The experiments were conducted to study the effect of organic manure, soil amendment i.e., 0; 25; 30 and 35 m³/feddan, and four rates of sulfur application i.e., 0; 100; 150 and 200 kg/feddan, where added during soil preparation for planting, on growth, yield and chemical composition of broad bean, Aspany F1 cv., grown in sandy soil conditions. Results revealed that all organic manure treatments showed increase in all growth and yield characters when compared with control treatment in both growing seasons. Organic manure at the rate of 35 m³/feddan has given significant increase in plant height and weight; number of branches/plant; pods length, pod fresh weight and N; P and K (%), while organic manure at the rate of 30 m³/feddan had superior significantly effect on number of pods/plant; number of seeds/pod; plant yield and total yield (ton/feddan), followed by organic manure at the rate of 35 m³/feddan. No significant differences occurred between these two organic treatments in both seasons. Sulfur amendment at the rate of 200 kg/feddan, followed by the rate of 150 kg/feddan had got the highest values and significantly increased plant height and weight; number of branches/plant; number of pods/plant, pods length, average pod fresh weight, number of seeds/pod; plant yield; total yield (ton/feddan), as well as K and P (%). There were no significant differences between both treatments in both growing seasons.
Governorate. During the two consecutive seasons of 2015/2016 and 2016/2017, the experiments were conducted to study the effect of bio-fertilizers namely Nitroben at the rate of 1.5 kg/fed, Phosphorin at the rate of 1.5 kg/fed and a mixture of them and nanotitanium dioxide (TiO2) as foliar application at the rate of 0, 1 and 2 mg/L on growth, yield, chemical composition and pickle quality of turnip plant, purple top white glop cv. grown in sandy soil conditions. Results revealed that the highest values of growth, yield parameters and chemical contents were clear with bio-fertilizer application compared to control treatment (without application). No significant differences were found between bio-fertilizer treatments on most parameters. The highest values of growth, yield parameters and chemical contents were obtained with TiO2 application at the rate 2 mg/L, followed by rate of 1 mg/L as compared to control treatment (without application). No significant differences were found among TiO2 nanoparticle treatments on most parameters. Regarding to the effect of the bio-fertilizers and TiO2 treatments on turnip pickle quality, it was found that, Nitroben and Phosphorin bio-fertilizers and TiO2 spray had the more acceptable sensory scores and excellent texture characteristics. Also, investment ratio had been calculated.
The experiments were conducted to study the effect of soil mulch and two commercial anti-transpiration products i.e., anticool (2 and 4 ml/L) and green miracle (2 and 4 ml/L) beside control treatment as foliar application on growth, yield and chemical composition of cantaloupe plants cv. Regal grown under sandy soil conditions. Results revealed that soil mulch treatment significantly increased all most growth characters; yield and its components when compared with control treatment in both seasons. Foliar spray by green miracle at the rate of 4 ml/L showed a significant increase in plant height and weight; no. of branches/plant; leaf area; SPAD value; fruit weight and diameter; fruit moister (%); plant yield and total yield/feddan in both seasons. While, anticool rate of 4 ml/L showed significant increase in shoot dry matter (%); no. of leaves/plant; fruit T.S.S. and firmness and early yield in both seasons. Correlation and regression of some parameters indicated that for each one gram increase of plant weight was corresponding to the increase in fruit weight by 0.93 and 0.68 g and for each increase of one gram of fruit weight, total yield correspondingly increased by 0.031 and 0.025 ton/feddan, during the first and second seasons, respectively.
The experiments were conducted to study the effect of N fertilizer levels as soil addition (0, 50, 75, 100 kg/N/fed); chitosan nanoparticles and N loaded on chitosan nanoparticles treatments as foliar application [Ch, 0.25 (ChN1) and 0.5 (ChN2) mol/L] on growth, yield, chemical composition and storage potential of garlic plants, Chinese cv. grown in sandy soil conditions. Results revealed that N addition at the rate of 100 kg (N/fed) followed by 75 kg (N/fed), were superior significantly in growth, yield, chemical composition and storage potential parameters in both growing seasons, when compared with control treatment. N loaded on chitosan nanoparticles spray at the rate of 0.5 mol/l followed by 0.25 mol/l gave significant increase in all growth, yield, chemical composition and storage characters potential in both growing seasons, when compared to control treatments. At the harvest date, the highest values of investment ratio were obtained with N loaded on chitosan nanoparticles spray at the rate of 0.5 mol/l and N level at the rate of 100 kg N/fed in the first season, and with N level at the rate of 75 kg N/fed in the second season. The same trend of results was obtained with the end of storage period in both seasons. Linear correlation and regression of garlic traits were carried out. It may be worth to mention that with each increase of one gram of plant weight, total yield (ton/fed) of garlic correspondingly increased by 0.069 and 0.074 ton in the first and second seasons, respectively, and with each increase of one of percent of dry matter of garlic bulb, T El-Sagan, M.A. et al.
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