Relationship of Yields and Pratylenchus spp. Population Densities in Dryland and Irrigated Corn

Relationship of Yields and Pratylenchus spp. Population Densities in Dryland and Irrigated Corn

Analyses of covariance were used to relate corn yields to population densities of Pratylenchus hexincisus in South Dakota dryland corn or P. scribneri in irrigated corn. The relationship for P. hexincisus was Y = 5,825 - 0.14X - 0.03X' where Y = yield (kg/ha), X = number of P. hexincisus per gr...

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Veröffentlicht in:Journal of nematology. - 1969. - 19(1987), Annals 1 vom: 15. Okt., Seite 71-3
1. Verfasser: Smolik, J D (VerfasserIn)
Weitere Verfasser: Evenson, P D
Format: Aufsatz
Sprache:English
Veröffentlicht: 1987
Zugriff auf das übergeordnete Werk:Journal of nematology
Schlagworte:Journal Article Pratylenchus hexincisus Pratylenchus scribneri Zea mays crop loss lesion nematode
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520 |a Analyses of covariance were used to relate corn yields to population densities of Pratylenchus hexincisus in South Dakota dryland corn or P. scribneri in irrigated corn. The relationship for P. hexincisus was Y = 5,825 - 0.14X - 0.03X' where Y = yield (kg/ha), X = number of P. hexincisus per gram of dry root at midseason and X' = number at harvest. The relationship for P. scribneri was best described by Y = 7,400 - 0.06X' for nematode populations measured at harvest. Yield loss estimates indicated P. hexincisus was more damaging to dryland corn than was P. scribneri to irrigated corn 
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