Huezer Viganô Sperandio

BIOSSOLIDO COMO SUBSTRATO PARA PRODUÇÃO DE MUDAS DE Toona ciliata VAR. australis

The demand for wood for various purposes increases dramatically to meet the demand and need to produce forest seedlings in quantity and quality, to establish good stands. In this sense, the success of forest plantations is not linked solely to the species used, but directly depends on the type of container, the quality of seeds and substrate used. The objective of this work was to evaluate the influence of biosolids as substrate for the production of seedlings of Australian cedar (Toona ciliata). The experiment was conducted in a greenhouse at forest nursery/CCA / UFES. The experimental design was completely randomized, consisting of six treatments with biosolids, in decreasing proportions associated with subsoil, and two treatments without the use of biosolids (manure + soil and commercial substrate, respectively), with 8 repetitions. In general, the best results for the morphological analysis were obtained using 100 to 70% of biosolids in the substrate. Therefore, the biosolids can be considered suitable for the growth of seedlings of Toona ciliata which demonstrates a viable alternative for disposal of this waste.

ATRIBUTOS FÍSICOS DO SOLO EM ÁREA SOB COLHEITA FLORESTAL SEMIMECANIZADA NO ESTADO DO ESPÍRITO SANTO

O Estado do Espirito Santo apresenta grande potencial as atividades silviculturais, contudo, o relevo e predominantemente montanhoso, viabilizando assim, no momento da colheita florestal, somente a metodologia semimecanizada. Este trabalho teve por objetivo avaliar a influencia da colheita semimecanizada nos atributos fisicos do solo, em povoamento de eucalipto implantado no municipio de Santa Teresa, ES. Antes e depois da colheita avaliaram-se os seguintes atributos: granulometria, densidade do solo, densidade de particulas, porosidade total e taxa de infiltracao estavel. Constatou-se que nao ocorreu diferenca estatistica entre os atributos avaliados antes e depois da colheita.

INTERPOLAÇÃO DOS PARÂMETROS DO BALANÇO HÍDRICO CLIMATOLÓGICO CONSIDERANDO DIFERENTES CAPACIDADES DE ÁGUA DISPONÍVEL NO SOLO

O balanco hidrico climatologico proposto por Thornthwaite & Mather (1955) e uma ferramenta de extrema utilizadade para o planejamento agricola. Este metodo requer o conhecimento da capacidade de agua disponivel no solo (CAD), precipitacao e evapotranspiracao potencial (ETP) como dados de entrada. As saidas consistem em deficit hidrico (DEF), excedente hidrico (EXC) e evapotranspiracao real (ETR). Todavia, os valores assumidos pela CAD alteram significativamente nos valores de DEF, EXC e ETR. O objetivo deste trabalho foi avaliar metodos de interpolacao espacial destinadas a criar mapas de EXC, DEF e ETR, obtidos por meio do BHC, considerando seis diferentes valores para a CAD (25, 50, 75, 100, 125 e 300 mm), no Espirito Santo. Os resultados mostram que o metodo de krigagem ordinaria (modelo exponencial) apresentou melhor desempenho para a espacializacao dos parâmetros DEF, EXC e ETR em todos os valores de CAD considerados

Biomassa e o teor de nutrientes em diferentes compartimentos acima do solo de Mimosa velloziana Mart e Tephrosia candida D.C.

A Recuperacao de uma area consiste em torna-la novamente produtiva, seja para fins de conservacao ou producao. E necessario assim, gerar conhecimento sobre tecnicas para adequar procedimentos e tecnicas para esta finalidade. Diante disso, este estudo teve por objetivo avaliar a biomassa e o teor de nutrientes em diferentes compartimentos acima do solo em duas especies de leguminosas ( Mimosa velloziana Mart e Tephrosia candida D.C.) e uma Floresta de Tabuleiros. As leguminosas e a Floresta de Tabuleiro estao estabelecidas sob Argissolo Amarelo Distrocoeso em Linhares, ES. A biomassa acima do solo das leguminosas foi compartimentalizada em: folhas, ramos e ramos secos para Mimosa e folhas, galhos com diâmetro superior e inferior a 2 cm, e galhos secos, para a Tefrosia. Avaliou-se ainda a serapilheira acumulada nas leguminosas e na Floresta de Tabuleiros e seus nutrientes, na estacao chuvosa e seca. Verificou-se que a Tefrosia apresentou a maior producao de biomassa acima do solo, sendo compartimentalizado nas folhas, os maiores teores de nutrientes. A biomassa da serapilheira acumulada nao foi influenciada pelas estacoes de seca e chuva, sendo encontrado maior valor na area com Mimosa. O nitrogenio foi o nutriente com maior teor na serapilheira, seguido por calcio > magnesio > potassio > fosforo > manganes > boro > zinco > cobre.

Evaluationof water erosionchanges insurfacesoilin different plant cover of Awatershedin Alegre, ES

Erosion is the process of detachment, drag and deposition of soil particles, which caused the loss of productive capacity of soils, siltation, and eutrophication and the loss of quality of surface waters. Keep this degradation process at tolerable levels is a major environmental concerns with this work aimed to evaluate the losses of soil in a pasture and forest regeneration through a simple temporal and economically – Pin Method. The study consisted of two experimental plots located in the watershed of the Rio Jacare, Alegre – ES, with 108 square meters each, under different cover crops, pasture and natural forest regeneration. Methodology by changing the surface of the soil, dug up 40 stakes in the ground, where he proceeded to read monthly. It was observed an average loss of 6.08 Mg ha-1 month-1 and 3.34 Mg ha-1 month-1 soil, pasture and regeneration, respectively. The average reading of the stakes in the pasture was 51,85% higher than in regeneration.

Evaluation of water erosion changes in surface soil in different plant cover of a watershed in Alegre, ES.

Erosion is the process of detachment, drag and deposition of soil particles, which caused the loss of productive capacity of soils, siltation, and eutrophication and the loss of quality of surface waters. Keep this degradation process at tolerable levels is a major environmental concerns with this work aimed to evaluate the losses of soil in a pasture and forest regeneration through a simple temporal and economically – Pin Method. The study consisted of two experimental plots located in the watershed of the Rio Jacare, Alegre – ES, with 108 square meters each, under different cover crops, pasture and natural forest regeneration. Methodology by changing the surface of the soil, dug up 40 stakes in the ground, where he proceeded to read monthly. It was observed an average loss of 6.08 Mg ha-1 month-1 and 3.34 Mg ha-1 month-1 soil, pasture and regeneration, respectively. The average reading of the stakes in the pasture was 51,85% higher than in regeneration.

Avaliação da erosão hidrica pela alteração na superfície do solo em diferentes coberturas vegetais de uma sub-bacia hidrográfica no Município de Alegre, ES

Erosion is the process of detachment, drag and deposition of soil particles, which caused the loss of productive capacity of soils, siltation, and eutrophication and the loss of quality of surface waters. Keep this degradation process at tolerable levels is a major environmental concerns with this work aimed to evaluate the losses of soil in a pasture and forest regeneration through a simple temporal and economically – Pin Method. The study consisted of two experimental plots located in the watershed of the Rio Jacare, Alegre – ES, with 108 square meters each, under different cover crops, pasture and natural forest regeneration. Methodology by changing the surface of the soil, dug up 40 stakes in the ground, where he proceeded to read monthly. It was observed an average loss of 6.08 Mg ha-1 month-1 and 3.34 Mg ha-1 month-1 soil, pasture and regeneration, respectively. The average reading of the stakes in the pasture was 51,85% higher than in regeneration.