Soybean Cyst Nematode Reduces Soybean Yield Without Causing Obvious Aboveground Symptoms

Soybean Cyst Nematode Reduces Soybean Yield Without Causing Obvious Aboveground Symptoms

Field experiments were conducted at locations in northern and southern Illinois, central Iowa, and central Missouri from 1997 to 1999 to investigate the effects of Heterodera glycines on soybean growth, development, and yield. A wide range of infestation levels was present at all locations. Two loca...

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Veröffentlicht in:Plant disease. - 1997. - 87(2003), 6 vom: 20. Juni, Seite 623-628
1. Verfasser: Wang, J (VerfasserIn)
Weitere Verfasser: Niblack, T L, Tremain, J A, Wiebold, W J, Tylka, G L, Marett, C C, Noel, G R, Myers, O, Schmidt, M E
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2003
Zugriff auf das übergeordnete Werk:Plant disease
Schlagworte:Journal Article
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520 |a Field experiments were conducted at locations in northern and southern Illinois, central Iowa, and central Missouri from 1997 to 1999 to investigate the effects of Heterodera glycines on soybean growth, development, and yield. A wide range of infestation levels was present at all locations. Two locally adapted cultivars, one resistant to H. glycines, were grown at each location. Cultivars were planted in alternating four-row strips with 76 cm between rows. For each cultivar, 20 1-m-long single-row plots were sampled every 2 weeks starting 4 weeks after planting. Infection by H. glycines reduced plant height and leaf and stem weight on the resistant cultivars in the first 12 weeks after planting, and delayed pod and seed development 12 to 14 weeks after planting. Biomass accumulation was not reduced on the susceptible cultivars until 10 weeks after planting; reduction in pod and seed development occurred throughout the reproductive stages. Susceptible cultivars produced significantly lower yields than resistant cultivars, but the yield reductions were not accompanied by visually detectable symptoms 
650 4 |a Journal Article 
700 1 |a Niblack, T L  |e verfasserin  |4 aut 
700 1 |a Tremain, J A  |e verfasserin  |4 aut 
700 1 |a Wiebold, W J  |e verfasserin  |4 aut 
700 1 |a Tylka, G L  |e verfasserin  |4 aut 
700 1 |a Marett, C C  |e verfasserin  |4 aut 
700 1 |a Noel, G R  |e verfasserin  |4 aut 
700 1 |a Myers, O  |e verfasserin  |4 aut 
700 1 |a Schmidt, M E  |e verfasserin  |4 aut 
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