Effect of foliar spraying by some micro nutrients on growth, yield, chemical constituents and anatomical structure of cotton plants (Gossypium vitifolium L.) grown in newly reclaimed sandy soil [electronic resource].

Includes references.

Two field experiments were carried out in the two successive seasons of 2002 and 2003 to study the effect of spraying some micro nutrients namely, Fe, Mn and Zn either alone or in combination at rates of 0.05, 0.08 and 0.1 % as cbelated nutrient on vegetative growth, yield and its components, chemical constituents and anatomical structure of cotton (Gossypium vitifolium L.) plants (cultivar Giza 70) grown under newly reclaimed soil conditions. The results indicated that increasing the rates of Fe, Mn and Zn applied either alone or in ~ombinatiol1 caused an increase in plant height, number of leaves / plant, number of main stem internodes / plant, leaf area and number offruit branches / plant and dry weight of leaves / plant in the case of vegetative growth, in addition to increasing the number of bolls / plant, number of opened bolls / plant, weight of boll / plant, weight of seeds / plant and yield of seed cotton / fed. at the harvesting stage . Similar trend "vas observed for the chemical constituents of cotton plants i.e. N, P, K, Fe, Zn, Mn, total carbohydrates, total chlorophylls and carotenoids concentrations in leaves, crude proteins and oil concentrations in seeds . As for the effect of rnicronutrients on the anatomical structure of stem and leaf of cotton plants, the results indicated positive effects with all the studied characters of plant organs. The highest increases in this experiment was obtained by the treated plants with the combined treatment of (Fe + Mn + Zn) especially at the highest rate (0.1 %),in the two seasons. Hence, under newly reclaimed soil conditions refer to spraying cotton plants with a mixture of these micronutrients at a rate of 0.1 % exhibited optimum in yield and its components.

Summary in Arabic.

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