Adaptive dynamics of earhead bugs in different genotypes of sorghum under abiotic factors
Keywords:Abiotic correlation, earhead bugs, population dynamics, resistance, susceptible, sorghum
Based on preliminary screening, ten sorghum genotypes were selected on the basis of head bugs infestation and grain damage rating by visual observation method and replicated thrice in a plot size of 3 metre row length. The population build-up of sorghum earhead bugs was low with mean of 18.9 bugs/5 panicles in resistant genotypes as compared to susceptible ones (66.20 bugs/panicles) and minimum temperature, relative humidity of morning and evening hours were negatively correlated while, maximum temperature and sunshine hours were positively correlated with head bug population build-up in sorghum crop. It is inferred that sorghum earhead bugs did not preferred some sorghum varieties with certain morphological as well as biochemical plant characters which in the end reflects in the population build-up of sorghum earhead bugs.
Doggett H, Starks KJ & Eberhart SA. 1970. Breeding for resistance to the sorghum shootfly. Crop Science, 10: 528-531.
FAO 2021: http//www.fao.org/faostat/en/#data (accessed on 19th of July, 2021).
Haldhar SM, Bhargava R, Choudhary BR, Pal G & Kumar S. 2013. Allelochemical resistance traits of muskmelon (Cucumis melo L.) against fruit fly (Bactrocera cucurbitae (Coquillett)) in hot arid region of India. Phytoparasitica, 41(4): 473–481.
Haldhar SM, Bhargava R, Singh RS, Samadia DK, Jat GC & Singh D. 2019. Do bottom-up effects (resistance) of different accessions of Indian cherry (Cordia myxa L.) help against tingid bug [Dictyla cheriani (Drake)] attack? Journal of Agriculture and Ecology, 8: 84-103.
Hall DG & Teetes GL. 1982a. Damage to grain sorghum by Southern Green Stink bug, Conchuela, and leaf footed bug. Journal of Economic Entomology, 75: 620-625.
Hall DG & Teetes GL. 1982b. Yield loss density relationships of four species of panicle feeding bugs in sorghum. Environmental Entomology, 11 (3): 738-741.
Hiremath IG & Thontadarya TS. 1984. Seasonal incidence of the sorghum earhead bug, Calocoris angustatus Lethierry (Hemiptera: Miridae). Insect Sci. Appl., 56: 469-474.
ICRISAT (International Crops Reserarch Institute for the Semi-Arid Tropics). 1985. Proceedings of the International Sorghum Entomology Workshop, 15-21 July 1984, Texas A&M University, College Station, TX, USA. Patancheru, A.P. 502 324, India: ICRISAT.
Malgwi AM, Ajayi O, Ogunlana MO, Onu I, Dike MC (ed.), Ajayi O, Okunade SO, Okoronkwo NO & Abba AA. 2000. Evaluation of head bugs population and damage on sorghum at different sowing dates at Samaru, Zaria. Entomology in nation building: - the Nigerian Experience. The Proceedings of ESN 30th Annual Conference held at Kano, Nig 2000, 107-112.
Marley PS & Malgwi AM. 1999: Influence of head bugs (Eurystylus sp.) on sorghum grain mould in the Nigerian savanna. J. Agric. Sci., Cambridge. 132: 71-75.
Prabhakar B, Rao PK & Rao BHK. 1986. Studies on the seasonal prevalence of certain Hemiptera occurring on sorghum. Entomon, 11 (2): 95-99.
Puttarudriah M. 1947. Field control of the earhead pests of jola (Andropogon sorghum). Mysore Journal of Agriculture Sciences, 25 (1-2): 48-53.
Raja Sekhar P. 1997. Some observations on incidence of sorghum earhead bug, Calocoris angustatus (Leth.) on sorghum in relation to sowing dates. J. Insect Sci., 10 (1): 78-79.
Ramamurthy R & Gopalan M. 1993. Influence of weather factors on sorghum earhead bug. Madras Agric. J., 80 (8): 424-429.
Rao DVS & Azam KM. 1987. Economical control of sorghum earhead bug. Indian Journal of Plant Protection, 15 (2): 194-197.
Satyagopal K, Sushil SN, Jeyakumar P, Shankar G, Sharma OP, Sain SK, Boina DR, Lavanya N, Sunanda BS, Ram Asre, Murali R, Sanjay Arya, Subhash Kumar, Yadava HS, Lingaraju S, Ganguli RN, Thakur MP, Kotasthane AS, Mishra JS, Koshta VK, Awasthi AK, Ravindra H, Shivanna BK, Gangopadhyay S, Bhagwat VR, Das IK, Kajjidoni ST, Patel BR, Ghetiya LV, Sathyanarayana N and Latha S. 2014. AESA based IPM package for Sorghum. pp 44.
Seshu, Reddy KV & Davies JC. 1979. Pests of sorghum and pearl millet, and their parasites and predators, recorded at ICRISAT Center, India, upto August, 1979. Cereal Entomology Progress Report No.2. Patancheru, A.P. 502324, India: International Crop Research Institute for the Semi-Arid Tropics. 23 pp.
Sharma HC & Lopez VF. 1989. Assessment of avoidable losses and economic injury levels for the sorghum head bug, Calocoris angustatus Leth. (Hemiptera: Miridae) in India. Crop Protection, 8 (6): 429-435.
Sharma HC & Lopez VF. 1990. Biology and population dynamics of sorghum head bugs (Hemiptera: Miridae). Crop Prot., 9 (3): 164-173.
Sharma HC, Nwanze KF & Subramanian V. 1995. Mechanisms of resistance to insects in sorghum and their usefulness in Crop Improvement. In Host Pl. Resistance to Insects in Sorghum. A training course (24 Oct. – 3 Nov., 1995) ICRISAT Asia Centre, Patancheru-502324, Andhra Pradesh, India.
Sharma HC, Satyanarayana MV, Singh SD & Stenhouse JW. 2000. Inheritance of resistance to head bugs and its interaction with grain molds in Sorghum bicolor. Euphytica, 112(2): 167-173.
Sharma HC, Taneja SL, Leuschner K & Nwanze KF. 1992. Techniques to screen sorghum for resistance to insect-pests. ICRISAT information bulletin No.32. International crops research institute for the semi-arid tropics, Patancheru, A.P. 502 324, India, pp.48.
Sheoran OP, Tonk DS, Kaushik LS, Hasija RC & Pannu RS. 1998. Statistical software package for agricultural research workers. Recent advances in information theory, statistics and computer application by Hooda, D.S. and Hasija, R.C., Department of Mathematics and Statistics, CCS HAU, Hisar. 139-143.
Teetes GL, Seshu Reddy KV, Leuschner K & House LR. 1983. Sorghum Insect Identification Handbook. ICRISAT Information Bulletin No.12. International Crops Research Institute for the Semi-Arid Tropics, Patancheru, A.P. 502324, India.
Wood EAJ & Starks KJ. 1972. Effect of temperature and host plant interaction on the biology of three biotypes of the greenbug. Environmental Entomology, 1: 230-234.