TH25399Y - Methods for extracting substances from eucalyptus for weed control. - Google Patents

Abstract

The extraction process for eucalyptus extract for weed control involves the following steps: Eucalyptus leaves are chopped, dried, and then finely ground. The ground leaves are then soaked in water at a ratio of 1:2 by weight to volume (W/N). The extracted water is then vaporized using a centrifuge to obtain eucalyptus leaf extract. A concentration of 20 g/L of eucalyptus leaf extract showed the highest inhibitory effect (100%) on the growth of seedlings of three weed species (barnyard grass, rice, weeds, and spinach).

Claims (1)

------19/02/2568------(OCR) OCR 10KL 1. The process of extracting eucalyptus extract for weed control involves the following steps: Step A. Select complete eucalyptus leaves, removing any damaged parts. These are then chopped and dried in an oven at 60°C for 3 days. The dried leaves are then weighed at 1,000 grams. Step B. The dried eucalyptus leaves from Step A are then finely ground in a blender. Finally, they are soaked in purified water. The ratio of dried eucalyptus powder to water is 1:2 by weight to volume (W/V), meaning 1,000 grams of dried eucalyptus powder to 2,000 milliliters of water. The mixture is left to stand for 3 days. Afterward, the eucalyptus leaf extract is filtered twice using cheesecloth until the extract is obtained. Step C: The solvent from the extract obtained in step B is evaporated using a centrifugal evaporator. Step D: The resulting eucalyptus leaf extract is stored in a dark glass bottle and sealed tightly. 1. The process of extracting eucalyptus extract for weed control involves the following steps: a. Select complete eucalyptus leaves, removing any damaged parts. These leaves are then chopped and dried at 60°C for 3 days. The dried leaves are then weighed to 1,000 grams. b. The dried eucalyptus leaves from step a are finely ground using a centrifuge. They are then soaked in pure water at a ratio of 1:2 by weight to volume (W/V), meaning 1,000 grams of dried eucalyptus powder to 2,000 milliliters of water. This mixture is left for 3 days. Afterward, the soaked eucalyptus leaf extract is filtered twice using cheesecloth to obtain the eucalyptus leaf extract. c. The solvent from the eucalyptus leaf extract obtained in step b is evaporated using a centrifugal evaporator. d. The resulting eucalyptus leaf extract is stored in amber glass bottles. And close the lid tightly. The eucalyptus leaf extract obtained was most effective in inhibiting the growth of seedlings of three weed species (barnyard grass, weed rice, and spinach) tested using different seedling inhibition concentrations (0, 5, 10, 15, and 20 g/L). It was found that the eucalyptus extract at a concentration of 20 g/L could inhibit the growth of seedlings of the three weed species (barnyard grass, weed rice, and spinach) the most (average percentage of weed seedling inhibition equal to 100%).