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Kumhar, B. L.
- Weed Management Strategies in Bt Cotton Under Humid Southern Plain Zone of Rajasthan
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Authors
Affiliations
1 AICRP on Irrigation Water Management, Agricultural Research Station, Agriculture University, Kota (Rajasthan), IN
1 AICRP on Irrigation Water Management, Agricultural Research Station, Agriculture University, Kota (Rajasthan), IN
Source
International Journal of Plant Sciences, Vol 12, No 2 (2017), Pagination: 243-248Abstract
A field experiment was conducted during two consecutive years of Kharif 2012 and 2013 at Agricultural Research Station, Banswara to find out suitable weed management strategies for Bt cotton. The experiment was laid-out in Randomized Block Design with three replications having nine treatments. Results revealed that, the application of pendimethalin 30% EC @ 0.75 kg a.i./ha PE fb quizalofop-P-ethyl 50 g a.i./ha at 20-30 DAS+one hoeing gave significantly higher bolls plant-1 (36.30), boll weight (4.22 g), seed cotton yield (2275 kg ha-1), net return (Rs.55581/- ha-1) and B:C (2.70) over rest of treatments, but it was found at par with weed free check and application of pyrithiobac sodium @ 62.5 g a.i./ha fb quizalofop-P-ethyl 50 g a.i./ha at 20-30 DAS+one hoeing bolls plant-1 (34.84), boll weight (4.19 g), seed cotton yield (2251 kg ha-1), net return (Rs.54669/- ha-1) and B:C (2.64). The maximum weed control efficiency (60.75%), lowest weed population (12.39 m-2) and weed dry matter accumulation (14.63 g m-2) at 60 DAS were observed under application of pendimethalin 30% EC @ 0.75 kg a.i./ha PE fb quizalofop-P-ethyl 50 g a.i./ha at 20-30 DAS+one hoeing over rest of treatments. However, it was found at par with weed free check and application of pyrithiobac sodium @ 62.5 g a.i./ha fb quizalofop-P-ethyl 50 g a.i./ha at 20-30 DAS+one hoeing.Keywords
Cotton, Pendimathlin, Pyrithiobac Sodium, Weed Control Efficiency.
References
- Ayyadurai, P. and Poonguzhalan, R. (2011). Critical period of crop weed competition in zero-till cotton. Indian J. Weed Sci., 43 : 228-230.
- Chauhan, B. and Yadav, A. (2013). Weed management approaches for dry-seeded rice in India: a review. Indian J. Weed Sci., 45(1): 1-6.
- Choudhary, B. and Gaur, K. (2015). Biotech cotton in India, 2002 to 2014. ISAAA Series of Biotech Crop Profiles. ISAAA:Ithaca, NY.
- Deshpande, R.M., Pawar, W.S., Mankar, P.S., Bobde, P.N. and Chimote, A.N. (2006). Integrated weed management in rainfed cotton. Indian J. Agron., 51(1): 22-27.
- Hiremath, R., Yadahalli, G.S., Chittapur, B.M., Siddapur, A.D., Yadahalli, V.G., Koppalkar, B.R.G. (2013). Efficacy of chemical weed management in Bt cotton (Gossypium hirsutum L.). Acta Biologica India, 2(2) : 425-429.
- Jain, S.C., Iyer, B.G., Jain, H.C. and Jain, N.K. (1981).Weed management and nutrient losses in upland cotton under different ecosystems of Madhya Pradesh, pp. 131-135. In: Proceedings of 8th Asian-Pacific Weed Science Society.
- Khan, N. and Khan, S. (2003). Integrated weed management in upland cotton. Pakistan J. Weed Sci. Res., 9 (3-4): 185-192.
- Prabhu, G., Halepyati, A.S., Pujari, B.T. and Desai, B.K. (2012). Weed management in Bt cotton (Gossypium hirsutum L.) under irrigation. Karnataka J. Agric. Sci., 25 (2):183-186.
- Rajendra, T.P. and Jain, K.C. (2004). Achievements in cotton research in the All India Coordinated Cotton Improvement Project. CICR Regional Station, Coimbatore, T.N. (INDIA).
- Sharma, R. (2008). Integrated weed management in field crops. Crop Care, 35 : 41-46.
- Srinivasan, G. and Venkatesan, K. (2002). Evaluation of postemergence application of glyphosate in cotton (Gossypium hirsutum L.). Madras Agric. J., 89 (1-3): 145-147.
- Evaluation of Promising Pre-Release Inter Specific Cotton Hybrids
Abstract Views :222 |
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Authors
Affiliations
1 Agricultural Research Station (A.U.), Ummedgang Farm, Kota (Rajasthan), IN
2 Krishi Vigyan Kendra, Bhilwara (Rajasthan), IN
3 Jawaharlal Nehru Krishi Vishwavidyalaya, Jabalpur (M.P.), IN
1 Agricultural Research Station (A.U.), Ummedgang Farm, Kota (Rajasthan), IN
2 Krishi Vigyan Kendra, Bhilwara (Rajasthan), IN
3 Jawaharlal Nehru Krishi Vishwavidyalaya, Jabalpur (M.P.), IN
Source
International Journal of Plant Sciences, Vol 13, No 1 (2018), Pagination: 192-195Abstract
Field experiment was conducted at Agricultural Research Station, Borwat Farm, Banswara during Kharif-2012 to find out the optimum plant geometry and fertility levels for inter specific cotton hybrids. Sowing of RAHB-189 cotton hybrid gave significantly higher seed cotton yield (1798 kg ha-1) over DCH-32. The maximum seed cotton yield (1976 kg ha-1) was observed under plant geometry of 90 x 60 cm than closer plant geometry of 90 x 45 cm and wider plant spacing 90 x 90 cm. Though, yield attributing parameters such as bolls plant-1 and boll weight were statically improved in wider as compared to closer spacing it could be increase the seed cotton yield under sowing at 90 x 60 cm plant spacing. Among fertility levels, similar seed cotton yield was recorded with the application of 100 % RDF (1983 kg ha-1) and 125 % RDF (2018 kg ha-1) but both were significantly better than that of 75 % RDF and plant geometry 90 x 60 cm seemed to be ideal for inter specific hybrid cotton for realizing higher productivity under the specific agro climatic zone IV b.Keywords
Inter Specific Cotton, Plant Geometry, Seed Cotton Yield, Fertility Levels.References
- Bastia, D.K. (2000). Response of cotton hybrids Savita to spacing and NPK treatments under rainfed condition of Orissa. Indian J. Agric. Sci., 70(8): 541-542.
- Blaise, D. and Prasad, R. (2005). Integrated plant nutrient supply: An approach to sustained cotton production. Indian J. Fert., 1 : 37–46.
- Buttar, G.S. and Singh, Paramjit (2006). Performance of Bt cotton hybrids at different plant populations in South Western region of Punjab. J. Cotton Res. Dev., 20(1) : 97-98.
- Narayana, E., Hema, K., Srinivasulu, K., Prasad, N.V. and Rao, N.H.P. (2007). Agronomic evaluation of G. hirsutum hybrids for varied spacings and nitrogen levels in vertisols under rainfed condition. J. Cotton Res. Dev., 20 (1): 148-150.
- Rekha, M. Sree, Dhurua, S. and Rao, Nageswara, G. (2008). Response of desi cotton (G. arboreum) to different plant densities and nitrogen levels under rainfed conditions. J. Cotton Res. Dev., 22 : 38-41.
- Sankarnarayanan, K.P., Nalayini and Praharaj, C.S. (2004). Agronomic requirements of Bt cotton hybrid in relation to plant density and fertilizer requirement. Intern. Symp. On Strategies for sustainable cotton production – A global vision, 2. Crop production, 23-25 November, 2004, UAS, Dharwad, 248 pp.
- Thokale, J.G., Raut, R.S. and Mehtre, S.S. (2004). Effect of fertilizers and spacings on yield parameters of interspecific hybrid Phule-492 under summer irrigated conditions. J. Cotton Res. Dev., 19(1):167-168.