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Soybean root growth and crop yield in reponse to liming at the beginning of a no-tillage system Rev. Bras. Ciênc. Solo
Bortoluzzi,Edson Campanhola; Parize,Guilherme Luis; Korchagin,Jackson; Silva,Vanderlei Rodrigues da; Rheinheimer,Danilo dos Santos; Kaminski,João.
Analyzing the soil near crop roots may reveal limitations to growth and yield even in a no-tillage system. The purpose of the present study was to relate the chemical and physical properties of soil under a no-tillage system to soybean root growth and plant yield after five years of use of different types of limestone and forms of application. A clayey Oxisol received application of dolomitic and calcitic limestones and their 1:1 combination in two forms: surface application, maintained on the soil surface; and incorporated, applied on the surface and incorporated mechanically. Soil physical properties (resistance to mechanical penetration, soil bulk density and soil aggregation), soil chemical properties (pH, exchangeable cations, H+Al, and cation...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Dolomitic limestone; Calcitic limestone; Soil physical resilience; Cone index.
Ano: 2014 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832014000100026
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Use of cassava wastewater treated anaerobically with alkaline agents as fertilizer for maize (Zea mays L.) BABT
Ribas,Maria Magdalena Ferreira; Cereda,Marney Pascoli; Villas Bôas,Roberto Lyra.
The wastewater of the processing of cassava's flour (manipueira) was submitted to the anaerobic treatment in two phases: acidogenic and methanogenic. In the acidogenic phase, the wastewater was stabilized with NaOH (ASH) and with limestone (ASL). After that, both stabilized effluents were treated by a methanogenic reactor. Then, the effluent of the methanogenic reactor was used as fertilizer on maize in the initial growth stage (30 days), cultivated in pots in a greenhouse. The treatments were T1: control without urea addition (only N from soil); T2: NPK (2.2 g of urea with 45% of N); T3: ASH (84 mL.kg soil-1); T4: ASL (102 mL.kg soil-1); T5: double dose ASH (168 mL.kg soil-1) and T6: double dose ASL (204 mL.kg soil-1). Each treatment was composed by 4...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Reuse; Manipueira; Anaerobic digestion; Hydroxide sodium; Dolomitic limestone.
Ano: 2010 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132010000100007
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