Influence of humic acid on increase yield of plants and soil properties
Journal Title: International Journal of Farming and Allied Sciences - Year 2014, Vol 3, Issue 3
Abstract
Humic acids are heterogeneous, which include in the same macromolecule, hydrophilic acidic functional groups and hydrophobic groups. A distinction on the effects of HAs should be made between indirect and direct effects on plants growth. Under water stress, foliar fertilization with humic molecules increased leaf water retention and the photosynthetic and antioxidant metabolism. Several studies showed that humic acid increase root length, root number and root branching. Stimulation of root growth is generally more apparent than shoot growth (Nardi, 2002).
Authors and Affiliations
Mohammad Fahramand, Hossein Moradi, Mohsen Noori, Alireza Sobhkhizi, Mohammad Adibian, Shila abdollahi and Khashayar Rigi
Keywords
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