Abstract:
Three experiments were conducted under field and on-farm conditions at different locations in Khartoum State, Sudan in 2013 and 2014. The main objective was to study the effect of a new bioactivator and organic fertilizer ‘’Elixirr’’ on growth and yield of table grapes, alfalfa and muskmelon. Treatments were arranged in four blocks in a randomized complete block design for table grapes and muskmelon and in completely randomized design with three replicates for alfalfa. The results showed that application of Elixir, at the rate of (36 l/ha) split in five weekly doses under tropical conditions of Khartoum, significantly improved growth and yield parameters of table grapes Vitis vinifera L. Yield of table grapes increased steadily with increase in number of applications in both sites. High fruit cluster weights of 565.1 and 600.0 g and total yields of 27.7 and 41.3 t/ha, were recorded by variety Cardinal, from sites I and II, respectively. Fruits TSS was not significantly affected by Elixir. Supporting noticeably high yield increases were attained from on-farm trials by Elixir at Dal Agric. project on a new alfalfa (Medicago sativa L.) crop by 30.4% and the old crops by 42.0% and 35.1% in Dal and 72.7% and 169.6% in Inmaa project for first and second cuts, respectively. Likewise, application of 36l/ha of Elixir significantly increased muskmelon (Cucumis melo L.), variety Green Star; yield to 24.7 t/ha. Based on the above results, Elixir at the rate of 36 l/ha split in equal weekly doses significantly improved growth and productivity of table grapes, alfalfa and muskmelon under hot tropical conditions of Khartoum State
