Adubação fosfatada em inhame em duas épocas de colheita

Oliveira, Arnaldo Nonato P de; Oliveira, F. A. de; Sousa, Leossávio C de; Silva, Jandiê A da; Silva, Damiana F da; Silva, Natália V da; Santos, Rodolfo R

doi:10.1590/s0102-05362011000400002

Cited by 2 publications

(2 citation statements)

References 9 publications

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“…Destaca-se pelo valor agregado de suas túberas em relação a outras fontes de carboidrato, como batata doce e mandioca, e pela alta necessidade de mão-de-obra durante seu ciclo, principalmente na colheita, gerando emprego e renda. Do ponto de vista nutricional sua túbera é útil para a saúde humana devido aos teores de minerais (Ca, P e Fe), carboidratos, aminoácidos essenciais, provitamina A, provitamina D, vitaminas C e do complexo B, além de suas propriedades medicinais que garantem o uso na farmacologia com destaque na síntese de cortisona e hormônios esteroides (Mesquita, 2002;Oliveira et al, 2011).…”

Section: Palavras-chave: Dioscorea Cayennensis Adubação Orgânica Prunclassified

Produção do inhame em solo adubado com fontes e doses de matéria orgânica

Dantas

Cavalcante

Dantas

et al. 2013

Rev. bras. eng. agríc. ambient.

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RESUMOObjetivou-se neste trabalho avaliar o comportamento do inhame, cultivar Da Costa, adubado com fontes e doses de matéria orgânica. O delineamento experimental foi em blocos casualizados distribuídos em esquema fatorial 6 x 2, correspondendo a seis doses (0, 6, 12, 18, 24 e 30 t ha -1 ) e duas fontes de matéria orgânica (esterco bovino e caprino), em três repetições. O comprimento de túberas aumentou de forma linear com valor máximo de 27,5 cm na dose de 30 t ha -1 de esterco caprino e o esterco bovino proporcionou túberas com comprimento médio de 23,64 cm. O diâmetro foi de 9,1 e 9,3 cm nas doses de 20 e 21,6 t ha -1 de esterco caprino e bovino, respectivamente. A máxima massa média de túberas de 1,4 kg foi obtida com a dose 17,4 t ha -1 de esterco caprino e, em função do fornecimento das doses de esterco bovino obteve-se o valor médio de 1,11 kg. A dose de 20,9 t ha -1 de esterco caprino proporcionou a máxima produtividade comercial de túberas de 14 t ha -1 e produtividade média de 10,1 t ha -1 com o uso de esterco bovino. O esterco caprino foi superior ao bovino e a dose em torno de 20 t ha -1 de ambos os estercos promove os maiores valores nas características avaliadas. Palavras-chave: Dioscorea cayennensis, adubação orgânica, produtividade de túberasProduction of yam in a soil fertilized with different sources and rates of organic matter ABSTRACT The objective of this study was to evaluate the behavior of yam, variety Da Costa, fertilized with different sources and rates of organic matter. The experimental design was a randomized complete blocks distributed in a factorial 2 x 6, corresponding to six rates (0, 6, 12, 18, 24 and 30 t ha -1 ) and two sources of organic matter (cattle and goat manure), with three replications. The length of tubers increased linearly with maximum value of 27.5 cm at a rate of 30 t ha -1 of goat manure and the bovine manure provided tubers with mean length of 23.64 cm. The diameter was of 9.1 and 9.3 cm in rates of 20 and 21.6 t ha -1 of goat and bovine manure, respectively. The maximum mean mass of 1.4 kg was obtained with the rate 17.4 t ha -1 of goat manure and in function of rates of bovine manure the mean value obtained was 1.11 kg. A rate of 20.9 t ha -1 of goat manure provided the maximum commercial productivity of tubers of 14 t ha -1 , while mean productivity of 10.1 t ha -1 was obtaines with the use of bovine manure. The goat manure is better than bovine manure and the rate around of 20 t ha -1 of both the manures promoted the highest values of the evaluated characteristics.

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Section: Palavras-chave: Dioscorea Cayennensis Adubação Orgânica Prunclassified

Produção do inhame em solo adubado com fontes e doses de matéria orgânica

Dantas

Cavalcante

Dantas

et al. 2013

Rev. bras. eng. agríc. ambient.

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“…This may result from factors such as naturally low soil fertility and traditional farming practices, indicating the need for research in the application of fertilizers appropriate for yams (DANTAS et al, 2013). The correct use of fertilizers, including the right doses and the specific developmental stages could improve yam yield (OLIVEIRA et al, 2011). A plant's nitrogen (N) requirements vary according to the developmental stage, and in some crops, excessive N can increase vegetative growth that could be detrimental to crop yield.…”

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Response of yams exposed to different sources and doses of nitrogen fertilizers in the State of Maranhão, Brazil

et al. 2015

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This study was carried out at the State University of Maranhão, São Luís, Brazil from January to November 2012. We assessed the behavior of the yam Dioscorea cayenensis 'Da Costa', fertilized with different rates and sources of nitrogen (N). The experimental design was randomized, with treatments in a 6 × 2 factorial design. The factors were represented by six rates of N fertilization (0, 50, 100, 150, 200, and 250 kg·ha -1 ) and two sources (ammonium sulfate and urea) by using four replicates. We evaluated the mean mass, commercial root yield, leaf N content, starch content in the tubers, and percentage of tubers with symptoms of nematode infection (dry and thick skins). The maximum values for the mean masses of commercial tubers were 2.5 and 1.9 kg with doses of 130 and 160 kg of N ha -1 from ammonium sulfate and urea, respectively. Doses of 130 and 154.3 kg of N ha -1 produced the maximum yields of commercial tubers of 19.7 and 14.9 t·ha -1 with ammonium sulfate and urea fertilization, respectively. The maximum levels of foliar N by using urea and ammonium sulfate were 36.5 and 29.3 g·kg -1 , respectively, at a dosage of 250 kg·ha -1 . The maximum starch contents of 25.7 and 28.3 % were obtained at doses of 114 and 116 kg of N ha -1 of ammonium sulfate and urea, respectively. The percentage of tubers infected with nematodes was 10% when the N source was urea and 15.6% when the source was ammonium sulfate, both at a dosage of 250 kg·ha -1 .

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Adubação fosfatada em inhame em duas épocas de colheita

Cited by 2 publications

References 9 publications

Produção do inhame em solo adubado com fontes e doses de matéria orgânica

Produção do inhame em solo adubado com fontes e doses de matéria orgânica

Response of yams exposed to different sources and doses of nitrogen fertilizers in the State of Maranhão, Brazil

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