Abstract
ABSTRACT The effect of ram horn hydrolyzate (RHH) application on the growth of bean plants (Phaseolus vulgaris cv. Aziziye-94) was investigated. RHH produced by acid hydrolysis contained protein, nitrogen, ash, some minerals, sugars, lipid and amino acids. RHH contained sufficient concentrations of mineral nutrients and amino acids, especially glutamic acid and proline. The effect of different concentrations of RHH (0.5%, 1%, 2.5% and 5%) on plant response (weight and the number of leaves, fresh and dried weight of plants, and height of shoots) was determined. In addition, contents of chlorophyll a and b, total chlorophyll and proline were also determined as an indicator of physiological response in the leaves. Treatments of 0.5%, 1% and 2.5% RHH significantly stimulated plant growth and enhanced pigment and proline contents, compared with their controls. The best stimulatory effect on plant growth was found at 2.5% RHH. It is concluded that RHH application from horn waste can be technically feasible for improving plant growth and productivity in poor-sandy soils and hydroponic systems.
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