Karine Fuschter Oligini

Bio: Karine Fuschter Oligini is an academic researcher from Federal University of Technology - Paraná. The author has contributed to research in topics: Sowing & Silage. The author has an hindex of 3, co-authored 19 publications receiving 32 citations.

Row arrangements of maize and soybean intercrop on silage quality and grain yield.

Abstract: The success of maize + soybean intercrop depends on the plant arrangement. An experiment was carried out to evaluate different row arrangements on intercrop forage yield, silage quality and maize grain yield in relation to maize as a sole crop. The experiment was set up with a randomized complete block design with eight row arrangements between maize and Soybean. Maize biomass yield among crop arrangements were similar, although, lower than the maize sole crop. On the other hand, these treatments showed higher soybean biomass yield, which in turn increased silage crude protein and crude protein yield per unit area. Maize thousand grain weight, grain yield per plant and per area was affected by the intercrop arrangements. The use of two corn rows + two soybean rows (2M+2S-30 cm) and four corn rows + four soybean rows (4M+4S-30 cm) showed higher crude protein yield per area associated with similar maize grain yield in relation to the sole maize crop. In conclusion, alternating four maize rows with four soybean rows was the optimum row ratio in maize + soybean intercrop, though this needs to be further confirmed by more trials.

Forage Yield and Silage Quality of Intercropped Maize+Soybean With Different Relative Maturity Cycle

Abstract: The success of maize+soybean intercrop depends on the correct synchronism between species phenological stages at the silage point. Due to it, the experiment was carried out to evaluate maize+soybean intercrop forage yield and silage quality using crops with different maturity cycle combination. The experiment used a randomized complete block design with a 2 × 3 factorial scheme. Treatments consisted of two maize hybrids (1: P1630YHR-early cycle and 2: middle cycle P30F53VYHR) and two soybean cultivars (P95R51-maturity cycle of 5.1; TMG7062-maturity cycle of 6.2) and one control represented by maize monocrop. Silage harvesting was performed when maize had reached 2/3 milk line stage. Intercropping soybean into maize did not affect its biomass yield. Both soybean cultivars present compatible cycles for ensiling together with maize hybrids, since they were in phenological stages from R5.3 to R7 by the time maize was at its optimum stage for ensiling. There was interaction between species for the soybean biomass yield. Maize hybrid P30F53 produced higher biomass yield than P1630 what also resulted in higher amount of total crude protein yield. Intercrop P1630-P95R51 produced 458 Kg ha-1 of crude protein more than maize monocrop. Maize+soybean intercropping system results in higher silage crude protein percentage and yield per area (Kg of CP ha-1).

Patologia e germinação de sementes de angico-vermelho (parapiptadenia rígida (benth) brenan) e potencial de óleos essenciais no controle de rhizoctonia sp. in vitro e no tratamento de sementes

Abstract: As sementes de angico-vermelho sao vulneraveis ao ataque de patogenos, e atualmente busca-se produtos alternativos para o controle destes patogenos. O Objetivo do estudo foi avaliar a patologia e germinacao de sementes de angico-vermelho, e verificar o potencial dos oleos essenciais de guacatonga, melaleuca, pitanga e chia, no controle de Rhizoctonia sp. Estudo foi conduzido na Universidade Tecnologica Federal do Parana. Aplicou-se teste de sanidade de sementes e teste de germinacao. Foi realizado analise no controle de Rhizoctonia sp. i n vitro , utilizando os oleos essenciais e na sequencia inoculacao das sementes com o patogeno, sendo as sementes tratadas com os oleos essencias e realizado novo teste de germinacao. Verificou-se a presenca de Aspergillus sp. , Penicillum sp. , Colletotrichum sp. , Fusarium sp. , e Rhizoctonia sp. nas sementes, as quais apresentavam germinacao inicial de 83%. O oleo de melaleuca proporcionou menor desenvolvimento de Rhizoctonia sp. i n vitro e maior germinacao de sementes. O oleo de chia apresentou desenvolvimento superior do patogeno, em relacao ao tratamento testemunha, e maior porcentagem de sementes nao germinadas.

Densidade de plantas e doses de nitrogênio no cultivo de milho safrinha no Paraná

Abstract: Varios fatores interferem na produtividade da cultura do milho ( Zea mays L.), destacando-se densidade de plantas e dose de nitrogenio (N). Objetivou-se, com este estudo, avaliar a interferencia de densidades de plantas e doses de N, no cultivo de milho safrinha em Dois Vizinhos – PR. Foram avaliadas duas densidades de semeadura (45.000 e 55.000 plantas ha -1 ) e quatro doses de N (0, 50, 100 e 150 kg ha -1 ). Utilizou-se o delineamento em blocos ao acaso com parcelas subdivididas. A semeadura foi realizada em 15 de janeiro de 2015, utilizando o hibrido Dow AgroSciences 2B587Hx. As doses de N foram aplicadas em cobertura, quando as plantas estavam em estadio vegetativo V4. Foram avaliados os seguintes caracteres agronomicos: diâmetro do colmo, altura da primeira espiga, altura de planta, estande de plantas, quantidade de espigas, porcentagem de restolhos, fileiras por espiga, graos por fileira, massa de 1.000 graos e produtividade. Os dados foram submetidos a analise de variância, e, quando significativo, aplicou-se teste de media para as densidades e analise de regressao para as doses de N. Nao foi constatada interacao entre os fatores avaliados, porem o aumento da dose de N proporcionou acrescimo linear no diâmetro do colmo, altura de plantas, altura de insercao da espiga, massa de 1.000 graos e produtividade. A densidade de 55.000 plantas ha -1 resultou em menor diâmetro do colmo e numero de graos por fileira, mas apresentou estande de plantas superior, com maior quantidade de espigas e consequentemente, maior produtividade de graos, sendo adequada a cultura.

Revista Brasileira de Ciência do Solo

Abstract: Resumen en: The aim of this study was a survey of the estimated costs of soil erosion, an issue of fundamental importance in view of the current worldwide discussion...

The carbon footprint of alternative jet fuels produced in Brazil: exploring different approaches

Abstract: Although the potential of Alternative Jet Fuels (AJF) to reduce greenhouse gases (GHG) emissions has been widely reported upon in the literature, there are still discrepancies among the results. These may be due to the different GHG accounting methods, including those used by different Low-Carbon Policies (LCPs). To have a clearer understanding of the life cycle performance of AJF, the carbon footprint of ten pathways was estimated, comprising promising feedstocks – such as soybean, palm, sugarcane, sugarcane residues, forestry residues, used cooking oil, beef tallow, and steel off-gases – and ASTM-approved technologies: Hydroprocessed Fatty Acids, Alcohol-to-Jet, and Fischer-Tropsch. Six methodological approaches were used: the attributional and the consequential life cycle assessment, as well as guidelines for the four LCPs: Renovabio (Brazil), CORSIA (aviation sector), RFS (United States), and RED II (Europe). Soybean-based pathway (24 to 98.7 gCO2e/MJ) had the low to no potential for reducing GHG when compared to their fossil counterparts, mainly due to land use change. Of all food-based pathways, AJF produced from sugarcane performed the best (-10.4 to 43.7 gCO2e/MJ), especially when power surplus was credited. AJF from palm oil could present significant GHG reduction for palm expansion in degraded pasturelands. By contrast, Fischer-Tropsch of lignocellulosic residues showed the highest potential for reducing GHG (-95% to -130%). Different from food-based pathways, the potential GHG reduction of residues-based pathways converged within a narrower range (-130% to -50%), except when residual feedstocks have to be redirected from their current economic use. It could lead to GHG emissions higher than fossil fuel.

Interação de nitrogênio e zinco na produção de milho

Abstract: A corn crop is responsible for increasing the nutritional management function and for that reason, the work aimed to evaluate the influence of nitrogen (N) and zinc (Zn) in the production of the crop. The experiment was conducted in pots in the experimental area, in the city of Bebedouro. It was installed in random blocks, consisting of twenty-seven plots. The controls correspond to combinations of three doses of Zn (2, 8 and 16 kg ha-1), applied in a localized seeding manner and three of N (0, 120 and 240 kg ha-1) applied in partial sowing and in coverage. The productive characteristics were evaluated: number of rows and grains per ear and yield. The interaction between N and Zn provided by the use of 120 kg ha-1 of N and 2 kg ha-1 of Zn resulted in plants with higher yield (30.96 t ha-1). The application of N did not influence the number of rows per spike, while increasing doses of Zn did not provide better performance for this production component. The use of the highest dose of Zn (16 kg ha-1) had a negative influence on the amount of grains per ear, while the interaction between the doses of 120 kg ha-1 of N and 2 kg ha-1 of Zn represented the treatment. more efficient in this analysis. Doses greater than 2 kg ha-1 of Zn interact negatively together with doses of 0 and 120 kg ha-1 of N, for the variables grains per ear and productivity.

Silage Quality and Output of Different Maize–Soybean Strip Intercropping Patterns

Abstract: Intercropping improves land-use efficiency under conditions of limited land and resources, but no information is currently available pertaining to land-use efficiency and silage quality based on whole-plant utilization. Therefore, a two-year field experiment was conducted with the following conditions: three maize–soybean strip intercropping patterns, comprising two maize rows along with two, three, or four soybean rows (2M2S, 2M3S, and 2M4S, respectively); and two sole cropping patterns of maize (SM) and soybean (SS). The aim was to evaluate the biomass yield and silage quality under each condition. Our results showed that all SIPs had a land equivalent ratio (LER) of over 1.6 based on both fresh and dry matter yield, and a higher whole plant yield, compared to sole cropping. Specifically, 2M3S exhibited the highest whole crop dry matter LER (1.8–1.9) and yield (24.6–27.2 t ha−1) compared to SM and SS (20.88–21.49 and 3.48–4.79 t ha−1, respectively). Maize–soybean mixed silages also showed better fermentation quality with higher lactic acid content (1–3%) and lower ammonia-N content (2–8%) compared to SS silages, and higher crude protein content (1–1.5%) with lower ammonia-N content (1–2%) compared to SM silage. Among the intercropping patterns, 2M3S had the highest fermentation quality index V-score (92–95). Consequently, maize–soybean strip intercropping improved silage quality and biomass yield, with 2M3S being recommended, due to its highest LER and biomass yield, and most optimal silage quality.