NEIVERTH, J. Características bromatológicas de trigo duplo propósito associado à aplicação foliar de fungicida. ResumoO objetivo desta pesquisa foi avaliar a eficiência de fungicidas, isolados ou em associação, e seu efeito sobre as características bromatológicas de trigo duplo propósito, cultivar BRS Umbu. O experimento foi desenvolvido no campo experimental da Universidade Estadual do Centro Oeste -UNICENTRO, campus CEDETEG, no município de Guarapuava, PR. O delineamento experimental utilizado foi o de blocos casualizados, em esquema fatorial 4 x 3, sendo quatro fungicidas em três fases da cultura, estes em três repetições, totalizando 36 parcelas. Os tratamentos foram: 1-testemunha (sem aplicação); 2-triazol; 3-estrobilurina e 4-triazol + estrobilurina, e as fases de aplicação dos fungicidas foram: 1-vegetativa (perfilhamento); 2-reprodutiva (florescimento) e 3-vegetativa + reprodutiva. Foi utilizada a cultivar BRS Umbu e para os tratamentos os fungicidas: triazol (ciproconazol -200 mL ha -1 ); estrobilurina (trifloxistrobina -300 mL ha -1 ); triazol + estrobilurina (ciproconazol + trifloxistrobina -200 mL ha -1 ). Foram avaliadas as características bromatológicas: nutrientes digestíveis totais (NDT), teores de fibra em detergente neutro (FDN), teores de fibra em detergente ácido (FDA) e hemicelulose (HEM). As médias foram comparadas pelo teste de Tukey, a 5% de probabilidade. A aplicação de fungicida do grupo químico do triazol reduz os teores de fibra em detergente neutro e fibra em detergente ácido, sendo estes dependentes da fase de aplicação. A aplicação de fungicida em fase reprodutiva e vegetativa + reprodutiva demonstrou efeito positivo sobre os parâmetros bromatológicos da forragem de trigo duplo propósito.Palavras chave: Triticum aestivum; forragem; qualidade de fibra; controle de doenças. Abstract Bromatological characteristics of dual purpose wheat associated to foliar fungicide applicationThe objective of this research was to evaluate the efficiency of fungicides, isolated or in combination, and its effect on the bromatological characteristics of dual purpose wheat, BRS Umbu. The experiment was carried out in the experimental field of the Universidade Estadual do Centro Oeste -UNICENTRO, CEDETEG campus, in the city of Guarapuava, PR. The experimental design was a randomized complete block design, in a 4 x 3 factorial scheme, four fungicide management and three phases of culture, in three repetitions, totaling Cientific Paper

The aim of this study was to evaluate the effect of nitrogen fertilization with and without humic acid in barley cultivars on the export of nitrogen, phosphorus and potassium grains. The experiment was performed in the city of Guarapuava, PR, during the 2015 and 2016 growing seasons. The experimental design was in RCB in factorial 5 x 2, with the following sowing fertilization (kg ha-1): 0, 100 NPK, 100 NPK+HS, 250 NPK, 250 NPK+HS and two cultivars, BRS Brau and BRS Elis. The dose of 250 kg NPK with humic substance increased the nitrogen export to barley grains, with the highest levels occurring in the BRS Brau cultivar under favorable climatic conditions. Under favorable climatic conditions, the export of phosphorus to barley grains in the agricultural crop was not influenced by the humic substance, with the highest levels occurring in the BRS Brau cultivar. The dose of 100 kg NPK with humic substance increased the export of potassium to barley grains, with the highest levels occurring in the BRS Brau cultivar regardless of climatic condition. There were correlations between nitrogen and phosphorus levels in grains and between phosphorus content and grain yield.

This study aimed to evaluate NPK formulations used in fertilization at sowing associated with and without humic substances (HS) in terms of the agronomic characteristics and grain quality for malt from the barley cultivars BRS Brau and BRS Elis, focusing on the agricultural years 2015 and 2016 in Guarapuava, PR. The experimental design was a randomized block, in a factorial 5 x 2 format, with five fertilizations: 0 kg ha-1 (control); 100 kg ha-1 of NPK; 100 kg ha-1 NPK + HS; 250 kg ha-1 of NPK; and 250 kg ha-1 NPK + HS, using two barley cultivars, BRS Brau and BRS Elis, replicated four times. The variables evaluated were hectoliter weight, grain yield, malt quality by means of sort 1, 2 and 3, and the protein percentage. The data evaluated were submitted to joint variance analyses for the agricultural crops, and the means were compared through non-orthogonal contrasts. The use of humic substances in NPK formulations provides an increase in grain yield, and its effect is observable in the lower doses of NPK + HS formulations. The lower dose of NPK formulation combined with the humic substance reduced class 1 and increased class 3 in agricultural crops from the years 2015 and 2016. The 2016 crop, with favorable climatic conditions, presented improved hectoliter mass, grain yield and quality of the barley grains, based on commercial grade.

The objective of this study was to evaluate the effect of foliar fungicide application on the chemical characteristics and in situ digestibility of forage and silage in forage maize hybrids with different grain textures in two sowing seasons. A randomized complete block design was used with four replications, in a 4 x 2 factorial arrangement, 4 hybrids, with and without foliar fungicide application, in two sowing seasons. The hybrids used were DKB240PRO, AS1572PRO, 32R48YH and AG8690PRO3. Data were tested by analysis of variance; the means were compared by Tukey’s test at 5% probability and two non-orthogonal contrasts were performed. The application of fungicide on forage maize hybrids reduced the content of neutral detergent fiber (NDF), acid detergent fiber (ADF), soft dough stage and in the silage produced. The sowing season in December negatively influenced the chemical parameters of forage maize hybrids, compared to sowing in October. Hybrids with highly vitreous endosperm presented the highest contents of NDF and ADF, soft dough stage and in the silage produced. The application of fungicide (trifloxystrobin + prothioconazole) at the V8 and R1 stages positively influenced in situ digestibility soft dough stage and in the silage produced, depending of the sowing season.

O objetivo foi avaliar a eficiência de fungicidas, isolados ou em associação, aplicados em diferentes fases do trigo BRS Umbú, e seus efeitos no controle de doenças foliares e nas características morfológicas e agronômicas. O experimento foi desenvolvido no campo experimental da Universidade Estadual do Centro Oeste – UNICENTRO, campus CEDETEG, no município de Guarapuava, PR. O trabalho foi conduzido em duas safras agrícola, utilizando a cultivar de trigo duplo propósito BRS Umbu. O delineamento experimental foi blocos ao acaso, em esquema fatorial 4x3, sendo quatro fungicidas e três fases de aplicação, com três repetições. Foram avaliadas características área abaixo da curva de progresso da doença (oídio e ferrugem da folha), número de perfilhos, número de espigas, número de grãos por espiga, peso hectolitro, peso de 1000 grãos e produtividade de grãos. As médias foram agrupadas pelo teste de Scott-Knott a 5% de probabilidade. Os fungicidas aplicados em associação reduziram a AACPF, sendo estes dependentes da safra agrícola. A associação dos fungicidas foi eficiente independentemente do número de aplicações para o controle da ferrugem da folha. A aplicação da associação de fungicidas triazol + estrobirulina aplicada na fase vegetativa aumentou a produtividade de grãos na safra agrícola de 2013. As aplicações de fungicidas em todas as fases de aplicação, propiciaram a maior produtividade de grãos.