International Journal of Chemical Studies
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Online ISSN: 2321-4902, Print ISSN: 2349-8528   |   Impact Factor: GIF: 0.565 NAAS Rating: 5.31 NEW
International Journal of Chemical Studies
Vol. 7, Issue 2 (2019)

Efficacy of insecticides against major insect-pests of soybean in gird region at central India

Author(s): Tarun Kumar, SPS Tomar, NKS Bhadauria, Pradyumn Singh and NS Bhadauria
Abstract:
An Experiment comprising 08 treatment and including control was laid out variety RVS 2001-04 to manage girdle beetle and stem fly through seven new insecticides i.e. Thiamethoxam 25 WG @ 100 g/ha, Quinalphos 25 EC @ 1500 ml/ha, Imidacloprid 17.8 SL @ 500 ml/ha, Profenophos 50 EC @ 1000 ml/ha, Acetamiprid 20 SP @100 g/ha, Difenthiuon 50 WP @ 600 g/ha and Triazophos 40 EC @ 1000 ml/ha. The Infestation of girdle beetle was appeared on soybean crop at 30 days after germination. Before treatment plant infestation caused by girdle beetle was initially low ranged from 0.6 to 2.7 per cent. All mean indicated that Triazophos 40 EC @ 1000 ml/ha recorded minimum plant damage (2.89%) followed by, Profenophos 50 EC @ 1000 ml/ha, Difenthiuron 50 WP @ 600 g/ha and Thiamethoxam 25 WG @ 100 g/ha, recorded 2.9, 3.1, 3.7 and 4.3 per cent plant damage, respectively.
Quinalphos 25 EC @ 1500 ml/ha, Acetamiprid 20 SP @ 100 g/ha and Imidacloprid 17.8 SL @ 500 ml/ha also effective in reducing girdle beetle damage recorded only 5.0, 5.5 and 5.8 per cent plant damage. Whereas, control recorded maximum damage (11.6%). It is clear that the infestation of girdle beetle was found in increasing trend in all the treated plots as well as untreated control, because it was observed that girdle beetle remain active on soybean crop from 30 days after germination to till harvest of the crop and infest the crop during throughout the season. In comparison to control plant damage was less in all the treatment and yield was found to be significantly more in all the treated plots over control. It shows that treatment were effective to reduce the infestation of girdle beetle.
It is concluded that Thiamethoxam 25 WG @ 100 g/ha was the best treatment followed by Imidacloprid 17.8 SL @ 500 ml/ha, Acetamiprid 20 SP @ 100 g/ha, Quinalphos 25 EC @ 1500 ml/ha and Difenthiuon 50 WP @ 600 g/ha. Triazophos 40 EC @ 1000 ml/ha recorded the highest grain yield of 1441.66 kg/ha with 40.65% increase in yield over control. Other remaining treatments also recorded good range of yield i.e. 1333.10 to 1441.66 kg/ha with 30.08 to 40.65 per cent increase in yield over control. Treatment T7 i.e. Triazophos 40 EC @ 1000 ml/ha was economical and most remunerative recorded (1:9.80) ICBR. This was followed by Thiamethoxam 25 WG @ 100 g/ha (1:6.14), Acetamiprid 20 SP @ 100 g/ha (1:5.71) and Difenthiuon 50 WP @ 600 g/ha was also economical and recorded 1:4.81 ICBR.
Pages: 13-18  |  226 Views  38 Downloads
How to cite this article:
Tarun Kumar, SPS Tomar, NKS Bhadauria, Pradyumn Singh and NS Bhadauria. Efficacy of insecticides against major insect-pests of soybean in gird region at central India. International Journal of Chemical Studies. 2019; 7(2): 13-18.
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