rtilizante nitrogenado de liberação controlada nas características agronômicas... EFICIÊNCIA DO FERTILIZANTE NITROGENADO DE LIBERAÇÃO CONTROLADA NAS CARACTERÍSTICAS AGRONÔMICAS E PRODUÇÃO DE SEMENTES DO QUIABEIRO

Alves, Pablo Fernando Santos; Kondo, Marcos Koiti; Rodrigues, Gabriel Belfort; Pegoraro, Rodinei Facco; David, Andréia Márcia Santos de Souza; Alves, Igor Santos

doi:10.21206/rbas.v8i2.465

Cited by 1 publication

(1 citation statement)

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“…This result allows to infer the advantage of using controlled-release fertilizers since, compared to conventional fertilizers, there is greater practicality in application and rationing in the application cost being, therefore, an important technology for the management of fertilization for coffee growers of the Vale do Ribeira. As stated by Alves et al (2018), the use of slow-release fertilizers makes it possible to reduce the doses to be used, as well as the application of a blend formed by the mixture of fertilizers makes it possible to reduce losses, especially for nitrogen (Chagas et al 2016).…”

Section: Discussionmentioning

confidence: 99%

Increased efficiency fertilizers in arabica coffee growth in Vale do Ribeira, SP

Carvalho,

Godoy,

Silveira

et al. 2024

Biosci. J.

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Controlled-release fertilizers have been increasingly used. This study aimed to evaluate and adapt new technologies applied via soil for sustainable coffee production, in order to generate information that contribute to the technical innovation of the crop for the Vale do Ribeira region. The experiment was set at UNESP, in Registro – SP. The experimental design was in randomized blocks. The experiment consisted of eight treatments with four replications, with plots of six plants. Four doses (200, 300, 400 and 500 kg ha-1) of a mixed fertilizer 20-05-20 were used, with controlled release in six months, intended for coffee trees in formation and production, compared to the dose of 500 kg ha-1 of the conventional mixed fertilizer 20-05-20, ammonium sulfate and calcium nitrate with boron, in addition to a control treatment, which did not receive NPK fertilization. The cultivar used was ‘Obatã IAC 1669’ in 3.0 x 0.6 m spacing. The following characteristics were evaluated: number of plagiotropic branches, number of nodes of plagiotropic branches, stem diameter, plant height and yield, in two harvest periods, besides the surface chemical characteristic of the soil. Increasing the dose of the slow-release fertilizer leads to greater plant growth; the coffee plant presents a highly responsive behavior to the increase in fertilizer doses in relation to nitrogen, and the use of the slow-release fertilizer Agroblen (20-05-20) 100% and ammonium sulfate + SS + KCl allows greater yield.

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Section: Discussionmentioning

confidence: 99%