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Titolo:
PREDICTION OF YIELD LOSS CAUSED BY OROBANCHE SPP IN CARROT AND PEA CROPS BASED ON THE SOIL SEEDBANK
Autore:
BERNHARD RH; JENSEN JE; ANDREASEN C;
Indirizzi:
ROYAL VET & AGR UNIV,DEPT AGR SCI,THORVALDSENSVEJ 40 DK-1871 FREDERIKSBERG C DENMARK
Titolo Testata:
Weed Research
fascicolo: 3, volume: 38, anno: 1998,
pagine: 191 - 197
SICI:
0043-1737(1998)38:3<191:POYLCB>2.0.ZU;2-A
Fonte:
ISI
Lingua:
ENG
Soggetto:
WEED DENSITY;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Science Citation Index Expanded
Citazioni:
22
Recensione:
Indirizzi per estratti:
Citazione:
R.H. Bernhard et al., "PREDICTION OF YIELD LOSS CAUSED BY OROBANCHE SPP IN CARROT AND PEA CROPS BASED ON THE SOIL SEEDBANK", Weed Research, 38(3), 1998, pp. 191-197

Abstract

Root parasites of the genus Orobanche cause serious losses in many subtropical crops. Direct control options are very limited and crop yield loss can reach 100%. Prediction of potential damage in a crop beforesowing or planting would support farmers in their choice of crop. This paper discusses the relationship between the number of Orobanche spp. seeds in the field and yield loss in peas (Pisum sativum L.) and carrots (Daucus carota L.) in Israel. Yield loss due to Orobanche crenataForsk. in peas was 100% at high infestations, whereas in carrots whenO. crenata and O. aegyptiaca were present it stabilized at about 50% for moderate infestations of 200 seeds per kg of soil. Statistical analyses related the yield loss from parasitism in peas and carrots to the numbers of Orobanche seeds remaining in the soil. A rectangular hyperbolic model, previously applied to competition data, fitted the data well. Confidence intervals for per cent yield loss were calculated using the bootstrap method. The practical applications of these models inpredicting yield loss are discussed.

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Documento generato il 10/07/20 alle ore 00:19:31