Application of imidacloprid coating on the seeds of oilseed rape Ⅰ. Effects on the aphid development

doi:10.3969/j.issn.1004-1524.2017.03.12

›› 2017, Vol. 29 ›› Issue (3): 428-432.DOI: 10.3969/j.issn.1004-1524.2017.03.12

• Plant Protection • Previous Articles Next Articles

Application of imidacloprid coating on the seeds of oilseed rape Ⅰ. Effects on the aphid development

HUANG Fang^{1, *}, WU Hongping¹, LI Dongfu¹, HAO Zhongping^{2, *}

1. Comprehensive Technical Service Center of Huzhou Entry-exit Inspection and Quarantine Bureau, Huzhou 313000, China;
2.Crop Research Institute, Anhui Academy of Agricultural Sciences, Hefei 230031, China

Received:2016-11-25 Online:2017-03-20 Published:2017-03-31

Abstract

Abstract: Effects of imidacloprid (Gaucho) coating on aphids in fields of oilseed rape were studied. Seeds were treated by Gaucho in different ratios of 1∶5, 1∶25 and 1∶125 (weight of chemical versus seed). The results showed that 1) aphids occurred on the seedlings in the treatments were significantly less than the control, and so were in the flowering stages when no aphid was found in the highest treatment and a few aphids in the lowest treatment; 2) ratios of alate aphid between the treatments were significantly different. 6%~10% alate aphids appeared in the lowest treatment, while zero in the medium treatment, in the seedlings, over 20% in the flowers and 15% in the fruits; 3) aphids collected in fields of medium treatment could establish a quick-developing population on untreated plants, and counts of individuals were slightly higher than the control, but showing no statistical difference (P=0.6). The above results suggested that coating by imidacloprid could effectively control the aphids occurred on the oilseed rape, but a medium coating concentration could result in flourishing of alate aphids and increased reproductive ability.

Key words: seed-coating agent, imidacloprid, aphid, field population

CLC Number:

S435.65

HUANG Fang, WU Hongping, LI Dongfu, HAO Zhongping. Application of imidacloprid coating on the seeds of oilseed rape Ⅰ. Effects on the aphid development[J]. , 2017, 29(3): 428-432.

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Application of imidacloprid coating on the seeds of oilseed rape Ⅰ. Effects on the aphid development

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