Portal de Periódicos da CAPES

Use of a Resistant Pepper as a Rotational Crop to Manage Southern Root-knot Nematode

1998; American Society for Horticultural Science; Volume: 33; Issue: 4 Linguagem: Inglês

10.21273/hortsci.33.4.716

2327-9834

Judy A. Thies, Joachim D. Mueller, Richard L. Fery,

Plant Disease Management Techniques

A 3-year field study was conducted at Blackville, S.C., to evaluate the potential of using resistant pepper ( Capsicum annuum L.) cultivars as a rotation crop for managing the southern root-knot nematode [ Meloidogyne incognita (Kofoid and White) Chitwood]. The experiment was a split-plot with main plots arranged in a randomized complete-block design. In 1993, the entire experimental site was infested with M. incognita by inoculating a planting of susceptible PA-136 cayenne pepper with eggs of M. incognita race 3. In 1994, the main plots were planted to either highly resistant `Carolina Cayenne' or its susceptible sibling line PA-136. In 1995, `Carolina Cayenne' and the susceptible bell cultivars California Wonder and Keystone Resistant Giant were grown as subplots in each of the original main plots. `Carolina Cayenne' plants were unaffected by the previous crop. Previous cropping history, however, had a significant impact on the performance of the bell cultivars; the mean galling response was less ( P < 0.01) and the yield was 2.8 times greater ( P < 0.01) in the main plots previously cropped with `Carolina Cayenne' than in those previously cropped with PA-136. These results suggest that resistant pepper cultivars have considerable merit as a rotation crop for managing M. incognita infestations in soils used for growing high-value vegetables.