N. Acosta et al., MUCUNA DEERINGIANA SOIL INCORPORATED VS N ON-INCORPORATED AND YIELD IN SUBSEQUENT PLANTINGS OF TOMATO, BEANS OR CORN, The Journal of agriculture of the University of Puerto Rico, 79(1-2), 1995, pp. 65-74
The effect of velvet bean Mucuna deeringiana plowed under three months
after planting, and non incorporated (cut for forage three months aft
er planting), on the nematode population (Meloidogyne incognita, races
1 and 4 and Rotylenchulus reniformis) and on yield of tomato, dry bea
ns or corn was studied for two years (1989-1990) in the same experimen
t at the Agricultural Experiment Station at Isabela. A two-year rotati
on program with Mucuna plowed into the soil, followed by tomato, was t
he most effective control for the root knot and reniform nematodes. Th
is method increased tomato yield 176% over that of continuous tomato.
The root gall index in tomato roots significantly decreased in all plo
ts previously planted with Mucuna. Nonincorporated Mucuna did not affe
ct tomato yield. Soil incorporated as well as non-incorporated Mucuna
increased dry bean yields (212% and 141%, respectively) in 1989 as com
pared to yield in monoculture. Mucuna did not affect corn yield.