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Avaliação do efeito de doses de potássio na produção e qualidade da batata de indústria "VR 808" : aplicação de "Patentkali®" em condições de cultura comercial
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Advisor(s)
Abstract(s)
A indústria de transformação de batata frita pretende produto de qualidade e com elevado rendimento industrial. Para tal, é fundamental realizar um plano de fertilização racional e equilibrado, respeitando o meio ambiente, intensificando o potencial produtivo das plantas.
Neste trabalho são apresentados os resultados da avaliação do efeito de diferentes doses de potássio em condições comerciais de cultivo, aplicadas na forma de um adubo comercial na produção e qualidade de fritura da batata de indústria “VR 808”.
Foram instalados dois campos experimentais, em 2015 e 2016, respetivamente, num solo arenoso em Marinhais, Salvaterra de Magos. O ensaio monofactorial foi instalado de acordo com um delineamento experimental em parcelas totalmente aleatórias, considerando-se um total de 4 repetições por tratamento e uma área total de 520 m2. O potássio foi aplicado em cinco tratamentos: K0-0 kg/ha, K1-100 kg/ha, K2-200 kg/ha, K3 -300 kg/ha e K4 -400 kg/ha expressos em K2O. Os tratamentos foram aplicados logo após a plantação, na forma de sulfato (K2SO4), utilizando-se o adubo comercial “PatentKali®”.
Avaliou-se o efeito dos tratamentos na produção comercial, no calibre e nos parâmetros de qualidade dos tubérculos, particularmente, no teor de matéria seca, defeitos externos e internos.
No ano de 2015 observou-se efeito dos tratamentos, tendo-se registado resposta à aplicação do K2O na forma de “PatentKali®”. No ano de 2016, não se observaram diferenças estatisticamente significativas entre tratamentos.
Da análise efetuada no ensaio de 2016, apesar de existir uma resposta favorável à aplicação de potássio no número de tubérculos de calibre ≥60mm, não foi possível concluir que tenha havido efeito dos tratamentos ao nível deste parâmetro.
No ano de 2016 verificaram-se diferenças significativas entre tratamentos (K1 e os restantes) relativamente aos teores de cálcio na matéria seca da folha e tubérculos.
The industry of crisp processing intends quality product with high industrial yield. For that it is fundamental to make a rational and balanced fertilization plan, respecting the environment, increasing the productive potential of the plants. This work presents the results of the evaluation of the effect of different doses of potassium under commercial conditions of cultivation, applied in the form of a commercial fertilizer in the production and quality of frying of the industry "VR 808" potato variety. Two experimental fields were installed in 2015 and 2016, respectively, in a sandy soil, in Marinhais, Salvaterra de Magos. The monofactorial trial was conducted according to an experimental design in totally random fields, considering a total of 4 repetitions by treatment and a total area of 520 m2. Potassium was applied in five treatments: K0-0 Kg/ha, K1-100 Kg/ha, K2-200 Kg/ha, K3 -300 Kg/ha e K4 -400 Kg/ha expressed as K2O. The treatments were applied immediately after planting, in the form of sulfate (K2SO4), using commercial fertilizer "PatentKali®". Were evaluated the effect of the treatments on the commercial production, the caliber and the quality parameters of the tubers, particularly the dry matter content, external and internal defects. In the year 2015, the effect of the treatments was observed, with a response to the application of K2O in the form of "PatentKali®". In the year 2016, there were no statistically significant differences between treatments. From the analysis carried out in the 2016 trial, although there is a favorable response to potassium application in the number of ≥60mm tubers size, it was not possible to conclude that there was an effect of treatments at this parameter level. In the year 2016, there were significant differences between treatments (K1 and the others) in relation to calcium contents in the dry matter of the leaf and tubers.
The industry of crisp processing intends quality product with high industrial yield. For that it is fundamental to make a rational and balanced fertilization plan, respecting the environment, increasing the productive potential of the plants. This work presents the results of the evaluation of the effect of different doses of potassium under commercial conditions of cultivation, applied in the form of a commercial fertilizer in the production and quality of frying of the industry "VR 808" potato variety. Two experimental fields were installed in 2015 and 2016, respectively, in a sandy soil, in Marinhais, Salvaterra de Magos. The monofactorial trial was conducted according to an experimental design in totally random fields, considering a total of 4 repetitions by treatment and a total area of 520 m2. Potassium was applied in five treatments: K0-0 Kg/ha, K1-100 Kg/ha, K2-200 Kg/ha, K3 -300 Kg/ha e K4 -400 Kg/ha expressed as K2O. The treatments were applied immediately after planting, in the form of sulfate (K2SO4), using commercial fertilizer "PatentKali®". Were evaluated the effect of the treatments on the commercial production, the caliber and the quality parameters of the tubers, particularly the dry matter content, external and internal defects. In the year 2015, the effect of the treatments was observed, with a response to the application of K2O in the form of "PatentKali®". In the year 2016, there were no statistically significant differences between treatments. From the analysis carried out in the 2016 trial, although there is a favorable response to potassium application in the number of ≥60mm tubers size, it was not possible to conclude that there was an effect of treatments at this parameter level. In the year 2016, there were significant differences between treatments (K1 and the others) in relation to calcium contents in the dry matter of the leaf and tubers.
Description
Dissertação de Mestrado na área da Agricultura Sustentável apresentada na Escola Superior Agrária de Santarém, Instituto Politécnico de Santarém.
Keywords
Batata de indústria Solanum tuberosum Variedade Adubo potássico Rendimento de cultura Processing potato Potash fertilizers Crop yield
Citation
Almeida, Maria de Lurdes dos Santos (2016). Avaliação do efeito de doses de potássio na produção e qualidade da batata de indústria "VR 808" : aplicação de "Patentkali®" em condições de cultura comercial. 41 p. Dissertação apresentada para obtenção do grau de Mestre na área de Agricultura Sustentável. Disponível em: http://hdl.handle.net/10400.15/1726