EFFECT OF INTERCROPPING ON NEMATODES ASSOCIATED WITH GRAPEVINES IN MINIA GOVERNORATE , EGYPT.

Abstract

Intercropping with maize, sunflower, sesame, soybean, hot pepper and eggplant in a grapevine orchard in Minia Governorate show reducing effect on nematodes associated with grapevine roots. During 2018, Meloidogyne spp. significantly reduced with hot pepper, eggplant and sesame by 87, 85 and 81 %, respectively. Maize and sunflower reduced this nematode by 77 and 51%. Soybean reduced this nematode by 34 %. Pratylenchus thornei reduced by sesame, hot pepper, eggplant, maize, soybean and sunflower recording 82, 81, 78, 71, 68 and 54 %, respectively. Trichodorus spp. reduced by 80 and 12 % with sesame and sunflower. Spiral nematode reduced by 80% and 11% with hot pepper and maize. Hoplolaimus spp. reduced by 79% and 42 % with sesame and maize. Citrus nematode reductions were 3, 4, 24, 2, 20 and 26 % with maize, sunflower, sesame, soybean, eggplant and hot pepper, respectively. In 2019 Meloidogyne spp. reduced with hot pepper, eggplant and sesame plants by 89, 86 and 83 %, respectively. Soybean reduced this nematode by 40 %. Pratylenchus thornei reduced by 86, 84, 80, 75, 73 and 58%, with sesame, hot pepper, eggplant, maize, soybean and sunflower respectively. Trichodorus spp. reduced by 82 and 15 % with sesame and sunflower. Citrus nematode reduced by 83% and 14% with hot pepper and maize. Hoplolaimus spp. reduced by 80% and 46 % with sesame and maize. Reductions in citrus nematodes were 4, 3, 25, 0, 22 and 30 % with maize, sunflower, sesame, soybean, eggplant and hot pepper, respectively.