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首页> 外文期刊>Journal of Maize Research and Development >Management of stem borer (Chilo partellus Swinhoe) in maize using conventional pesticides in Chitwan, Nepal
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Management of stem borer (Chilo partellus Swinhoe) in maize using conventional pesticides in Chitwan, Nepal

机译：尼泊尔奇旺使用常规农药处理玉米stem虫（Chilo partellus Swinhoe）

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摘要

The stem borer (Chilo partellus Swinhoe) is one of the most destructive pests of maize crop. Research experimentations were carried out on maize to control stem borer using conventional pesticides under field condition during summer season of two consecutive years from 2015 to 2016 at Rampur, Chitwan. All used pesticides had significant effect (P≤0.05) on percent damage and crop yield over control. In 2015, the lower percent damage (5.3%) with higher crop yield (4.52 t ha-1) and lowest insect score (1.00) was observed in plot sprayed with spinosad 45% EC at 0.5 ml L-1 of water followed by plot treated with chloropyriphos 50% EC+cypermethrin 5%EC @1.5ml L-1 of water with percent damage of 6.60%, crop yield (4.23 t ha-1) and insect score of 1.60. Almost similar trend of insect incidence along with damage percentage and yield data were observed in 2016. The higher percent damage control (79.06%) was observed at the plot sprayed after spinosad 45% EC at 0.5 ml L-1 of water with higher crop yield (4.58 t ha-1) and lowest insect score (1.00) followed by the plot treated with imidacloprid 17.8% @ 0.5 ml L-1 of water with percent damage control of 73.10 %, crop yield (3.38 t/ha) and insect sore 1.50. The highest percent damage (20.63%) was observed in the control plot with lower yield (0.95 t ha-1) and highest insect score (6.00). Over the years, spinosad 45% EC at 0.5 ml L-1 of water was effective bio-pesticide to control maize stem borer damage and also increase the yield.
机译：bore虫（Chilo partellus Swinhoe）是玉米作物中最具破坏性的害虫之一。 2015年至2016年连续两年的夏季，在Chitwan的Rampur对玉米使用常规农药在田间条件下进行了防治玉米bore的研究。所有使用过的农药对伤害百分率和农作物产量的控制均具有显着影响（P≤0.05）。 2015年，在以0.5 ml L-1的水喷洒多杀菌素45％EC的地块中观察到较低的损害百分率（5.3％），较高的农作物产量（4.52 t ha-1）和最低的昆虫评分（1.00）。在1.5ml L-1的水中用50％氯吡磷，50％EC +氯氰菊酯，5％EC处理，损伤百分率为6.60％，农作物产量（4.23 t ha-1），昆虫评分为1.60。 2016年观察到几乎与虫害发生趋势类似的趋势，以及损害百分率和产量数据。在多杀菌素45％EC下，在0.5 ml L-1的水中喷洒多孢子虫喷洒的地块，农作物产量更高，损害控制的百分比更高（79.06％） （4.58 t ha-1）和最低虫害分数（1.00），然后是吡虫啉17.8％@ 0.5 ml L-1水处理的地块，防治百分比为73.10％，农作物产量（3.38 t / ha）和昆虫疮1.50。在对照地块中观察到最高的伤害百分率（20.63％），产量较低（0.95 t ha-1），昆虫评分最高（6.00）。多年来，在0.5 ml L-1的水下多杀菌素45％EC是有效的生物农药，可控制玉米stem虫的危害并提高产量。

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