Foliar application of humic acid, it's components and effect on grain yield in Sorghum
Journal Title: Journal of Research in Ecology - Year 2018, Vol 6, Issue 2
Abstract
A field experiment was conducted at the experimental fields in the College of Agriculture, University of Baghdad during spring and autumn seasons of 2016 to study the effect of humic acid concentrations (0, 1, 2 and 3 cm3.L-1) and three stages of foliar application (vegetative growth, booting and 25% flowering) on grain yield and its components of Sorghum (CV. Bohooth.70). The experiment was applied using RCBD arranged in split plots with three replications. Foliar application stages were used as main-plot, while humic acid concentrations were used as sub-plot. The highest grain yield in both season was 4.395 and 5.213 ton.ha-1 respectively when plants were sprayed at the concentration of 3 cm3L-1. Foliar application at the stage of vegetative growth gave highest mean in plant height, leaf area, biological yield, grain weight head-1, number of grain.head-1 and grain yield (ton.ha-1). The highest grain yield in spring and autumn seasons was 4.120 and 4.928 ton.ha-1 respectively by foliar application at vegetative growth. The results showed a significant interaction between application stages and humic acid concentrations in means of grain yield. The higher grain yield of 6.070 and 5.380 ton.ha-1 were obtained when Sorghum plants were sprayed with humic acid at the concentration of 3 cm3.L-1 in vegetative growth stage in spring and autumn seasons respectively
Authors and Affiliations
Al-Beiruty RZ, Finekher BM, Khrbeet HK
Keywords
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