TThe Effect of Barnyard Manure and Tea Compost Applications on Hemp Yield Parameters

Abstract

Cannabis (Cannabis sativa L.) is an annual plant originating from Central Asia, which has been cultivated in different climatic conditions for many years and used for fiber, seed and medical purposes. Organic wastes such as barnyard manure and tea compost are used in agriculture to improve soil and increase productivity, agricultural sustainability and reduce environmental pollution. In this study, the yield and quality values of hemp plants were examined by applying different ratios of barnyard manure, tea compost, tea compost-barn manure and soil alone to hemp plants before planting. Barn manure and tea compost used in the experiment were calculated and applied as % based on soil weight.  In each application (barnyard manure, tea compost and tea compost + barnyard manure), growing media were obtained by using different ratios of 1%, 2%, 3% and 4%. The project was carried out in the greenhouse conditions of Yozgat Bozok University Research and Application Area. The experiment was established in 2022 according to the Coincidence Plots Experimental Design with 4 replications. In the project, Finola hemp variety obtained from Hemp Research Institute was used as material. According to the results obtained in the study; average values of plant height were 79.25-225.25 cm, average values of technical stem length were 34.00-114.75 cm, average values of stem diameter were 1.05-5.53 mm, average values of fiber yield were 47.63-294.88 kg/da, average values of seed yield were 62.44-248.31 kg/da, average values of biological yield were 875.00-4500.75 kg/da, and oil content values varied between 26.02-30.26%. In the study, barnyard manure applications provided the highest yield, while the lowest yield was observed only in tea compost applications. As a result, barnyard manure gave the most effective result in terms of hemp yield.