Identification of Organic Mulch Effects on Weed Diversity and Shallot (Allium ascalonicum L.) Productivity

Shallot cultivation in North Kalimantan has not been implemented properly. This is because the soil in North Kalimantan is acid so the yield of shallot is low. One effort to increase soil pH using organic mulch. Organic mulch has the function of maintaining soil moisture and inhibiting the growth of weeds so that shallot cultivation can grow well. This study aims to determine the effects of organic mulch on weed diversity and yield of shallot. The study was conducted using Randomized Block Design with the treatment without mulch (P0), Imperata cylindrica mulch (P1), Cyperus rotundus mulch (P2), Eleusine indica mulch (P3) and Cynodon Dactylon mulch (P4). The results showed that the parameters of shallot using Cyperus rotundus mulch and Eleusine indica mulch increased the number of tubers is 11.57%. In this study, species of weeds had the highest a on each treatment were species Elusine indica on without mulch (21.93%), Cyperus rotundus mulch (54.26%), and Eleusine indica mulch (28.79%). Then, species Borreria latifolia on Imperata cylindrica mulch (28.79%), and species Cynodon dactylon on Cynodon dactylon mulch (47.21%).