Lixiviação de nutrientes em solo cultivado com aplicação de água residuária de suinocultura

Abstract

This work aimed to evaluate the impacts on leachate from drainage lysimeters receiving application of different rates of pig farming residual water (PRW) during soybean crop cycle. The experiment was conducted at the Agricultural Engineering Experimental field of UNIOESTE. The soil was classified as Rhodic Ferralsols. There were twenty-four drainage lysimeters where soybean cultivar CD 214 was sown. Four PRW rates (0; 100; 200 and 300 m 3 ha -1) were applied to the soil seven days before sowing in a single application combined with two fertilizations (with and without recommended dose) during sowing, and three repetitions per treatment. Three leachate collections were carried out in each experimental plot. The first was conducted 40 days after sowing (DAS); the second at 72 DAS, and the third at the end of crop cycle (117 DAS). pH, calcium, magnesium, potassium, phosphorus, and total nitrogen were evaluated. Based on the results, it was possible to observe that pH and Mg values in the leachate did not suffer influence of PRW application and fertilization. K + , P and Ca +2 in the leachate were higher for higher PRW rates.

Corn Fertilization Using Swine Wastewater and Soil-Water Environmental Quality

“…Agríc., Jaboticabal, v.37, n.4, p.801-810, jul./ago. 2017 802 Maggi et al, 2011) and entrainment of ions (Wang et al, 2013), ammonia volatilization, and nitrous oxide emission (Gonzatto et al, 2013). However, most of the studies related to swine wastewater application are carried out in short term.…”

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 farm wastewater and mineral fertilization in corn cultivation

“…Many of these studies describe positive Maggi et al, 2011;Kessler et al, 2013b;Kessler et al, 2014) and negative (Doblinski et al, 2010;Sampaio et al, 2010;Meneghetti et al, 2012;Smanhotto et al, 2013;Tessaro et al, 2013) influences of SFW reuse on soil and its biota, plants, leachate and on runoff. Therefore, the challenge in wastewater management is to develop adequate application protocols, in order to minimize the polluting power of the activity and potentiate its efficiency as a liquid fertilizer.…”