Effects of botanicals on egg laying and adult emergence of pulse beetle in stored green gram
Lalsingh Rathod, SB Kumre, JS Ingole and KD Marwade
An experiment was conducted to test the efficacy of botanicals against pulse beetle in stored green gram at the laboratory of AICRP on PHET and Seed Technology Research Unit (STRU), Dr. Panjabrao Deshmukh Krishi Vidyapeeth, Akola (MS) during the month of June to January in the year 2016-17. Eight treatments including untreated control, comprising of clove powder (3g/kg grain), tulasi leaf powder (3g/kg), black pepper powder (3g/kg), Acorus calamus rhizome powder (10g/kg), sesame oil (5ml/kg), soybean oil (5ml/kg), castor oil (5ml/kg) were used against adult pulse beetle, Callosobruchus chinensis on green gram seed. All botanicals recorded lower rate of oviposition and adult emergence than the untreated control. Significantly minimum number of egg laying found in treatments Acorus calamus rhizome powder (19.00 eggs/ 100 g seed) and black pepper powder (27.00 eggs/100g seed). Similarly as in case of egg laying, same effect was shown by Acorus calamus rhizome powder and black pepper powder in minimal adult emergence. Minimum number of adult emergence was recorded in Acorus calamus rhizome powder (4.00 adults/100 g seed) and in black pepper powder (7.00 adults/100 g seed). The order of remaining treatments to record minimum number of egg laying and adult emergence were clove powder, castor oil, sesame oil, soybean oil, and tulasi leaf powder in first month and similar order of effectiveness of botanicals found even after six months.