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Govind Ballabh Pant University of Agriculture and Technology, Pantnagar

After independence, development of the rural sector was considered the primary concern of the Government of India. In 1949, with the appointment of the Radhakrishnan University Education Commission, imparting of agricultural education through the setting up of rural universities became the focal point. Later, in 1954 an Indo-American team led by Dr. K.R. Damle, the Vice-President of ICAR, was constituted that arrived at the idea of establishing a Rural University on the land-grant pattern of USA. As a consequence a contract between the Government of India, the Technical Cooperation Mission and some land-grant universities of USA, was signed to promote agricultural education in the country. The US universities included the universities of Tennessee, the Ohio State University, the Kansas State University, The University of Illinois, the Pennsylvania State University and the University of Missouri. The task of assisting Uttar Pradesh in establishing an agricultural university was assigned to the University of Illinois which signed a contract in 1959 to establish an agricultural University in the State. Dean, H.W. Hannah, of the University of Illinois prepared a blueprint for a Rural University to be set up at the Tarai State Farm in the district Nainital, UP. In the initial stage the University of Illinois also offered the services of its scientists and teachers. Thus, in 1960, the first agricultural university of India, UP Agricultural University, came into being by an Act of legislation, UP Act XI-V of 1958. The Act was later amended under UP Universities Re-enactment and Amendment Act 1972 and the University was rechristened as Govind Ballabh Pant University of Agriculture and Technology keeping in view the contributions of Pt. Govind Ballabh Pant, the then Chief Minister of UP. The University was dedicated to the Nation by the first Prime Minister of India Pt Jawaharlal Nehru on 17 November 1960. The G.B. Pant University is a symbol of successful partnership between India and the United States. The establishment of this university brought about a revolution in agricultural education, research and extension. It paved the way for setting up of 31 other agricultural universities in the country.

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  • ThesisItemOpen Access
    Varietal screening against insect pest complex of chilli and their management through essential oils
    (G.B. Pant University of Agriculture and Technology, Pantnagar - 263145 (Uttarakhand), 2020-12) Bhatt, Babita; Karnatak, A.K.
    Screening of commonly grown chilli varieties against chilli thrips. To study the influence of crop phenological characters against insect pests of chilli crop and to assess the relationship between them.To assess the effectiveness of plant derivatives against insect pests of chilli. To study the antifeedant activity of plant derivatives against Spodoptera litura and Helicoverpa armigera, these studies were conducted during the rabi seasons in the year 2018-19 and 2019- 2020 under field and laboratory conditions at Pantnagar, Uttarakhand. Among the fifteen commonly grown chilli varieties that were screened against thrips population and leaf curl index (LCI) Pant C-1 recorded minimum thrips population and LCI and it was categorized as moderately resistant. Seven varieties were grouped as moderately susceptible and seven varieties were susceptible. Proline (6.00 micro moles/ g leaf to 4.00 micro moles/ g leaf) and phenol content (15.22 mg/ 10 g leaf to 9.57 mg/ 10 g leaf) were negatively and highly significantly associated with thrips population while protein (7.71 mg/ 10 g leaf to 14.38 mg/ 10 g leaf) and total sugars (25.40 mg/ 10 g leaf to 50.33 mg/ 10 g leaf) were positively and highly significantly associated with thrips population. All the insect pests had positive and highly significant association with plant height. Leaf area had a positive but non significant effect on insect pest population. Number of branches/ plant had a negative and non significant effect with aphids, whitefly, fruit borer, Spodoptera and Coccinella. Number of leaves/ plant had negative and highly significant impact on insect pests and predator population. Petiole length and Internode length had a highly significant while a negative and positive impact on insect pests and predator population. The arthropod diversity was recorded in “Pusa Jwala” variety of chilli. Fifteen species of insect pests, fifteen species of natural enemies and one species of pollinator were recorded from chilli field. Population fluctuation of insect pest was also correlated with abiotic factors where a positive correlation of aphids (r= 0.503* and 0.440*) and thrips (r= 0.393 and 0.421*) was observed with mean temperature. During 2018-19 mean relative humidity had a positive and non significant impact on insect pest and predator population while a negative association was observed in 2019-2020. During both the crop season rainfall was positively associated with pest and predator population. However, sunshine hours was positively associated with pest population during 2018-19 and negatively associated with pest population during 2019-2020. Multiple regression equation was also calculated during both the season. In the year 2018-19 the weather factors caused a variation in the range of 43% to 64% in insect pests and predator population while in 2019-2020 variation of 32% to 53% was observed. Three simultaneous application of Fipronil 200 SC @ 150 ml/ha was found to be most effective in managing all insect pest population. Maximum predator population was observed in the untreated plots followed by plots treated with Linseed oil @ 5%. Overall yield was maximum in Fipronil 200 SC @ 150 ml/ha treatment (7.63 T/ha). The highest cost benefit ratio was obtained in the plots treated with Linseed oil @ 5% (1:0.54 and 1:0.48). The antifeedant activity of essential oil was also calculated against Spodoptera litura and Helicoverpa armigera under laboratory conditions. The mean leaf area consumed by both the larvae (Helicoverpa armigera and Spodoptera litura) was minimum in rosemary oil @ 2% (2.64 cm2) treatment followed by citronella oil @ 2% (3.20 cm2).Maximum leaf area was consumed in untreated control (14 cm2) followed by linseed oil @ 2% (10.26 cm2).
  • ThesisItemOpen Access
    Biochemical and molecular studies of Spodoptera litura (Fabricius) from different regions of Uttarakhand for development of insecticidal resistance
    (G.B. Pant University of Agriculture and Technology, Pantnagar - 263145 (Uttarakhand), 2020-12) Joshi, Rashmi; Gaur, Neeta
    A survey was conducted during 2018 and 2019 and Spodoptera litura (Fabricius) was collected from different districts of Uttarakhand viz., Ramgarh (Nainital District); Mota Haldu (Nainital District); Bhujan (Almora District); Kameri (Bageshwar District); Ganai (Pithoragarh District); Tanakpur (Champawat District); Pantnagar (Udham Singh Nagar District); Chutmalpur (Haridwar District); Dakpathar (Dehradun District). The insect collected were brought to the laboratory and raised to F1 generation for their, chemical, biochemical and molecular assay. It was found in the studies that different populations developed different level of resistance against Rocket, Lethal, Fipronil, Chlorantraniliprole and Indoxacarb. Synergistic studies of PBO and DEM were also conducted with population of Pantnagar and found the role of P450 and GST in exhibiting insecticide resistance. Biochemical and molecular studies of four major detoxification enzymes i.e. Acetylcholinesterase, Carboxylesterase, Glutathione-S-transferase and Cytochrome P450 were also conducted for all the populations collected from different populations. The population of Mota Haldu exhibited highest expression of all enzymes except P450 while the population of Bhujan exhibited sharp rise in P450 activity. The result of the studies conducted revealed presence of different levels of insecticide resistance ranging from extreme resistance to susceptible against insecticide under study.
  • ThesisItemOpen Access
    Studies on host preference, olfactory and functional response of generalist predator, Eocanthecona furcellata (Wolff.)
    (G.B. Pant University of Agriculture and Technology, Pantnagar - 263145 (Uttarakhand), 2020-10) Chaudhary, Devyani; Maurya, R.P.
    The present investigations were carried out at Biocontrol Laboratory, Department of Entomology, Govind Ballabh Pant University of Agriculture and Technology, Pantnagar during 2018-2020. Results on host preference of 2nd nymphal instar, 3rd nymphal instar, 4th nymphal instar, 5th nymphal instar and adult predatory bug of Eocanthecona furcellata revealed that Spodoptera litura followed by Corcyra cephalonica and Spilarctia obliqua were found as preferred host. The percent preference of second, third, fourth, fifth nymphal instars and adult predatory bug were 41.67, 50.00, 58.33, 75.00, 83.00 percent on S. litura, respectively. Results of the host selection by olfactory response revealed that the adult predatory bug preferred odour cell with larval extract of S. litura (48%), followed by larval extract of S. obliqua (32%), C. cephalonica (14%) and control odour cell (8%). The predatory bug was able to complete its immature life in five nymphal instars on live and freeze killed larvae of S. litura and C. cephalonica. The total nymphal period varied from 17.33±0.88 to 21.33±0.33 days. Total life cycle ranged from 31.33±0.33 to 36.33±0.66 days and number of eggs laid varied from 25.33±0.88 to 67±1.15. The consumption rate of nymphal instars ranged from 34.16±1.27 to 51±4.93 percent, 45.83±3 to 68.89±1.11 percent, 59.04±0.95 to 71.33±5.81 percent, 55.83 ± 4.40 to 81.11±1.82 percent. The consumption rate of adult predatory bug on different factitious hosts varied from 75.8±0.54 to 84.79±1.18 percent. The mean consumption rate of different stages of predatory bug ranged from 45.86±0.52 to 59.27±1.98 percent on live and freeze killed larvae of S. litura and C. cephalonica. The results of the study of functional response of fourth, fifth nymphal instars and male and female predatory bug on four, six, twelve days old larvae of S. litura demonstrated a type II functional response at different prey densities. The estimated parameters of attack rate of fourth, fifth nymphal instars ranged from 0.942±0.04 to 1.506±0.199, 0.969±0.017 to 1.161±0.074 prey/ day with a handling time of 0.075±0.017 to 0.58±0.087, 0.027±0.007 to 0.443±0.066 days at different prey densities. The parameters of attack rate estimated for male predatory bug on four, six, twelve days old larvae of S. litura were 0.975±0.014, 0.901±0.033, 0.844±0.092 whereas, for female predatory bug, attack rate was estimated as 0.982±0.015, 0.927±0.033, 0.903±0.032 prey / day, respectively. The handling time of male and female predatory bug varied from 0.024±0.006 to 0.204±0.04 and 0.013±0.007 to 0.099±0.014 days, repectively. The study suggested that the predatory bug, E. furcellata can be mass reared in laboratory conditions using larvae of S. litura and C. cephalonica and could be exploited in various IPM programmes.
  • ThesisItemOpen Access
    Efficacy of Subhash Palekar’s natural formulations against insect pest complex of pigeonpea at Pantnagar, Uttarakhand
    (G.B. Pant University of Agriculture and Technology, Pantnagar - 263145 (Uttarakhand), 2020-12) Mahankuda, Bhabani; Tiwari, Ruchira
    or : Dr. Ruchira Tiwari The present study was carried out to validate the efficacy of four Subhash Palekar’s Natural Formulations (SPNF) namely agniastra, neemastra, dashparni and jivamrit along with panchagavya @3%, desi cow urine and buffalo urine @20% against insect pest complex of pigeonpea under field conditions at NEBCRC, Pantnagar, Uttarakhand during kharif crop seasons 2018-19 and 2019-20. Field experiments were also carried out to study the diversity, succession and population dynamics of different insect pests and natural enemies on pigeonpea along with their correlation with different weather parameters. Whereas, laboratory experiments were also carried out at Department of Entomology, GBPUAT, Pantnagar to study the biology, effect of natural formulations on feeding preference (orientation), feeding inhibition (antifeedant activity) and growth and development of spotted pod borer (Maruca vitrata) and pod bug (Clavigralla gibbosa) on pigeonpea. A total number of twenty-four insects attacking to the pigeonpea crop and their associated nine natural enemies were reported during the study. A constant association of insect pests with the crop was observed, starting from the vegetative stage to maturity. On the basis of abundance and population dynamics of different insect pest; jassids (5.18/plant), leaf folder (11.10/plant) and leaf webber (2.57/plant) can be considered as minor pests during the vegetative crop, as they didn’t cause any significant damage to the crop. Whereas, with the onset of flowering, attack of spotted pod borer (24.7/plant), pod bug (14.8/plant) and gram pod borer (7.13/plant) were reported on the crop. These three pests can be categorized as major pests during the reproductive stage causing significant damage to the economic parts of the crop and contributing to yield loss. A total number of three sprays were carried out during the field experiment to study the efficacy of different natural formulations against spotted pod borer, pod bug and gram pod borer. The order of efficacy remained the same as Chlorantraniliprole followed by agniastra, neemastra, dashparni, desi cow urine, panchagavya, buffalo urine and jivamrit for spotted pod borer and gram pod borer during both the kharif crop seasons 2018-19 and 2019-20. However, dashparni was found most effective for pod bug amongst all the natural formulations. Agniastra was found most effective amongst the natural formulations with 6.09 maruca webs/plant. The pooled mean population of pod bugs varied from 1.65-5.67 bugs/plant with minimum and maximum population in chlorantraniliprole and untreated control plots, respectively. Whereas, dashparni was found the best among the natural formulation with 1.81 bugs/plant. Similarly, Chlorantraniliprole was found most effective against Helicoverpa larvae followed by agniastra with 1.65 and 1.75larvae/plant, respectively as compared to 5.05 larvae/plant in plots of untreated pigeonpea crop. These natural formulations didn’t have any significant adverse effects against the natural enemies. Similarly, all the natural formulations were found effective against spotted pod borer and pod bug under the laboratory experiment. However, among SPNF, agniastra was found most effective against spotted pod borer and dashparni against pod bug during all the laboratory experiments. Amongst the treatments, agniastra reported least number of insect orientation (0.08) and low preference index (0.33) with no healthy adult emergence of spotted pod borer. Whereas, dashparni reported the least number of insect orientation (0.08) and low growth index value (1.36) against pod bug. The results obtained through present experiments clearly revealed the efficacy of Subhash Palekar’s natural formulations against different insect pest of pigeonpea. Thus, it can be concluded that in order to reduce the hazards of chemical farming, Subhash Palekar’s natural formulations can safely be incorporated in different IPM modules of pigeonpea for sustainable insect pest management.
  • ThesisItemOpen Access
    Studies on integrated management and developing forecasting model for mango hoppers
    (G.B. Pant University of Agriculture and Technology, Pantnagar - 263145 (Uttarakhand), 2020-02) Rakesh Kumar; Srivastava, Poonam
    Mango hoppers, Amritodus atkinsoni (Leth.) was present throughout the year on mango at Pantnagar during the study period 2017-18 with the peak activity of 8th SW (panicle initiation stage) and 14th SW (fruiting stage). Hoppers population increased with high temperature and low relative humidity. Among all the traps installed for monitoring of mango hopper yellow colored traps attracted higher hoppers population (21.50 and 22.00 hoppers/ trap/week) in the study period. Correlation of mango hoppers on yellow traps with sunshine revealed non-significantly positive (r = 0.48) followed by blue traps (r = 0.33 and 0.34) and green traps (r =0.39 and 0.43). Sticky traps installed in four cardinal direction cleared highest hoppers population attracted on traps in east direction followed by west, south and least in north directions. Hoppers population correlated with various weathers parameters showed significant positive with temperature while significant negative with relative humidity, sunshine, wind velocity and evaporation also significantly positive correlated with hoppers population, whereas least influence by rainfall. Population dynamics of natural enemies showed abundance of predators such as coccinellids, preying mantis, green lace wing, mantispid fly while parasitoids as braconids and ichneumonid were present in mango trees throughout the year. Various plant oils and insecticides were tested against mango hoppers. It has been found that among plant oils, neem oil and citronella oil (@ 3ml/l) were effective to reduce hoppers population. While spray with insecticides as imidacloprid (0.3 ml/l) with thiamethoxam (0.32 g/l; at second spray) gave best result with lowest hoppers population and highest per cent reduction over control. Similarly highest yield per tree was also obtained in tress treated with imidacloprid and thiamethoxam (70.13, 75.00 and 65 Kg/tree, respectively) in study period. Cost benefit ratio was obtained highest (1: 3.37, 1: 3.51 and 1:4.12) in the treatment T10. Among the entomopathogenic fungi V. leccanii showed better effect than M. anisopliae and B. bassiana. The combination of V. leccanii and buprofezin proved superior to all the treatments followed by buprofezin and neembicidine. Weather based forecasting model developed by regressing peak hopper population with different weather parameters highest regression value (0.91) with least standard error (0.83) and RMSE value with 0.96 validate the model to forecast the pest population for future management strategy.
  • ThesisItemOpen Access
    Mass multiplication of Clonostachys rosea and its pathogenicity against insect pest
    (G.B. Pant University of Agriculture and Technology, Pantnagar - 263145 (Uttarakhand), 2020-11) Pal, Khanika; Pandey, Renu
    A study regarding collection, isolation, identification pathogenicity, mass multiplication and compatibility with botanical extracts was conducted for Clonostachys rosea. This entomopathogen was isolated from G. B. P. U. A & T Pantnagar, Udhamsingh Nagar, Uttrakhand; during 2018-2020. Results regarding the mass multiplication of Clonostachys rosea depicted that best bio-substrate is Maize grains+ Yeast+ Dextrose with highest biomass on 14 days (38.07 gm) and highest conidial count and germination percent on 21 days (3.33× 104/ml and 79.13%). In the pathogenicity test against Mango hopper (Amritodus atkinsoni), Whitefly (Bemisia tabaci), Okra jassids (Amrasca sp.), Aphids (Lipaphis erysimi) and Tobacco caterpillar (Spodoptera litura); it was found that the highest mean mortality was obtained for Mango Hoppers (93.33%) at a concentration of 4× 109 conidia/ml, for whitefly, the highest mortality documented was 70.00% at a concentration of 3.5× 108 conidia/ml and for okra jassids, the highest mortality observed was 80.00% at a concentration of 3.5× 108 conidia/ml . No mortality was observed for Aphid and Tobacco caterpillar. In the compatibilty test of Clonostachys rosea with extracts of Marigold, Periwinkle, Custard apple and Crysanthemum; it was observed that Marigold extract was highly incompatible at concentration of 75% with mean radial growth of 0.87 cm (reduction over control of 81.48%) and mean conidial count of 0.25× 104/ml (reduction over control of 90.91%). While Periwinkle extract was found to be least toxic to C. rosea. The highest concentration of 75% resulted in mean radial growth of 3.17cm (reduction over control of 32.55%) and mean conidial count of 1.50× 104/ml (reduction over control of 45.45%). Thus from the study it was concluded that the fungus is potential in controlling insect pest and can be included in IPM module. And further studies should be conducted to check the bioefficacy of the fungus against other major insect pest prevalent in the ecosystem.
  • ThesisItemOpen Access
    Compatibility of entomopathogens with biorationals and insecticides against major insect pests of green gram
    (G.B. Pant University of Agriculture and Technology, Pantnagar - 263145 (Uttarakhand), 2020-11) Dudpuri, Kuldeep Kumar; Purwar, J.P.
    The present investigation was conducted during kharif season of 2019-20 at Norman. E. Borlaug. Crop Research Centre of G.B. Pant University of Agriculture and Technology, Pantnagar (Uttarakhand) and Insect Pathology Laboratory, Department of Entomology, and Central Analytical Laboratory, Department of Soil Science, with the objective to test compatibility of B.bassiana and B.thuringiensis with botanical insecticides, insect growth regulators (IGRs) and with chemical insecticides. Field trial was conducted to evaluate the efficacy of combinations of entomopathogens with biorationals and chemical insecticides against major insect pests of green gram. Compatibility study of B.bassiana with different biorationals and chemical insecticides indicated that buprofezin, thiamethoxam, pyriproxifen were found compatible with B. bassiana at recommended dose, while azadirachtin was found incompatible with B. bassiana. Compatibility study of B. thuringiensis with different biorationals and chemical insecticides showed that M. azedarach poisoned media exhibited minimum inhibition and found higly compatible to B. thuringiensis population growth at all its lethal and sublethal doses followed by thiamethoxam 25WG, chlorantraniliprole 18.5SC, buprofezin 25SC, pyriproxifen 10EC and lambda cyhalothrin 5EC while azadirachtin 10000 showed maximum inhibition to growth of B.thuringiensis at all of its lethal and sublethal doses. Combinations of entomopathogens with biorationals and chemical insecticides were evaluated against major insect pests (S.litura, S.obliqua and M.vitrata) of green gram in field conditions. Bacillus thuringiensis in combination with other insecticides was found more effective to combat the lepidopteran’s population than B. bassiana. The combinations like B. thuringiensis + chlorantraniliprole 18.5SC, B. thuringiensis + azadirachtin 10000ppm, B. bassiana + chlorantraniliprole 18.5SC and B. bassiana + azadirachtin 10000ppm were found more effective against S. litura, S. obliqua and M. vitrata while B.bassiana+ buprofezin combination was found least effective
  • ThesisItemOpen Access
    Development of different modules for management of major insect pests of okra in tarai region of Uttarakhand
    (G.B. Pant University of Agriculture and Technology, Pantnagar - 263145 (Uttarakhand), 2020-01) Rawat, Nistha; Karnatak, A.K.
    The present investigation was carried out during two seasons i.e., kharif season 2017 and winter season, 2017-2018 at Vegetable Research Centre (VRC), G.B. Pant University of Agriculture and Technology, Pantnagar. Occurrence of 22 species of insect pests belonging to 4 orders and 14 families found attacking on Okra crop. Among the various pest complex of Okra the order Hemiptera occupied largest number of species constituting 6 pests species of total pests followed by Lepidoptera(4 species), Coleoptera (2 species) and one each belonging to orders, Orthoptera, Thysanoptera, Diptera and Acarina. In kharif, 2017 the pooled incidence of Earias spp. was observed from 28th standard metrological week (SMW) to 39th standard metrological week (SMW). The pest marked its first appearance by average of 2.1 larvae/plant at 32nd standard metrological week (SMW). The population gradually increased and attained maximum (5.9 larvae/plant) in the 37th standard metrological week (SMW). The incidence of the Amrasca biguttula biguttula was recorded from 30th standard metrological week to 39th standard metrological week (last week of September).The first appearance of this pest was marked by an average of 0.83 leaf hopper/3leaf in 30th standard metrological week.The population gradually increased and attained maximum (11.13 hopper/3 leaves) in the 37th standard metrological week (SMW) followed by gradual decrease in population till 39th standard metrological week (SMW). While, incidence of Bemisia tabaci, was recorded from 30th standard metrological week to 39th standard metrological week and Aphis gossypii was observed throughout the crop season exhibiting a population range from 0.01 to 4.03. The population gradually increased and attained maximum (29.7aphids/3leaf) in the 36th standard metrological week (SMW). Different Organic and IPM Modules were developed for management of major insect pest in okra.It revealed that Organic Module 3 in kharif season and Organic Module 4 and Organic Module 3 in winters season gave significant results followed by IPM Module1 for the management of Okra shoot and fruit borer (Earias vittella Fab.). But in case of sucking pests (whitefly, hoppers and aphids) chemical treatments T6 (Imidacloprid 17.8 SL) and T7 (Acetamiprid 20% SP) gave significantly best results followed by IPM Modules T5 and T6. In case of sucking pests (whitefly, hoppers and aphids) the population of pest in organic modules were significantly lower than untreated control but not statistically similar to chemical and IPM modules. The population of natural enemies on both seasons were statistically similar in organic modules, untreated control, IPM Modules (all at par with each other) and the lowest population of natural enemies was found in both chemical fields although it was not significantly lower but as compared to other treatments. During kharif 2017, yield of Okra under different treatments varied significantly from 10.01 to 14.28 T/ha. Maximum fruit yield (14.28 T/ha) was recorded from plot treated with Imidacloprid 17.8 SL @ 20g a.i./ha. This was followed by Acetamiprid @ 600 g a.i./ha (14.20 T/ha) IPM Module 1(14 T/ha), Organic Module 3 (13.79 T/ha), IPM Module 2 (13.50 T/ha), Organic Module 4 (13.49 T/ha), Organic Module 1 (13.29 T/ha), Organic Module 3 (13.11 T/ha). Lowest fruit yield (10.01 T/ha) on the contratry was recorded with control plot. Also in winter 2017-2018 the maximum yield was recorded in Imidacloprid 17.8 SL @ 20g a.i./ha (15.03 T/ha). The yield of Okra under different treatments varied significantly from 9.7 to 15.03 T/ha. Maximum fruit yield was recorded from plot treated with Imidacloprid 17.8 SL @ 20g a.i./ha. This was followed by Acetamiprid @ 600g a.i./ha (14.88 T/ha), IPM Module 1 (14.75 T/ha), Organic Module 3 (14.70 T/ha), IPM Module 2 (14.48 T/ha), Organic Module 4 (14.04 T/ha), Organic Module 1(13.99 T/ha), Organic Module 3 (13.61 T/ha). Lowest fruit yield (9.7 T/ha) as recorded with control plot. Maximum benefit cost ratio was observed in both chemical Modules (Imidacloprid 17.8 SL with 1:2, Acetamiprid 20% SP @ 600g/ha with 1.93) followed by both IPM Modules (IPM 1 with 1:1.89 and IPM 2 with 1:1.82), Organic Modules 2 with 1:1.56, Organic Modules 4 with 1: 1.37, Organic Modules 1 with 1:1.37, Organic Modules 3 with 1:1.34. Organic Modules 2 was comparatively economical than other Organic Modules, but more benefit was observed in Chemical and IPM Modules. However, the yield was higher in chemical modules but this may lead to pest resurgence, problem of secondary pest outbreak and affect the food chain by leaving residues on crop. Hence, to overcome these ecological as well as health problems the basic and important solution is to return back to organic farming. Nowadays, due to awareness among people they prefer organic produce and there may be higher profitability for farmer by adopting organic approach.
  • ThesisItemOpen Access
    Eco-friendly management of brinjal shoot and fruit borer, Leucinodes orbonalis (Guen.) at Pantnagar, Uttarakhand
    (G.B. Pant University of Agriculture and Technology, Pantnagar - 263145 (Uttarakhand), 2020-11) Choudhary, Gourav; Gaur, Neeta
    The present studies were conducted on “Eco-friendly management of brinjal shoot and fruit borer, Leucinodes orbonalis (Guen.) at Pantnagar, Uttarakhand” at G.B. Pant University of Agriculture and Technology, Pantnagar, Uttarakhand during Kharif crop season 2019-20. The Incidence of shoot and fruit borer, L. orbonalis in brinjal crop, shoot infestation attained peak (45.68 %) in all control plots during first week of October (40th-standard week). The fruit infestation increased and attained its peak (44.65%) in all control plots during the last week of October month (43th-standard week). The brinjal shoot and fruit borer (BSFB) population showed Non-significant positive correlation with the maximum temperature, morning relative humidity and also with Sun-shine hours. Whereas it showed Nonsignificant negative correlation with all other remaining weather parameters like minimum temperature, evening relative humidity and rainfall. The field efficacy of eco-friendly insecticides and bio products against brinjal shoot and fruit borer was evaluated by spraying thrice during kharif crop season 2019-20. The pooled mean data of shoot infestation was recorded minimum in Chlorantraniliprole (12.48%) followed by Spinosad (14.91%), Emamectin benzoate (14.93%), Neem oil (17.51%), Beauveria bassiana (18.51%), Pongamia oil (19.92%) and Desi cow urine (21.01%) respectively in comparison to (22.87%) counted in untreated control. The observation of pooled mean fruit infestation after three sprays application was recorded minimum in Chlorantraniliprole (9.77%) followed by Spinosad (11.81%), Emamectin benzoate (12.93%), Neem oil (14.71%), Beauveria bassiana (16.21%), Pongamia oil (19.75%) and Desi cow urine (20.75%) respectively in comparison to (24.65%) counted in untreated control. The yields among the treatments were significant. The highest yield was recorded in treatment Chlorantraniliprole (check) (230.71 q/ha) followed by Spinosad (200.53 q/ha), Emamectin benzoate (194.25 q/ha), Neem oil ( 160.69 q/ha), Beauveria bassiana ( 150.90 q/ha), Pongamia oil (115.50 q/ha), Desi Desi cow urine (108.80 q/ha) as compared to control ( 95.21 q/h). When the benefit-cost ratio was worked out, an interesting result was achieved. Chlorantraniprole was the best and most economic treatment because it gives a maximum benefit of (7.64:1) followed by Emamectin benzoate, Spinosad, Neem oil, Beauveria bassiana, Desi cow urine and Pongamia oil with benefit-cost ratio 6.76:1, 5.99:1, 5.66:1, 4.79:1, 3.73:1, 3.44:1 as compared to untreated control (3.14:1). Thus, the present study clearly revealed that instead of chemical pesticides, eco-friendly insecticides and bio products like Spinosad, Emamectin benzoate, Neem oil, Beauveria bassiana, Pongamia oil, Desi Desi cow urine can be suitably incorporated in integrated pest management schedule for BSFB, L. orbonalis as an effective tool, in order to avoid indiscriminate use of chemical pesticides causing pollution in the environment and aiming non-target organisms with increase in market value of harvest due to less pesticides residue.