Effect of biofertilizer application and aspartic acid spray on some vegetative and yield characteristics of apple trees
DOI:
https://doi.org/10.59658/jkas.v13i1.5739Keywords:
Biofertilizer, aspartic acid , apple treesAbstract
A field trial was carried out on 5 years-old apple trees (c.v. Kaghdi), grown in a pri-vate orchard in the Al-Muradiya district, Diyala governorate, Iraq, throughout the 2024 growing season to study the effects of biofertilizer FULZYME Plus application ( 0, 25 and 50 g per tree), and aspartic acid spray (0,50,100,and 150mg L-1) on some vegetative and yield characteristics. A factorial experiment with a randomized com-plete block design was used, with two factors (3*4) and two trees for each experi-mental unit. Data were analyzed using SAS and LSR test at 0.05 probability level. Results Indicated that applying biofertilizer at 50 gm per tree caused a considerable increase in carbohydrate content and leaf chlorophyll, fruit weight, fruit juice TSS, and sugar content, whereas it caused a significant reduction of titratable acidity. On the other hand, aspartic acid spray increased leaves' carbohydrate content, fruit weight, TSS, And the total sugar content of fruit juice. The interaction between bio-fertilizer application at 50 gm per tree and 150 mg L-1 of aspartic acid spray led to obtaining the highest leaf carbohydrate content, fruit weight, TSS, and total sugar in fruit juice.
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Copyright (c) 2026 Copyright (c) 2024 is the Author's article. Published by the Journal of Kerbala for Agricultural Sciences under a CC BY 4.0 license
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