Effect of different nitrogen fertilizer sources on growth and fruiting of Barhee date palms under sandy soil conditions

Mohamed, S. H. F.; Khodair, O. A.

doi:10.21608/aasj.2022.348406

Effect of different nitrogen fertilizer sources on growth and fruiting of Barhee date palms under sandy soil conditions

Document Type : Research article

Authors

Department of Horticulture, Faculty of Agriculture, Al-Azhar University, Assiut, Egypt

10.21608/aasj.2022.348406

Abstract

This study was carried out during 2021 and 2022 seasons at private orchard of Barhee date palms, west Samalout, Minia Governorate, Egypt. Mineral, organic and bio-fertilizers were applied at various proportions of recommended-N doses, 1000g/palm/year. Results indicated that supplying Barhee date palms is advisable to supply the palm with suitable-N via 40% mineral, 40% organic and 20% biofertilizer that very effective in improving all growth characters, yield/ palm and dates quality compared with using mineral-N completely or 70% mineral plus 30% organic and biofertilization. A gradual increase nutritional status palm and dates quality due to reduce the percentages of mineral nitrogen from 100 to 40 % and at the same time increasing the percentages of organic and bio-fertilizers from 30 to 60%. Such effects improve the fruits quality in terms of increasing fruit weight, TSS%, sugars contents and decreasing percentage of tannins %, total fibre crude and total acidity. The used of organic fertilization source of plant compost was better than the farmyard manure. Hence, to improve Barhee date palms yield quantitively and qualitatively as well as reduce production cost and environmental pollution. It is advisable to supply the palm with eth suitable nitrogen 1000 g/palm/year via 40% mineral + 20% organic + 20% bio- fertilization.

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