Suppression of Urea on Soybean Cyst Nematode(PDF)

《大豆科学》[ISSN:1000-9841/CN:23-1227/S]

Issue:

2012年05期

Page:

784-788

Research Field:

Publishing date:

Info

Title:

Suppression of Urea on Soybean Cyst Nematode

Author(s):

SONG Jie¹; 2; XU Yan-li¹; YAO Qin¹; 2; LI Shen-peng³; JI Dan-dan³

1.Key Laboratory of Mollisols Agroecology,Northeast Institute of Geography and Agroecology,Chinese Academy of Sciences,Harbin 150081,Heilongjiang;

2.College of Life Sciences,Northeast Forestry University,Harbin 150040,Heilongjiang;3.College of Agriculture,Heilongjiang University,Harbin 150080,Heilongjiang,China

Keywords:

Soybean Cyst Nematode; Urea; Egg hatch; J2

PACS:

S565.1

DOI:

10.3969/j.issn.1000-9841.2012.05.020

Abstract:

A study was conducted in lab and greenhouse to determine the effect of the urea on eggs,second-stage juveniles(J2)of Heterodera glycines and control efficiency of Soybean Cyst Nematode(SCN).The results showed that the urea inhibited the nematode egg hatch and the activity of J2 at the concentration of urea from 0.03 to 1.0 mol·L^-1,and with the increase of concentration,the suppressive effect rose accordingly.The suppressive rate of egg hatching and mortality of J2 reached 96% and 100% when urea concentration was at 1.0 mol·L^-1,respectively.In greenhouse,application of urea significantly reduced the population of SCN and the population of SCN in soil and soybean root.The application of urea also enhanced height,fresh and dry weight of shoots and roots of soybean,and the increase rate of fresh weight was 42.8%.The urea has lethal effect on SCN,and the population of SCN is suppressed by urea in a certain extent.

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