The role of Potassium fertilization , foliar application of Algaton and Salicylic acid on growth and yield of summer squash (Cucurbita pepo L.)

Muthanna Journal of Pure Sciences – MJPS
Volume 3 issue 1, 2016

Baker Ch. Hadi Al-Rubaee Eiman J. Abdul-Rassol


This study was conducted at the fields of the station of Agricultural experiment and
Researches, College of Agriculture, University of Al-Muthana , Muthana Province for
autumn and spring season, 2013– 2014. The aim of this study was to investigate the effect
of potassium fertilization as (K2S04) at four levels added before sowing. The
recommended amount was 145 Kg Donum-1 and they are ( quarter, half , three quarter and
all the amount of the fertilizers) which is (K1, K2, K3 and K4 ) respectively. Foliar
application of organic nutrient with Algaton used at three levels (0, 1, 2 ml L-1) from
organic fertilizers (A0, A1 and A2) consequently. The foliar application were conducted at
four stages (1– 2) weeks after planting, at the beginning of flowering , during the fruit
stage and after 2 weeks at the previous spray, and salicylic acid which conducted three
concentrations and they are ( 0, 2 and 4 mM) which were (S0, S2 and S4) consequently.
The spray operations were done after one week of the first spraying with organic
fertilizers, and their interaction on the morphological, physiological, yield characters of
Cucarbita pepo cv. Ardendo
RCBD was adapted with three replications, means were compared using L.S.D at
0.05 level of significant. There was a significant increase in the vegetative characters,
fresh and dry weight, N, P, K in fruits ,early yield and total yield.

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