Abstract:
This study was conduct to study the effect of bio activator Elixir on growth and yield of grape vine (Vitis vinefera L.) Crimson and Cardinal cultivars. The experiment was carried out at Zadna for Agricultural Services Elsilait Scheme Khartoum North, Sudan during the season 2015. Four treatments of bio activator Elixir (0, 4, 12, 20 ml/plant) were used the experiment outs completely randomized block design, with three replication was used. The vegetative growth and yield parameters were evaluated according to the number of leaves per plant, leaf area, number of branches, number of inflorescences, length of inflorescences, number of cluster, length of clusters, number of berries on clusters, berry diameter, berry weight, and TSS values. The results showed all increase on vegetative growth, number of leaves, leaf area and number of branches. The highest value was obtained with treatment 20ml/plant Elixir in both cultivars. While, treatment 4ml/plant showed the highest number of inflorescences in Crimson cultivar. For length of inflorescences treatment 12ml/plant and 20ml/plant showed the highest values on Cardinal cultivar and treatment 20ml/plant in Crimson cultivar. The highest values for number of clusters, cluster weight and number of berries on cluster were given by treatment 20ml/plant. For berry diameter the treatment 12ml/plant and 20ml/plant gave highest values in Cardinal cultivar. For Crimson cultivar the treatment 20ml/plant gave the highest value. For cluster weight treatment 20ml/plant showed the highest values in both cultivars. The treatment 20ml/plant gave the highest value of TSS. And has been getting highest yield when used the treatment 20ml/plant for both cultivars.
