An exploratory evaluation of APSIM to simulate growth and yield processes for winter cereals in rotation systems in South Australia

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dc.contributor.author Yunusa, Isa en_US
dc.contributor.author Bellotti, W en_US
dc.contributor.author Moore, Andrew en_US
dc.contributor.author Probert, Merv en_US
dc.contributor.author Baldock, Jeff en_US
dc.contributor.author Miyan, S en_US
dc.date.accessioned 2009-12-21T02:30:37Z
dc.date.available 2009-12-21T02:30:37Z
dc.date.issued 2004 en_US
dc.identifier 2004000160 en_US
dc.identifier.citation Yunusa Isa et al. 2004, 'An exploratory evaluation of APSIM to simulate growth and yield processes for winter cereals in rotation systems in South Australia', C S I R O Publishing, vol. 44, pp. 787-800. en_US
dc.identifier.issn 0816-1089 en_US
dc.identifier.other C1 en_US
dc.identifier.uri http://hdl.handle.net/10453/3882
dc.description.abstract The Agricultural Preoduction Systems Simulator (APSIM) suite of models was used to predict dynamics in water and nitrogen in soil, as well as the growth and yield of sequential srops of wheat ands barley in pasture-wheat-barley rotations, between 1995 and 1997 at Rosewirthy, South Australia. The NWHEAT model satisfactorily predicted above ground dry matter, leaf area index and grain yields for both crops in rotations with wither grassy (Grass) or medi (Medic) pastues, including the lack of significant response of yiled to nitrogen fertiliser applied to whaet at sowing. Simulation data for soil water, from SOILWAT2, was consistent with measured data. Simulation with SOILN2, however, largely underestimated soil nitrogen, due to excessive uptage by the simulated wheat during the season when nitrogen was abundant and water supply readily available. Thus, the soil nitrate had to be reset at sowing for the following barley crop; simulated soil nitrate agreed with the measured data in this season when this nutrient was low. For most variables fo crop growth and soil water, the simulated data was mostly within 2 standard errors of the measured means. Prediction of grain protein was underestimated in all cases,including where nitrogen in the shoot was overestimated. This was possibily due to inadequate remobilisation of nitrogen fromt he staw and roots to the grain by the simulated crop. This study demostrated the capability fo APSIM to predict growth and grain yield of wheat and barley, as well as the associated dynamics of soild water int he main cereal belts of South Australia. en_US
dc.publisher C S I R O Publishing en_US
dc.relation.isbasedon http://dx.doi.org/10.1071/EA03121 en_US
dc.title An exploratory evaluation of APSIM to simulate growth and yield processes for winter cereals in rotation systems in South Australia en_US
dc.parent Australian Journal Of Experimental Agriculture en_US
dc.journal.volume 44 en_US
dc.journal.number en_US
dc.publocation Collingwood en_US
dc.identifier.startpage 787 en_US
dc.identifier.endpage 800 en_US
dc.cauo.name DVCRch.Institute for Water & Environmental Resource Mgmnt en_US
dc.conference Verified OK en_US
dc.for 070300 en_US
dc.personcode 030005 en_US
dc.personcode 0000022054 en_US
dc.personcode 0000022055 en_US
dc.personcode 0000022056 en_US
dc.personcode 0000022057 en_US
dc.personcode 0000022058 en_US
dc.percentage 100 en_US
dc.classification.name Crop and Pasture Production en_US
dc.classification.type FOR-08 en_US
dc.description.keywords barley grass, medics, soil nitrogen, soil water en_US


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