Potassium Fertilization for Higher Flowering and Fruit Yield in ‘Magallanes’ Pummelo (Citrus maxima)

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Alminda Magbalot-Fernandez
Constancio C. Deguzman

Abstract

This study aimed to determine the influence of Potassium (K) fertilization on the flowering and fruit yield of 13-year old ‘Magallanes' pummelo [Citrus maxima (Burm. ex Rumph.) Merr.] trees.  The experiment was conducted at South Davao Corporation (SODACO) farm, Davao City, Philippines for 12-month duration. Five treatments with increasing K levels were applied per tree: control, no K, 150 g K basal, 225 g K basal, and 225 g K basal + foliar application. Flowering, fruit set and yield of pummelo were enhanced by higher K rates. Flowering was increased by 4 times while fruit set by 86-100%. Fruit number was increased by 7 times, weight per fruit by 22-26%, and yields up to 9 times with 100% (return of investment) ROI on trees applied with 225 g K rates. The results of the study indicated the important role of K in improving the flowering, fruit yield and income of ‘Magallanes' pummelo.

Keywords:
Flowering, fruit yield, potassium, pummelo, foliar, fertilization

Article Details

How to Cite
Magbalot-Fernandez, A., & C. Deguzman, C. (2019). Potassium Fertilization for Higher Flowering and Fruit Yield in ‘Magallanes’ Pummelo (Citrus maxima). Asian Journal of Agricultural and Horticultural Research, 3(4), 1-8. https://doi.org/10.9734/ajahr/2019/v3i430004
Section
Original Research Article

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