Produtividade de milho segunda safra em função de diferentes velocidades de semeadura e densidade de plantas

Research Article Spatial arrangement and its implications in the yield of maize cultivars

“…Differences were also observed in the correlations between the variables, distinct canonical contributions and groupings of the cultivars. A similar approach is reported in Kopper et al (2017), when observing that the plant population factor influenced all the response variables analyzed. Table 1.…”

“…Marchão et al (2005) found that the GY was significantly influenced by the density of plants, and by the interaction between hybrids and densities. In Kopper et al (2017), the was affected directly only by height of ear insertion, showing that plants with ears inserted in higher height tend to produce more. With the increase in population density, plant and first insertion heights increased, while stem diameter, number of rows per ear, 1,000-kernel weight and crop yield decreased (Modolo et al 2014).…”

Spatial arrangements of corn grown in Brazilian savanna conditions

“…This is because with the later sowing of corn, the interception of solar radiation and water availability decrease, consequently, the competition for environment Higher corn yield using a plant population above that recommended has also been reported by several other authors. For example, Kopper et al (2017) found higher corn yield when the cereal was sown in a population of 70 thousand plants ha -1 (above that recommended). While Foloni et al (2014) observed that the best yields were achieved with populations of 81 and 75 thousand plants ha -1 for hybrids AG 9010 and DKB 979, respectively, and both above the recommended population.…”

“…For that, it is necessary that the disposition of these in the field is carried out taking into account factors such as: soil fertility, climatic condition, genetic material used, among others. Several works in the literature report on the relationship between the spatial arrangement of plants and the corn yield (Torres et al, 2013;Kopper et al, 2017). However, the arrangement of plants in the crop can be altered by changes in population density, in the interrow spacing and, consequently, in the spatial distribution of plants in the row (Sangoi, Silva, & Argenta, 2010).…”

“…With genetic improvements, new corn hybrids have become more precocious, with plants of lesser architecture, smaller length of the tasseling-grain filling period, and erect leaves (Foloni et al, 2014). These characteristics, theoretically, provide the possibility of changing the interrow spacing and the plant population without negatively impacting grain yield (Kopper et al, 2017). Therefore, readjustments of the corn plant arrangement are necessary, especially in the savanna region, since this region has restricted climatic conditions in the second crop season.…”