IMPACT OF PRE-PLANTING WEED CONTROL ON DIVERSITY NEMATODES IN THE RHIZOSPHERE OF CORN PLANTS

Abstract

This study aims to determine the impact of several pre-planting weed control methods on thediversity of plant parasitic nematode species and their population levels in the rhizosphere of corn crops.Theresearch was conducted from March to June 2024. On farmer's land in Binuang, Tapin Regency. The landobserved is land No tillage + glyphosate, No tillage +sulphosate, Minimal tillage (on tractor), Minimaltillage (on tractor) + Oxadiazon, Minimal tillage (on tractor) + Butachlor, Conventional tillage (hoeing),Control (natural / no tillage).Observations based on the results of soil samples taken when the corn cropwas harvested. The soil samples wereExtraction using a modified Baerman funnel (Dropkin 1991). Resultsof extraction of parasitic nematodes found identified based on morphological characteristics up togenus.Identification of nematodes refers to the books: Pictorial Key to Genera of Plant Parasitic Nematodes(Maiet al.1975). The results of research on the impact of pre-planting weed control on nematode diversityfrom corn rhizosphere samples found 16 nematode genera, Criconemella, Ditylenchus, Hemicycliophora,Hemicycl, Heterodera, Hirschmanniella, Longidorus, Meloidogyne, Paratylenchus, Pratylenchus,Psilenchus, Rotylenchus, Trichodorus, Tylenchorhynchus, Tylenchulus, Tylenchus, and there are variationsin the genus and population of nematodes in each soil sample.