R. Rodriguezkabana et al., ROTATIONS WITH COASTAL BERMUDAGRASS, COTTON, AND BAHIAGRASS FOR MANAGEMENT OF MELOIDOGYNE-ARENARIA AND SOUTHERN BLIGHT IN PEANUT, Journal of nematology, 26(4), 1994, pp. 665-668
The efficacy of coastal bermudagrass (Cynodon dactylon) as a rotation
crop for control of root-knot nematode (Meloidogyne arenaria) in 'Flor
unner' peanut (Arachis hypogaea) was evaluated in a 3-year field trial
. Coastal bermudagrass-peanut rotation (CBP) was compared with peanut
monoculture without nematicide (P-) and peanut monoculture with aldica
rb (P+). The performance of CBP was also compared with 'Pensacola' bah
iagrass (Paspalum notatum)-peanut (BP), and 'Deltapine 90' cotton (Gos
sypium hirsutum)-peanut (CP) rotations. Each rotation crop was grown f
or 2 years (1998, 1992) and peanut was planted without nematicide the
third year (1993). In contrast with peanut, the alternate crops of bah
iagrass, bermudagrass, and cotton did not support M. arenaria populati
ons. In 1993, the lowest numbers of M. arenaria second-stage juveniles
(J2) in soil were in plots with CP and BP; these rotations resulted i
n the highest peanut yields. CBP failed to increase peanut yield and r
esulted in the highest population densities of M. arenaria J2. In 1993
, aldicarb reduced J2 densities in the soil but did not increase peanu
t yields. Rotations of BP and CP reduced incidence of southern blight
(Sclerotium rolfsii) in peanut, but neither CBP nor aldicarb affected
the disease.