Response of ratoons of "Williams Hybrid" banana to N, P and K fertilization

Hanan H. Elkhidir, Mohamed E. Elkashif, Osman M. Elamin


Field experiments were conducted at the National Institute for the Promotion of Horticultural Exports (NIPHE) research farm to determine the effect of N, P and K levels on earliness, yield components and fruit quality of the ratoons of "Williams Hybrid" banana. Treatments consisted of 5 N levels (0, 69, 138, 207 and 276 g N mat-1 year-1), 2 P levels (0 and 20 g P mat-1 year-1) and 2 K levels (0 and 41g K mat-1 year-1). The treatments were arranged in a randomized complete block design with 3 replications. Application of N alone or in combination with K resulted in a significant shortening of the period from shooting to harvesting. Bunch maturation was accelerated with the application of 207 g N mat-1 year-1 in combination with 41g K mat-1 year-1. Banana yield and yield components were significantly increased by the application of N, P and K in the three ratoons. The highest yield and yield components were obtained by the application of 207g N mat-1year-1 in combination with 41 g Kmat-1 year-1. The positive response of ratoons to K2SO4 was mostly due to the presence of K in the formulation rather that sulfur because the plants did not show any sulfur deficiency symptoms. Application of K in combination with N resulted in a longer green life and improved fruit quality.


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