Yellowing symptoms sometimes cause yield losses in green soybean cultivation. The objective of this study was to estimate the yield loss factors in a glasshouse. The parameters evaluated were plant-parasitic nematodes (Heterodera glycines, Pratylenchus penetrans, Meloidogyne spp.) and soil chemical properties. While the density of H. glycines did not show a negative correlation with yield in the February planting date, it showed a strongly negative correlation in the March planting date. Multiple regression analysis showed that yield was significantly correlated with P. penetrans and nitrate in the February planting, and with H. glycines and K in the March planting. The present study revealed that yield loss was caused by P. penetrans and nitrate in seasons with unsuitable temperatures for H. glycines hatch, and by H. glycines and alleviated by K in seasons with optimum temperatures for H. glycines hatching.
Soybean cyst nematode population development and associated soybean yields of resistant and susceptible cultivars in Minnesota.
Relationship between population density of soybean cyst nematode and yields of susceptible soybean cultivar “Kitamusume”.
Annual Report of the Society of Plant Protection of North Japan61150-153.
Quantitative detection of the potato cyst nematode, Globodera pallida, and the beet cyst nematode, Heterodera schachtii, using real-time PCR with SYBR green I dye.
Molecular and Cellular Probes1981-86.
Development of a direct quantitative detection method for Meloidogyne incognita in sandy soils and its application to sweet potato cultivated fields in Tokushima prefecture, Japan.
Prediction of nematode-damage of green soybean variation in population density of Heterodera glycines I. Under crop rotation.
Crop Science Society of Japan347-9.
Planting date and soybean cultivar maturity group affect population dynamics of Heterodera glycines, and all affect yield of soybean.
Journal of Nematology32334-342.
Quantification of Pratylenchus penetrans in radish fields using a combination method of soil compaction and real-time PCR to determine the economic threshold.
Soil Science and Plant Nutrition57213-220.
Development of a direct quantitative detection method for Meloidogyne incognita and M. hapla in andosol and analysis of relationship between the initial population of Meloidogyne spp. and yield of eggplant.