Browsing by Author "Chauhan, Rohit"
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Publication A study on the bruchid, Callosobruchus chinensis (Linnaeus) : life cycle on Mung bean(Malhotra Publishing House, 2023) Chauhan, Rohit; Meena, R.S.; Singh, P.S.; Premkumari, SaswatiIn life cycle study the average durations of pre-oviposition (6.49 � 0.82 h), oviposition (6.53 � 0.73 days), and post-oviposition (2.65 � 0.41 days) were determined. The incubation period was 3.64 � 0.78 days. Total grub period and pupal period were 14.43 � 2.97 days and 5.25 � 0.93 days, respectively. The average lifespan of male adult and female adult were 6.11 � 0.64 days and 9.26 � 0.69 days, respectively. The fecundity was 87.58 � 8.03 eggs which ranged between 76 � 110 eggs/female. Total life cycle was completed in 26 � 39 days with an average duration of 29.43 � 1.84 days in case of male while 28 � 41 days with an average duration of 32.58 � 1.89 days in female. � (2023), (Malhotra Publishing House). All Rights Reserved.Publication Biology and morphometric description of pulse beetle, Callosobruchus maculatus (Fabricius) on chickpea(Malhotra Publishing House, 2023) Premkumari, Saswati; Meena, R.S.; Chauhan, Rohit; Keval, Ram; Srivastava, C.P.The present investigation focused on the biology, reproductive parameters and morphometric characterization of pulse beetle, Callosobruchus maculatus (Fabricius) reared on chickpea, Cicer arietinum under laboratory condition. Results showed that eggs were spindle-shaped, laid singly and staunchly adhered to the seed coat. The larva was C-shaped and lived inside the seed. The adult came out by making a window hole on the seed. It took 3 to 5 days for hatching of eggs. The total larval duration was 14-20 days and pupal period varied between 6-7 days. All life stages were measured morphometrically. The mean length and width of the egg were 0.62 � 0.03 mm and 0.41 � 0.03 mm, respectively. Average length and width for first instar larva were 0.67 � 0.03 mm and 0.37 � 0.02 mm, for second instar larva, it was 1.86 � 0.06 mm and 1.18 � 0.03 mm, for third instar larva, 2.70 � 0.06 mm, and 1.47 � 0.03 mm and for fourth instar larvae it was 3.61 � 0.03 mm and, 1.97 � 0.04 mm respectively. The average of total body length of male and female adult was 3.88 � 0.09 mm and, 4.02 � 0.12 mm respectively. The total life cycle of an adult male and female was 36.49 and 40.07 days, respectively, with an average fecundity of 91.30 � 7.74 eggs per female. � (2023). All Rights Reserved.Publication Effect of newer insecticide molecules against fruit borer, Helicoverpa armigera (Hubner) in tomato(Malhotra Publishing House, 2023) Pramanik, Kaushik; Meena, R.S.; Chauhan, RohitThe most effective insecticide against tomato fruit borer was indoxacarb 14.5% SC at 300 g a.i./ha. It reduced the number of larvae by 69.63 and 84.78% in the first and second sprayings, respectively. The next most effective insecticides were spinosad (73 g a.i./ha) and chlorantraniliprole (30 g a.i./ha). The plot treated with indoxacarb yielded 71.79% more than the control plot, followed by chlorantraniliprole (69.44%) and spinosad (63.53%). � 2023 MPH J. ent. Res.,Publication Screening of mung bean germplasm against pod borer complex(The Entomological Society of India, 2021) Chauhan, Rohit; Singh, A.K.; Premkumari, SaswatiThe susceptibility of 50 mung bean germplasm accessions was evaluated against pod borer complex. The least incidence of larvae was observed in the accession NDMK 15-513 (1.12 larvae/ 5 plants) in comparison to the checks SML 1811 and ML 623 (2.20 and 7.20 larvae/ 5 plants, respectively). The pod damage was the least with accession IPM 14-7 (1.33%) in contrast to the checks SML 1811 (3.33%) and ML 623 (8.80%). As per the pest susceptibility rating, three accessions viz., ML 2410, IPM 14-7 and NDMK 15-513 can be categorized as the least susceptible. � 2021, The Entomological Society of India. All rights reserved.
