PERFORMANCE OF GROUNDNUT (COGN 4) CROP INFLUENCE ON DATES OF SOWING AND NITROGEN LEVELS, GROWTH AND YIELD OF IRRIGATED CONDITION UNDER CHANGING CLIMATE IN SOUTHERN AGRO-CLIMATIC ZONES OF TAMIL NADU

M. VIJAYAKUMAR¹*, V. GEETHALAKSHMI^2
1Department of Agronomy, Agricultural College and Research Institute, Madurai, 625 104, Tamil Nadu Agricultural University, Coimbatore, 641003, India
²Department of Agronomy, Agricultural College and Research Institute, Madurai, 625 104, Tamil Nadu Agricultural University, Coimbatore, 641003, India
* Corresponding Author : vijayakumarphd020@gmail.com

Received : 09-11-2018     Accepted : 27-11-2018     Published : 30-11-2018
Volume : 10     Issue : 22       Pages : 7518 - 7521
Int J Agr Sci 10.22 (2018):7518-7521

Keywords : Groundnut, Climate change, Sowing date, Nitrogen levels, Productivity
Conflict of Interest : None declared
Acknowledgements/Funding : Authors are thankful to Agricultural College and Research Institute, Madurai, 625 104, Tamil Nadu Agricultural University, Coimbatore, 641003, India
Author Contribution : All authors equally contributed

Study was conducted at the Agricultural College and Research Institute, Madurai to find out the influence on dates of sowing and nitrogen levels on the growth and yield of groundnut cultivars COGn 4 during Rabi crop season 2016. Twelve treatment combinations comprising off our dates of sowing (D1:9th February, D2:19th February, D3: 29th February, and 9th D4:March) and three N levels (Normal dose, 25% more, 25% less) was executed in factorial randomized block design with three replications. The growth parameters like plant height, dry matter production and leaf area index and yield of parameters like pod yield and haulm yield were significantly influenced by the dates of sowing. The highest pod yield and haulm yield were obtained from the plants sown during February 9th, followed by February 19th sowing. The variety COGn 4 recorded the highest pod yield and haulm yield. Delay in sowing reduced the crop duration and subsequently reduced the crop yield. Results of N levels highest influenced were significantly higher growth and yield parameters were influenced by N3: Higher than normal and followed by N1: Normal and lower on nitrogen levels was observed in N2: Lesser than normal. Interaction between dates of sowing and nitrogen levels influenced highest growth and yield parameters significantly were D1: 9th February+ N3: Higher than normal followed by D1:9th February+ N1:Normal and lowest interaction was observed by D1:9th February+N2: Lesser than normal.

1. Prasad P.V.V., Craufurd P.Q., Summerfield R.J., Wheeler T.R. (2000) Journal of Experimental Botany 51, 777-784.
2. Indiastat – 2016
3. Kataria G.K., Pandya R.B. (1995) Pl. Physiol. Biochem., 22, 143-46. Reddy, V.C., Reddy, N.S. (2000) Curr. Res., 29: 7-8, 107-09
4. Olsen S.R., Cole C.V., Watanabe F.F. and Bean A.L. (1954) Agric. Cir., 939.
5. Reddy V.C., Suresh K.T. (2000) Crop Res., 20, 29-34.
6. Subbiah B.V. and Asija C.C. (1956) Curr. Sci., 25, 259-260.
7. Stanford S. and English L. (1949) Walkley, A. and I.A. Black. 1934. Soil Sci., 37, 29-38. Journal of Agricultural Science, Cambridge 135, 371-378.
8. Sahu D.D. (2004) Int. Arachis News Letter 24, 39-42.
9. Shwetha A.G., Ashoka Sushila Nadagoud J. and Kuchnoor P.H. (2017) Intl. Journal of Pure Applied Bioscience, 5 (6), 985-989.
10. Walkley A. and Black I.A. (1934) Soil Sci., 37, 29-38.