KERAGAMAN DAN POTENSI PEMANFAATAN JENIS GULMA PADA AGROFORESTRI JATI (Tectona grandis L. f.) dan JALAWURE (Tacca leontopetaloides (L.) Kuntz)

Abstract

Experiment of jalawure (Tacca leontopetaloides) cultivation by agroforestry system under teak plantations was conducted by Agroforestry Technology Research and Development Institute in cooperation with farmer communities in Cijambe Village, Cikelet District. The applied silviculture treatment such as tillage, manure application, and plant spacing stimulate weed growth and potentially disturbing the jalawure growth. The objectives of the study were to determine the composition, diversity and potential utilization of weeds on teak-jalawure agroforest. The method used was vegetation analysis for ground cover by quadratic method with laying of 1m x 1m plots repeated 3 times and interview with key informants. The study was conducted in April 2017 at Cikelet District, Garut Regency. The study identified 26 weed species from 16 families on teak- jalawure agroforest field. The dominant weed species was Axonopus compressus of the Poaceae family. The diversity index was medium (H' 1,03-1,64,) the richness index was low (R'<3) and the evenness index was medium (E' 0,43-0,64). The similarity index of weed on agroforestry of teak-jalawure higher (IS 0,50-0,58) then it on teak plantation without jalawure (IS 0,32-0,43). Of the 26 weed species, 19 species are suitable for fodder (10 species), foods (3 species) and traditional medicine (6 species).