2024, Vol. 4, Issue 1, Part A
Efficacy testing of ‘soft’ pesticides for the management of cabbage butterfly (Pieris brassicae nepalensis Doubleday) in Salyan, Nepal
Author(s): Biju Adhikari, Santosh Khadka, Chiranjivi Sharma, Santosh Kafle, Niharika Chaudhary and Saroj Sapkota
Abstract: Hit-or-miss use of chemical pesticides, and benightedness on the long-term impacts of hard pesticides on plants, soil, human health, and environments in conjunction with the resurgence of cabbage butterfly are the major impediments to the production of cabbage across the globe. This study, thus, was executed to disinter the effective soft pesticides which can keep the Pieris brassicae nepalensis well below the economic injury level, minimize their resurgence or even eradicate them so as to surge the production and productivity of cabbage in Salyan district, Nepal from April to July 2022. The experiment was set down in one factorial randomized complete block design with soft pesticides: Neemix @5 ml/l, Cow urine solution @ 1:10, Botanical extract fermented with cow urine (BEFCU)@1:5, Emamectin benzoate @2 gm/l, Spinosad @0.3 ml/l, Cypermethrin@2 ml/l, and Control, were used as treatments and each treatment were replicated thrice. Mean larval population, percentage of infested leaves, average hole per infested leaves, head diameter, height, and yield of cabbage were the parameters that were documented during the entire experimental period. Spraying of soft pesticides unraveled significant sway in larval mortality as well as diminution in the damage. Zenithal reduction in the cabbage butterfly population was recorded on the application of Spinosad (80%) followed by Cypermethrin (71.29%), Emamectin benzoate (71.25%), and Neemix (67.22%). Similarly, the nadir percentage of damage on leaves was documented on the application of Spinosad and Cypermethrin followed by Emamection benzoate. Maximum head diameter (16.10 cm) and yield (23.44 Mt/ha) were obtained when cabbage was sprayed with Spinosad followed by Cypermethrin whereas minimum head diameter (13.37 cm) and yield (13.76 Mt/ha) was recorded with the control. Spinosad and Cypermethrin, thus, are superior soft pesticides for the management of cabbage butterfly relative to other treatments in Salyan district. Farmers, therefore, are suggested to exploit Spinosad and Cypermethrin for the control and management of cabbage butterfly in an attempt to boost the production and productivity of cabbage.
Pages: 34-43 | Views: 112 | Downloads: 45
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How to cite this article:
Biju Adhikari, Santosh Khadka, Chiranjivi Sharma, Santosh Kafle, Niharika Chaudhary, Saroj Sapkota. Efficacy testing of ‘soft’ pesticides for the management of cabbage butterfly (Pieris brassicae nepalensis Doubleday) in Salyan, Nepal. Zool Entomol Lett 2024;4(1):34-43.
