Pergeseran Jenis Gulma Akibat Perlakuan Bahan Organik pada Lahan Kering Bekas Tanaman Jagung (Zea maysL.)
and Borreria laevis. After the organic matter treatments there were 22 weeds species, which classified into 17 genus and 11 families, floristically. The main weeds were Richardia brasiliensis, Borreria alata, and Eleusine indica. The weeds diversity index was less to medium with the point of 1.33 to 1.85. The community coefficient between before and after organic matter treatment was < 30% , while the average of communities coefficient between organic matter treatments above 75%.
Keywords: diversity, organic matter, shifting species, weeds
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