Efeito do silício aplicado no solo e em pulverização foliar na incidência da lagarta do cartucho na cultura do milho

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Efeito do aumento da concentração de co2 atmosférico sobre o oídio, a ferrugem e o desenvolvimento de plantas de soja

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Influência de sistemas de semeadura na população de pragas e nas características morfofisiológicas em cultivares de soja

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

Controle da ferrugem asiática da soja (Phakopsora packyrhizi) com óleo de café e bacillus spp

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

Efeito do tratamento químico na qualidade sanitária e fisiológica de sementes de soja infectadas por Sclerotinia sclerotiorum

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

Efeito de óleos essenciais sobre o fungo Phomopsis sojae e a qualidade fisiológica de sementes de soja

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

Controle do percevejo castanho (Scaptocoris castanea Perty, 1830 (Hemiptera: Cydnidae)) na cultura da soja (Glycine max (L.) Merrill)

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

Resistência de genótipos de soja Glycine max (L.) a Piezodorus guildinii (Westwood)(Hemiptera: Pentatomidae)

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

Estudo da influencia do potássio e do cálcio na reprodução do nematoide do cisto da soja

The objective of this work was to evaluate the reproduction of the soybean cyst nematode (SCN) in soybean plants in substract with different potassium (K) and calcium (Ca) doses. The experiment was conducted in a completely randomized block design, with 25 treatments and six replicates. A factorial scheme (5 x 5) was used with five K doses (0; 150; 300; 450; and 600 mg / dm3 ) and five Ca doses (0; 75; 150; 225; and 300 mg / dm3 ). Eighteen days after sowing, plants were inoculated with 4,000 H. glycines race 3 eggs. Thirty days after inoculation a total of three weekly evaluations were performed measuring plant height and stem diameter. Seventy days after inoculation, the following variables were analyzed: measurement of leaf blade, numbers of eggs / pot, cysts / pot, eggs / cyst, females and cysts / root system, eggs / female and the reproduction factor of H. glycines. Root and shoot dry matter were weighed. Then, K and Ca shoot contents of each sample was obtained. There was a significant interaction between K and Ca doses only for number of eggs / female. The K doses significatively influenced the numbers of cysts / pot, eggs / cyst, eggs / pot, females and cysts / root system and reproduction factor. The Ca doses did not influence significatively the nematologic variables analyzed. The K-Ca interaction affected all crop-related variables analyzed. A significative K-Ca interaction was observed for Ca contents in shoot dry matter. The K contents were only influenced by potassium doses amended to the soil.

Caracterização fisiológica de genótipos de soja submetidos ao estresse salino

Salinity, ever present in agricultural soils, affects plant productivity. However, there are species more tolerant than others, and the study of response mechanisms to salinity is necessary in order to elucidate which responses are correlated with tolerance to salinity. Thus, we aimed at physiologically characterizing two Glycine max L. genotypes concerning saline stress, and identify which variables are more correlated with tolerance to salinity. For this, plants of cultivars AS 3730 and M 8372 were submitted to three saline concentrations (0, 50 and 100 mM), having sampled 0, 8 and 16 days. We conducted analysis for growth, enzymatic and non-enzymatic antioxidant metabolism, photosynthesis beyond the content of chlorophyll a and b, carotenoids, total soluble sugars, reducing sugars, proteins and proline. A results, cultivar M 8372 presented better growth, higher antioxidant enzyme activity and higher content of antioxidants such as ascorbate and carotenoids, when compared to cultivar AS 3730. In addition, cultivar M 8372 also presented lower levels of lipid peroxidation. However, cultivar AS 3730 obtained higher contents of proline, an osmoprotector and lower growth compromise when compared to its control. In conclusion, there is a differential response of the cultivars to salinity.

Extrato metanólico de folhas de mandioca como alternativa ao controle da lagarta-do-cartucho e de formigas cortadeiras

The objective of this study was to characterize phenolic compounds and evaluate the effect, under laboratory conditions, of the cassava leaf powder methanol extract on the development of fall armyworm Spodoptera frugiperda and of leaf-cutting ant Atta sexdens rubropilosa. The extract was incorporated into an artificial diet, to which the armyworm was exposed, at concentrations of 250, 500, 1000 and 1500 mg kg-1,in order to evaluate biological characteristics. Soon after the insects emergence, another experiment was conducted to verify the possible sub lethal activity of the extract; therefore, S. frugiperda couples were isolated in cages and eggs were collected and counted. The Manihot esculenta Crantz extract caused a reduction in the percentage of armyworm survival, as well as in the eggs number. Then, the same extract was solubilized in 10% ethanol and applied to ants; mortality was observed, compared to the control. It is possible to conclude that the M. esculenta Crantz leaf powder methanolic extract, containing gallic acid and catechin, is a promising alternative to control S. frugiperda and Atta sexdens rubropilosa.

Caracterização das interações moleculares em blendas ternárias etanol/biodiesel/óleo de soja na região de miscibilidade por espectroscopia de impedância e Infravermelho

Pós-graduação em Química - IBILCE

Avaliação da ocorrência de fitoestrogenos de soja em efluente de estação de tratamento de esgoto, água superficial e subterrânea da cidade de Araraquara

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Avaliação e adaptação das condições da EN 14103 para quantificação de ésteres em biodieseis etílicos puros de soja, babaçu, palma e sebo bovino e em suas misturas

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Efeito da adição da asolctina e fosfatidilcolina de soja em meio à base de gema de ovo sobre os parãmetros espermáticos e fertilidade de sêmen congelado de garanhões

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)