The Influence of Decreasing Npk Mineral Fertilizers on Valencia Orange Plants on Vegetative Growth and Nutritional Condition

Document Type : Original Article

Authors

1 Hort. Dept., Fac. Agric., Benha Univ., Egypt.

2 Horticulture Department, Faculty of Agriculture (Moshtohor), Benha University, Egypt

Abstract

This study was conducted on fruit trees of the Valencia orange trees variety grafted on Volkamariana rootstock growing: conditions of desert lands and ground water during two successive (2021/2022 and 2022/2023)- on a private farm (Wadi El Natroun),in Beheira Governorate, Egypt. The experiment was studied the effectiveness of reducing mineral fertilizer NPK using organic compost fertilizer and effective microorganisms in improving growth and  nutritional status of summer orange trees at a rate of (7.5, 15, 22.5 and 30 kg compost / tree), and Bio vit fertilizer (36 ml/tree). Among the results obtained is a significant improvement effects biofertilization and organic fertilization methods on the nutritional status and growth of trees.  Analysis of the data collected during the study showed that there was a statistical significance in increasing vegetative growth and leaf chemical composition with different doses of organic and biological fertilization treatments. The compination between 15kg of compost, biofertilizer and 50% NPK chemical fertilizer had the best results in vegetative growth and nutritional status. As well as the results obtained can be recommended. 

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Annals of Agricultural Science, Moshtohor
Volume 63, Issue 1
March 2025
Pages 105-114

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