Cobre e zinco no material percolado e no solo com a aplicação de água residuaria de suinocultura em solo cultivado com soja

Abstract

O objetivo deste trabalho foi avaliar possíveis efeitos da aplicação de taxas de água residuária de suinocultura (ARS), quanto às concentrações de cobre e zinco, tanto no solo quanto na água percolada de lisímetros de drenagem, durante o ciclo da cultura da soja. O experimento foi conduzido em ambiente protegido, onde havia 24 lisímetros de drenagem. Semeou-se soja cultivar CD 202, e foram aplicadas ARS nas seguintes dosagens: 0; 100; 200 e 300 m³ ha-1 no ciclo, combinadas com duas adubações na semeadura (com e sem adição da adubação recomendada na semeadura), em três repetições por tratamento. Foram feitas seis coletas do material percolado durante o ciclo da cultura e realizadas determinações de cobre e zinco. No solo, foram feitas três coletas em cada parcela experimental, para a determinação do pH, da matéria orgânica, da capacidade de troca catiônica, do cobre e do zinco. O delineamento foi em blocos casualizados, num esquema fatorial de 4 x 2. Observou-se que o cobre no solo não apresentou diferenças significativas com a aplicação de ARS e adubação, enquanto as concentrações de zinco no solo foram influenciadas pelas taxas aplicadas de ARS. As transferências de cobre e de zinco por percolação foram pouco expressivas.

Mineral composition and growth of babycorn under swine wastewater combined with chemical fertilization

“…of the fourth leaf developed to the end of the crop cycle, called as dolled up in case of the babycorn, totaling seven observations in which plant height (EP), vertical distance between soil surface and the highest part of the plant, number of leaves developed per plant (NF P -1 ), leaf area (LA) length by width of leaf product multiplied by a 0.75 factor (Stickler et al, 1961), leaf area index (LAI) -ratio between photosynthetic active leaf area and the land surface area occupied by the plant, absolute growth rate (AGR) -ratio between height and time between two successive samplings.…”

“…The determination of N, P, K, Ca, Mg, S, Cu, Zn, Mn and Fe followed the methodology proposed by Tedesco et al (1995) The average contents (Table 3) of N and K are below levels considered adequate for maize (27.5 to 32.5 g kg -1 and 17.5 to 22. 5 g kg -1 , respectively) and the nutrients P, Ca, Mg and S are much higher than the appropriate values (2.5 to 3.5, 2.5 to 4.0, 2.5 to 4,0 and 1.0 to 2.0 g kg -1…”

“…An alternative that allows for the use of waste, minimizing its impact on the environment is aimed, since the intensification of technified swine manure, by being a waste concentrator activity, possessing high pollutant load to the soil, air and water, and also as in some Brazilian regions a considerable increase in the wastewater production from swine manure (ARS) -depending on the type of management -have become a major source of contamination (Smanhotto et al, 2010).…”

Association of swine wastewater and mineral fertilization on black oat production

“…No significant differences were observed for any form of NO 3+ NO 2+ in the leachate, both for SW and MF (Table 5). DAUDÉN & QUÍLEZ (2004), MAGGI et al (2011) andSMANHOTTO (2008) in their experiments with SW found no significant differences in the concentrations of these elements in the leachate either.…”

Swine wastewater associated with mineral fertilization on corn crop (Zea mays)

“…Authors like AITA & GIACOMINI (2008), BERWANGER et al (2008), CAOVILLA et al (2010 and SAMPAIO et al (2010a) who evaluated the negative impacts of the swine wastewater application in soil, such as fertility problems and toxicity resulting from accumulation of ions in soil. Other authors also claim that the manure application is prone to surface and groundwater contamination due to surface and vertical displacement of these ions accumulated in soil (PRIOR et al, 2009;SAMPAIO et al, 2010b;SMANHOTTO et al, 2010;MAGGI et al, 2011;LUCAS et al, 2013).…”