The Impact of Organic and Mineral Fertilizations, Plant Spacing and Foliar Aplicaton of Yeast and Garlic Extract on Seed Production of Squash. 1-Vegetative Growth and Leaf Chemical Constituents

Abstract

This study was carried out during the two summer seasons of 2011 and 2012 at Sakha Agricultural Research Station Farm, Kafr El-Sheikh Governorate, Egypt on summer squash (Cucurbita pepo L.) El-Askandarani cultivar to study the impact of plant spacing(30,40 and 60cm between plants), nitrogen fertilizer sources (organic and inorganic) and foliar spray with biostmulants(garlic or yeast extracts) and their interactions on vegetative parameters and leaf chemical constituents.Resultes indicated that, the highest values of vegetative growth characters i.e., plant length, number of leaves, fresh and dry weight, leaf area and chlorophyll contents in leaves as well as chemical constituents of leaves(N, P, K, Fe, Zn and Mn)were recorded when plants growing at 60 cm between plants. Squash plants sprayed with 2.5cm\l garlic extracts recorded better growth performance and higher values of chemical constituents of leaves than unsprayed plants. Also fertilized plants with 50%organic+50%inorganic recorded the highest significant values of most aforementioned parameters compared with control. The best results of both vegetative growth parameters and chemical constituents of leaves were recorded when plants growing at 60cm between them and fertilized by 50%organic as compost +50%inorganic as ammonium nitrate (100 kg/fed.) and sprayed with garlic or yeast extracts at 2.5cm/l in both seasons. Therefore, this treatment could be recommended for improving squash plants performance under similar condition of this study.

EFFECT OF BIO- FERTILIZATERS AND PLANT EXTRACTS ON GROWTH, ESSENTIAL OIL AND CHEMICAL CONSTITUENTS OF SAGE (Salvia officinalis L.) PLANT, UNDER WATER STRESS CONDITIONS.

“…This could be attributed to the protective effect of garlic extracts against plant pathogens, which improved plant vitality, growth and the efficiency of nutrients uptake. These results are in agreement with those obtained by Tartoura et al (2013) on squash.…”

The Use of Some Micronutrients and Plant Extracts of Resistance to Powdery Mildew and Nutrition Dill Plants in The Gharbiyah Governorate

“…Recently, great attention has been focused on the possibility of using natural and salty substitute, i.e. garlic and Aloe vera extracts as a substitute for mineral fertilizers which have pollutant effects in the soil and plants and in turn, cause damage of the human health, foliar sprays of garlic and Aloe vera extracts are used in medicinal and aromatic plants production for stimulating and hastening plant growth, flowering and fruit setting and consequently increasing early and total yield, Tartoura et al (2013) and Nour Eldeen (2014).…”