parcelamento e fontes de nitrogênio para produção de maxixe parceling and nitrogen fertilization sources for gherkin yield

Clicks: 303
ID: 155310
2010
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Abstract
Fontes e parcelamentos de nitrogênio foram avaliados no rendimento do maxixeiro, cv. Nordestino, na Universidade Federal da Paraíba, em blocos casualizados, esquema fatorial 2 x 7, com duas fontes de nitrogênio (uréia e sulfato de amônio) e sete épocas de aplicação: a) (100% na semeadura; b) 100% aos 30 dias após a semeadura (DAS); c) 100% aos 60 DAS; d) 50% na semeadura e 50% aos 30 DAS; e) 50% na semeadura e 50% aos 60 DAS; f) 50% aos 30 e 50% aos 60 DAP; g) 33% na semeadura, 33% aos 30 e 33% aos 60 DAP, em quatro repetições. O peso médio de frutos foi inferior quando o sulfato de amônio foi fornecido 100% na semeadura e 100% aos 60 DAS, 27 e 21 g fruto-1, respectivamente, não havendo alteração na fonte uréia, e entre as fontes. A produção de frutos por planta (2,364 kg planta-1), o número de frutos por planta (64 frutos planta-1) e a produtividade de frutos (20,93 t ha-1) foram superiores significativamente quando o nitrogênio, fonte sulfato de amônio foi parcelado 50% aos 30 e 50% aos 60 DAS. Quando a fonte de nitrogênio foi a uréia, a produção de frutos por planta (1,437 kg planta-1), o número de frutos por planta (48 frutos planta-1) e a produtividade de frutos (12,66 t ha-1) foram significativamente maiores quando foi parcelada 50% na semeadura e 50% aos 30 DAS.
The nitrogen sources and parceling were evaluated concerning to gherkin plant, Nordestino cv., in the Universidade Federal da Paraíba, Brazil. The experimental design was the randomized block design in the factorial scheme 2 x 7, constituted of two nitrogen sources (urea and ammonium sulfate) and seven application times: a) (100% at sowing date; b) 100% 30 days after sowing (DAS); c) 100% 60 DAS; d) 50% at sowing date and 50% at 30 DAS; e) 50% at sowing date and 50% at 60 DAS; f) 50% at 30 and 50% at 60 DAP; g) 33% at sowing date, 33% at 30 33% at 60 DAP, with four replicates. The average weight of the fruits was inferior, 27 and 21 g, respectively, when the ammonium sulfate was 100% supplied at sowing and 100% at 60 DAS, as no alteration occurring in the urea source nor between those N sources. The yield of fruits of one plant (2.364 kg plant-1), the number of fruits of one plant (64 fruits plant-1) and fruit productivity (20.93 t ha-1) were significantly higher, when the nitrogen (ammonium sulfate source) was 50% parceled at 30 and 50% at 60 DAS. When urea was the nitrogen source, the yield of fruits of one plant (1.437 kg plant-1), the number of fruits of one plant (48 fruits plant-1) and the fruit productivity (12.66 t ha-1) were significantly higher, when it was parceled 50% at sowing date and 50% at 30 DAE.
Reference Key
oliveira2010horticulturaparcelamento Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors ;Ademar P de Oliveira;Flávio José V de Oliveira;Jandiê A da Silva;Arnaldo Nonato P de Oliveira;Rodolfo R Santos;Damiana F da Silva
Journal research on biomedical engineering
Year 2010
DOI
10.1590/S0102-05362010000200014
URL
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-05362010000200014
Keywords
Urea yieldplant culture

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