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ThesisItem Open Access Population Dynamics and Management of Hadda Beetle, Henosepilachna vigintioctopunctata (Fab.) on Indian Ginseng, Withania somnifera (L.) Dunal(2022) Kumari ,Neelam; Kumawat, K.C.The investigation entitled „Population dynamics and management of hadda beetle, Henosepilachna vigintioctopunctata (Fab.) on Indian ginseng, Withania somnifera (L.) Dunal‟ was conducted at Entomology Department, S.K.N. College of Agriculture, Jobner (Rajasthan) during Kharif, 2021. The study on the population dynamics revealed that the infestation of hadda beetle, Henosepilachna vigintioctopunctata (Fab.) (grub and adult) started in the first week of September and reached at peak in second week of October. Hadda beetle population (grub and adult) had significant positive correlation with maximum temperature (r=0.64), while the minimum temperature, relative humidity and rainfall showed non-significant correlation with it. The population of hadda beetle, H. Vigintioctopunctata (egg batch) had significant positive correlation with maximum temperature (r= 0.65) and non-significant correlation with minimum temperature, relative humidity and rainfall. The natural enemies of insect pests recorded in the Indian ginseng were chrysopid, Chrysoperla zastrowi arabica (Henry et al.), Camponotus compressus (Fab.), Monomorium indicum Forel and spider. Their populations were found in traces only. Therefore the population could not be recorded. The duration of egg, grub, pupa and adult stages were found to be 7.7, 14.5, 5.9 and 57.5, days respectively. Both grubs and adults were found destructive in nature. The average body length of 1st, 2nd, 3rd and 4th instar grub was 2.05 ± 0.34 mm, 3.03 ± 0.24 mm, 4.18± 0.10 mm, 6.21± 0.27 mm and 3.11± 0.29 mm, respectively. The average body breadth of 1st, 2nd, 3rd and 4th instar grub was 1.11±0.17 mm, 1.42± 0.06 mm, 1.89± 0.25 mm and 3.11± 0.29 mm, respectively. The average pre pupal length was 5.01± 0.46 mm and breadth was 2.71± 0.33 mm. The average pupal length was 5.98± 0.05 mm and breadth was 3.64± 0.24 mm. The average body length of male was 6.21± 0.17 mm and breadth was 4.62± 0.28mm, whereas in female the length was 7.15± 0.28 mm and breadth was 5.19± 0.27mm. Out of eight biopesticides and botanicals tested against hadda beetle on Indian ginseng crop, revealed that azadirachtin (0.03 EC) 5 ml/ l proved to be most effective followed by Neem oil and Neem seed kernel extract (5%) and B.bassiana (1.15 WP). The treatment ofL. lecanii (1.15 WP) and M. anisopliae (1.15 WP) were ranked in middle order of efficacy, while the plant products, viz., Karanj seed extract (5.0 %) and Karanj oil proved to be the least effective.ThesisItem Open Access Eco-friendly Management of Major Insect Pests of Cabbage, Brassica oleracea var. capitata Linn.(2022) Choudhary, Neetu; Meena, Ram KishorThe investigation on ‘Eco-friendly Management of Major Insect Pests of Cabbage, Brassica oleracea var. capitata Linn’ under semi-arid condition was conducted at Horticulture Farm, S.K.N. College of Agriculture, Jobner (Rajasthan) during Rabi, 2021-22.The initiation of aphid population recorded in the third week of December which reached peak in third week of February (8th SMW) (160.4 aphid/plant), while, the initiation of diamondback moth population recorded in the third week of December (51nd SMW) which reached its peak in fourth week of February, i.e. 9 th SMW (4.5 DBM larvae/10 plants) when maximum temperature, minimum temperature and relative humidity was 31.0 and 8.1°C, 50 per cent and sun shine (9.5 hrs), respectively and gradually declined thereafter. Flea beetle, the initiation of flea beetle population recorded in the first week of January (1st SMW) which reached its peak in fourth week of February, (10.1 flea beetle/10 plants) and gradually declined thereafter. Painted bug, the initiation of painted bug population recorded in the fourth week of November (48th SMW) which reached its peak in fourth week of February, (5.2 painted bug/10 plants) and gradually declined thereafter. The natural enemy of Coccinella septempunctata, the initiation of C. septempunctata population recorded in the second week of December (50 th SMW) which reached its peak in fourth week of February, (3.9 /10 plants). The relationship between aphid L. erysimi, with maximum temperature, minimum temperature, and relative humidity had showed negative correlation (r = -0.193, r = -0.149 and r = -0.139), diamondback moth, Plutella xylostella (L.) and painted bug Bagradacruciferarum (Kirk.) had showed that positive correlation (r = 0.446, r = 0.308, r = 0.709 and r = 0.783, r = 0.419, r = 0.798) with maximum temperature, minimum temperature and sun shine, respectively, while, had showed negative significant correlation (r = -0.588 and r = -0.798, respectively) with relative humidity; flea beetle, Phyllotreta cruciferae (Goeze.) population with maximum temperature and sun shine had showed positive correlation (r = 0.188 and r = 0.580), while relative humidity had showed negative correlation (r = -0.344). While, maximum temperature, minimum temperature and sun shine population showed positive correlation (r=0.211, r= 0.151 and r= 0.483) with Coccinella septempunctata and negative non-significant correlation with abiotic factor viz., relative humidity. The experiment on effect of intercrops on the incidence of major insect pests showed that all intercrop combinations harboured the lesser population of major insect pests (aphid and diamondback moth) than the sole crop. The cabbage + onion and cabbage + tomato intercrop combinations were significantly less conducive to aphid and diamondback moth infestation as compared to other intercrop combinations. The maximum cabbage equivalent yield (173.72 q/ha) was obtained from the treatment onion as an intercrop at 4:1 ratio which was significantly superior over rest of the treatments except the treatment tomato as intercrop which recorded in cabbage with equivalent yield (149.05 q/ha). The efficacy of nine biopesticides tested against major insect pests of cabbage revealed that azadirachtin 1% EC proved to be the most effective followed by azadirachtin 0.03% EC and Neem oil. The treatments of Beauveria bassiana 1.15 WP, NSKE 5% and Metarhizium anisopliae 1.15 WP stood in middle order of efficacy followed by the treatments of Karanj oil, and Verticillium lecanii 1.15 WP which were proved to be least effective against aphid and diamondback moth of cabbage. The maximum per cent avoidable loss was found to be (18.69%) in the treatment of azadirachtin 1% EC, whereas, minimum in untreated control. The highest benefit cost ratio was found in the azadirachtin 1% EC (8.79) followed by NSKE and azadirachtin 0.03% EC. The yield showed that azadirachtin 1% EC treated plants maximum yielded and it was followed by azadirachtin 0.03% EC and Neem oil.ThesisItem Open Access Varietal Resistance and Efficacy of Novel Insecticides against Sucking Insect Pests of Clusterbean, Cyamopsis tetragonoloba (L.) Taub.(2022) Choudhary, Anita; Kumawat, K.C.Investigation on „Varietal resistance and efficacy of novel insecticides against sucking insect pests of clusterbean, Cyamopsis tetragonoloba (L.) Taub. were carried out at Agronomy Farm of S.K.N. College of Agriculture, Jobner (Rajasthan) during Kharif, 2021. Out of ten varieties of clusterbean crop screened for their comparative resistance against leafhopper, whitefly and aphid, none of them was found completely free from infestation. The varieties RGC-197 and RGC-986 were categorized as highly resistant; RGC-1055, RGC-12-1, RGC-1017, RGC 1066 and RGC-1038 as moderately resistant and RGC-1002, RGC-1003 and RGC-1033 as least resistant against leafhopper. The varieties RGC-1017 and RGC-986 were categorized as highly resistant; RGC-197, RGR-12-1, RGC 1066, RGC-1055 and RGC-1038 as moderately resistant and RGC-1002, RGC-1003 and RGC-1033 as least resistant against whitefly. The varieties RGC-197 and RGC-1017 were categorized as highly resistant; RGC-1038, RGR-12-1, RGC-1055 and RGC-1033as moderately resistant and RGC-1003 and RGC-1002 and RGC-1066 as least resistant to aphid. The days to flower initation, plant height, pod length and fibre had non significant correlation. The trichome density, pod width, number of pods per plant, seed yield and total phenol had negative significant correlation, whereas the free amino acid, chlorophyll and mositure content had positive significant correlation with leafhopper, whitefly and aphid populations. The bioefficacy of newer insecticides tested against leafhopper, whitefly and aphid on clusterbean revealed that diafenthiuron 50 WP 0.05 per cent (88.14%), chlorfenapyr 0.01 per cent (84.62%) and flubendiamide 39.35 EC 0.01 per cent (82.12%) were found most effective against leafhopper. In case of whitefly, pyriproxyfen 0.005 per cent, diafenthiuron 0.05 per cent and dimethoate 0.03 per cent (90.56 – 93.65% reduction) were found most effective. In case of aphid, the most effective treatments were diafenthiuron 50 WP 0.05 per cent (95.62% reduction), buprofezin 25 SC 0.04 per cent (93.62%) and dimethoate 30 EC 0.03 per cent (91.82% reduction). The buprofezin 0.04 per cent and pyridalyl 0.015 per cent (5.66 – 5.67 Coccinella septempunctata/ 10 plants) were observed to inflict least adverse effect on ladybird beetle, vis-à-vis in dimethoate 0.03 per cent, bifenthrin 0.016 per cent, pyriproxyfen 0.005 per cent and pymetrozine 0.025 per cent were observed highly toxic (2.31-3.01 C. septempunctata/ 10 plants)proved highly toxic group. In case of C. zastrowi,arabica pyridayl 10 EC 0.015, pymetrozine 50 WG 0.025 per cent and chlorantraniliprole 18.5 SC 0.01 per cent (3.0 – 3.19 /10 plants) were observed to inflict least adverse effect, vis-à vis in dimethoate 30 EC 0.03 per cent, followed by diafenthiuron 50 WP 0.05 per cent, pyriproxyfen 10.8 EC 0.005 per and pymetrozine 50 WG 0.025 per cent (1.92 - 2.45/10 plants) proved highly toxic group. Maximum yield of 10.31 q/ hectare was registered in the plots treated with dimethoate 30 EC which was at par with diafenthiuron 50 WP (10.20 q/ha) and pyriproxyfen 10.8 EC (10.07 q/ha). These treatments were followed by chlorfenapyr 39.35 EC and chlorantraniliprole 18.5 SC which revealed seed yield of 9.80 and 9.25 q/ ha. The minimum seed yield was recorded in pyridalyl 10 EC and pymetrozine 50 WPviz., 8.33 and 8.49 q/ha., respectively. The other treatments revealed seed yield which ranked in the middle order. The maximum increase in yield over untreated check was record in dimethoate 30 EC (0.03%) treated plots (5.31q ha-1 ). The maximum net return was recorded in the treatment of dimethoate 30 EC 0.03 per cent (` 24,150.00 ha-1 ) followed pyriproxyfen 0.005 per cent (` 23,072.00 ha-1 ) and diafenthiuron 50 WP 0.05 per cent (` 22,460.00 ha-1 ). The maximum benefit cost ratio was recorded in the treatment of pyriproxyfen 10.8 EC 0.005 per cent(10.13) followed by dimethoate 30 EC 0.03 per cent (10.06) and diafenthiuron 50 WP 0.05 per cent (6.34).ThesisItem Open Access Dissipation and Persistence Kinetics of Fipronil and Flubendiamide on Cabbage and Monitoring of Insecticide Residues in Vegetables(2022) Jat, Hansa Kumari; Jakhar, B.L.Dissipation and Persistence Kinetics of Fipronil and flubendiamide on Cabbage and Monitoring of insecticide Residues in Vegetables was studied, following the application at recommended dose (40 and 18.24 g a. i. ha-1 ), respectively and double of the recommended dose (80 and 36.48 g a. i. ha-1 ), respectively, in the Division of Entomology, Pesticide Residue Laboratory, Rajasthan Agricultural Research Institute, Durgapura, Jaipur (Rajasthan) during (2020-21). The persistence study on cabbage recorded the average initial deposit of pesticide fipronil, its three metabolites desulfinyl (MB046513), sulfide (MB045950) and sulfone (MB046136) were 0.641, 0.377, 0.065, and 0.327 respectively and flubendiamide on cabbage was recorded as 0.292 mg kg-1 at recommended dose, while at double of the recommended dose, the average initial deposit were 1.077, 0.737, 0.115, and 0.677 for fipronil and its metabolites and 0.506 mg kg-1 for flubendiamide. The control sample of the cabbage show the residue of the fipronil, its three metabolites and flubendiamide, respectively. The residues half-life (RL50) values were 2.4, 2.7, 2.7, and 2.6 days for fipronil and its metabolites at recommended dose and 3.6 days for flubendiamide while at double of the recommended doses, it is 4.3, 2.6, 3.6, 2.9 and 4.5 for respectively. The waiting periods for the respective pesticides were worked out at their limit of determination (0.001 and 0.05 mg kg-1 for fipronil, its metabolites and flubendiamide) due to lack of MRL value by the FSSAI. In case of soil samples the residues at harvest time of cabbage crop was not detected in the recommended dose and double of the recommended dose, respectively. In decontamination studies, acetic acid treatment was significantly superior to rest of the treatments followed by lukewarm water, NaHCO3 5 percent, NaCl 1 percent NaCl, KMnO4 and tap water washing were recorded in reduction of fipronil and its metabolites residues. While in reduction of flubendiamide residues, lukewarm water treatment was significantly superior to rest of the treatments followed by acetic acid 5 percent, NaHCO3 5 percent , NaCl 1 percent, KMnO4 and tap water washing. Out of 40 samples of different farmgate vegetables analysed, 10 vegetable samples (25%) were detected with different pesticides residues. While, out of 40 market vegetables samples analysed, 12 vegetable samples (30%) were found contaminated with different pesticide residues. None of the samples showed pesticide residues exceeding the MRL in farmgate and market samples. Therefore, the study concluded that fipronil was the most persistent followed by desulfinyl, sulfone, sulfide and flubendiamide as least persistent among test pesticides on cabbage. The safe waiting period on cabbage were suggested as 5, 6, 3, 6 and 6 days at recommended dose and 10, 7, 7, 7 and 8 days at double of the recommended dose for fipronil, its metabolites and flubendiamide, respectively. In case of fipronil and its metabolites, acetic acid was found as the most effective decontamination process. While in case of flubendiamide luke warm water was significantly superior to rest of the treatments. Pesticide monitoring study is a continuous one and the real dimension of the problem may be apprehended only after widespread monitoring with adequately large sample sizeThesisItem Open Access Population Abundance and Eco-friendly Management of Pest Complex on Okra, Abelmoschus esculentus (L.) Moench under Semi Arid Agro-ecosystem of Rajasthan(2022) Choudhary, Pradeep; Dhaka, S.R.The study on “Population Abundance and Eco-friendly Management of Pest Complex on Okra, Abelmoschus esculentus (L.) Moench under Semi Arid Agro-ecosystem of Rajasthan” was carried out at Rajasthan Agricultural Research Institute, SKNAU, Durgapura, Jaipur during years 2018 and 2019. Observations on population abundance of pest complex in okra showed whitefly population peak level in last week of September during 2018 and in first week of October during 2019. Minimum temperature during 2018 and morning and evening relative humidity and rainfall during 2019 showed significant and negative influence on population of whitefly. The leafhopper attained the peak in last week of August during 2018 and 2019. During 2018, maximum temperature, morning and evening relative humidity and rainfall showed positive and significant correlation with leafhopper population. Mite pest reached the peak in second week of October. During 2018, maximum temperature showed positive, while, minimum temperature and morning and evening relative humidity showed significant and negative correlation with mite population. Likewise, the influence of minimum temperature and morning and evening relative humidity was significant and negative on mite abundance during 2019. Infestation of shoot caused by shoot and fruit borer reached the maximum level in second week of September during both the years. Here, maximum temperature exhibited significant and negative influence during 2018, while, morning and evening relative humidity showed significant and positive influence during 2019 on shoot infestation. The fruit damage was recorded at maximum level on number and weight basis in last picking done in fourth week of October during both the years. The influence of minimum temperature and morningThesisItem Open Access Population Dynamics and Management of Carpomyia vesuviana Costa on Ber, Ziziphus mauritiana (L.(2022) BAGARIA, SANJAY KUMAR; Bairwa, D.K.Investigations on “Population Dynamics and Management of Carpomyia vesuviana Costa on Ber, Ziziphus mauritiana (L.)” were carried out at Asalpur farm, S.K.N College of Agriculture, Jobner during October, 2021 to March, 2022. The Infestation of ber fruit fly on cultivar Gola started in the first week of November and gradually increased and reached its peak in the first week of February on number basis and in the third week of January on weight basis. A non-significant negative correlation was observed between infestation of fruit fly with maximum and minimum temperature. The morning and evening relative humidity and rain fall showed non-significant positive correlation with the incidence of fruit fly. Wind velocity showed significant positive correlation with the incidence of ber fruit fly. A significant difference was found in marketable yield between the protected and unprotected plots. The average fruit yield per tree of protected plots was 52.13 kg per tree while the average fruit yield of unprotected plots was 32.51 kg per tree. The loss in yield caused by ber fruit fly was 37.61 per cent in unprotected trees as compared to protected treeOut of seven biopesticides tested against ber fruit fly, revealed that spinosad 45 SC 0.01% was found most effective followed by azadirachtin 0.03 EC. The treatment of NSKE 5%, Beauveria bassiana 1.15 WP and Metarhizium anisopliae 1.15 WP existed in moderate group of their efficacy however they were at par to each other. The Neem oil and Karanj oil proved least effective against fruit fly. All the biopesticide increased the marketable yield of ber fruits significantly over the control. The maximum yield (41 kg/tree) was recorded in the plot treated with spinosad 45 SC followed by azadirachtin 0.03 EC (37 kg/tree), NSKE 5% (35.35 kg/tree), Beauveria bassiana 1.15 WP (33 kg/tree) and Neem oil (32 kg/tree). The minimum yield (31 kg/tree and 29.40 kg/tree) was recorded in Metarhizium anisopliae 1.15 WP and Karanj oil. Maximum increase in yield over control was recorded in the plot treated with spiosad 45 SC (37.91%) followed by azadirachtin 0.03 EC (34.05%), NSKE 5% (31.85%), Beauveria bassiana 1.15 WP (25.71%) and Neem oil (22.48%). whereas, The minimum increase in yield over control was found in Metarhizium anisopliae 1.15 WP (19.71%) and Karanj oil (18.28%) The highest incremental cost benefit ratio (ICBR) of 4.03 was computed in spinosad followed by Beauveria bassiana (2.62), azadirachtin (2.60), Neem oil (2.41) and NSKE (2.16). The lowest B:C ratio 1.58 was obtained in Karanj oil and 2.0 Metarhizium anisopliaeThesisItem Open Access Biointensive Management of Major Sucking Insect Pests of Groundnut, Arachis hypogaea (L.) in Semi arid Ecosystem of Rajasthan(2022) Priyanka; Khinchi, S.K.The field experiment on “Biointensive Management of Major Sucking Insect Pests of Groundnut, Arachis hypogaea (L.) in Semi-arid Ecosystem of Rajasthan” was conducted for two consecutive years 2020 and 2021 during the Kharif, season at Agronomy Farm, S.K.N. College of Agriculture, Jobner (Rajasthan). The incidence of the aphid Aphis craccivora started in the first week of August in both the years. The population of aphid gradually increased and reached to its peak in the first week of September and last week of August during Kharif, 2020 and 2021 respectively. The incidence of leafhopper, Empoasca kerri and thrips Scirtothrips dorsalis appeared in the fifth and fourth week of July in both the years. The leafhopper and thrips population reached to its peak in the second week of September in 2020 and the first week of September in 2021. The incidence of ladybird beetle, Coccinella septempunctata and syrphid fly Xanthogramma scutellare appeared from second week of August to second week of October during 2020 and 2021. The correlation studies indicated that the aphid, leafhopper and thrips population had significant positive correlation with relative humidity (r= 0.71, r= 0.62 and r= 0.60) and (r= 0.64, r= 0.77 and r= 0.75) during both the years 2020 and 2021, respectively. Whereas the leafhopper and thrips population had significant positive correlation with (r= 0.59 and r= 0.61) minimum temperature in the Kharif, season 2021. In the experiment it was observed that the predators, ladybird beetle and syrphid fly had significant positive relationship with aphid, leafhopper and thrips population during both the years. Out of fifteen genotypes of groundnut screened against major sucking insect pests four genotypes viz., RG-632-1, RG-559-3, Girnar 4 and RG-633 were categorized as least susceptible against all the sucking insect pests under the study. Whereas, RG-622-5, RG-382, RG-638, RG-628, RG-621, TG-37-A and RG-639 as moderately susceptible and RG-624, RG-425, RG-510 and RG-578 as highly susceptible to aphid infestation. Eight genotypes viz., RG-382, RG-638, RG-622-5, RG-628, TG-37-A, RG-639, RG-425 and RG-621 were moderately susceptible and three genotypes viz., RG-624, RG-510 and RG-578 were highly susceptible to leafhopper infestations. Similarly, the genotypes RG-382, RG-638, RG-622-5, RG-628, RG-621, RG-624 and RG-639 found to be moderately susceptible and RG-425, RG-510, TG-37-A and RG-578 as highly susceptible to thrips infestation. The biophysical characters of different groundnut genotypes viz., trichome density, leaf thickness, relative water content and wax content of leaf had significant negative correlation with mean aphid, leafhopper and thrips populations. Among the biochemical parameters total phenol had significant negative correlation while, total sugar, free amino acid content and chlorophyll content had significant positive correlation with mean aphid, leafhopper and thrips populations. Among different treatments applied to control sucking insect pests of groundnut in the study, the treatments imidacloprid 17.8 SL and diafenthiuron 50 WP were proved to be most effective. The next effective treatments were pyriproxyfen 10 EC, spiromesifen 22.9 SC, chlorantraniliprole 18.5 SC, novaluron 10 EC and NSKE 5%, while the least effective treatments i.e. L. lecanii, B. bassiana and M. anisopliae against major sucking insect pests of groundnut. The maximum yield of groundnut pod 25.21 q ha-1 and 24.54 q ha-1was obtained in the plots treated with imidacloprid 17.8 SL and diafenthiuron 50 WP, respectively. The highest benefit cost ratio was obtained with imidacloprid 17.8 SL (28.39) followed by pyriproxyfen 10 EC (17.26) and diafenthiuron 50 WP (15.33) treatments. The different IPM modules that were evaluated on sucking insect pests of groundnut indicated that the maximum per cent reduction insucking insect pests populations was observed in modules M10 (farmer practices - imidacloprid) followed by M7, M1 and M9 and categorized as most effective IPM modules. The minimum per cent reduction in sucking insect pests population was recorded in modules M5, M2 and M8 and ranked as least effective group of modules. The modules M6, M4 and M3 were found to be moderately effective IPM modules. The maximum pod yield of groundnut 27.08 q ha-1 was obtained in the modules M10 followed by M7 (25.92 q ha-1 ), M1 (25.59 q ha-1 ) and M9 (25.25 q ha-1 ). On the basis of cost benefit ratio the modules M10 gave the highest ratio (25.62) followed by M7 (12.35) and M1 (12.15ThesisItem Open Access Management of Major Insect Pests of Indian Gooseberry (Phyllanthus emblica L.) with Special Reference to Biorational Approach(2022) CHOUDHARY , ARJUN LAL; Kumawat, K.C.The investigation entitled ‘Management of major insect pests of Indian gooseberry (Phyllanthus emblica L.) with special reference to biorational approach.’ was conducted at Asalpur Farm, S. K. N. College of Agriculture, Jobner (Rajasthan) during the year 2019 and 2020. The study on the succession and incidence of insect pests revealed that the leaf roller, Caloptilia (=Gracillaria) acidula (Meyr.);shoot gall maker, Hypolamprus (=Betousa) stylophora (Swinhoe); bark eating caterpillar, Indarbela tetraonis Moore, I. quadrinotata (Walker) and fruit borer, Deudorix (=Virachola) isocrates (Fab.) were recorded as major insect pests quantitatively at different phenology of Indian gooseberry.The peak population (46.60 and 44.80/ 5 shoots) of leaf roller was recorded in the last week of September (39th SMW), 2019 and 2020. The leaf roller population had positive significant correlation (r=0.44, 0.39, respectively during 2019 and 2020) with the minimum temperature.The maximum shoot gall maker damage of 6.60-7.40 per cent was observed in last week of August (35th SMW) to first week of September (36th SMW).The mean relative humidity had significantly positive correlation (r=0.57, 0.65) during both the years of investigation. The damage of bark eating caterpillar was observed at its peak (4.0-5.0/ 5 plants in 2019 and 2020) in first week of September. The bark eating caterpillar had significantly positive correlation (r=0.54, 0.61) during both the years with the mean relative humidity. The peak infestation of fruit borer was recorded to be 16.00 and 15.00 per cent in 2019 and 2020, respectively in the 38th SMW (3rd week of September). The natural enemies (parasites and predators) associated with the insect pests on Indian gooseberry were Trichogramma chilonis Ishii; Tetrastichus sp.; green lacewing, Chrysoperala zastrowi arabica (Henry et al.); preying mantid, Mantis religiosa (L.); ladybird beetle, Menochilus sexmaculatus (Fab.); yellow wasp, Polistes hebraeus (F.); assassin bug, Harpactor costalis (Stal); spider and black ant, Camponotus compressus (Fab.) but meagre in numbers. The incubation period of eggs of shoot gall maker, H. stylophora was observed to be 5-7 days at ambient temperature, longevity of the caterpillar 21-27 days, pupal duration 9-12 days and adult longevity 6-10 days (female) and 6-9 days (male). Out of nine varieties of Indian gooseberry screened, NA-10, Kanchan, Gujarat-2, NA-20, Chakaiya, Gujarat-1 and Local were moderately susceptible to leaf roller; Chakaiya and Kanchan were least susceptible to shoot gall maker; Chakaiya was least susceptible to bark eating caterpillar and Chakaiya and Kanchan were categorized as least susceptible to fruit borer. The correlation (r) of all four major insect pests infestation was negatively significant with fruit yield. The TSS (%) of fruit had positive significant correlation with fruit borer infestation. The phenol had negative significant correlation, whereas, sugar had positive significant correlation with four major insect pests. Out of twelve treatments of newer insecticides and biopesticides, the minimum population of leaf roller was found in diafenthiuron, chlorantraniliprole, chlorfenapyr, standard check (quinalphos/ malathion) and pyriproxyfen treated plants which were found at par. The minimum shoot gall maker infestation was recorded on the plants treated with standard check (quinalphos/ malathion), spinosad and chlorantraniliprole which were statistically at par among each other. The minimum bark eating caterpillar infestation was evident in the spinosad and emamectin benzoate which differed non significantly with each other. The minimum fruit borer infestation was recorded in the plants treated with spinosad, emamectin benzoate, standard check (quinalphos/ malathion) and chlorfenapyr which were statistically at par among each other. The maximum fruit yield was observed in the diafenthiuron 50 WP, chlofenapyr 10 SC, chlorantraniliprole 18.5 SC, pyriproxyfen 10.8 EC, spinosad 45 SC, standard check (quinalphos 25 EC/ malathion 50 EC) and emamectin benzoate 5 SG viz., 169.75-177.95 q/ ha which were found at par among each other and significant over other treatments. The maximum benefit cost ratio was exhibited in spinosad 45 SC (24.56) followed by pyriproxyfen 10.8 EC (21.94), emamectin benzoate 5 SG (16.59) and standard check (quinalphos 25 EC/ malathion 50 EC)ThesisItem Open Access Management of Pulse Beetle, Callosobruchus chinensis (L.) in Stored Chickpea, Cicer arietinum (L.) with Special Reference to Ecofriendly Approaches(2022) ARUL. G; Kumawat, K.C.The investigations on the ‘Management of pulse beetle, Callosobruchus chinensis (L.) in stored chickpea, Cicer arietinum (L.) with special reference to ecofriendly approaches’ was conducted in the Department of Entomology at S.K.N. College of Agriculture, Jobner (Rajasthan) during 2021. Out of five plant oils evaluated at three dosage levels (5.0, 7.5 and 10%) and four insecticides at two dosage levels (0.05 and 0.1%) as surface protectants of packaging material, minimum adult emergence was recorded in deltamethrin 2.8% EC at 0.1% (0.67- 3.33 adults) and neem oil 10% (1.33- 8.33 adults). Similar trend of weight loss was recorded in these treatments. Minimum grain damage was recorded in deltamethrin 2.8% EC at 0.1 % (0.33- 2.33%). It was followed by deltamethrin 2.8% EC at 0.05% (0.67- 5.00%) and spinetoram 11.7% SC at 0.1% (1.33- 6.33%). No adverse effect of surface treated gunny bags was registered on germination of the chickpea seeds. Out of seven plant oils, evaluated at three dosage levels (0.1, 0.5 and 1.0%) as seed protectants against pulse beetle, C. chinensis, the minimum fecundity was observed in mustard oil 1.0% (7.67- 23.00 eggs). It was followed by sesame oil 1.0% (11.67- 31.67 eggs) and cotton seed oil 1.0% (13.67- 35.67 eggs). The adult emergence was minimum in mustard oil 1.0% (0.00- 2.67 adults). It was followed by sesame oil 1.0% (0.00- 3.33 adults) and cotton seed oil 1.0% (0.00- 4.67 adults). No adult emergence took place upto 60 days of treatment of chickpea seeds with mustard oil 1.0%. It was followed by sesame oil 1.0% and cotton seed oil 1.0%. Similar trend of seed damage and weight loss was recorded in these treatments. No adverse effect on germination of chickpea seedsOut of five insect growth regulators evaluated at four dosage levels (1, 5, 10 and 15 ppm), three neem products and a standard check evaluated at one dosage level (2 ppm) as seed protectants against pulse beetle, C. chinensis, the minimum fecundity was observed in NSKE 5.0% (0.00- 8.33 eggs). It was followed by azadirachtin 0.15% EC at 1500 ppm (0.00- 11.33 eggs) and neem oil 1% (0.00- 11.33 eggs). No egg laying was recorded upto 60 days of treatment of chickpea seed with azadirachtin 0.15% EC at 1500 ppm. No adult emergence was recorded upto 120 days of treatment of chickpea seeds with azadirachtin 0.15% EC at 1500 ppm, NSKE 5.0% and neem oil 1%. Similar trend of seed damage and weight loss was recorded in these treatments. No adverse effect on germination of chickpea seeds was recorded in the insect growth regulator treated seeds. Out of eight exposure periods of UV rays (2, 4, 6, 8, 10, 12, 14 and 16 min.) against pulse beetle, C. chinensis, the minimum egg laying was observed on treatments exposed to 16 min (42 eggs/ 2 females) followed by 14 min (48 eggs/ 2 females) and 12 min (54 eggs/ 2 females). Similar trend of hatchability percentage, pupation percentage and adult emergence was recorded in these treatments. No adverse effect on germination of chickpea seeds was recorded in UV radiation treated seeds. Out of six coloured polythene bag exposed to solar radiation for three exposure periods viz., 5, 10 and 15 hours against pulse beetle, C. chinensis, no adult emergence was observed in treatments exposed to sun in black and blue colour polythene bags for 15 hours. Least grain damage was observed in black coloured polythene bag (1.84 %), it was followed by blue coloured bag (2.58 %) and green coloured bag (3.26 %). Similar trend of weight loss and adult mortality was recorded in these treatments. The per cent seed germination significantly decreased with increase in exposure periods for each coloured polythene bag.
