Effect of foliar with some micronutrients and slow release nitrogen fertilizers rates on productivity and quality of sweet potato (Ipomea Batats L) [electronic resource].

Includes references.

The present investigation was carried out at El- Bramoon Experimental Farm, Hort. Res. Institute, Mansoura. Dakahlia Governorate, Egypt (+ 7m altitude, 30° 11 latitude and 28° 26"1ongitude), during seasons of 2012 and 2013, to study the effect of slow release-N Sulfur coated urea "SCU" rats, and foliar spray with some micronutrients levels as well as their interaction on productivity, and quality of sweet potato cv. Abees. The most important finding could be summarized as follows: In general, results showed that the plants sprayed with mixture of micronutrients were better than those of the unsprayed ones. Increasing the foliar applied mixture of micronutrients concentration from 0 to 50 ppm significantly increase plant height, plant dry weight and leaves area/plant as well as total yield, marketable yield and weight, length and diameter. Moreover, foliar application of mixture of micronutrients significantly increased concentrations of N in the first season only. In addition, reducing sugar and carotene were increased in both seasons. Foliar spray with mixture of micronutrients at 50 ppm had the most interesting observation in the enhancing of most studied characters.

Summary in Arabic.

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