Effect of low temperatures and some natural subestances on fruits and seed yield of squash (Cucurbita pepa L.) in early season [electronic resource].

Includes reference.

Two field experiments were conducted at EI-Baramoon Research Station ,Hart. Research Institute during two early summer seasons 2001 and 2002 .This work was designed to study the effect of foliar application of nigella oil (2 ml/ L.) ,yeast extract (5%) garlic extract (20 ml/L) beside on control treatment in combination with seed cold treatments, i.e. 0⁰C,-1⁰C and ,_2⁰C as well as room temperature on plant growth and flowering , chemical constituents, fruit yield and seed yield of squash cv. Eskandrani .The results could be summarized as follows :- The applied treatments significantly differed among them and were superior the control in their impact on all growth parameters, flowering behavior, foliar mineral concentration (NPK and Cal, chlorophyll (a+b), early and total fruit yield, seed yield and its components during the two seasons. The best results were obtained by application of yeast extract 5% X _2⁰C treatment. Therefore, it could be recommended for using this treatment to raise fruit and seed productivity and improving fruit quality of squash cv. Eskandrani under conditions of the early summer pianting.

Summary in Arabic.

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