The physiological study of the Effect of Foliar Spray of Humic Acid and Compound Fertilizers N.P.K on Some Chemical Characteristics of Date Palm cultivar Maktoom in the city of Karbala.
Zeinab A. M. Altememe Alaa A Ali Muna H. Shareef Abeer Q. Kadhim
DOI:
https://doi.org/10.59658/jkas.v4i1.73Keywords:
العربيةAbstract
This experiment was conducted in accordance with randomized complete design (C . R . D ) in AL- Hosseinieh date palm Station of Karbala during the season of 2015 to study the effect of foliar spray with three levels of Humic acid (0 and 9 and 18 g.L-1) and three levels of compound fertilizers (0, 4 and 8 ml.L-1) on date Palm ، cultivar Maktoom. The off shoots were sprayed at three interval in tenth day of march , may and they were also sprayed with 0.2 % urea one day before each spraying . Results were collected in mid-December. Results showed that Humic acid at 18ml.L-1 increased the chlorophyll a compared to Control , also Humic acid addition was superior increasing nitrogen, phosphorus, potassium and total protein in the leaves .
The compound fertilizers (N.P.K) in concentration (8 g.L-1) significantly increased the chlorophyll a and b and concentrations nitrogen , phosphorus , potassium and total protein in the leaves .
The interactions between concentration 18 ml.L-1 of Humic acid and 8 g.L-1 of compound fertilizers ( N.P.K ) significantly increased the chlorophyll a and b and concentrations nitrogen, phosphorus, potassium and total protein in the leaves on all other interaction .
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