GROWTH STAGES OF PEANUT (<I>ARACHIS HYPOGAEA</I>)
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Abstract
A study on growth stages of peanut was conducted at Mae Hea Research and Training Centre, Faculty of Agriculture, Chiang Mai University, during October 1987-February 1988. Tainan 9 and CES 101 cultivars were planted October 16, 1987 on a well Prepared seed bed. Seeds were planted at 12.5 cm. between plants and 50 cm. between rows. The seedlings were thinned immediately after emergence to two plants per hill. The plant were dialy observed during the vegetative stages and every 3 days during the reproductive stages.
The investigation based on visual observation. The V stage was determined by counting the number of developed nodes on the main stem. The node counted when the tetrafoliolate leaf sufficiently expanded and flat in appearance. The R stages proposed are R1 (beginning bloom), R2 (beginning peg), R3 (beginning pod), R4 (full pod), R5 (beginning seed), R6 (full seed), R7 (beginning maturity) and R8 charvest maturity).
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References
Fehr, W.R., Caviness, C.R .; Burmood, D.T .; and Pennington, J.S. (1971). Stage of development descriptions for soybeans, Glycine max (L) Merill. Crop Sci. 11: 929-931.
Hanway, J.J. (1963). Growth stages of corn (Zea mays L.) Agron. J. 55: 487-492.
Shaw, R.H. and Laing, D.R. (1966). Moisture stress and crop response. In Plant Environment and Efficient water Use, ed. W.H. Pierre et al. American Society of Agronomy, Madison.
Vanderlip, R.L. and Reeves, H.E. (1972). Growth stages of Sorghum (Sorghum bicolor (L) Moench.) Agron. J. 64: 13-16.
Waldren, R.P. and Flowerday, A.D. (1979). Growth stages and distribution of dry matter, N.P. and K in winter wheat Agron.J. 71: 391-397.
