Effect of potassium fertilizer levels on flowering percentage, some physicagronomical characteristics and population density of major insects on sugarcane breeding varieties [electronic resource].

Includes references.

Two field experiments were conducted at El-Sabahia Agricultural Research Station, Alexandria, Sugar Crops Research Center during two successive seasons 200512006 and 200612007 in order to evaluate the effect of potassium fertilizer (0, 24, 48 and 72kg of K20/fed) on some morphological and technological characters in addition to improve the resistance to infestation using four varieties sugarcane (GT54-9, F153, B019 andC0413). The data indicated that the four varieties of sugarcane varied significantly in the most studied characters under all treatments. GT54-9 variety produced the highest values in all characters under study. In addition, the third level of potassium fertilizer (48kg.) found to be more effective on most characters under this Investigation. On the other h.and, GT54-9 variety of sugarcane found to be resistance to infestation by mealy bug, Pseudococcus sachari CKII., soft scale insect Aclerda takashii Kuwane and pink stem borer , Sesamia cretica Led, while C0413 variety was susceptible in two seasons. The treatment with 48Kg of potassium decreased the population of sugar cane insects under test in all varieties.

Summary in Arabic.

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