RESUMOA criação intensiva de frango gera uma grande quantidade de resíduos ricos em nutrientes cujo uso agrícola pode ser viabilizado pelos produtores, na adubação das culturas comerciais. Objetivou-se avaliar a influência da fertilização com cama de frango na recuperação física de um Latossolo. O experimento foi instalado em um Latossolo Vermelho Distrófico típico, textura média, sob pastagem degradada de Brachiaria decumbens Stapf. Os tratamentos estudados foram: 0, 1.200, 2.400, 4.800 kg ha -1 de cama-frango e 2.400 kg ha -1 de cama-frango + adubação mineral com 36 kg ha -1 N, 60 kg ha -1 K 2 O e 60 kg ha -1 de P 2 O 5 . As aplicações foram realizadas em janeiro de 2004 e o solo amostrado em duas épocas distintas (60 e 210 dias após aplicação), nas profundidades de 0-20 e 20-40 cm, para a caracterização dos atributos físicos: argila dispersa em água, grau de floculação, densidade do solo e porosidade total. O teor de argila dispersa em água decresceu com o aumento das doses de cama aplicadas e, conseqüentemente, houve um incremento no grau de floculação; houve uma pequena redução na densidade do solo e na porosidade total. Os atributos físicos do solo avaliados responderam com maior intensidade às aplicações de cama de frango nas doses variando de 2.666 a 3.750 kg ha -1 . Termos para indexação:Atributos físicos do solo, adubação orgânica, cama de aves. ABSTRACTPoultry facilities generate great amount of residues rich in nutrients, which may be used by farmers to fertilize their crops. The aim of this work was to evaluate the effect of the fertilization with chicken manure on the physical recovery of the structure of a Latosol. The experiment was carried out in a loamy typic dystrophic Red Latosol, at Brachiaria decumbens Stapf. degraded pastureland. The treatments were: 0; 1,200; 2,400; 4,800 kg ha -1 of chicken manure; and 2,400 kg ha -1 of chicken manure + chemical fertilizer with 36 kg ha -1 N; 60 kg ha -1 of K 2 O; and 60 kg ha -1 of P 2 O 5 . The treatments were applied in January 2004. Sixty and 210 days after, the soil was sampled at the 0-20 and 20-40 cm depths. The physical attributes measured were: water dispersible clay, flocculation index, bulk density and total porosity. The water dispersible clay decreased with the increase of the dosage of manure applied; there was an increase in the flocculation index as the manure doses increased. There was a small reduction in soil bulk density and total porosity with the application of manure. The soil physical attributes evaluated were greatly affected by applications of chicken manure in the dose range of 2,666 to 3,750 kg ha -1 .

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Application of organic wastes in sugarcane (Saccharum officinarum) is an alternative possibly replacing or supplementing mineral fertilizers. This study aimed to evaluate the effects of poultry litter, organo-mineral fertilizer and mineral fertilizer on soil chemical properties, yield and plant content of macronutrients in sugarcane. The experiment was conducted at the Jalles Machado Mill in Goianésia-GO, from July 2009 to April 2010, as randomized complete blocks design (RCBD). The mineral fertilizer was applied at the following doses: 66; 120 and 82 kg ha -1 of N, P 2 O 5 and K 2 O, respectively; poultry litter and organ-mineral fertilizer were applied at doses of 3.0, 6.0 and 9.0 t ha -1 , in addition to the control (no fertilization). The following variables were analyzed: organic matter, macronutrients in soil and leaves and sugarcane yield. The productivity of sugarcane was higher with poultry litter and organo-mineral fertilizer in relation to mineral fertilization, and organo-mineral fertilization was superior to poultry litter. There was an increase in soil phosphorus levels in soil by fertilizing with poultry litter and organomineral fertilizer. Levels of soil K, Ca, Mg contents, acidity and soil organic matter, and levels of macronutrients in sugarcane did not change by the application of poultry litter and organo-mineral fertilizer comparing with mineral fertilizer. The use of organo-mineral fertilizer, as well as pure poultry litter is recommended.

RESUMORecentemente, tem ocorrido um grande aumento na produção de aves, com destaque para a carne de peru, motivado pelo aumento das exportações e a conquista de novos mercados. Como conseqüência, tem sido gerada uma grande quantidade de resíduos orgânicos com potencial impacto sobre o ambiente. A cama de peru constitui-se no principal resíduo dessa atividade avícola, e uma das formas de sua utilização é a sua disposição em solos como condicionador de suas características físicas e químicas. Assim, objetivou-se com este trabalho avaliar o efeito da aplicação da cama de peru na estabilidade de agregados de um Latossolo Vermelho Distrófico típico, sob pastagem de Brachiaria decumbens, localizado em Uberlândia, no Triângulo Mineiro, Minas Gerais. A cama de peru foi aplicada nas dosagens de: 0 (controle), 1.200, 2.400 e 4.800 kg ha -1 e 2.400 kg ha -1 + adubação mineral (36 kg ha -1 N, 60 kg ha -1 K 2 O e 60 kg ha -1 de P 2 O 5 ). As aplicações foram realizadas em janeiro de 2004 e o solo amostrado em duas épocas distintas (60 e 210 dias após aplicação) nas camadas de 0-20 e 20-40 cm para análise da estabilidade de agregados, avaliada pela percentagem total de agregados, percentagem de agregados maiores que 2mm, menores que 0,25mm e diâmetro médio geométrico (DMG). Não houve efeito das dosagens de cama de peru aplicadas na agregação do solo, entretanto, independentemente da dose aplicada houve um aumento na estabilidade de agregados, ao longo do tempo, notadamente na camada de 0-20 cm.Termos para indexação: Estrutura do Solo, Agregação do Solo, Resíduos Orgânicos. ABSTRACTRecently, there has been occurring a great increase in poultry production, especially in turkey s meat, motivated by the increase of exports and conquest of new markets. As a consequence, a great amount of organic residues has been generated, providing potential impact on the environment. Turkey litter is the main residue from such activity, and has been used as soil conditioner, intended to improve physical and chemical characteristics. Therefore, the objective of this work was to evaluate the effect of turkey litter application in aggregate stability of a Typic dystrophic Red Latosol, under pasture of Brachiaria decumbens, located in Uberlândia, Triângulo Mineiro, Minas Gerais State. Turkey litter was applied in the following dosages: 0 (control), 1,200; 2,400 and 4,800 kg ha -1 and 2,400 kg ha -1 + mineral fertilizer (36 kg ha -1 N, 60 kg ha -1 K2O and 60 kg ha -1 of P 2 O 5 ). The applications were accomplished in January 2004, and the soil was sampled in two different times (60 and 210 days after application) in layers of 0-20 and 20-40 cm for aggregate stability analysis, evaluated through the total percentage of aggregates larger than 2 mm, smaller than 0.25 mm and Geometric Mean Diameter (GMD). There was no effect of turkey litter dosages in soil aggregation. However, independently of the applied dose, there was an increase in the aggregate stability along time, especially in the 0-20 cm layer.

A rocha verdete é uma fonte possível de utilização como fertilizante potássico, com concentração de 13% de K 2 O total, rocha pelítica rica em ilita com glauconita (filossilicato hidratado de potássio e ferro, do grupo da mica). Porém há uma limitação para melhorar sua disponibilização, sendo assim objetivou-se caracterizar o verdete quanto ao potencial de utilização agrícola, observar se ocorrerá aumento da disponibilidade de potássio, cálcio, magnésio quando o verdete for submetido a diferentes doses de ácido húmico e ácido fosfórico. INCUBATION OF VERDETE WITH ACID TO DIFFERENT SOURCES AVAILABLE POTASSIUM, CALCIUM, SOIL MAGNESIUM ABSTRACTThe verdete rock is a possible source for use as a potassium fertilizer, with a concentration of 13% total K 2 O, rich pelitic rock illite with glauconite (phyllosilicate hydrated potassium and iron, mica group). But there is a limitation to improve its availability, so the objective was to characterize the verdigris of the potential of agricultural use, see if occur increased availability of potassium, calcium, magnesium when the verdete is subjected to different doses of humic acid and phosphoric acid . Incubation tests were conducted in jars with polyurethane use Dystrophic Red clayey, which were incubated treatments of different doses of phosphoric acid; phosphoric acid + humic acid; humic acid, and increasing the range the 235 to 1.000%. The test was conducted for 90 days, two samples were taken at 45 days and 90 days after hatching. Carried out to determine the potassium content according to the methodology described by EMBRAPA (2009). Was no effect on the availability of potassium in the different treatments and dosages of acids. Potassium release was higher when using humic acid exclusively. However, there was effect of the use of phosphoric acid and phosphoric acid + Humic acid. Calcium compared to the control we observed an increase 53-75%. And magnesium showed behavior similar to calcium. Thus it was concluded that verdigris presented to a source of potassium, increased solubility when subjected to attack by the acids tested. The humic acid was the source of acid that provided the best K. There effects of acid doses in providing K, Ca and Mg by verdete Rock.