Produtividade da forragem de milho e Capim-marandu integrados em sistema agrossilvipastoril com eucalipto

Pós-graduação em Ciência e Tecnologia Animal - FEIS

Coberturas vegetais e doses de nitrogênio, associadas à inoculação com Azospirillum brasilense, no cultivo do milho na região de Cerrado

Pós-graduação em Agronomia - FEIS

A origem de populações emergentes do patógeno da queima-da-folha (Rhizoctonia solani AG-1 IA) da Urochloa spp. na Amazônia e seu potencial de adaptação a outros agroecossistemas brasileiros

Pós-graduação em Agronomia (Genética e Melhoramento de Plantas) - FCAV

Cultivo de milho verde em sucessão ao arroz no Vale do Ribeira, SP: subsídios para adoção de zonas de manejo

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

Diversidade patogênica em isolados de Thielaviopsis paradoxa provenientes de diferentes áreas produtoras de cana-de-açúcar

Pós-graduação em Agronomia (Genética e Melhoramento de Plantas) - FCAV

Desempenho agronômico de cultivares de cevada cervejeira sob diferentes lâminas de irrigação

The research work aimed to evaluate the performance of barley cultivars under different irrigation depths in Brazilian Cerrado. The experiment was conducted in a split plot completely randomized design, with irrigation depths (50, 75, 100 and 125% of crop evapotranspiration) in the plots and barley cultivars (BRS Sampa, BRS Manduri and BRS 195) in the split-plots, with four replications. Barley cultivars were different regarding number of tillers per plant, number of spikelets per spike, and root depth. The maximum yields for BRS Sampa, BRS Manduri and BRS 195 were 5,848; 5,449; and 4,767 kg ha(-1), respectively. BRS Sampa showed a value 17% higher than the yield reported by the holder. The irrigation depth affected all the agronomic traits. It is recommended BRS Sampa for Brazilian Cerrado, that didn't differ from other cultivars and was developed in region of similar climate; with replacement of 100% of crop evapotranspiration.

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.

Efeitos de produtos alternativos no controle de doenças na videira

Pós-graduação em Agronomia - FEIS

Características de dossel e produção de milho submetido a arranjos espaciais de planta e adubação nitrogenada em plantio direto

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

Sobrevivência de Xanthomonas campestris pv. campestris no solo, no filoplano e na rizosfera de plantas daninhas

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

Desenvolvimento de método de semeadura em sistema de plantio direto para agricultura familiar

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

Avaliação da qualidade de alimentos biofortificados produzidos em sistemas agroecológicos do trópico úmido

Pós-graduação em Engenharia e Ciência de Alimentos - IBILCE

Ação do ácido abscísico na cor das bagas, na qualidade e no armazenamento pós-colheita da uva Rubi

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Avaliação da cultura do milho submetida à hormesis

Under conservation tillage systems is critical to maintaining plant residues from previous crops on the soil surface. A technique called Hormesis aims to increase the amount of straw and also cause a delay in straw decomposition. Therefore, this study aimed to evaluate the agronomic characteristics of corn under no-tillage system subjected to Hormesis. The experiment was carried out at UNESP campus in the city of Botucatu, SP . The experimental was design in completely randomized blocks. The treatments based on the technique of Hormesis were : control (no application) , sub Gliphosate low dosage (12.5 g.ai.ha - 1 ) , sub Gliphosate average dosage (25 g. ai.ha - 1 ) , sub Gliphosate high dose (50 g. ai.ha -1 ), 2,4-D under low dose (100 g. ai.ha -1 ), 2,4-D sub average dosage (200 g. ai.ha -1 ) 2,4- D under high dosage (300 g. ai.ha -1 ) sub Verdict low dose (0.625 g. ai.ha -1 ) sub Verdict average dosage (1.25 g. ai.ha -1 ) , sub Verdict high dosage (2.5 g. ai.ha - 1 ) . In addition, the following characteristics were evaluated: plant height, first ear growth, stem diameter , ear length , number of rows per cob, cob diameter , , percentage of grains on the cob , mass of plant dry matter, and yield. The results showed that all the treatments showed no statistical difference, the maize was not affected with sub doses of herbicides applications under the field and weather conditions in which the experiment was conducted.

Parcelamento de fontes alternativas de nitrogênio no milho safrinha em sucessão à soja

Increasing out-of-season corn productivity is possible by the application of nitrogen fertilizers even when in succession to soybean. On the other hand, information concerning the best sources of nitrogen and ways of splitting the doses to be applied is still scarce. Having that in mind, an experiment was carried out viewing to evaluate the effects of sources of nitrogen and ways of splitting doses of those N fertilizers on out-of-season corn sown in succession to soybean cultivated in a no-tillage system. The experiment took place in Chapadão do Céu, state of Goiás, Brasil (latitude of 18°35’42’’ South, longitude of 52°47’59’’ West and mean altitude above sea level of 802 m) in an Acrutox. The experimental units were distributed in the field in accordance with a randomized complete block design, in a factorial scheme 3 X 5 + 1, with four replications. Three were the sources of N: urea, urea extruded with starch (Amireia®) and ammonium sulfonitrate with a nitrification inhibitor (Entec®) and five the ways of splitting the nitrogen dose : 90-0, 60-30, 45-45, 30-60, and 0-90 in which the first fraction was applied at sowing and the second in side dressing. In addition to those, there was a check treatment, without N. All plots received, at sowing, 12 kg ha-1 of N by the mixture NPK. The ways of splitting the N dose and the sources of N had no significant effect on the levels of N and S in the leaves, first ear height, the final plant population, the number of ears per plant, and the number of grains per ear. N in the Entec® form at the highest doses applied in side dressing resulted in the highest grain yield, independently of the way the N dose was split. Only in the form Entec® the dose of 90 kg ha-1 of N increased grain productivity by 9.6% in comparison with the check treatment.