:31Z
dc.date.issued 2007 en_US
dc.identifier 2007001317 en_US
dc.identifier.citation Yunusa Isa and Rashid M 2007, 'Productivity and rotational benefits of grass medic pastures and faba beans in a rainfall limited environment', Elsevier Inc, vol. 97, pp. 150-161. en_US
dc.identifier.issn 0167-1987 en_US
dc.identifier.other C1 en_US
dc.identifier.uri http://hdl.handle.net/10453/3646
dc.description.abstract This study was undertaken to ascertain whether pulses, instead of pasture legumes, were more beneficial to grain yields by the following cereals in ley rotation systems. We evaluated growth processes for pastures or pulses and growth and yields for the following sequential crops of wheat and barley in a 3-crop rotation. The pasture or pulse phase that formed the main treatments consisted of grass pastures (Grass), medics (Medic) or faba beans that was either green manured (Faba-gm) or harvested for grain (Faba-gr). The rotations were initiated in two phases with Phase I starting in 1994 and Phase 2 in 1995, and each phase ran over 2 rotation cycles lasting 6 years. Despite differences in dry matter (DM) produced in the shoots and roots by the pastures and faba beans in the first years, they had similar seasonal evapotranspiration (ET) so water stored in the 100 cm profile of the soil was always similar when wheat was planted. By contrast, inorganic N in soil at wheat planting was always higher in legume rotations than in Grass and these differences persisted to the barley crop. Cereals in rotations with faba beans (Faba-gr and Faba-gm) produced more DM and grains than in Grass. In only 2 out of 8 croppings of cereals did wheat or barley in Medic out-yield those in Grass. These yield differences were not associated with uptake of soil N or use of soil-water by the cereals, but possibly due to lower levels of Pratylenchus neglectus in the soil under rotations with faba beans compared with pasture. Increased N supply after legumes or from fertilizer, however, increased grain protein in the cereals. This study showed that rotations with faba beans produced higher yields for the following cereals than with grassy or legume pastures, also green manuring of faba beans produced no advantage in yield for the cereals. en_US
dc.publisher Elsevier Inc en_US
dc.relation.isbasedon http://dx.doi.org/10.1016/j.still.2007.09.013 en_US
dc.title Productivity and rotational benefits of grass medic pastures and faba beans in a rainfall limited environment en_US
dc.parent Soil & Tillage Research en_US
dc.journal.volume 97 en_US
dc.journal.number 2 en_US
dc.publocation Amsterdam, Netherlands en_US
dc.identifier.startpage 150 en_US
dc.identifier.endpage 161 en_US
dc.cauo.name SCI.Environmental Sciences en_US
dc.conference Verified OK en_US
dc.for 070100 en_US
dc.personcode 030005 en_US
dc.personcode 0000036689 en_US
dc.percentage 100 en_US
dc.classification.name Agriculture, Land and Farm Management en_US
dc.classification.type FOR-08 en_US
dc.description.keywords grain yield, nitrogen, Pratylenchus neglectus, root growth, rotations, soil-water, water use efficiency en_US


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