Abobatta, W., El-Azazy, A. (2020). Role of organic and biofertilizers in citrus orchards. Aswan University Journal of Environmental Studies, 1(1), 13-27. doi: 10.21608/aujes.2020.124530
W.F. Abobatta; A.M. El-Azazy. "Role of organic and biofertilizers in citrus orchards". Aswan University Journal of Environmental Studies, 1, 1, 2020, 13-27. doi: 10.21608/aujes.2020.124530
Abobatta, W., El-Azazy, A. (2020). 'Role of organic and biofertilizers in citrus orchards', Aswan University Journal of Environmental Studies, 1(1), pp. 13-27. doi: 10.21608/aujes.2020.124530
Abobatta, W., El-Azazy, A. Role of organic and biofertilizers in citrus orchards. Aswan University Journal of Environmental Studies, 2020; 1(1): 13-27. doi: 10.21608/aujes.2020.124530
Role of organic and biofertilizers in citrus orchards
Agriculture Research Center, Horticulture Research Institute, Citrus department, Giza, Egypt.
Abstract
Citrus trees (Citrus spp.) considered one of the major fruit worldwide, due to continuous and excessive use of synthetic fertilizers, there is a severe hazard to human health and to environment. The integrated fertilizing system in citrus orchards contributes to improve crop production through eco-friendly nutrient supply, producing healthy fruits, enhancing the plant tolerance to biotic stresses, increases growers’ profits, and sustains natural resources. There are numerous types of organic fertilizers used in citrus orchards include Compost, Vermicompost, Humic substances, Biochar, Farm manure, and, microorganisms in biofertilizers increase the amount and availability of essential elements to plant, there are various biofertilizers used for different purposes according to the role of microorganisms like Nitrogen-fixing microorganisms like Azotobacter, Azospirillum, Rhizobium and Frankia; Phosphorous solubilizing microbes such as Pseudomonas and Bacillus; Phosphorous mobilizing as Vascular arbuscular mycorrhiza, and Plant growth promoting rhizobacteria (PGPR). There are numerous beneficial effects of organic and biofertilizers include increasing availability of nutrients in soils, increase the tree productivity, enhancing fruit quality, improve soil properties, stimulate microflora population in the rhizosphere, reducing the harmful effects of pathogenic organisms, and improving plant tolerance to biotic and abiotic stresses, particularly using both organic and biofertilizers play a critical role in environmental conservation, they can compensate large amounts of inorganic, fertilizer , reducing the great amount of inorganic fertilizer used indiscriminately in citrus orchards. Using a consortium of organic and biofertilizers with mineral fertilizers provide a positive response in citrus orchards.
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