?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc&rft.title=Modelling+dry+matter+production+and+resource+use+in+intercrops+of+pea+and+barley&rft.creator=Berntsen%2C+J.&rft.creator=Hauggaard-Nielsen%2C+H.&rft.creator=Olesen%2C+J.E.&rft.creator=Petersen%2C+B.M.&rft.creator=Jensen%2C+E.S.&rft.creator=Thomsen%2C+A.&rft.subject=+Crop+combinations+and+interactions&rft.description=The+FASSET+whole+farm+model+was+extended+with+a+sub-model+for+competition+between+several+plant+species+for+light%2C+water+and+nitrogen.+The+new+model+was+tested+on+intercrops+of+pea+(Pisum+sativum+L.)+and+spring+barley+(Hordeum+vulgare+L.).+A+three-year+dataset+on+pea+and+barley+sole+crop+growth+was+used+for+calibration.+Two+datasets+that+included+detailed+measurements+of+crop+production%2C+nitrogen+uptake+and+leaf+area+indices+from+two+sites+were+used+for+testing.+An+arable+organic+experiment+from+three+sites+including+several+treatments+over+four+years+was+also+used+for+testing.+%0D%0AThe+model+predicted+the+increase+in+resource+utilisation+of+pea+and+barley+and+effects+on+pea+symbiotic+nitrogen+fixation+satisfactorily.+The+effects+of+pea+interspecific+competition+on+barley+production+agreed+with+observations%2C+but+the+simulated+effect+of+barley+interspecific+competition+on+pea+was+underestimated.+Sensitivity+analyses+showed+that+the+vertical+distribution+of+barley+leaf+area+had+a+great+influence+on+the+outcome+of+the+interspecific+competition+between+the+barley+and+pea+crops.+%0D%0A&rft.publisher=Elsevier&rft.date=2004&rft.type=Journal+paper&rft.type=NonPeerReviewed&rft.format=application%2Fpdf&rft.identifier=http%3A%2F%2Forgprints.org%2F4052%2F1%2F4052.pdf&rft.identifier=Berntsen%2C+J.%3B+Hauggaard-Nielsen%2C+H.%3B+Olesen%2C+J.E.%3B+Petersen%2C+B.M.%3B+Jensen%2C+E.S.+and+Thomsen%2C+A.+(2004)+Modelling+dry+matter+production+and+resource+use+in+intercrops+of+pea+and+barley.+Field+Crops+Research%2C+88+(1)%2C+pp.+69-83.+[+In+Press+%2C+2004]+**&rft.relation=http%3A%2F%2Forgprints.org%2F4052%2F