تأثير التسميد باليوريا والرش بحامض الهيوميك Humic Acid في نمو الخضري لأشجار الليمون الحامض المحلي Citrus lemon
2019, Volume 2018 المؤتمر الدولي الزراعي الثالث, Issue عدد خاص, Pages 387-391
Abstract
This study was carried out in the orchard of horticulture and landscape design department - College of Agriculture - University of Kirkuk - Iraq during The period Sep. 2017 to Jul. 2018 to study effect of urea fertilizing with three levels (0 , 50 and 100) g.tree-1 and humic acid spraying with three levels (0 , 2 and 4)g.L-1 on some growth characteristics of lemon seedlings. The results in this experiment could be summarized as:1-The 50g.tree-1 of urea had significant increase on all the growth characteristics 2-The 4g.L-1 of humic acid led to significant increase on ( plant height, number of leaves and branches, branches height and diameter, leaf area and chlorophyll content) and the 2 and 4 g.L-1 hasn’t have significant increase in stem diameter.3-The interaction of treatments had significant increase in 50g.tree-1 urea and 4g.L-1 humic acid on all studded characteristics.
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