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Jadhav S.P.,Dr. B.S. Konkan Krishi Vidyapeeth | Mule R.S.,Agril Research Station
Pestology | Year: 2012

Results of the field experiment conducted to screen some promising genotypes of chickpea against pod borer, Helicoverpa armigera (Hubner) indicated that the mean per cent pod damage within the twenty genotypes tested varied between 8.48 to 33.06. The mean grain yield was ranged from 12.08 to 41.39 q/ha. The genotype Phule G-105-14-1 recorded lowest mean per cent pod damage of 8.48 and second highest yield of 40.74 q/ha. The genotype Phule-G-7104 exhibited mean per cent pod damage of 9.61 and registered highest yield of 41.39 q/ha. The genotype Phule G-06302 and local kabuli recorded maximum per cent pod damage of 30.04 and 33.04, respectively. The lowest yield of 12.08 q/ha was exhibited by genotype Virat followed by Rajas (14.68 q/ha) and Vishal (14.73 q/ha).


Pawar M.V.,Dr. B.S. Konkan Krishi Vidyapeeth | Mule R.S.,Agril Research Station
Pestology | Year: 2012

A laboratory experiment was conducted to study the effect of Corcyra eggs obtained from different rearing media on the development of Chrysoperla zastrowi arabica (Henry). The results revealed that the treatment differences regarding feeding potential are non-significant indicating equal preference by the predatory grub to various eggs. The larval period and larval weight of all the three instar grubs were in the range of 1.9 to 3.3 days and 1.65 to 8.17 mg, respectively in all the treatments. The maximum weight of pupa of Chrysoperla was observed in T 6 (7.39 mg) and minimum in T 4 (5.97 mg). Regarding the period of pupal stage, the treatment differences were non significant. Regarding per cent adult emergence, the statistical differences among all treatments were non significant. The maximum number of females were observed in T 1 (1:1.53) and minimum in T 4 (1:0.87). The maximum and minimum weights of both female and male were observed in T 3 (3.87 mg and 3.51 mg) and T 8 (3.68 and 3.38 mg). Longevity of female was in the range of 6.40 to 7.73 and male was 4.87 to 5.83 days, in different treatments.


Pawar M.V.,Dr. B.S. Konkan Krishi Vidyapeeth | Mule R.S.,Agril Research Station
Pestology | Year: 2012

Results of the laboratory experiment to study the bionomics of Corcyra cephalonica (Stainton) on different rearing media revealed that the incubation period was ranged from 2.3 to 4.0 days in different treatments. It was highest in T 1, T 2 and T 6 and lowest in T 4. The length, breadth and head width of all the six instar larvae was in the range of 0.96 to 14.26 mm, 0.15 to 1.41 mm and 0.17 to 0.69 mm, respectively in different treatments. The weight of fifth instar larvae was ranged from 22.80 to 40.20 mg, maximum in T 6 and minimum in T 2. The total larval developmental period was observed maximum in T 6 (26.7 days) and minimum in T 7 (17.7 days). The length, breadth, weight and developmental period of pupa was in the range of 11.41 to 12.80 mm, 1.16 to 1.57 mm, 24.13 to 37.20 mg and 8.9 to 12.2 days, respectively in different treatments. The maximum per cent adult emergence was observed in T 7 (52.00) and minimum in T 7 (31.67). The sex ratio was in the range of 1:0.81 to 1:1.57. Maximum and minimum survival periods of male was recorded in T 7 (11.13 days) and T 8 (9.13 days) while in female were recorded in T 7 (5.80 days) and T 4 (4.33 days), respectively. The fecundity was in the range of 259.53 to 401.53 eggs in different treatments.


Jadhav S.P.,Dr. B.S. Konkan Krishi Vidyapeeth | Patil R.S.,Dr. B.S. Konkan Krishi Vidyapeeth | Mehendale S.K.,Dr. B.S. Konkan Krishi Vidyapeeth | Mule R.S.,Agril Research Station
Pestology | Year: 2012

The Results of the field experiment conducted to test effect of some components of IPM against H. armigera infesting chickpea, Cicer arietinum revealed that the treatment T7 consisting of IPM components viz., hand collection and destruction of larvae a day before each spraying, alternate sprays of NSKE 5 per cent, Bt var. kurstaki and HaNPV 250 LE/ha at 15 days interval starting from 50 per cent initiation of flowering, growing 10 days old marigold seedlings all along the border as trap crop at the time of sowing of main crop, installation of pheromone of Helicoverpa armigera (1 trap/treatment) at the time of 50 per cent initiation of flowering and installation of bird perches (1 perch/treatment) was found more promising and economical than all other components of IPM on the basis of lowest cumulative mean larval population (1.57/10 plants), lowest mean per cent pod damage (8.49), maximum grain yield (28.09 q/ha), highest net income (Rs 54971/-/ha) and maximum ratio of incremental returns (1:3.84). The treatment T5 consisting of hand collection and destruction of larvae, application of Bt var, kurstaki @ 1gm/litre of water at 45 and 75 days after sowing and HaNPV @ 250 LE/ha at 60 days after sowing was ranked second best treatment in order of merit.


Munj A.Y.,Dr. B.S. Konkan Krishi Vidyapeeth | Munj A.Y.,Regional Fruit Research Station | Mule R.S.,Dr. B.S. Konkan Krishi Vidyapeeth | Mule R.S.,Agriculture Research Station | Narangalkar A.L.,Dr. B.S. Konkan Krishi Vidyapeeth
Pestology | Year: 2014

The Sapota Seed borer, Trimalitis margarias Meyrick is the new pest of sapota observed in Thane district of Maharashtra in the year 1999. Being an internal borer the pest was found difficult to control. In the present investigation efforts were made to control the pest by means of integrated pest managment at Agriculture Research Station, Palghar, Dist. Thane, Maharashtra state during 2001 to 2006 under the ICAR sponsored scheme "Study of sapota seed borer in Thane district'. The peak infestation of the pest was reported in the month of December (16.07%) followed by November (15.71%). Comparatively less infestation was reported in young sapota orchards as compared to old dense orchards. The maximum moth catch was observed during 41st and 42nd meteorological week i.e. in the month of October. Among the insecticides tested, Emamectin benzoate 5 SG was found most effective.

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