Ridomil MZ (Metalaxyl 8% + Mancozeb 64%), applied in soil at the rate of 3g l−1 was seadily absorbed by tomato plant roots and at 1 d, 11.87 mg kg−1 metalaxyl accumulated in the roots, 5.80 mg kg−1 in the stem and 1.25 mg kg−1 in the leaves. With time, the concentration of the fungicide decreased in the roots and stem but increased in the leaves, resulting in its maximum concentration on the 4th day. Fungicide residues persisted in the leaves and roots even after 30 days. Metalaxyl residues in soil reduced at a half life of 18 d to persist for over 30 days.
Metalaxyl, uptake, persistence, translocation, systemic fungicide, tomato
