Abstract
Nanotechnology and organic fertilization are represented the most important tools for agriculture and anticipated to become a driving economic force in the near future. Two field experiments were carried out on sandy soil at El Ismailia Research Station, Agriculture Research Center Egypt, to study the effects of application of nitrogen fertilizer, as black urea, Nano black urea and organic fertilizer FMY, nutrients and productivity of Cucurbita pepo L. Two rates of FMY at 50 and 100 m3 ha-1 was applied to the soil with soil application of black urea and Nano black urea) with applied both as foliar application on plants. A split-plot design with four replications for each treatment was used, during the two summer seasons of 2019 and 2020. Results obtained showed that yield components of plants increased with applied Nano black urea and black urea accompanied with application both rates of FMY. The Nano black urea accompanied with FMY applied at a rate of 100 m3 ha-1 give the highest yield values. However, effective treatment was foliar Nano black urea application with a rate of 0.5 ppm with organic fertilizer FMY at rate of 100 m3 ha-1 and gave the highest significant values of fruits yield (300, 327, 342, 356 and 373 g plant-1 for five times picked, respectively. On the other hands, in foliar application, fruits weight yield was higher than the first cut. Nutrients contents showed almost a trend as all parameters under study the superior treatment was at Nano black urea foliar application a rate of 0.5 ppm with 100 m3 ha-1 of FMY with high availability of nutrients at the studied soil.
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