Cowpea which can be used and consumed as bean is a legume plant. It is affected less than beans inthe unfavorable ecological conditions and particulary the high temperatures and drought during floweringperiod. Otherwise it has got the ability to produce rich vegetative material therefore it is used in soilconservation. Cowpea can be sown in intercropping system and particulary at area which is sown rice it canbe attended crop rotation. These show that cowpea has got a chance to grown in our region. Amazon andSırma varieties were developed for our region conditions and were registered in 2010. The cultivation packageof these varieties and should be prepared for the promotion of agriculture and introduced to farmer. This studywere planned to determine the appropriate sowing time and plant density of two varieties and the effects ofthe seed yield and yield characteristics of these factors. The experiments were established on two enviroment(conventional and organic) split split plot desing with 3 replication at two varieties (Amazon, Sırma), twosowing time (early, late), four row space (30, 45, 60, 75 cm). Analysis of variance was done to separate onthe environments. The effect of sowing time, variety, row spacing on the seed yield in Atakum that was madeconventional agriculture; sowing time, row spacing and timexrow spacing interaction in Bafra that was madeorganic agriculture were significant as statistically. The highest seed yield per plant was obtained from earlysowing time both enviroments. Narrow row spaces effected seed yield per plant negatively.