Physical and chemical changes in soil fertilized with poultry manure with and without chiseling

Abstract

A B S T R A C TPoultry manure and mechanical management may influence the distribution of nutrients in the soil profile. The objective was to evaluate physical and chemical changes in a soil with palisade grass (Brachiaria brizantha cv. Marandu) fertilized with doses of poultry manure with and without use of soil chiseling, after 180 days of application. The design was a randomized blocks with four replicates, in a 5 x 2 factorial arrangement with five doses of manure (0, 1.073, 2.074, 4.148 and 6.222 Mg ha -1 ), with and without soil chiseling at 0.20 m. Soil chiseling caused physical changes with an increase of macroporosity in the layer of 0-0.2 m and reduction in soil density and increase in macroporosity and total porosity in the layer of 0.2-0.4 m. With manure doses, pH in the layer of 0-0.1 m showed quadratic fit with maximum value of 7.2. The increases in Ca and Zn in the layer of 0-0.1 m were, respectively, 0.61 cmol c dm -3 and 2.99 mg dm -3 . In the interaction of Dose x Management, without soil chiseling, K showed a linear fit and increased 1.39 times; while in the interaction of Dose x Management, with soil chiseling in the layers of 0.1-0.2 and 0.2-0.4 m, P increased by 8.10 and 3.95 mg dm -3 , respectively. In the contrast between the dose zero and manure dose, there was significance for pH, Ca, P and Zn in the layer of 0-0.1 m.Alterações físicas e químicas em solo fertilizado com esterco de galinha em diferentes manejos R E S U M O O esterco de galinha e o manejo mecânico podem influenciar na distribuição de nutrientes no perfil do solo. O objetivo foi avaliar as alterações físicas e químicas no solo com capim Marandu fertilizado com doses de esterco de galinha sem e com uso de escarificador, após 180 dias de aplicação. O delineamento foi em blocos ao acaso com quatro repetições num arranjo fatorial 5 x 2, com cinco doses de esterco (0, 1,037; 2,074; 4,148; 6,222 Mg ha -1 ) sem e com escarificação a 0,20 m. A escarificação favoreceu alterações físicas com aumento de macroporosidade na camada 0-0,2 m e redução de densidade do solo e aumento de macroporosidade e porosidade total na camada 0,2-0,4 m. Com doses de esterco o pH na camada 0-0,1 m teve ajuste quadrático com valor máximo de 7,2. O aumento nos teores de Ca e Zn na camada 0-0,1 m foi, respectivamente, de 0,61 cmol c dm -3 e de 2,99 mg dm -3 . Na interação dose x manejo sem escarificação do solo o K teve ajuste linear com aumento de 1,39 vezes enquanto na interação entre dose x manejo com escarificação nas camadas 0,1-0,2 e 0,2-0,4 m, o P teve aumento de 8,10 e 3,95 mg dm -3 , respectivamente. No contraste entre dose zero com dose de esterco houve significância para pH, Ca, P e Zn na camada 0-0,1 m.

Chicken Manure: An Alternative in Increasing Production of Sweet Potato (Ipomoea batatas)

“…Only the subplot had a significant effect on agronomic parameters, except for the harvest index and diameter (Table 1). Since chicken manure raises the pH of the soil (Eguchi et al, 2016), it was expected that the interaction between plots and subplots would be significant, so that it was possible to find the dose of chicken manure without using liming that would result in maximum profit and another, lower dose, associated with liming. This did not happen, possibly due to the liming function making minerals available (Raij, 2011).…”

Organic Residues and Bokashi Influence in the Growth of Alibertia edulis

“…The larger root area gains were attributed to the addition of organic residues and resulted in a possible improvement in the physical properties of the substrate, such as moisture retention, aeration and lower compaction (Valadão et al, 2011), which have favored root development and expansion. Thus, when added to soil with a mean density of 1.2 dm 3 , these semi-decomposed residues with a density of 0.4-0.6 dm 3 (Kiehl, 2008) lowered the substrate density, resulting in a conditioning effect (Eguchi et al, 2016).…”

“…Poultry manure is characterized by a high nutrient content, low decomposition rate, and conditioning effect when added to the soil; it is therefore a viable alternative in the nutritional dynamics of the soil, mainly because it contains nitrogen in the organic fraction (Eguchi et al, 2016;Rogeri et al, 2016), which favors the use of nutrients by plants during the growth cycle.…”

Extração De Minerais Pelo Capim Marandu Fertilizado Com Esterco De Galinha Sem E Com Escarificação

“…A escarificação do solo rompe camadas compactadas na superfície, reduz a densidade e aumenta a macroporosidade e porosidade total, favorece a aeração e ação de microrganismos sobre o esterco aplicado (Eguchi et al, 2016). A fertilidade do solo e as estratégias de manejo podem resultar em variações na estrutura do dossel no momento do pastejo ou corte com influência no desempenho animal (Pedreira et al, 2009) em decorrência dos seus efeitos nos teores minerais e no valor nutritivo da forragem ofertada e consumida (Trindade et al, 2007;Difante et al, 2009).…”