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	Provedor de dados Phyton (1) Rev. Bras. Ciênc. Solo (1) Autor Huang,L-H (1) Liang,Z-W (1) Liu,M (1) Reichert,José Miguel (1) Reinert,Dalvan José (1) Veiga,Milton da (1) Wang,M-M (1) Yang,H-Y (1) Mais... Palavra-chave Sampling time (2) Aggregation (1) Crown root (1) Estimation method (1) Manure (1) Oryza sativa L (1) Saline-sodic soil (1) Soil structure (1) Soil tillage (1) Mais... Tipo do documento Info:eu-repo/semantics/article (2) Ano 2016 (1) 2009 (1) País Argentina (1) Brazil (1) Idioma Inglês (2)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 2 Primeira ... 1 ... Última An effective method for estimation of rice (Oryza sativa L.) crown root numbers at the heading stage in saline-sodic soils of Northeast China Phyton Liu,M; Liang,Z-W; Huang,L-H; Wang,M-M; Yang,H-Y. Saline-sodic stress is a major abiotic constraint responsible for rice (Oryza sativa L.) yield reductions in Northeast China. The rice root system is crucial for yield development, and it is usually recognized as the key for improving future crop productivity. However, most of the saline-sodic soils in these areas contain high levels of soluble Na2CO3 and NaHCO3, which results in a high pH (>8.5), clay dispersion, soil swelling, and overall poor soil physical properties. Isolation, washing and measurement of the rice crown roots is highly time-demanding in this kind of soil. Our aim was to explore whether differences in shoot characters could be reliable indicators, and a low cost and easy method for estimating crown root numbers in rice. In this... Tipo: Info:eu-repo/semantics/article Palavras-chave: Saline-sodic soil; Oryza sativa L; Crown root; Sampling time; Estimation method. Ano: 2016 URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1851-56572016000100022 Aggregate stability as affected by short and long-term tillage systems and nutrient sources of a hapludox in southern Brazil Rev. Bras. Ciênc. Solo Veiga,Milton da; Reinert,Dalvan José; Reichert,José Miguel. The ability of a soil to keep its structure under the erosive action of water is usually high in natural conditions and decreases under frequent and intensive cultivation. The effect of five tillage systems (NT = no-till; CP = chisel plowing and one secondary disking; CT = primary and two secondary distings; CTb = CT with crop residue burning; and CTr = CT with removal of crop residues from the field), combined with five nutrient sources (C = control, no nutrient application; MF = mineral fertilizers according to technical recommendations for each crop; PL = 5 Mg ha-1 y-1 fresh matter of poultry litter; CM = 60 m³ ha-1 y-1 slurry cattle manure; and SM = 40 m³ ha-1 y-1 slurry swine manure) on wet-aggregate stability was determined after nine years (four... Tipo: Info:eu-repo/semantics/article Palavras-chave: Soil tillage; Manure; Sampling time; Soil structure; Aggregation. Ano: 2009 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832009000400003 Registros recuperados: 2 Primeira ... 1 ... Última

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