Cytotoxicity Activities of Ethanol Extract of Hooks Uncaria tomentosa West Kalimantan

Uncaria tomentosa is a member of the plant family Rubiaceae. It has been used as medicinal plants in West Kalimantan. The cytotoxic of ethanol extract from the hooks of U. Tomentosa was determined. This study used Brine Shrimp Lethality Test (BSLT) method with solution concentration 1,000; 5,000 and 10,000 ppm. The extract has LC50 values of 21,754 ppm. It is indicated the extract not toxic. This extract is potent to be used as drugs.

Application of Cow Manure and Trichoderma sp. on Ex-mining Land to Improve Soil Chemical Properties and Fragrant Lemongrass (Cymbopogon nardus L.) Growth

Ex-mining land has low productivity due to poor soil quality. One way to improve the quality of the soil is by providing organic materials, soil microbes, and plants that are known to be adaptive, such as fragrant lemongrass. The study aimed to determine the effect of the use of manure and Trichoderma sp. in improving soil chemical properties on ex-mining land. This research was conducted in Nagari Pala Luar, Koto Tujuh District, Sijunjung, and the Soil Laboratory, Agriculture Faculty, Universitas Andalas. The design used was Randomized Block Design (RBD) with 5 treatments (A = control / without cow manure and Trichoderma, B = 144 g cow manure + 14.4 gr Trichoderma sp. / planting hole, C = 288 g cow manure + 28, 8 gr Trichoderma sp. / planting hole, D = 432 g cow manure + 43.2 gr Trichoderma sp. / planting hole, E = 576 g cow manure + 57.6 g Trichoderma sp. / planting hole) and 3 replications. The results showed the use of cow manure and Trichoderma sp. able to increase nutrient content and of fragrant lemongrass growth in ex-mining land by giving 432 g cow manure + 43.2 gr Trichoderma sp. / planting hole.