Evaluation of the growth and quality of the "Ife Plum" tomato as affected by boron and calcium fertilization
1992
Oyewole, O.I. | Aduayi, E.A.
A local variety of tomato (Lycopersicon esculentum, Ife plum cv. 51691) was grown in soil culture for 5 months and treated with B at concentrations of 0, 1, 2, 4, 8, and 16 ppm as H3BO3, and Ca at 0, 40, 80, and 160 ppm as CA(OH)2. A significantly positive correlation was established between organic matter and water-soluble B (r = 0.970), while the relationship between pH and B was negative (r = -0.490). Application of B at 2 ppm improved all growth parameters studied. Boron application higher than 2 ppm, induced leaf chlorosis and later necrosis of nodes and roots. Fruit yield correlated positively with soil-B, stem diameter and floral number (r = 0.597, r = 0.650 and r = 0.812, respectively). Soil- and plant-B were positively correlated (r = 0.790). Calcium when applied singly at higher levels increased total chlorophyll content of the leaf. Tomato fruit yield was optimum at B:Ca treatment concentration of 2 ppm B (4.48 kg/ha B) and 160 ppm Ca (358.4 kg/ha Ca), corresponding to a B:Ca fertilizer ratio of 1.80.
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