S G Hanchinal
@uasraichur.edu.in
Asst. Professor, Entomology
UAS, Raichur
EDUCATION
Ph.D in Agricultural entomology
RESEARCH INTERESTS
Plant protection,Sterile insect technique, Mating disruption technology, Integrated pest management, Biocontrol, Natural farming
Scopus Publications
Scholar Citations
Scholar h-index
Scholar i10-index
Scopus Publications
K. Veena, Arunkumar Hosamani, A. Prabhuraj, Shivanand G. Hanchinal, Mallikarjun Kenganal, and Sharanabasappa S. Deshmukh
Springer Science and Business Media LLC
B.R. Chethan, V. Rachappa, S.G. Hanchinal, Harischandra R. Naik, and S.R. Doddagoudar
Agricultural Research Communication Center
Background: Pigeonpea is the major pulse crop of India. In reproductive stage pigeonpea is exposed to biotic pests causing damage to flowers, pods and grains. Pod bugs, Clavigralla gibbosa Spinola are one of the major biotic constraints in reducing productivity of pigeonpea. Nymphs and adults suck the sap from pods and cause loss of seed yield. Chemical residues will remain in the grains affecting health of the consumer. Eco-friendly molecules are best alternatives to manage pod bugs. Methods: Efficacy test of biopesticides viz., Lecanicillium lecanii, Beauveria bassiana, Metarhizium anisopliae, NSKE 5%, Neemazol 1% and Sasyarakshak against C. gibbosa was conducted in pigeonpea during Kharif 2017-18 and 2018-19 at Agricultural Research Station, Kalaburagi, Karnataka, India under field conditions with seven treatments including control in three replications. Two sprays were taken at tender pod stage and population was recorded. Pod damage and grain damage was assessed at harvest. Result: NSKE 5% was superior in reducing pod bug population, pod damage and grain damage followed by L. lecanii and neemazol 1%. M. anisopliae was found to be ineffective in reducing the population, pod damage and grain damage. The average grain yield of 1229.10 kg/ha was highest in NSKE 5% followed by L. lecanii (1223.48 kg/ha) and neemazol 1% (1199.53 kg/ha). The B:C was 2.45 in NSKE 5% and 2.43 in L. lecanii were higher than other treatments. Therefore, these two biopesticides can be used for effective management of pod bug in pigeonpea.
Revanasiddayya Revanasiddayya, Jayaprakash Mohan Nidagundi, Bashasab Fakrudin, Prakash Kuchanur, Lingappa Neelagiri Yogeesh, Shivanand Hanchinal, Talagunda Chandrashekar Suma, Gururaj Sunkad, Bharamappanavara Muralidhara, Doddamani Maheshkumar,et al.
Czech Academy of Agricultural Sciences
RAKHESH S, SHIVANAND G HANCHINAL, BHEEMANNA M, HOSAMANI A K., NIDAGUNDI J M., and PRABHULINGA TENGURI
Association of Agrometeorologists
The pink bollworm incidence and adult male moth trap catches were monitored throughout the cropping period for four years from 2017-2021 on Bt cotton (KCH-14K59) at University of Agricultural Sciences, Raichur. The pink bollworm male moth activity (95 moths/trap) was more during the month of December month (49th SMW) with the highest larval incidence (25.67 larvae/ 20 bolls) on green bolls during the month of February (6th - 9th SMW). The correlation matrix indicating relationship between the weekly mean moth catches, larval incidence and meteorological variables from 2017 to 2021 exerted negative association with mean of maximum and minimum temperature, rainfall, morning and afternoon relative humidity. However, the influence of all these whether parameters was found to be highly significant. When the data was subjected to Multi Linear Regression analysis, the results revealed that 78.70 per cent of mean pheromone trap catches (R2 = 0.787) and 92 per cent of mean larval incidence (R2 = 0.92) was negatively influenced by minimum temperature.
V.S. Nagrare, Babasaheb.B. Fand, Rishi Kumar, V. Chinna Babu Naik, S.P. Gawande, S.S. Patil, K. Rameash, D.T. Nagrale, S.M. Wasnik, P.W. Nemade,et al.
Elsevier BV
G. Sham Supreeth, S.G. Hanchinal, M. Bheemanna, Arunkumar Hosamani, Rachappa V. Haveri, and J.M. Nidagundi
Brill
Abstract The fall armyworm, Spodoptera frugiperda (JE Smith, 1797) is a notorious invasive pest causing significant economic damage to various crops. The extensive damage caused by this pest has created havoc in India and has become a nightmare for farmers. The management steps taken for controlling the pest have become futile. There are several instances depicting the failure of conventional management tactics, viz resistance against insecticides and transgenic maize lines paving the way for exploiting newer paradigms of pest management. Hence, a novel approach through the use of gamma irradiation against the pest was attempted. A dose-response trial encompassing doses from 50 to 200 Gy was employed to study the adverse effects of gamma irradiation on the biology of fall armyworm. The irradiated insects were crossed with their counterpart and the developmental profile of progeny was analysed. The obtained results were quite promising and showed a significant effect on the biology of the pest with progression of the irradiation dose. When females were exposed to irradiation and crossed with fertile counterparts, fecundity decreased with an increase in irradiation dose. A considerable increase in the egg, larval and pupal period was observed at 100 and 150 Gy. This decreased fecundity reduces the pest’s build-up in the field and the prolonged developmental period make the pest more prone to biotic and abiotic annihilation factors. Hence, the above-mentioned strategy has plausible applications in the near future and this tool can better be fitted into area-wide integrated pest management programmes.
H. N. VARNITHA, S. G. HANCHINAL, P. R. SHASHANK, A. PRABHURAJ, M. BHEEMANNA, and J. M. NIDAGUNDI
Magnolia Press
A new species, Pexicopia tungabhadrai sp. nov. (Lepidoptera: Gelechiidae), feeding on Abutilon indicum is described from Karnataka, India. Also, this is the first report of the genus Pexicopia Common, 1958 from India. Images of adult moths, male and female genitalia and immature stages are provided.
Sreenivas A G, Markandeya G, Harischandra Naik R, Usha R, Hanchinal S.G., and Badariprasad P.R.
Elsevier BV
Abstract Indian cotton farmers have reaped the benefits of Bt cotton cultivation since commercialization (March 2002) until 2013–14. From 2014 onwards, the pink bollworm (PBW) outbreak in the entire cotton-growing regions of the country was witnessed. The pest aggravated and became more problematic, not being controlled with the present management practices due to resistance to cry-toxins and insecticides. However, a non-chemical approach modifying the behavior of PBW was exploited in this study and evaluated its effectiveness in comparison with existing management strategies. An area-wide management trial with mating disruption technology was carried out using specialized pheromone and lure application technology for pink bollworm (SPLAT-PBW). Application of 500, 750, and 1250 g/acre of the lure during 2017–18 in 154 acres and 206 acres during 2018–19 in Raichur district of Karnataka, India, recorded significant control of PBW. The results revealed that SPLAT-PBW applied at 500 g/acre was found to be optimum, as minimum rosette flower (8.23%), green boll damage (7.36%), locule damage (8.41%), and higher yield (33.59 q/ha) recorded as compared to farmers’ practice which yielded 22.33 q/ha even after 5–6 rounds of insecticide spray. At the end of the fifth week, 40.36% of the active ingredient of pheromone was present in the field sample. It indicated a slow-release mechanism of pheromone from the SPLAT-PBW lures. Non-chemical approaches of insect pest management in cotton significantly benefit in reducing the load of chemical pesticides and cost of protection. This technology is an alternate option to chemical pesticides to curb the menace of the PBW due to management difficulties with the present pest control tools.
R.K. Seth, B.V. Patil, Mahtab Zarin, Zubeda Khan, S.G. Hanchinal, Rachappa V. Haveri, Akshatha Gopalkrishna, and Ranjana Seth
Elsevier BV
Abstract The effects of gamma radiation were observed on the metamorphosis and reproduction as key target features to be intercepted for disinfestation of the three major pest bruchid species, Callosobruchus maculatus (Fabricius), C. analis (Fabricius) and C. chinensis (Linnaeus) irradiated in the various ontogenic stages. The present study was aimed to determine an efficacious generic dose of phytosanitary irradiation (PI) for bruchid disinfestation in pulses. Callosobruchus chinensis was the most radio-resistant species among the present tested species, and male bruchids were more radio-resistant than the females in this species complex. In this complex of tested bruchid species, the gamma dose required to cause 100% metamorphic disruption in the most radio-resistant pre-imaginal stage (pharate adult) was 20–46% higher than the dose required to induce complete sterility in the most radio-resistant imaginal stage (4–5 day old). The effective dose inducing 99.9% impact (ED99.9) was 105 Gy for sterility induction but ~181 Gy to induce metamorphic disruption in the most radio-resistant pre-imaginal pharate adult in C. chinensis, whereas the most radio-resistant imaginal stage (4–5 day old adult) of this species required 124 Gy for complete sterilization. Based on these results, 160–200 Gy as phytosanitary irradiation dose range was evaluated on a semi-large scale testing on the pigeonpea pulse seeds having mixed infestation of Callosobruchus species complex, which indicated that 200 Gy might be considered as a feasible generic dose of phytosanitary irradiation for bruchid disinfestation in pulses.
Rakesh K. Seth, Basavaraj V. Patil, Zubeda Khan, Mahtab Zarin, Shivanand G. Hanchinal, Rachappa V. Haveri, and Akshatha Gopalkrishna
Informa UK Limited
Abstract Purpose: The impact of gamma radiation on the reproductive biology of the spotted pod borer, Maruca vitrata (Fabr.) (Lepidoptera: Crambidae) was ascertained to explore the potential of the radio-genetic ‘Inherited (F1) Sterility’ technique (modified Sterile Insect technique) to control this serious pigeonpea pest in India. Materials and methods: Radio-biological investigations involved dose–response studies, at a range of 100–250 Gy, with respect to radiation induced adverse effects on reproductive behavior in substerilized parent (P1) moths, inheritance of sterility and associated metamorphic disruption in F1 progeny. The reproductive competence of P1 male moths and their F1 progeny was evaluated by ascertaining the survival, mating success, sperm transfer and amphimixis of gametes from irradiated male parents and their F1 progeny. Daily ovipositional and egg fertility profile were evaluated as crucial parameters for simulation modeling for this radio-genetic technique. Results: Radiation-induced check in insemination rate and sterility in P1 and F1 generation had a positive correlation with gamma dose. The metamorphic adverse effects in F1 progeny of substerilized P1 males were influenced by P1 irradiation. A higher dose of 200 Gy that resulted in 21.1% fertility in parent cross (P1♂x N♀) could form only 14.4% F1 adults that were all malformed. A gamma dose of 150 Gy (administered to P1 males) could be considered as a suitable dose for F1 sterility, that induced 57.4% control of reproduction in parent generation, followed by 72–85% control of reproduction in F1 progeny involved in three crosses -F1♂xN♀, N♂xF1♀, F1♂xF1♀. Daily fertility profile of the eggs laid indicated a marked reduction on 4th day onwards during the ovipositional span in P1 and F1 generation. High degree of mating competitiveness value (CV) was noticed for 150 Gy irradiated male P1 moths (0.78–0.93), and their F1 male progeny (0.70–0.89), released in different sex ratios in the field cages having untreated moths. Reduced relative damage to the pigeon pea plants by the released F1 progeny in the field cages was observed in comparison to control. Conclusion: The present study indicated the potential use of a dose of 150 Gy to apply the ‘F1 sterility’ technique for parabiological suppression of the pigeon pea pod borer. The present findings and reproductive performance of the irradiated moths in F2 generation along with other compatible biorational pest control tactics (that are in progress), might help in formulating an effective integrated pest management module, including the F1 sterility technique as an integral component.
S. Deepak, A. G. Sreenivas, Basavaraj Kalmath, S. G. Hanchinal, K. T. Vendan, and S. S. Patil
ANSF Publications
Entomopathogenic fungi viz. Metarizhium anisoplae and Beauveria bassiana are well characterized in respect to pathogenicity to several insects and have been used for biological control of agriculture pests worldwide. Despite their potential, several factors like low resistance to elevated temperature have hindered widespread adoption of fungi as part of biological control regimes. In this study, five isolates of B. bassiana (Bb 01, Bb 02, Bb 03, Bb 04 and Bb 05) and two isolates of M. anisoplae (Ma 01 and Ma 02) were evaluated for thermotolerance capacity and bioefficacy against third instar of Spodoptera litura. Among the isolates studied, Bb 04 recorded the higher temperature tolerance up to 34oC with mean spore germination of 35.00 percent and mean dry mycelial weight of 443.38 mg. Further, in the bioassay studies, Bb 04 caused significantly (@ P<0.01%) higher percent mortality of S. litura larva at 1×108 spores ml-1 on fifth day (80.00 %) with LT50 value of 4.08 days and LC50 value of 2.07×104 conidia ml-1 at five days. Investigation results indicated that BB 04 is a suitable EPF isolate for management of S. litura where higher temperature prevails.
Rachappa V., S. G. Hanchinal, Chandra Shekhara, Sweta Surpur, B. V. Patil, R. K. Seth, and Suhas Yelshetty
Agricultural Research Communication Center
The investigation on refinement and evaluation of artificial diet for M. vitrata, were carried out during 2014 and 2015 under walk in plant growth chamber established at ARS, Gulbarga, Karnataka, India. Comparison of developmental parameters of three successive generations of M. vitrata reared on different diets revealed that, maximum survival of egg, larva and pupa was 78.4 ± 3.1, 67.6±5.5 and 73.0±5.0 respectively in modified D-OOD diet and was superior over rest of the diets (D-OOD, D-New and D-OO) while it was on par with natural host plant. Maximum fecundity of 62.34±4.1 eggs/female was observed in refined D-OOD diet was on par with pigeonpea host plant and superior over other diets. Biology studies of Maruca on refined artificial diet in comparison with natural host plant pigonpea were revealed that, incubation period (2.6 ± 0.46 and 2.85 ± 0.40 days), total larval duration (14.28± 1.02 and 14.78±1.52 days), pupal period (9.41±0.70 days and 10.33±1.08 days) did not vary significantly between modified diet and natural host. Fecundity in refined artificial diet was 66.00 ± 4.00 and it was 65.99± 7.02 eggs on natural host plant. Per cent egg hatching was almost same in both the cases.
Ramesh A. Kulkarni, A. Prabhuraj, J. Ashoka, S. G. Hanchinal, and Sharanagouda Hiregoudar
Current Science Association
Cell-free supernatant of Photorhabdus luminiscens was converted to nanoparticles (NPs) using a spray dryer fitted with ultrasonic nozzle. NPs were characterized by both scanning electron microscopy and zeta size analyser, and found to have average particle diameter of 89 nm. While converting to NPs, gum arabica @ 3% was used to eliminate hygroscopic property. Nanoparticulated supernatant exhibited superior pesticidal property against serious sucking pests of cotton, viz. Tetranychus macfarlanei and Aphis gossypii . On mites, NPs of P. luminiscens recorded lower median lethal concentration (LC 50 : 0.0001 ppm) compared to normal form (8.36 x 10 2 ppm) within 12 h of exposure. Similarly, on aphids, lower LC 50 (LC 50 : 0.0027 ppm) was recorded by NPs compared to normal form (LC 50 : 2.12 x 10 3 ppm). High mortality coupled with quick action emphasizes the potential of nanotechnology in enhancing the pathogenicity of a microbial pesticide.