Environmental Effect of Fertilizer Combinations on Some Vegetative Growth Indicators of Two Moringa spp. Trees

Abstract

The experiment was conducted in a Saran-covered greenhouse on agricultural land in Al-Gharraf District, Dhi Qar province, for the 2023-2024 season. The experiment included 10 treatments resulting from two factors: the first factor, the cultivars (Morinca Oliveira and Morinca shua), and the second factor, a fertilizer combination (5 levels) consisting of (0 without fertilizer, 1 g of nano-NPK fertilizer, 2 g of nano-NPK fertilizer, 1 kg of organic fertilizer, and 2 kg of organic fertilizer). The aim was to study the effect of fertilizer combinations on some vegetative growth indicators of two Morinca shua cultivars. The results indicated a significant increase for the Oleifera cultivar in height (165.18 cm), stem diameter (2.7100 cm), leaf area (2238.69 cm2), and dry matter of the vegetative total (19.379 g). The results also indicated a significant increase for the Shua cultivar in number of leaves. 19.11 leaves per plant and lateral branches 4.04 plant branches. As for the fertilizer combinations, the results showed that spraying nano-fertilizer at a concentration of 2 grams of nano-NPK resulted in a significant increase in height (130.56 cm), number of leaves (24.67 leaves per plant), stem diameter (2.2200 cm), lateral branches (4.11 plant branches), leaf area (2503.72 cm²), and dry matter of the vegetative system (19.312 g).