Two integrated weed management experiments on tomatoes and peppers were conducted at the Fortuna Experiment Substation, Juana Díaz, P. R., in 1985-86. In the tomato experiment, the highest marketable yield and net income was obtained from plastic mulching in combination with handweeding treatment. In the pepper experiment, the highest yield and net income was obtained from plastic mulching in combination with postdirected paraquat. On the basis of yield and net income data the most suitable system for local vegetable growing was integrated weed management based on plastic mulching. The addition of a second weed control component, with either chemicals or handweeding, depends chiefly on economic considerations.
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