4 results

Effect of cropping systems in no-till farming on the quality of a Brazilian Oxisol

Getulio de Freitas Seben Junior, José Eduardo Corá, Rattan Lal

01/Aug/2014

The no-till system with complex cropping sequences may improve the structural quality and carbon (C) sequestration in soils of the tropics. Thus, the objective of this study was to evaluate the effects of cropping sequences after eight years under the no-till system on the physical properties and C sequestration in an Oxisol in the municipality of Jaboticabal, Sao Paulo, Brazil. A randomized split-block design with three replications was used. The treatments were combinations of three summer cropping sequences – corn/corn […]

Crop sequences in no-tillage system. II – Dry matter decomposition and nutrient release in the second growing season

Adolfo Valente Marcelo, José Eduardo Corá, Carolina Fernandes

01/Nov/2012

Nutrients accumulated in dry crop residues and released in the decomposition process return to the soil and may become available to subsequent crops. The objective of this study was to evaluate the decomposition and nutrient release of plant residues of different no-tillage crop sequences in the second growing season. A field experiment was carried out on a Rhodic Eutrudox in Jaboticabal, SP, Brazil (48°18’W and 21°15’S), arranged in a randomized split-block design with three replications. The treatments consisted of combinations […]

Crop sequences in no-tillage system: I – Dry matter production and nutrient accumulation

Adolfo Valente Marcelo, José Eduardo Corá, Carolina Fernandes

01/Nov/2012

In no-tillage systems, plant residues are used as soil cover to control soil erosion and promote nutrient cycling. The objective of this study was to evaluate the dry matter production and nutrient accumulation after different crop sequences in no-tillage. A field experiment was carried out on a Rhodic Eutrudox in Jaboticabal, SP, Brazil (48°18’W and 21°15’S). A randomized split-block design with three replications was used. The treatments were combinations of three summer crop sequences (soybean-corn rotation, corn monoculture and soybean […]

Crop sequences in no-tillage system: effects on soil fertility and soybean, maize and rice yield

Adolfo Valente Marcelo, José Eduardo Corá, Carolina Fernandes, Márcio dos Reis Martins, Ricardo Falqueto Jorge

01/Apr/2009

Decomposing crop residues in no-tillage system can alter soil chemical properties, which may consequently influence the productivity of succession crops. The objective of this study was to evaluate soil chemical properties and soybean, maize and rice yield, grown in the summer, after winter crops in a no-tillage system. The experiment was carried out in Jaboticabal, SP, Brazil (21 ° 15 ‘ 22 ” S; 48 ° 18 ‘ 58 ” W) on a Red Latosol (Oxisol), in a completely randomized block design, in strip plots with three replications. The treatments consisted of […]