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Süleyman Demirel Üniversitesi (2004)

The effect of different sowing times on quality and yield properties of cowpea (Vigna unguiculata (L.) Walp.)cultivars in arid and irrigated conditions

ÜNLÜ Halime

Titre : The effect of different sowing times on quality and yield properties of cowpea (Vigna unguiculata (L.) Walp.)cultivars in arid and irrigated conditions

Börülce (Vigna unguiculata (L.) Walp.) çeşitlerinde farklı ekim zamanlarının sulu ve kurak koşullarda verim ve kalite özelliklerine etkisi

Auteur : ÜNLÜ Halime

Université de soutenance : Süleyman Demirel Üniversitesi

Grade : Master 2004

Résumé
This study was conducted in Isparta ecologycal conditions for determining the mostfavourable sowing times of cowpea (Vigna unguiculata (L.) Walp) cultivars in aridand irrigated conditions.In arid and irrigated conditions three cowpea cultivars ; Akkiz, Karnikara andSarigöbek, five different sowing times (15 May, 30 May, 15 June, 30 June and 15July) were used. Field trials were designed in complete randomized blocks with fourreplications and 30 plants in each replication.In the last sowing time, cowpea cultivars were not able to complete their vegetationperiods so their seed harvest was not realized.In this research the following plant characteristics were determined ; seed yield perdecare (kg/da), seed yield per plant (g/plant), biological yield per decare (kg/da),pod per plant (number/plant), seed number per pod (number/pod), pod length (cm),pod width (mm), stem diameter (mm), number of primary branch (number/plant),1000 seed weight (g) and seed protein ratio (%)In the result of this study the highest seed yield per decare (213.0 kg/da) wasobtained in Sarigöbek cultivar at 30 May sowing time and in irrigated conditions.Biological yield per decare varied between 132.7-396.4 kg/da.Pod number per plant were varied between 3.8 and 33.4 number/plant ; seed numberper pod ranging from 5.9 to 11.1 number/pod. Pod length, pod width and 1000 seedweight were changed between 10.97-18.47 cm, 5.05-8.78 mm, 125.54-215.25 grespectively.Plant stem diameter was between 5.9 and 10.8 mm ; number of primary branch inplant changed from 6.4 to 11.1 number/plant. In this study, seed protein ratio % wasfound between 29.32 and 41.79.

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