Nematicide Effect of Various Organic Soil Amendments on Meloidogyne ethiopica Whitehead, 1968, on Potted Vine Plants

Five organic soil amendments were evaluated for their nematicide effect root-knot Meloidogyne ethiopica Whitehead, 1968, on potted Vitis L. var. Chardonnay plants. The amendments included two composts: Compost A made with tea ( Camellia sinensis (L.)) residues, broiler litter and grape pomace; Compost B made with residues, rachis and grape pomace; and separately dried tea, grape pomace and broiler litter. These amendments were either or applied as cover to the substrate in 5 L pots at the of spring. A chemical treatment with the nematicide and a control with substrate only were added for. The assay was composed of 11 treatments with six, with a grape plant as experimental unit. Seven months, the assessment of the treatments was carried out based on number second stage juvenile, nodules, eggs per root gram and reproductive. Fresh aerial and root plant weight were also measured. The treatment presented the lowest final population of M.. When evaluating the nematicide action of the organic: compost A soil-incorporated and both grape pomace and solid tea residue as covers obtained low reproductive indexes, similar to chemical treatment and control (P ≤ 0.05). No differences in fresh weight were determined. However, the chemical treatment the smallest root mass as compared to compost B and solid dry residues, both as cover.