Características de produção de frutos de melancia sem sementes em função de fontes e doses de potássio

Grangeiro, Leílson Costa; Filho, Arthur Bernardes Cecílio

doi:10.1590/s0102-05362006000400011

Cited by 6 publications

(5 citation statements)

References 9 publications

(1 reference statement)

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“…Different from the present study, Grangeiro & Cecílio Filho (2006) observed that the yield of seedless watermelon showed a quadratic behavior in response to K doses. The maximum yield was estimated at 20,400 kg ha -1 , for the K 2 O dose of 183 kg ha -1 .…”

Section: Resultscontrasting

confidence: 99%

Potassium fertilizer applied by different methods in the zucchini crop

Fernandes

Azevedo

Camargo³

et al. 2016

Rev. bras. eng. agríc. ambient.

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Aiming to evaluate the effect of potassium (K) doses applied by the conventional method and fertigation in zucchini (Cucurbita pepo L.), a field experiment was conducted in Fortaleza, CE, Brazil. The statistical design was a randomized block, with four replicates, in a 4 x 2 factorial scheme, which corresponded to four doses of K (0, 75, 150 and 300 kg K2O ha-1) and two fertilization methods (conventional and fertigation). The analyzed variables were: fruit mass (FM), number of fruits (NF), fruit length (FL), fruit diameter (FD), pulp thickness (PT), soluble solids (SS), yield (Y), water use efficiency (WUE) and potassium use efficiency (KUE), besides an economic analysis using the net present value (NPV), internal rate of return (IRR) and payback period (PP). K doses influenced FM, FD, PT and Y, which increased linearly, with the highest value estimated at 36,828 kg ha-1 for the highest K dose (300 kg K2O ha-1). This dose was also responsible for the largest WUE, 92 kg ha-1 mm-1. KUE showed quadratic behavior and the dose of 174 kg K2O ha-1 led to its maximum value (87.41 kg ha-1 (kg K2O ha-1)-1). All treatments were economically viable, and the most profitable months were May, April, December and November.

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Section: Resultscontrasting

confidence: 99%

Potassium fertilizer applied by different methods in the zucchini crop

Fernandes

Azevedo

Camargo³

et al. 2016

Rev. bras. eng. agríc. ambient.

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“…O incremento da produtividade de melancieira com aumento de doses de potássio no solo também foi verificado por Grangeiro & Cecílio Filho (2006), El-Bassiony et al (2012, Oliveira et al (2012). O rendimento máximo obtido, 23 t ha -1 , é superior aos valores 9,4 e 21,1 t ha -1 registrados por Grangeiro & Cecilio Filho (2006) e Rashidi & Kesharvazpour (2011), respectivamente, em plantas de melancia cultivadas em solo com fornecimento de K e N. Em plantas de melancia tratadas com N e P, Uwah et al (2010) obtiveram um valor máximo de 18 t ha -1 .…”

Section: Resultsunclassified

“…) e observaram variação significativa na massa média dos frutos. Em outros trabalhos realizados porGrangeiro & Cecílio Filho (2006) e El-Bassiony et al(2012), onde utilizou-se doses variando entre 50 e 300 kg ha -1 também foi observada variação significativa para doses de K sobre a massa média dos frutos. Isso significa que a dose, 30 kg ha…”

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Produção de melancia em solo adubado com esterco bovino e potássio

Nascimento

Souto

Cavalcante

et al. 2017

Agraria

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A variabilidade e os baixos rendimentos da melancia no Nordeste brasileiro estão atrelados à falta de pesquisas sobre o manejo de adubação da cultura. Objetivou-se com esse trabalho avaliar a produção de melancia em solo submetido a doses de esterco bovino e potássio. Os tratamentos foram distribuídos em blocos ao acaso, com três repetições e 21 plantas por parcela em arranjo fatorial 3 × 5 + 1, referente à três doses de esterco bovino (0,0; 1,10 e 2,52 kg cova-1), cinco doses de potássio (0,0; 7,5; 15; 22,5 e 30 kg ha-1), e um tratamento adicional (sem adubação orgânica e mineral). Exceto o tratamento adicional, os demais tratamentos receberam nitrogênio, na forma de ureia (120 kg ha-1 de N). Foram avaliados: o número de frutos por planta, massa média dos frutos, produtividade e tamanho dos frutos (diâmetro longitudinal dos frutos-DLF e diâmetro equatorial dos frutos-DEF). As doses de K 2 O fornecidas não foram suficientes para elevar a massa média dos frutos de melancia a valores satisfatórios. A dose 1,10 kg cova-1 de esterco bovino foi a que promoveu maiores valores de produtividade. O incremento na dose de esterco bovino reduziu a necessidade de fertilizante potássico para elevar a produtividade das plantas de melancia.

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“…The supply of potassium and nitrogen to the soil in addition to manure stimulated fruit production. These two nutrients are required in large amounts by watermelon (Grangeiro & Cecílio Filho, 2006), and therefore plants responded positively to their supply. Leão et al (2008) evaluated the effects of applying manure and NPK fertilizer on watermelon production, and obtained 1.15 fruits per plant by providing 9 L manure per hole, treatments with fertilization.…”

Section: Resultsmentioning

confidence: 99%

“…Fertilization is a crucial factor for short-cycle vegetable crops with a high demand for nutrients like potassium and nitrogen (Andrade Junior et al, 2006). Some studies show that watermelon is highly demanding of potassium, the nutrient that is the most absorbed and exported to the fruits during the productive phase (Grangeiro & Cecílio Filho, 2006;Aguyoh et al, 2011).…”

Section: Introductionmentioning

confidence: 99%

Watermelon (Citrullus lanatus Thunb.) Production as Affected by Soil Potassium Fertilizer and Livestock Manure

Nascimento¹,

Souto

Cavalcante

et al. 2017

Agrociencia

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Organic-mineral nutrient availability in soils cultivated with vegetables is essential for a satisfactory and economically viable production, including the watermelon (Citrullus lanatus). The aim of this experiment was to evaluate the influence of the addition of livestock manure to the soil with and without potassium on watermelon (cv. Crimson Sweet) production in Paraiba, Brazil. The treatments were arranged in a design of randomized blocks, with four replications, with a factorial arrangement 2 × 5 + 1, in relation to the absence and presence of potassium, five levels of livestock manure (0, 360; 1.080; 1800 and 2510 g hole-1) in the soil with nitrogen fertilization, and a control treatment (without cattle manure or mineral fertilizers). The number of fruits per plant, the average weight of the fruits per plant, and the yield were evaluated. The plants responded positively to the application of livestock manure to the soil, but the results were higher in combination with potassium fertilization. Productivity increased in treatments in which potassium was supplied to the soil in addition to a maximum of 1124 g hole-1 of cattle manure. Half of the previously recommended level of potassium supply was enough to raise the productivity of watermelon in the region.

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Características de produção de frutos de melancia sem sementes em função de fontes e doses de potássio

Cited by 6 publications

References 9 publications

Potassium fertilizer applied by different methods in the zucchini crop

Potassium fertilizer applied by different methods in the zucchini crop

Produção de melancia em solo adubado com esterco bovino e potássio

Watermelon (Citrullus lanatus Thunb.) Production as Affected by Soil Potassium Fertilizer and Livestock Manure

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