Implantação de arborização em via pública: aspectos fenológicos, locacionais e sociais

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Utilização de lodo de efluente doméstico: efeitos na produtividade agrícola e em alguns aspectos ambientais

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

Potencialidade do uso do lodo de esgoto como fonte de macronutrientes no cultivo de milho (Zea mays L.), no município de Maringá - PR

Pós-graduação em Agronomia (Energia na Agricultura) - FCA

Disposição de lodo de esgoto: acúmulo de metais pesados no solo e em plantas de milho (Zea mays L.)

Pós-graduação em Agronomia (Energia na Agricultura) - FCA

Manejo do solo com lodo de esgoto na produção e qualidade de frutos em bananeira irrigada

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

Eficiência do uso da água residuária e do lodo de esgoto compostado nas propriedades químicas e físicas de solo cultivados com laranjeiras

Pós-graduação em Agronomia (Irrigação e Drenagem) - FCA

Efeito de efluente de esgoto tratado e lodo de esgoto compostado no solo e nas culturas de trigo e soja

Pós-graduação em Agronomia (Irrigação e Drenagem) - FCA

Impacto do lodo de esgoto na comunidade bacteriana do solo: avaliação por microarranjo de DNA

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Efeito do lodo de esgoto sobre a atividade microbiana e fitopatógenos habitantes do solo

Pós-graduação em Agronomia (Proteção de Plantas) - FCA

Induction of suppressiveness to Fusarium wilt of chrysanthemum with composted sewage sludge

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

Root system and root and stem base organic reserves of pasture Tanzania grass fertilizer with nitrogen under grazing

The goal of this study was to evaluate the concentrations of non-structural carbohydrate (NSC) and of total nitrogen (N), as well as, to evaluate the root system in Tanzania-grass pastures fertilized with doses of urea in fall, spring and summer. The experiment was conducted at the Experimental Farm of Iguatemi, Maringa, Parana, Brazil, from March 2007 to March 2008. The experimental design was complete random blocks with subplots and four repetitions. The plots showed doses of N (50, 100 e 150 kg ha(-1) of N) plus the control (no N fertilization), and the subplots the season of the year. Root samples were taken at depths of 0-10, 10-20 and 20-40 cm. Root biomass showed a trend for mass accumulation up to a dosage of 100 kg ha(-1) for all seasons evaluated. Also, about 80% of the root system of Tanzaniagrass plants was found on the 0-10 cm layer for all dosages of N. Nitrogen fertilizer above 100 kg ha(-1) may foster fast forage plant growth reducing its NSC root storage capacity although favoring NSC and total N storage at stem base. NSC and total N concentrations were highest in fall, demonstrating that its usage is greater in spring due to the weather conditions being favorable to plant growth. In the regrowth, the largest reserve of total N was at the 0-10 cm root layer and the largest NSC reserve is at stem base.

Growth and flowering of miltonia flavescens lindl. var. stellata regel orchid under different doses of a slow release fertilizer

The Orchidaceae is one of the most numerous and diversified families in the Plant Kingdom. Miltonia flavescens Lindl. is a native orchid to the southern region of Brazil. Studies related to the nutrition and fertilization of orchids are scarce, specific and existent only for few species. The objective of this work was to evaluate the effect of different doses of a slow release fertilizer (Osmocote (R) 9/15/12 + micro) on the development of M. flavescens var. stellata Regel cultivated in pots with pine bark and coconut fiber (1:1, v:v) as the substrate. The treatments consisted of: no fertilizer application (control), application of 2.5 g, 5 g and 10 g of fertilizer per liter of substrate. The experimental design was set in randomized blocks, with five replications and three plants per plot. The experiment was carried out along 25 months and the fertilizer was applied every five months. The evaluated plant parameters were: length of the longest pseudobulb, number of pseudobulbs, diameter of pseudobulbs, number of shoots, number of leaves and flowering. There was a significant increment on all evaluated characteristics with the increase of the fertilizer dose. The highest dose provided a more profuse flowering, with a larger number of flower stems and flowers, in addition to bigger flower stems and flowers. These results show that the supply of nutrients in an appropriate amount is of a great importance for the development and flowering of M. flavescens.

Manejo do lodo de esgoto e nitrogênio mineral na fertilidade do solo ao longo do tempo

The use of sewage sludge is a practice highly promising for the development of sustainable agricultural systems. The objective of this study was to assess the improvement in soil fertility management strategies on different sewage sludge and mineral nitrogen after seven application of this residue. The experiment was carried at the Sao Manuel Experimental Farm belonging to the faculty of Agronomic Sciences of UNESP, Botucatu, located in the county of Sao Manuel. It was adopted the experimental design in a randomized blocks consisting of six treatments and five repetitions defined as follows: T0 - without nitrogen fertilizer, T1 - mineral fertilizer nitrogen according to the crop needs, T2 - 50% nitrogen from sewage sludge and 50% in the form of chemical fertilizer, T3 - 100% of nitrogen recommended by the culture, from sewage sludge, T4 - 150% of nitrogen recommended by the culture, from sewage sludge and T5 - 200% of the nitrogen from the sewage sludge. It has done seven application of sewage sludge in crop ( year 1 - sunflower, year 2 sunflower, year 3 - oats and bean, year 4 - triticale and sunflower, year 5 - wheat) and the first three applications were treated with sewage sludge and the other applications were composted sludge. In the depth 0-20 cm, the sewage sludge promoted an increase in levels of organic matter, P, S, H+Al, CEC and decreased in soil pH. In the depth of 20 to 40 cm the sewage sludge promoted a decrease in pH and increase in soil organic matter, P, H+Al, K, Ca, SB, CEC and S. Mineral N influence the increase in the depth S of 20-40 cm.

Cádmio, cobre e cromo em solo e plantas de milho após quinze anos de aplicações anuais de lodo de esgoto

Pós-graduação em Agronomia (Produção Vegetal) - FCAV