Responses of Soybean Cyst Nematode Heterodera glycines to Macroelement and Microelement Compounds

Y. ZHENG1, Y. DUAN1, S. CHEN2, J. SUN1 and L. CHEN1
1 Plant Nematology Lab, College of Plant Protection, Shenyang Agriculture University, Shenyang 110161, Liaoning Province, China
2 Southern Research and Outresearch Center, College of Food Agricultural and Natural Resource Sciences, University of Minnesota, Waseca 56093, Minnesota, USA


ZHENG, Y., Y.DUAN, S. CHEN, J. SUN and L. CHEN, 2010. Responses of soybean cyst nematode Hetero­dera glycines to macroelement and microelement compounds. Bulg. J. Agric. Sci., 16: 172-180

A variety of macroelement and microelement compounds were tested against the soybean cyst nematode (SCN), Heterodera glicines, in vitro and in vivo on soybean. In vitro, KH2PO4 was the best compound to reduce the number of surviving J2 and achieve the lowest value of LC50 (0.01M) and LC90 (0.03M) among the macroelement treatments. Almost all the tested compounds significantly inhibited the hatching of SCN, except for ZnSO4·7H2O. Among the microelement treatments, FeCl3·6H2O was the best one to inhibit J2 survival with the lowest value of LC50 (0.0004M) and LC90 (0.001M). All the tested compounds significantly inhibited the hatching of SCN and all inhibitions were over 90%. All treatments improved the growth of root and the application of (NH4)2HPO4 gave the best root growth (dry and fresh weighs). In glasshouse, all treatments were significantly effective in reducing the reproduction of SCN. FeCl3·6H2O was the best treatment for suppressing cyst production and achieving the highest percentage of nematode inhibition (72.54%).

Key words: compound, macroelement, microelement, soybean cyst nematode (SCN), inhibition

See the article as a PDF