Yield Performance of Two Locally Adapted and Two Introductions of Common Cowpea in Response to Amended In-Row-Spaces and Planting Dates

A field experiment was conducted in the Agricultural
Research Station, at El-Ghoraieb, Assiut to study dry seed yield
performance of two locally adapted cultivars (‘Azmerly’ and ‘Cream
7’) and two line introductions (IT81D-1032 and IT82D-812) of
common cowpea (Vigna unguiculata (L.) Walp) grown at three
different within-row spaces (20, 30 and 40 cm) and two planting
dates in the summer (April 15th and 30th) and in the fall season (Aug.
12th and 27th) of two successive seasons. The data showed that total
dry-seed yield produced by plants grown at 20 cm was greater than at
30 cm in all cvs/lines in both years. Increases in 1000-seed weight
were detected in cv ‘Azmerly’ and line IT82D-812 when they were
grown at 30 cm as compared with 20 cm in the summer season.
However, in the fall season such increases were found in all cvs/lines.
Planting at 40 cm produced seeds of greater weight than planting at
30 cm for all cvs/lines in the fall season and also in cv. Cream 7 and
line IT82D-812 in the summer season, while all cvs/lines in the fall
Planting on April 15th in the summer and also planting on Aug. 12th
in the fall had plants which showed increases in 1000-seed weight
and total dry-seed yield. The greatest 1000-seed weight was found in
the line IT81D-1032 in the summer season and in the line IT82D-812
in the fall season. The sum up results revealed that ‘Azmerly’
produced greater dry-seed yield than ‘Cream 7’ and both of them
were superior to the line IT82D-812 and IT81D-1032 in the summer
season. In the fall, however, the line IT82D-812 produced greater
dry-seed yield than the other cultivars/lines.

• Mohamed M. A. Abdalla
• M. F Mohamed
• A. M. A. Rashwan

• Cowpea
• Assiut
• fall
• planting dates
• El-Ghoraieb.

[1] A. S. Abdel-Salam, and N.M. Malash, The response of cowpea (Vigna
sinenses Savi.) to sowing time in the New Valley. Bull. Inst. Desert,
Vol. XVIII: 1968. 157-170.
[2] J. O. Akinola, and J.H. Davis, Effect of sowing date on forage and seed
production of 14 varieties of cowpea (Vigna unguiculata (L.).
Experimental Agriculture, 1978. 14: 177-203, Shika Agric. Res. Sta.,
Zaria, Nigeria. (C.F. Field Crop Abstracts, 83: 977, 1979).
[3] S. N. Bhat, Effect of row spacing and phosphorus levels on the growth
and yield of cowpea (Vigna unguiculata (L.) Walp) genotypes and their
residual effect on the yield of succeeding wheat (Triticum sativum L.).
Mysore Journal of Agricultural Sciences 15: 348-349. 1981. (C.F. Field
Crop Abst. 36: 3774, 1983).
[4] R. A. I. Brathwaite, Bodia bean responses to changes in plant density.
Agronomy Journal 1982.74: 593-596. (C.F. Field Crop Abst. 36: 3773,
1983).
[5] T. K. Bridgit, V.P. Neema and P.P. Joy, Response of cowpea genotypes
to dates of sowing. Agricultural Research Journal of Kerala 1993. 31 (2):
266-268. (C.F. Field Crop Abst. 48 (5): 3493, 1995).
[6] B. A. Clarke, and S.A. Skeete, Response of cowpea (Vigna unguiculata
(L.), cultivar Arauca, to planting density. Mayaguez, Puerto Rico; Puerto
Rico University 1982. 98-103. (C.F. Field Crop Abst. 39: 9583, 1986).
[7] A. M. Damarany, Testing and screening of some cowpea (Vigna
unguiculata (L.) Walp) genotypes under Assiut condition. Assiut J. of
Agric. Sci., 1994. 254: 9-19.
[8] B. R Dhaka, B.L. Poonia and G.L. Keshwa, Studies on growth and yield
of cowpea varieties as affected by sowing time in semi arid areas.
Madras Agricultural Journal 79: 412-41. 1992. (C.F. Field Crop Abst.
47: 3009, 1994). [9] F. O. C. Ezedinma, Some observations on the effect of time of planting
on the cowpea (Vigna unguiculata (L.) Walp) in southern Nigeria. Trop.
Agric. Trin. 43: 83-7. 1966. (C.F. Field Crop Abst. 19: 153, 1967).
[10] M. I. Fzueh, Effect of planting dates on pest infestation, yield and
harvest quality of cowpea (Vigna unguiculata L). Experimental
Agriculture, 18: 331-318. 1982. (C.F. Field Crops Abstracts, 35: 9985,
1982).
[11] S. H Gadel-Hak, M.N.M. Hassan and S.H. Mahmoud, An evaluation
study of twenty four genotypes of cowpea (Vigna unguiculata (L.)
Walp.). Minia J. Agric. Res. & Dev. 10: 257-268, 1988..
[12] K. A. Gomez, and A.A. Gomez, Statistical procedures for Agricultural
Research. John Wiley and Sons. New York, pp. 680.
[13] A. A. Hasan, Fruit vegetables. Arabic House for Publication, Cairo,
Egypt, p 680, 1989.
[14] B. B. Jadhav, S.D. Khalfe and S.P. Birari, Role of environmental factors
in flowering and maturity of cowpea (Vigna unguiculata (Linn) Walp.).
Indian Journal of Plant Physiology 34: 215-221, 1991. (C.F. Field Crop
Abst. 46: 3584, 1993).
[15] A. T. Jallow, and T.U. Ferguson, Effects of planting density and cultivar
on seed yield of cowpea (Vigna unguiculata (L.) Walp) inTrinidad
Tropical, Agriculture, UK. 62(2), 121-124. 1985. (C.F. Field Crop
Abstr. 41: 524, 1988).
[16] G. O. Kayode, and A. Odulaja, Response of cowpea (Vigna unguiculata)
to spacing in the savanna and Rainforest zones of Nigeria. Expl. Agric.
(1985), 21, pp. 291-296, 1985.
[17] O. P. Mali, and A.L. Mali, Response of promising cowpea (Vigna
unguiculata) genotypes to row spacing and phosphate levels. Indian
Journal of Agricultural Science 61: 672-673. 1991. (C.f. Field Crop
Abst. 46: 5860, 1993).
[18] R .B. Mohdnoor, Effect of plant density on the dry seed yield of cowpea
in Malaysia. Tropical Grain Crops Branch MARDI, Serdang, Selangor,
Malaysia. 1981. (C.F. Field Crop Abst. 34: 8350, 1981).
[19] D. Nangju, Effect of density, plant type and season on growth and yield
of cowpea. J. Amer. Soc. 104:466-470, 1979.
[20] R. P. Panadey, Phenological responses of cowpea (Vigna unguiculata L.
Walp) under monosoon and summer conditions of Madhya Pradesh
(India). Journal of Research, Birsa, Agricultural University, 3: 1, 67-71,
1991.
[21] N. K. B. Patil, P.Y. Kamannavar and D.P. Biradar, Performance of
cowpea varieties at two inter row spacing. Journal of Maharashtera
Agricultural Universities. 16: 1. 1991.
[22] S. Rain, B.D. Patil and M.L. Purohit, Effect of dates of sowing, varieties
and the incidence of insect pests on the quality of fodder cowpea (Vigna
unguiculata (L.) Walp.). Indian Journal of Entomology, 52: 4, 613-617,
1990..
[23] H. H. Saleh, A.M. Hammoda, and M. H. Khalifa, Effect of density
treatments and fertilization levels on the productivity of cowpea.
Agricultural Research Center, Ministry of Agriculture 58: 77-86. 1980.
[24] H. Septetoglu, ,and A. Ceylan, An investigation on the effects of plant
spacing on the yield components of cowpeas (Vigna sinensis Endl)
under the ecological conditions of Bornova. (C.F. Field Abst. 44: 4036,
1991).
[25] W. M. Steele, Cowpeas Vigna unguiculata (Leguminosae-Papilionatae).
p.183-185. In: N.W. Simmonds (ed.). Evolution of crop plants.
Longman, New York, 1976..
[26] K. R. Stino, M.A. Abdel-Fattah and A.S. Abdel-Salam, Effect of spacing
and planting dates on some seed characters of cowpea, Vigna sinensis,
Savi. The Egyptian Soc. Hort. Magazine. 139:617-630. 1967.
[27] K. R. Stino, M.A. Abdel-Fattah and A.S. Abdel-Salam, Effect of spacing
and planting dates on some pod characters of cowpea, Vigna sinensis,
Savi. Bull. Faculty Agric. Cairo Univ. XIX:21-31. 1968.
[28] K. R. Stino, M.A. Abdel-Fattah and A.S. Abdel-Salam, Effect of spacing
and planting dates on some vegetative characters of cowpea, Vigna
sinensis, Savi Bull. Faculty Agric. Cairo Univ. XIX:23-38. 1968a.
[29] P. J. Stoffella, and D.J. Fousek, Influence of within-row spacing on
distribution patterns of yield components in cowpea. Scientia
Horticulturae, 41: 1-8. 1989.
[30] G. P. Tewari, Effects of planting dates on flowering and yields of
cowpeas in Nigeria. Expl. Agric. 1: 253-6. 1965. (C.F. Field Crop Abst.
2: 284, 1967).
[31] M. O. A. Warrag, Reproductive performance of cowpea (Vigna
unguiculata (L.) Walp.) in Qassim, Saudi Arabia. Arab Gulf Journal of
Scientific Research, Agricultural and Biological Sciences 6(3):349-358,
1988.