INFLUENCE OF FERTILIZER PLACEMENT UNDER PLASTIC ON YIELD AND NUTRIENT UPTAKE OF TRANSPLANTED TOMATOES.

in HortScience

Fertilizer placement under plastic was studied on 2 tomato cultivars (`TI-130' and `Floradade') during 1989. Treatments were 1, 2 or 3 increments of fertilizer broadcast, banded, broadcast/banded of banded with 1 or 2 sidedressings and a check. Fertilizer applied was NPK at 135-90-84 kg·ha-1 as a ammonium nitrate, triple superphosphate and muriate of potash, 10cm to each side of the plants and 10cm deep. Vine, total, marketable and early yields for lower rates either Br or Ba were as good as those of the full rate Br or Ba with 2 sidedressings (Ba/SD2). Leaf N, P, K, Ca and Mg for `TI-130' were not affected by placement. The Ba/SD2 placement Increased leaf N for `Floradade' but leaf Ca was reduced in all treatments vs the check. Leaf Mn was increased markedly by placements involving broadcasting at all rates.

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