ISSN 2285-5785, ISSN CD-ROM 2285-5793, ISSN ONLINE 2285-5807, ISSN-L 2285-5785
 

THE STUDY OF SOME CULTIVARS OF COWPEA UNDER CLIMATE CHANGE IN SOUTHERN OLTENIA

Published in Scientific Papers. Series A. Agronomy, Vol. LIX
Written by Reta DRĂGHICI, Iulian DRĂGHICI, Mihaela CROITORU

The research was conducted during 2012-2015 in Research - Development Center for Agricultural Plants on Sands Dabuleni, and were aimed the study of 16 cultivars of cowpea in a comparative culture of competition, in order to introduce culture of the most valuable. In sandy soil conditions, the cultivars of cowpea registered a vegetation period in 92-109 days, requiring approximately 1997.2 to 2499.9oC, for maturing. The earliest varieties were: Aura 26, Aura, D4-1, Ofelia, and most late were Jiana, D12 / 2000 cowpea cultivars. The results concerning the productivity elements made from cowpea, indicate values differentiated by cultivar. They were marked by high levels of productivity elements, Aura 26, Ofelia, D2-b / 93, Aura, D2-3a, D3-5 cultivars, which recorded over 11 pods / plant and over 10 grains / pod. Between leaf area index (L.A.I.) and grain yield obtained at cultivars of cowpea, there is a distinct significantly negative correlation. The cultivars of cowpea, which have developed a value of L.A.I. by 5 to 5.4, were recorded the highest grain yields of 2603.7 to 2857 kg/ha (Ofelia, Aura, Aura 26, D2-3a, D3 / 93). Analysis on grain quality by cowpea cultivars, studied in sandy soils conditions, reflects an average protein by 22.4%, with values within limits from 20.5 to 23.8% and fats content with an average of 2.5%, which varied depending on the cultivar, between 1.9 to 2.9%.

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