Bibliographic citations
Salazar, R., (2025). Fertilización con guano de Isla y frecuencia de cosecha en cultivares de Acelga (Beta vulgaris L. var Cicla) [Universidad Nacional Agraria La Molina]. https://hdl.handle.net/20.500.12996/6879
Salazar, R., Fertilización con guano de Isla y frecuencia de cosecha en cultivares de Acelga (Beta vulgaris L. var Cicla) []. PE: Universidad Nacional Agraria La Molina; 2025. https://hdl.handle.net/20.500.12996/6879
@misc{renati/1114333,
title = "Fertilización con guano de Isla y frecuencia de cosecha en cultivares de Acelga (Beta vulgaris L. var Cicla)",
author = "Salazar Zuñiga, Rocio Nieves",
publisher = "Universidad Nacional Agraria La Molina",
year = "2025"
}
Island guano is presented as a viable nutritional alternative for the organic production of chard, allowing quality biomass to be obtained according to the appropriate harvesting frequency. The objective of the present study was to evaluate the effect of island guano fertilization and harvest frequency on the yield and quality of two chard cultivars in organic production. A split-plot design with factorial arrangement and repeated measurements over time was used. Two guano doses (0 and 1 t/ha) were applied in the main plots and cultivars (Fordhook Giant and Prius) and harvest frequencies (7, 14 and 21 days) were assigned in the subplots, with three completely randomized blocks. Morphophysiological (plant height, number, length, width, area and leaf dry matter), production (yield) and abiotic (soil pH and electrical conductivity) variables were evaluated. The morpho-physiological variables showed statistically significant differences, with the Fordhook Giant cultivar standing out with the 1 t/ha dose in most of the variables. A statistically significant difference was obtained in the interaction of the factors on the logarithm of the weight of leaves harvested, reflecting the highest average yields with the 1 t/ha dose and harvest frequencies of 14 and 21 days for both cultivars, being at 14 days where leaves of better commercial quality were obtained. As for the soil, pH did not show statistically significant differences, but electrical conductivity was moderately higher with the dose of 1 tn/ha. Consequently, fertilization with island guano at a dose of 1 t/ha is the most effective option for both cultivars under a harvest frequency of 14 days.
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