Produção e qualidade da forragem de cornichão sobressemeado em diferentes densidades de semeadura em pastagem de estrela africana e azevém

Yield parameters and water productivity of tropical and overseeded winter forages

“…These results are consistent with the work of Sanches et al (2015), who obtained an accumulation rate of 74.2 kg ha -1 d -1 in Tifton 85 grass grown with irrigated oat crops. Cycles 2 to 5 occurred in the winter, with an accumulated TFP of 7,283.4 kg ha -1 , which were higher than that of African Star grass + ryegrass + Lotus corniculatus that produced 6,676.2 kg ha -1 in three winter cycles in Dois Vizinhos-PR (Silveira et al 2015). During the experimental period, the mean percentage contribution of winter forages (oats + ryegrass) to the total production was 42% and 90%, in the Guinea and Bermuda grass crops, respectively.…”

“…average production throughout the period. In some intercropping of grasses with winter forage, the rates of forage accumulation varied between 66.5 -143.5 kg ha -1 d -1 (Da Silva et al 2012;Aguirre et al 2014;Gomes et al 2015a;Sanches et al 2015;Silveira et al 2015). Leaf area index (LAI) was directly proportional to the total forage production (TFP) in the overseeded Guinea grass (Figure 3a), similar to the observations of Silva et al (2009), who reported a direct relationship between forage production and LAI in Guinea grass.…”

“…Forage production throughout the year does not constantly meet the requirements of the animals, and although irrigation attenuates over the course of the seasons, it does not eliminate it (Sanches et al 2015). Thus, the consortium between summer and winter forages or overseeded winter forage, can optimize forage production in the winter period and prolong the annual period of pasture utilization, as well as improve forage quality (Silveira et al 2015). In pastures of Cynodon spp., there is a possible synergy with overseeded winter forages, indicated by the low oscillation of the qualitative variables and significant quantitative contributions to forage production (Castagnara et al 2012;Da Silva et al 2012;Neres et al 2012;Aguirre et al 2014Aguirre et al , 2016Gomes et al 2015a;Sanches et al 2015).…”

“…In studies with Tifton 85 grass in the northwest region of Paraná (Gomes et al, 2015a;Sanches et al 2015), it was observed that oat overseeding significantly increased the leaf/stem ratio between 50 and 60%. In Dois Vizinhos-PR, an experiment was conducted with Cynodon nlemfuensis Estrela Africana that was overseeded with Lotus corniculatus L. and ryegrass (Silveira et al, 2015); however, the consortium did not change the total forage production.…”