RESEARCHS ON THE EFFECTS OF THE MARIGOLD (Tagetes spp.) ON THE MANAGEMENT OF ROOT-KNOT NEMATODES (Meloidogyne incognita) IN NURSERIES

Year 2018, Volume: 2 Issue: 2, 56 - 61, 08.12.2018

Neriman Kurt Mehmet Atilla Aşkın

Abstract

This study aimed to determine the effects of marigold
(Tagetes spp.) on the root-knot nematode, which are causing high damages in the
nurseries. In present study, different species of marigold were tested at
different plant intensity. Totally 11 varieties of marigold were used in the
present study, five from Tagetes erecta (Marvel Yellow, Marvel Orange, Taishan
Gold, Taishan Orange and Taishan Yellow) and six from Tagetes patula (Bonanza
Bee, Bonanza Yellow, Durango Bolero, Durango Flame, Durango Red and Durango
Tangerine). Each treatment was tested with 10 replications and the experiments
were designed with the completely randomized block design. Results showed that
plant density has a significant effect on the galls index of root-knot
nematodes. The highest galls index was determined from the marigold
applications with only flowers and the lowest (no) galls index was noted from
the marigold applications with green parts of the plants. It can be concluded
from the results that the using of marigold in crop rotation may significantly
reduce the damages caused by the root-knot nematodes.

Keywords

: nurseries, biological control, nematode management, plant parts

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