Growth, yield and chemical composition of eggplant ‘Ciça’ under potassium fertigation

Kamila de Almeida Monaco ,Aline Baptista Borelli ,Guilherme Augusto Biscaro ,Anamari Viegas de Araujo Motomiya ,Patricia dos Santos Zomerfeld

doi:10.24294/th.v3i1.1781

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Growth, yield and chemical composition of eggplant ‘Ciça’ under potassium fertigation

Kamila de Almeida Monaco

Aline Baptista Borelli

Guilherme Augusto Biscaro

Anamari Viegas de Araujo Motomiya

Patricia dos Santos Zomerfeld

Trends in Horticulture 2020, 3(1), 17-23; https://doi.org/10.24294/th.v3i1.1781

Submitted：08 Jan 2020

Accepted：02 Mar 2020

Published：18 Mar 2020

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Abstract

The objective of this work was to evaluate the effect of potassium concentrations applied via fertigation on the growth, yield and chemical composition of eggplant ‘Ciça’ in a distroferric red Latosol. The treatments were composed of five concentrations of K₂O (0, 36, 72, 108 and 144 kg ha^-1 supplied via fertigation), using potassium chloride as a source, divided into six applications. The irrigation system was of the drip type and irrigation management was done via a “Class A” evaporometer tank. Harvest started at 62 days after transplanting (DAT) and lasted for five months. The variables evaluated were: plant height, number of leaves, fresh fruit mass, number of fruits per plant, yield per plant, productivity and classification of the fruits according to their length and diameter. At 85 DAT, fruit were collected for characterization as to the percentage of lipids, proteins and fibers. Although the potassium fertigation in cover provided a reduction in the production and productivity, the concentrations of 36 kg ha^-1 and 72 kg ha^-1 of K₂O applied via fertigation, increased the physical-chemical characteristics of the fruits.

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References

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