Response of some new tomato hybrids to foliar spray with some organic macro and micro nutrients [electronic resource].

Includes references.

A field experiment was conducted during the winter seasons of 2010/2011 and 2011/2012 to study the effect of some organic macro and micro nutrients such as NPK-humate, chelated micro-elements, organic K-citrate and organic Ca citrate on growth, chemical constituents and productivity of three tomato hybrids, i.e., GS-12, TH 99806 and NSX 9535. All applied treatments showed superior effects on plant height, number of leaves, number of branches, as well as fresh and dry weights of roots stems and leaves. Moreover, all used organic nutrients increased chlorophyll a and b, carotenoids contents and N, P, K% in leaves and their utilization quotient. The most effective treatment for increasing early and total yields and improved yield quality (total soluble solids (T.S.S) and vitamin C in fruits) was foliar application of tomato plants by NPK humate. While spraying plants with organic chelated micro-nutrients and K citrate as well as Ca citrate decreased NO₃ accumulation in fruits.

Summary in Arabic.

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