GERMINATION ABILITYAND SEED YIELDOF COWPEAAS AFFECTED BYPLANTING DATES

Y. Naserella, A.; F.  Abdul Hussain, A.

	GERMINATION ABILITYAND SEED YIELDOF COWPEAAS AFFECTED BYPLANTING DATES
The Iraqi Journal of Agricultural Science
Article 1, Volume 46, Issue 4, 2015, Pages 503-511
Authors
A. Y. Naserella; A. F. Abdul Hussain
Abstract
A field experiment was conducted during spring and fall seasons 2013 at the experimental field of crop science department, college of Agriculture, Abu-Ghraib to study the effect of sowing dates on yield, yield components, seed quality, and field emergence of cowpea. A split plot arrangement in RCBD with 3 replications was used ,the main plots were consisted of 5 sowing dates 1st March 15th March, 30th March, 15th July, and 15th August, and two varieties Blackeye Wonder, and California Blackeye as sub plots. The results indicated that the sowing date in 15th July was significantly superior in plant height, leaf area index 45. 83 cm, 1.71 respectively, pods/plant, seeds/pod, and seed yield 19.56 pod.plant-1, 7.13 seeds.plant-1, 1425 kg.ha-1,germination, radical length, fresh and dry weight of seedling, seed vigor index, and field emergence 72.5%, 8.71 cm, 11.46 gm, 2.57 gm, 1030, and 50.25% respectively. The variety Blackeye wonder was superior in plant height, leaf area index 38.8 cm, 1.404 respectively, pods/plant, seed yield 9.4 pod.plant-1, 638 kg.ha-1 respectively, radical length, seedling fresh and dry weight, seed vigor index, and field emergence 8.71cm, 9.74 gm, 2.25 gm, 825, 42.80 %, respectively.
Keywords
Cowpea; Yield and yield components; seed quality

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