Production and quality of forage oats harvested at different developmental stages
DOI:
https://doi.org/10.5433/1679-0359.2025v46n6p1823Keywords:
Dry biomass production, Oat intercropping, Ruminal degradation, Winter cereals.Abstract
This study aimed to evaluate the productive and bromatological characteristics of white and black forage oats grown either in monocropping or intercropping systems, and harvested according to the following treatment designations: TamPic: 90% GMX Tambo white oats + 10% GMX Picasso black oats; InvPicGau: 90% GMX Invernia white oats + 5% GMX Picasso black oats + 5% UPF Gaudéria white oats; TamGau: 30% GMX Tambo white oats + 70% UPF Gaudéria white oats; and Pic: 100% GMX Picasso black oats. All materials were subjected to three successive cuts, at the vegetative, full vegetative, and pre-flowering and/or dough grain stages. With cuts made at the vegetative and full vegetative stages, the TamPic intercropping had the lowest whole plant dry matter content and the lowest dry biomass production (11.71% and 979 kg ha-1). With cuts made at the pre-flowering and dough stages, the black oat cv. Picasso monocrop had lower proportions of leaves (43.5% and 15.4% respectively) and higher proportions of stems (53.1% and 60.3% respectively) compared to the other cropping systems. On average, the ruminal degradation of the forages after 168 hours of incubation was higher: 75.84% at the pre-flowering stage and 74.18% at the dough grain stage. In general, oats allow up to three cuts without significantly compromising quality and productivity, whether in monocropping or intercropping systems.
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Copyright (c) 2025 Caroline Bordignon da Rosa, André Martins de Souza, Valéria Kalinovski, Ellen Baldissera, Nicolli Soethe Mokochinski, Livia Alessi Ienke, João Antonio de Arruda Giacomet, Renan Ribeiro Gomes, Mikael Neumann
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