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Subbulakshmi, S.
- Response of Cotton to Temperature, Rainfall and Sunshine Hours at Kovilpatti, Tamil Nadu, India
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Authors
Affiliations
1 Agricultural Research Station (T.N.A.U.), Kovilpatti (T.N.), IN
1 Agricultural Research Station (T.N.A.U.), Kovilpatti (T.N.), IN
Source
International Journal of Agricultural Sciences, Vol 15, No 1 (2019), Pagination: 120-123Abstract
Three date of sowing with four levels of spacing were tried to know growing degree days (GDD), heliothermal units (HTU) photo thermal units (PTU) requirement of crop and heat use efficiency (HUE) for prediction of phenophases, growth and yield of cotton. Field experiments was conducted during 2010-11 in Rabi season (October - December) at Agricultural Research station, Kovilpatti (Latitude 9.17’N, Longitude 77.88’E and elevation (AMSL) 90 m), Tamil Nadu, India, using cotton (NCS 145). The treatment combinations comprised of three dates of sowing viz., D1- 39th, D2- 41st and D3- 43rd standard weeks (pre monsoon, monsoon and post monsoon sowing, respectively) in main plot with four different spacing of S1- 90 x 60, S2-90 x 45, S3- 75 x 60, S4- 75 x 45 in the sub plot. The highest HUE of 0.815 g m-2 per °C day for cotton kapas yield was recorded by pre monsoon sown crop and GDD directly reflected in cotton kapas yield. The maximum and minimum temperature, sun shine hours and rainfall had positive correlation with yield of the crops. Higher cotton kapas yield was recorded by pre monsoon sown crop due to favourable weather factors.Keywords
Cotton, Temperature, Rainfall, GDD, HTU, HUE.
References
- Arian, A., Ali, J. and Shamus, T. (2001). Effect of planting date on yield and fibre quality of cotton. Indus J. Plant Sci., 1(1): 10 – 12.
- Bhalerao, P.D., Gawande, P.P., Ghatol, P.V and Patil, B.R. (2008). Performance of Bt cotton hybrids for various spacing under rainfed condition. Agric. Sci. Digest, 28 (1):54-56.
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- Response of Black Gram Varieties to Sowing Times under Rain Fed Vertisol of Southern Tamil Nadu
Abstract Views :234 |
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Authors
Affiliations
1 Agricultural Research Station (T.N.A.U.), Kovilpatti (T.N.), IN
1 Agricultural Research Station (T.N.A.U.), Kovilpatti (T.N.), IN
Source
International Journal of Agricultural Sciences, Vol 15, No 1 (2019), Pagination: 190-194Abstract
The field experiments were conducted during 2010-11, 2011-12 and 2012-13 in Rabi season (October - December) at Agricultural Research station, Kovilpatti to identify the optimum time of sowing and best suitable blackgram variety for rainfed vertisol. Experiments were laid out in split-plot design with three replications. The treatment combinations comprised of three dates of sowing viz., 39th, 41st and 43rd standard weeks (pre monsoon, monsoon and post monsoon sowing, respectively) in main plot with four different black gram varieties viz., CO 5, CO 6, Vamban 4 and Vamban 5 in the sub plot. The results revealed that sowing during 39th standard week (pre monsoon-D1) registered increased growth and yield parameters viz., plant height, DMP,LAI, number of pods/plant, number of seeds/pod, pod length, 100 seed weight, which reflected on increased grain yield. Similarly among the varieties tried CO 5 registered higher growth and yield attributes which reflected on increased grain yield which was followed by Vamban 4.Keywords
Black Gram, Dates of Sowing, Genotypes, Growth, Yield.References
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