Yield dynamics of tomato in relation of plant growing method and NAA application [total fruit yield and number; marketable fruit yield and number; marketable fruit weight]
1989
Malash, N.M. (Monoufeia Univ., Shebein El-Kom (Egypt). Faculty of Agriculture)
In 2-year trials under plastic greenhouse conditions, tomato cv. Moneymaker was either trained and pruned to one stem (6.7 plants/m2) or left to grow without pruning (2 plants/m2). Pruned plants gave the higher early yield i.e. yield harvested in March, per both m2 and plant, compared with unpruned plants. Treatments with NAA at 50 ppm also increased early yield particularly when applied on flower cluster than whole plant. Most of yield harvested in March was marketable. In April, the yield of the two plant growing methods considerably increased than that of March. Non-marketable fruits (less than 25 g) also increased. NAA treatments, in addition, enhanced the proportion of small fruits especially when applied on whole plant. Unpruned plants produced most of their yield (about 55.6%) in April, however, yield/m2 of these plants was significantly lower than those pruned. In May, the yield ended to decrease compared to that of April. The benefit of NAA application on the whole plant was observed late (May) in the harvesting season. Average fruit weight decreased gradually from March to May and pruned plants gave the heavier fruits. The highest total and marketable yield/m2 throughout the harvest seasons was produced by single-stem pruned plants with NAA applied on flower clusters
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