Efeito da aplicação de água residuária de graxaria em elementos químicos do solo e na produção e composição mineral de duas espécies forrageiras

Pós-graduação em Agronomia (Ciência do Solo) - FCAV

A nominalização como estratégia de relativização em línguas nativas da Amazônia brasileira

This work aims to present some results obtained from a typological research project on relative clauses developed in a sample of Amazonian native languages. These results, which specifically address the distribution of the relativization strategies in the sample, intend to show, on one hand, that the use of nominalization is in fact a compensatory strategy and, on the other hand, that some languages, which use nominalization as a primary strategy of relativization, lack a specific class of adjectives.

Uso e conservação de plantas medicinais nativas por comunidades quilombolas no município de Alcântara, Maranhão

Pós-graduação em Agronomia (Horticultura) - FCA

Liberação de nutrientes da palhada de forrageiras consorciadas com milho e sucessão com soja

In tropical regions there is rapid decomposition of plant material deposited on the soil, and the ability to recycle nutrients through this decomposition is one of the most important aspects of cover crops. The aim of this study was to evaluate the yield and nutrient release from forage crops intercropped with maize for silage, and soybean in succession. The study was conducted in the experimental area of Universidade Estadual Paulista, Ilha Solteira campus, Brazil. The experiment consisted of maize for silage intercropped with four forage species (Urochloa brizantha cv. Marandu, Urochloa ruziziensis, Panicum maximum cv. Tanzania, and Panicum maximum cv. Aries) sown in three modalities: in the maize row, together with fertilizer; broadcast at maize sowing; and broadcast in the V4 stage of maize, in a randomized block design in a 4 x 3 factorial arrangement with four replications. The evaluation of nutrient release was performed during the soybean cropping that followed the intercropping by the litter bag method at 30, 60, 90, and 120 days after sowing of soybean. Panicum maximum cv. Tanzania showed higher dry matter yield when sown by broadcasting at maize sowing. Sowing of forages in the maize row, and through broadcasting at maize sowing led to greater dry matter yield for straw formation. Intercropping of maize with forages in the autumn is an alternative for increasing the amount of straw and cycling of macronutrients in a no-till system. Potassium was the nutrient with the greatest accumulation in the forage straws (up to 150 kg ha(-1)), with 100 % release at 90 days after sowing soybean. The forage straws are thus an excellent alternative for cycling of this nutrient. Panicum maximum cv. Tanzania sown by broadcasting at the time of maize sowing showed greater phosphorus cycling (13 kg ha(-1)). Panicum maximum cv. Tanzania broadcast in the V4 stage of maize is the option with least potential for straw production and nutrient cycling, while the other options (forages and sowing modalities) have higher potential for use, at the criteria of machine availability for setting up intercropping with corn.

Acúmulo de nutrientes e tempo de decomposição da palhada de espécies forrageiras em função de épocas de semeadura

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

Subdoses de glyphosate no desenvolvimento de espécies arbóreas nativas

Recovery of degraded areas aims to provide the degraded environment favorable conditions for restructuring in an environment that is unable to regenerate itself and planting of tree seedlings is one of the effective ways to extend this process. However, native tree species have slow growth rate which increases the seedlings production time as well as decreases their competitiveness with weeds in areas of forests deployment. The aim of this study was to evaluate the effects of glyphosate reduced rates application on Psidium cattleyanum (yellow guava), Citharexylum myrianthum (pau-viola) and Cedrela odorata (cedro) seedlings development by analyzing its morphophysiological parameters. The experiment was carried out in greenhouse conditions and the experimental units consisted of one plant were conducted in 2.5L plastic pots and arranged in a completely randomized design with six replications. Treatments consisted of glyphosate application at 0, 7.5, 15, 30 and 60 g ha(-1) using Scout (R) commercial formulation. Treatments application on these species seedlings was realized 120 days after seeds germination. Visual evaluations of plants phytotoxicity were realized at 7, 14 and 21 days after treatments application and plants survival, stomatal conductance, height, stem diameter and dry mass of shoots were evaluated 90 days after treatments application. Different doses of glyphosate did not cause plants phytotoxicity. Already, 30 and 60 g ha(-1) of glyphosate provided greater increases in height, stem diameter and dry mass of shoots for Citharexylum myrianthum and Psidium cattleyanum, respectively.

Desempenho e uso eficiente da terra de modalidades de consorciação com milho e forrageiras

This study was developed with the aim of evaluating the performance and land use efficiency of different arrangements of intercropping with maize and forage. The field experiment was conducted in Tangar da Serra/MT. The experimental design was a randomized block in factorial scheme 3x2 + 1, were as three arrangements of intercropping, two species of forage and an additional treatment with maize monoculture in four replication. In maize monoculture and intercropping were evaluated: plant height and ear insertion height, plant population, weight of 100 grains, productivity, number of grain rows and number of grain per row. In forages intercropping with maize were evaluated plant population and dry matter accumulation. The arrangements with Maize + Forage sown in the line and Maize + Forage sown in two rows between rows with the species Urochloa hybrid promoted best corn yields. The modality and species affect both the productivity of maize as forages species. Grain yield of maize is higher in monoculture. The higher dry matter accumulation of Urochloa hybrid occurs in the Maize + Forage sown in one row between rows, while, for the Urochloa brizantha the arrangements studied do not affect their yields. The arrangement with best land use efficiency is Maize + Forage sown in two rows between rows for both study forage species.

Viabilidade do recipiente biodegradável na produção de mudas florestais nativas

Pós-graduação em Ciência Florestal - FCA

Desempenho técnico e econômico de forrageiras tropicais em sistema integrado de produção no cerrado de baixa altitude

Pós-graduação em Agronomia - FEIS

Manejo da adubação nitrogenada para a cultura do feijão em sucessão a gramíneas forrageiras cultivadas para produção de sementes

Pós-graduação em Agronomia (Agricultura) - FCA

Antecipação de nitrogênio para a cultura do milho em sucessão a gramíneas forrageiras no sistema plantio direto

Pós-graduação em Agronomia (Agricultura) - FCA

Sementes de leguminosas forrageiras sob estresse salino tratadas com ácido salicílico e espermidina

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

Impacto ecológico, comportamental e fisiológico da bioinvasão sobre populações nativas: o caso do siri invasor Charybdis hellerii

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

Atributos do solo e modalidade de semeadura na consorciação de milho com forrageiras e desempenho agronômico do feijoeiro em sucessão

Pós-graduação em Agronomia - FEIS

Regeneração natural sob talhões puros de espécies nativas com diferentes atributos funcionais

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)