The present study was carried out on 32 female Jojoba" simmondsia chinensis-Link" shrubs were about 12 years old during 2007 & 2008 experimental seasons. The shrubs have been grown at the Experimental Orchard of Ali Moubark, south El-Tahrir, El-Behira Governorate, Egypt. The shrubs growing in sandy soil in two lines a & b at distance of 5 X 5 meter apart and irrigated with drip irrigation system. The present study was aimed to select the best shrubs on yield and a considerable amount of seeds contained higher oil, as well as propagated the selected shrubs using soft stem cutting to study their rooting ability. The morphological characteristics of jojoba shrubs (vegetative growth characters, flowering, and fruiting), yield as well as seed physical and chemical proprieties were stimated in this study.The results showed that the growth vigor of shrubs varied to be strong, moderate and weak while most of shrubs were a drooping in habit growth. Shrub No.8 b had the highest shrubs height, seed length, width and weight, while shrub No.22a had the highest value of circumference and shrub No. 6a had the highest number of leaves/ meter, leaf area and leaf L/W ratio, number of flowers and fruits per meters in both seasons. Shrubs No.15a, 8b had the highest leaf area and leaf L/W ratio, along with their, yield was differed from first and second seasons. Shrub No.6a was a superior in both seasons with seeds yield of 3.250 kg in the first season and 3.133 kg in the second season.The highest number of ridges was observed in shrub No.2b, number of grooves were varied from 2 to 3 grooves and the highest seed oil content was in shrub No.13b with the percentage of 60.70% and 61.09% in the first and second seasons. Concerning vegetative propagation of the best jojoba shrubs in yield and seed oil content (No. 6a, 2b, 8b, 13b, 14b), data showed that shrub No. 6a had the highest percentage of rooting cutting, length of root and fresh weight of roots, while shrub No. 13b had the highest number of roots per rooting cutting and shrub No. 14b had the highest dry weight of roots.The natural degree of variability appeared enormous, that gives a plant scientist a huge range of possible gene combinations for future selection and improvement of jojoba as a new-industrial and commercial crop.
The present investigation was conducted during the two seasons , 2013 and 2014 to assess the effect of foliar application of garlic oil (3%), olive oil (3%), jasmine oil (0.3%) as a natural oils and hydrogen cyanamide at 1.5% (Hydrogen cynamide), alone or in combinations, on the percentage and date of buds emergence, vegetative growth, fruit quality and yield of Sultani fig cultivar grown under Sohag Governorate conditions. All sprayed treatments significantly improved vegetative growth, fruit quality and yield. The combination of olive oil and hydrogen cyanamide gave the highest values of the studied traits, earliness of the buds emergence and its improved percentage, enhanced vegetative growth and the number of fruits/tree. It also led to advancement of harvesting date, reduced immature fruit %, promoting yield and fruit quality, that led to achieve high profit compared to other treatments and the control (untreated).
Two field experiments were carried out during the two successive winter growing seasons of 2013 and 2014at the Experimental Farm of the Environmental Studies and Research Institute, University Sadat City to study the effect of natural ores and foliar spray treatments on bulb yield and its components, chemical composition , bulb quality as well as phytopathology of two onion (Allium cepa L.) cvs. Giza 20 Giza Red grown under sandy soil conditions. Natural ores treatments (mixed) were added to the soil before planting at rates of 500kg. per fed., while the foliar spray treatments were sprayed in growth season with recommended dose as follows, Biophertel Ore at 10 cm 3 / letter, Biocide Ore at 5 g / letter , Bentocide Ore at 10 g / letter, Ammonium nitrate liquid (33%)at 0.5 liter / 50 L of water. A randomized complete blocks design with three replicates was used. The results showed that, cv. Giza 20 significantly gave the highest values in most of all tested parameters i.e., yield and yield components, bulb quality, mineral contents of bulbs as well as phytopathology than cv. Giza Red during both seasons. In addition, fresh weight of bulb, total yield per fed., marketable yield, quality of bulbs (mean shape index, number of episode circular and T.S.S %) and chemical composition of bulbs were significantly increased by using natural ores (abd+mix.) , while phytopathology significantly affected by adding natural ores mixed at the soil than other treatments.The interaction between the cultivars and natural ores was not significantly effected in all parameter of study in both seasons.
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