Efecto de la aplicación foliar de boro, zinc y calcio en la producción de semilla de cebolla.

GABRI, C; IBAÑEZ, A. A.; GUELL, J. M.; GALMARINI, C.R.

Horticultura Argentina

Asociación Argentina de Horticultura

Lugar: La Consulta; Año: 2020 p. 6 - 16

Onion seed represents a high percentage of the total economic value of vegetable seeds marketed worldwide.  In Argentina, onion seed production iscarried out in San Juan and Mendoza, where open-pollination (OP) cultivars and firstgeneration hybrids are used.  An OP varietyhas good seed yield, but the yield of hybrid seeds is erratic and considerably lower. Seed yield and quality depends, among other factors, on fertilization.  Nutrients such as boron,z inc and calcium are essential for the growth and development of  plants. Foliar fertilization allows the supplyof nutrients to specific organs when the growth stage, internal demand andenvironmental conditions limit  their delivery. The objective of this study was to evaluate the effect of the foliar application of boron, zinc and calcium, on the yield and quality of onion seed. The study was conducted on cv. Angaco INTAin a commercial farm located in the department of Pocito, San Juan.   A completely   randomized   design with  four   replications was   used. Three doses of boron, calcium and zinc, plus a combination of the three nutrients and the control were evaluated. The foliar application of boron,both   simple   and combined with zinc and calcium, producesa greater fruit set, while calcium improves germination. No significant effectson seed yield were observed.