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Revista de Ciências Agrárias
Article . 2016 . Peer-reviewed
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Revista de Ciências Agrárias
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Fenologia e acumulação de nutrientes por cebola de dia curto em semeadura direta

Phenology and nutrient uptake by short-day onion in direct seeding
Authors: Moraes,Carolina C. de; Araujo,Humberto S. de; Factor,Thiago L.; Purquerio,Luis Felipe V.;

Fenologia e acumulação de nutrientes por cebola de dia curto em semeadura direta

Abstract

O objetivo do trabalho consistiu em caracterizar a fenologia e a acumulação de nutrientes ao longo do ciclo de cultivo de cebola de dia curto estabelecida por semeadura direta. O delineamento experimental foi o de blocos casualizados, com quatro repetições, onde os tratamentos foram épocas de avaliação. Avaliou-se o número de folhas, diâmetro transversal e longitudinal do bolbo, massa seca e acumulação de nutrientes na planta. Na colheita as plantas atingiram 39,0 g de massa seca. A sequência de acumulação de nutrientes (g planta-1) verificada foi: K (0,80) > N (0,49) > Ca (0,26) > S (0,17) > P (0,09) > Mg (0,05) e (mg planta-1) Fe (2,17) > Zn (1,42) > Mn (1,36) > Cu (1,06) > B (0,92). Para uma população de 320.000 plantas ha-1 com produtividade de 78,9 t ha-1, ao final do ciclo de cultivo, a planta acumulou 256,2; 157,2; 83,6; 53,2; 29,1; 15,4 kg ha-1 de K, N, Ca, S, P e Mg e 694,8; 455,7; 436,0; 339,3; 294,6; g ha-1 de Fe, Zn, Mn, Cu, e B. Os bolbos exportaram 38, 55, 38, 28, 42, 40, 41, 9, 20, 10 e 30% do N, P, K, Ca, Mg, S, B, Cu, Fe, Mn e Zn.

Revista de Ciências Agrárias, vol. 39 n.º 2 (2016)

Keywords

Allium cepa L., nutrição de plantas, sustentabilidade, absorção de nutrientes

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
9
Top 10%
Top 10%
Average
Green
gold