The effect of adding humic acid and bio-fertilizers on the chemical properties of date palm leaves, Barhi
DOI:
https://doi.org/10.59658/jkas.v12i3.4349Keywords:
Phoenix dactylifera L., Humic Acid, Biofertilizers, Qualitative traits.Abstract
An experiment was carried out in the horticultural development project of the Directorate of Agriculture in Karbala, located in the Um Gharagher area / Al-Husseiniya District - Karbala Governorate, during the growing season 2024 to investigate the response of palm trees of the Barhi variety to fertilization with humic acid and bio-fertilizers in the chemical qualities of date palm leaves Barhi variety. The study was carried out as a factorial experiment (4×4) according to the Completely randomized block design (R.C.B.D). with three replicates, the study included two factors, the first is the addition of humic acid in four concentrations (0, 5, 10 and 15) g 20 liters per palm-1 in four batches and the second is the addition of bio-fertilizers in four concentrations (Control and adding Azotobacter chrooccum bacteria at a concentration of 150 ml 20 liters per palm-1 and Bacillus megatherium at a concentration of 150 ml 20 liters per palm -1 and Azotobacter chrooccum bacteria at a concentration of 75 ml + adding Bacillus megatherium bacteria at a concentration of 75 ml) 20 liters per palm -1. The results showed that the ground addition treatment of humic acid (A15) outperformed the rest of the coefficients by giving the highest averages in the total leaf content of chlorophyll, carbohydrates, protein, nitrogen, phosphorus, and potassium (0.970 mg g-1, 12.376%, 6.397%, 1.024%, 0.495% and 1.293%), respectively. The ground addition treatment of bio-fertilizers (B3) also gave the highest averages in the total leaves content of chlorophyll, carbohydrates, protein, nitrogen, phosphorus, and potassium (0.993 mg g-1, 12.535%, 6.397%, 1.047%, 0.503% and 1.290%), respectively. As for the bilateral interaction between the two study factors, the treatment (A15B3) excelled by recording the highest average of all the studied traits.
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