Épocas de semeadura do milho “safrinha”, no Estado do Paraná, com menores riscos climáticos

Gonçalves, S. L.; Caramori, Paulo Henrique; Wrege, M. S.; Shioga, Pedro Sentaro; Gerage, Antônio Carlos

doi:10.4025/actasciagron.v24i0.2281

Cited by 13 publications

(11 citation statements)

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“…Cluster 0 predominantly included the north side of the state of Paraná (Figure 4), where water deficit occurs (Fritzons et al, 2011). Gonçalves et al (2002) studied sowing dates for maize in Paraná in summer 2 nd as well as its climatic risks and concluded that the risk of drought in the region of cluster 0 exceeded 50%.…”

Section: Resultsmentioning

confidence: 99%

Identification of Homogeneous Rainfall Zones During Grain Crops in Paraná, Brazil

et al. 2019

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The aim of this study is to identify homogeneous rainfall zones in the winter and summer 1 st and 2 nd crops, in the state of Paraná, Brazil. The zones were defined by clustering using the expectation-maximization (EM) algorithm to transform seasonal rainfall series. Monthly average rainfall data collected from 157 weather stations for 20 years (1996 to 2015) were employed. The results show that the number of homogeneous zones varied among growing seasons. The summer crop presented two clusters, with rainfall averages of 1489 and 1925 mm; the second crop presented four clusters, with averages of 1849, 1004, 1454, and 1182 mm; and the winter crop had three clusters, with averages of 969, 1498, and 1171 mm. Clustering was a useful instrument to identify geographical regions with similar rainfall regimes during different growing seasons in the state of Paraná. Rainfall distribution was more homogeneous in the summer crop. In all crops analyzed, the clusters with the lowest rainfall rate were present in the northwestern, northern center, and northern pioneer of the state of Paraná, whereas the clusters with the highest rainfall rate were found in the coastal regions.

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Section: Resultsmentioning

confidence: 99%

Identification of Homogeneous Rainfall Zones During Grain Crops in Paraná, Brazil

et al. 2019

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“…Similarly, the content of CP obtained in summer, spring and autumn are within the range of values usually observed in corn silage, ranging from 60 to 90 g/kg (Melo et al, 1999). The lower CP content observed in the silage during the winter period is due to the features of the crop corn used in making these silages, which is grown during the "off season" (summer/autumn) after the summer crops and often under low technology due to the high risks for the culture deployment in the region (Gonçalves et al, 2002).…”

Section: Resultsmentioning

confidence: 99%

Technical assistance and seasonality in the diet and production of dairy herds in household agriculture of Western Paraná

et al. 2015

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-The objective of the present study was to characterize the food sources, as well as the composition and quality of milk obtained from household farms of western Paraná State (Brazil) with and without technical assistance during the different seasons. For such, 24 properties were selected, 12 of which only received assistance and technical support. Four milk samples were taken (summer, autumn, winter and spring) to assess the physicochemical composition, somatic cell count and total bacterial count and feed supplied to the animals to assess the chemical composition (crude protein, ash, dry matter and neutral detergent fiber). The data were analyzed in a completely randomized design with a 2 × 4 factorial arrangement; the first factor was the presence and absence of technical assistance and the second factor was the four seasons of the year. Due to the dairy tradition of properties in the region, technical assistance had no significant effects on the health and nutritional quality of food, the number of animals, the production, or total bacterial count, which suffered oscillations only depending on the seasons of the year. However, the presence of assistance contributed to reducing somatic cell counts of milk produced and marketed. The technical assistance does not affect the quality of forages and concentrates used or the milk composition; however, it improves the sanitary quality of the milk produced throughout the four seasons of the year in household farms of western Paraná.

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“…A segunda safra é hoje uma realidade devido principalmente às pesquisas de adaptação de cultivares, que reduziram os ciclos das culturas de verão e do próprio milho. Dentre as necessidades de informação, o conhecimento básico é sobre a época de semeadura do milho segunda safra, definida pela interação entre genótipo e ambiente, sendo a melhor época de semeadura aquela que coincide com maior crescimento vegetativo, atingindo maiores produtividades (Gonçalves et al, 2002). A escolha da cultivar a ser utilizada e a definição das épocas mais adequadas para a semeadura são as principais dúvidas do processo de produção do milho segunda safra.…”

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Yield and its components according to maize sowing times at offseason in the Northern of Mato Grosso state, Brazil

Fiorini

Pereira

Medeiros

et al. 2018

J. Bioen. Food Sci.

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Épocas de semeadura do milho “safrinha”, no Estado do Paraná, com menores riscos climáticos

Cited by 13 publications

References 1 publication

Identification of Homogeneous Rainfall Zones During Grain Crops in Paraná, Brazil

Identification of Homogeneous Rainfall Zones During Grain Crops in Paraná, Brazil

Technical assistance and seasonality in the diet and production of dairy herds in household agriculture of Western Paraná

Yield and its components according to maize sowing times at offseason in the Northern of Mato Grosso state, Brazil

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