THE COMPLEMENTARY EFFECT OF BIOSTIMULANTS AND NITROGEN FERTILIZER ON IMPROVING THE GROWTH AND PRODUCTIVITY OF SQUASH (CUCURBITA PEPO L.) | ||||
| Menoufia Journal of Plant Production | ||||
| Article 2, Volume 6, Issue 11, November 2021, Page 491-505 PDF (234.72 K) | ||||
| Document Type: original papers | ||||
| DOI: 10.21608/mjppf.2021.207234 | ||||
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| Author | ||||
| M.A. Taha | ||||
| Horticulture Dept., Fac. of Agric., Menoufia Univ., Shebin El- Kom, Egypt. | ||||
| Abstract | ||||
| Field research experiments were conducted during the two successive growing seasons of 2019/2020 and 2020 in the Experimental Farm, Faculty of Agriculture, Menoufia University to evaluate changes in growth, nutritional contents and yield of squash (Cucurbita pepo L.) under the foliar application of four biostimulant treatments i.e., aqueous moringa leaf extract at 1:30 v/v (MLE) and potent microorganisms at 20 mL L-1 (EM1) as natural growth regulators each alone or tougher or in combinations with N at rates of 0, 75 and 100% of the recommended nitrogen fertilization rate. This research was coordinated in a Split plot design in three replications. The results showed that the addition of nitrogen at 100% led to a maximum significant increase in the growth chrematistics, that is, the number of leaves and the fresh and dry weight of leaves compared to the unfertilized control. The chlorophyll contents increase significantly with increasing N supply up to 75% with moringa leaf extract foliar application. The highest N, P and K contents were found in squash leaves treated with N at 100% of the recommended rate. The yield and its components of squash plants increased significantly with the increased of nitrogen supply up to 100% of the recommended rate. Combined application of EM1 and MLE resulted in a significant increase in growth traits and fruit yield compared to the control treatment. | ||||
| Keywords | ||||
| N rates; EM1; Moringa oleifera Leaf Extract; squash; quality | ||||
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