Effectiveness of napropamide herbicide controlling weeds on a golf course in Tropical Indonesia

Abstract

Weeds existence interferes with the quality, aesthetics, and growth of golf course grass. Napropamide is a herbicide used to control broadleaf and grass weeds. Therefore, field experiments were employed during 2021 at Bandung Giri Gahana Golf Course, Jatinangor District, Sumedang Regency, West Java to determine effects of applying the herbicide in controlling weeds and on the growth of golf course grass. The experiment was laid out in randomized block design was used with six treatments, each of which was replicated four times. The treatments included manual hand weeding, a control, and different doses of Napropamide 50%, namely 6.75, 9, 11.25, and 13.5 kg/ha. The results showed that the herbicide Napropamide 50% with the dose of 6.75 kg/ha until 13.5 kg/ha were effectif to control grass weeds such as Eleusine indica, Panicum repens, Digitaria ciliaris and broad leaves weeds such as Cleome rutidosperma, Amaranthus viridis, Portulaca oleracea, up to 12 weeks after herbicide application without causing toxicity to golf course grass.