Effect of different levels addition of organic fertilizer as Humic acid on growth and productivity of Cucurbita pepo L. planted in calcareous soil
Abstract
A field experiment was conducted in the experimental field of the Horticulture Department - Faculty of Agriculture, Omar Al-Mukhtar University - Al-Bayda, Al-Jabal Al-Akhdar during the agricultural season (2021-2022) to study the effect of adding different levels of organic fertilizer in the form of humic acid on the growth and productivity of zucchini Cucurbita pepo L. The soil has a clayey texture and because of its high calcium carbonate content reaching 17%, it can be classified as calcareous soil. A randomized complete block design (RCBD) with three replicates was used and the averages were compared using the least significant difference test. Humic acid addition rates (0.0, 1.0, 2.0, 4.0) g/L were used. The results of the statistical analysis showed that humic acid fertilization treatments had a positive effect on the growth and productivity parameters of zucchini plants compared to the control treatment. The treatment (4 g/L) had the best effect compared to the other treatments and the control treatment. The results of the statistical analysis showed that the added concentrations had a positive effect on the productive growth parameters of zucchini plants compared to the control treatment and other treatments.
Keywords:
Zucchini plant - Humic acid - Organic fertilizer
How to Cite
Abdel-kader Mohammed a boJadeda, & Faraj Abdelnabi Mohammed. (2025). Effect of different levels addition of organic fertilizer as Humic acid on growth and productivity of Cucurbita pepo L. planted in calcareous soil. Bani Waleed University Journal of Humanities and Applied Sciences, 10(2), 183-191. https://doi.org/10.58916/jhas.v10i2.730
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