Forage potential of black oat Iapar 61 alone or in association with birdsfoot trefoil

Abstract

The objective of this study was to evaluate the structural characteristics, dry matter production, residual mass, chemical composition and in vitro dry matter digestibility of Iapar 61 black oat (Avena strigosa cv Iapar 61) pasture, both in isolation and in association with birdsfoot trefoil (Lotus corniculatus L., cv. St. Gabriel), under different forms of management in three growth cycles. A randomized block design was used with split plots in time with four treatments: conventional tillage oats, oat tillage, oats associated with birdsfoot trefoil and single birdsfoot trefoil, with three periods of evaluation and four replications. The apical meristem of oats increased from the first to the second cycle. The dry matter production of single birdsfoot trefoil was 579.65 kg on average, and the oats tillage production was 2597.78 kg. Oats exhibited high nutritional value before the first grazing in all treatments; however, at the end of its cycle, the association with birdsfoot significantly increased the crude protein content of the forage. The in vitro dry matter digestibility was similar between crops and decreased in the third cycle. Birdsfoot increased the nutritional value of oats at the end of the oat life cycle.

Effect of girdling on flowering and fruiting of litchi (Litchi chinensis) in subtropics of Bihar

“…Data for the leaves/stems ratio on average for the period (Fig 1 ) showed that in pure grown birdsfoot trefoil it was 1.33. Our results are in agreement with these of Soster et al (2004) and Ducati et al (2015), who have determined some agronomical characteristics in this crop and found leaves/stems ratio with values 1.40. Ayres et al (2008) found higher values ranged from 1.47 to 1.68.…”

Effects of intercropping on temperate grasses canopy architecture and nutritive profile

“…These results are much smaller than Neres et al (2012) that obtained 24% and 19.6% at 1 st and 3 rd defoliations, respectively. Nevertheless, similar to those reported by Ducati et al (2015) between 9.33 and 26.6% of DM. In that situation the authors found that, the intercropping between black oat and birdsfoot can cause the reduction of CP content over the time by the more intense competition for light.…”

“…The adjustment between tiller height, tiller density and stem diameter corroborates Sbrissia et al (2018) results and indicates that in WO canopies the DM yield is more dependent on tiller weight than tiller population, contrary to triticale and black oat swards. On the other hand, Ducati et al (2015) obtained greater tiller density (771 tillers m -2 of black oat IAPAR 61), but with lower number of live leaves (average of 2.15), which suggests another via to balance the canopy and keep the tiller size/density.…”