Effect of gypsum and moisture stress on growth and pod-fill of groundnut (Arachis hypogaea L.)

Balasubramanian, V. and Yayock, J.Y. (1981) Effect of gypsum and moisture stress on growth and pod-fill of groundnut (Arachis hypogaea L.). Plant and Soil , 62 (2). pp. 209-219.

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A pot study was carried out in the screenhouse at Samaru, Nigeria, to examine the effects of moisture stress and gypsum on groundnut pod development and yield. The use of gypsum had no significant effect either on vegetative growth or on the yield of Spanish 205, but increased the pod and kernel yields of June-sown Samaru 38 variety. Applying moisture stress at 9-13 weeks after sowing to coincide with the period of peg and pod development, lowered the uptake of nitrogen and increased the proportion of unfilled pods, thus drastically reducing yield. In one trial, the variety Samaru 38 failed to yield any pods when plants were subjected to moisture stress at the peg and pod development phase. By comparison, the occurrence of moisture deficit earlier in the season, at 6-10 weeks after sowing and coinciding with the period of peak flowering, was less detrimental to pod fill and yield. It was concluded that the application of gypsum alone without first correcting moisture deficit was unlikely to alleviate problems of groundnut peg development and pod fill.ADDITIONAL ABSTRACT:In pot trials, 46 kg Ca/ha as gypsum had no significant effect on vegetative growth or yield of groundnut cv. Spanish 205 but increased pod and seed yields of cv. Samaru 38 sown in June. Moisture stress during peg and pod development at 9-13 wk after sowing lowered the uptake of N, increased the proportion of unfilled pods and drastically reduced the yield; in 1 trial, Samaru 38 yielded no pods. Moisture stress during peak flowering at 6-10 wk after sowing was less detrimental to pod filling and yield

Item Type: Article
Additional Information: SNNigam collections
Uncontrolled Keywords: Arachis hypogaea, Crop Environment, Groundnut pod fill, Gypsum, Moisture stress, Tropical soils
Author Affiliation: Institute for Agricultural Research, Ahmadu Bello University, PMB 1044, Zaria, Nigeria
Subjects: Soil Science and Microbiology
Statistics and Experimentation > Experimentation
Environmental Science > Ecology
Divisions: Groundnut
Depositing User: Mr T L Gautham
Date Deposited: 27 Sep 2013 04:54
Last Modified: 27 Sep 2013 04:54
Official URL: http://dx.doi.org/10.1007/BF02374085
URI: http://eprints.icrisat.ac.in/id/eprint/11850

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