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¹ Ondokuz Mayıs Üniversitesi, Fen Bilimleri Enstitüsü, Tarla Bitkileri Anabilim Dalı, Samsun
² Ondokuz Mayıs Üniversitesi, Ziraat Fakültesi, Tarla Bitkileri Bölümü, Samsun DOI : 10.21566/tarbitderg.280374 - Cowpea which can be used and consumed as bean is a legume plant. It is affected less than beans in the unfavorable ecological conditions and particulary the high temperatures and drought during flowering period. Otherwise it has got the ability to produce rich vegetative material therefore it is used in soil conservation. Cowpea can be sown in intercropping system and particulary at area which is sown rice it can be attended crop rotation. These show that cowpea has got a chance to grown in our region. Amazon and Sırma varieties were developed for our region conditions and were registered in 2010. The cultivation package of these varieties and should be prepared for the promotion of agriculture and introduced to farmer. This study were planned to determine the appropriate sowing time and plant density of two varieties and the effects of the 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), two sowing time (early, late), four row space (30, 45, 60, 75 cm). Analysis of variance was done to separate on the environments. The effect of sowing time, variety, row spacing on the seed yield in Atakum that was made conventional agriculture; sowing time, row spacing and timexrow spacing interaction in Bafra that was made organic agriculture were significant as statistically. The highest seed yield per plant was obtained from early sowing time both enviroments. Narrow row spaces effected seed yield per plant negatively. Keywords : Cowpea, sowing time, row spacing