b. sivakumar*, m. srinivasa reddy, p. kavitha and s. tirumala reddy
Department of Agronomy, Agricultural College, Mahanandi,
ANGRAU, Hyderabad-500030 (A.P.), India
Received-02.09.2018, Revised-19.09.2018
Abstract: A field experiment was conducted during kharif season, 2014 to study the influence of different sowing dates and plant densities on growth parameters of soybean. It was comprised of nine treatments with three sowing dates (June 28, July 14 and July 29) as main plot treatments and three row spacing of soybean (30 cm x 10 cm, 45 cm x 10 cm and 60 cm x10 cm) as sub plot treatments and replicated three times. Plant height, dry matter production, leaf area index (LAI), and Days to 50 per cent flowering increased with early sowing crop on June 28 than other two delayed sowings July 14 and July 29. July 14 sown crop is on par to June 28 sown crop. Growth parameters of soybean were inconsistent with different row spacings. The highest plant height, dry matter production and leaf area index (LAI) was recorded at a spacing of 30 X 10 cm, more number of days to 50 percent flowering were recorded at spacing of 60 cm x 10 cm.
Keywords: sowing dates, plant densities, soybean, Growth parameters
REFERENCES
Anonymous (2008). Annual report, All India coordinated research project on soybean. Directorate of Soybean Research, Indore.
Arnon (1971). Crop production in dry regions. Background and principles Volume I. Leonard Hill books. London pp: 442-457.
Duraisingh, R. and Gopalaswamy, N. (1991). Effect of plant geometry and levels of nitrogen and phosphorus on the productivity of soybean (Glycine max (L.) Merrill). Indian Journal of Agronomy. 36 (4): 545-548.
Halvankar, G. B., Philips Varghese, J. S. P. and Raut, V. M. (1999). Influence of planting geometry and variety on seed yield and related parameters in soybean (Glycine max (L.) Merrill). Indian Journal of Agronomy. 44 (3): 601-604.
Halvankar, G. B., Raut, V. M., Taware, S. P. and Patil, V.P. (1993). Effect of genotype and plant stand on yield of soybean. Indian Journal of Agricultural Sciences. 63 (11): 712-715.
Hanumantharao, Y., Sudhakar, K., Ramakrishnareddy, T. and Venkateswarlu, B. (1990). Studies on growth and yield of soybean varieties at different dates of sowing. Andhra Agricultural Journal. 37 (4): 401-403.
Hariram, Guriqbalsingh and Aggarwal, Navneet (2010). Effect of time of sowing on the performance of soybean (Glycine max (L.) Merrill) in Punjab. Journal of Research Punjab agric Univ.47(3 & 4): 127-31.
Kang, Y.K., Kim, H.T., Cho, N.K. and Kim, Y.C. (2001). Effect of planting date and plant density on yield and quality of soybean in Jeju. Korean Journal of Crop Science. 46 (1): 95-99.
Malek, M.A., Shafiquzzaman, M., Rahman, M.S., Ismail, M.R. and Mondal, M.M.A. (2012). Standardization of soybean row spacing based on morphophysiological characters. Legume Research 2012; 35: 138-143.
Masum Akond, G., Ragin, Bobby, Richard, Bazzelle and Wilsheana, Clark (2012). Effect of two row spaces on several agronomic traits in soybean (Glycine max (L.) Merr.) Atlas Journal of Plant Biology. 1 (2): 18–23.
Mondal, M.M.A., Puteh, A.B., Malek, M.A. and Ismail, M.R. (2002). Determination of optimum seed rate for mungbean based on morpho-physiological criteria. Legume Research. 35: 126-131.
Ravichandran, V. K. and Ramaswami, C. (1992). Response of soybean to different plant densities. Madras Agricultural Journal. 79 (3): 181-182.
Sahoo, N. C., Mahapatra, P. K., Dixit, R. C. and Uttaray, S. K. (1991). Effect of sowing date on growth, yield and quality of soybean (Glycine max (L). Merrill).Indian Journal of Agricultural Sciences. 61 (9): 665-668.
Shuddhodhan, R. and Jadhao, S. L. (1986). Effect of different dates of sowing on yield of various rabi crops. Thesis Abstract XII (1-4): 31.