The fertilization in rangelands has a positive effect in the forage production.  The increased nitrogen (N) availability improves plant growth and forage quality of native pastures. However, in the Pampa biome conditions of Rio Grande do Sul State, Brazil, these responses occur surprisingly fast and consistently. Therefore, the objective of this work was to quantify the N effect in the botanical composition of a natural pasture overseeded with annual ryegrass in Southern Brazil. The effects of three rates of N fertilization (zero, 100 and 200 kg N ha-1) were evaluated. Forage biomass was estimated on a monthly basis using the double sampling approach. The different botanical components of each forage sample were manually sorted in the laboratory. In order to calculate the Rényi diversity profile, two floristic composition evaluations were performed in the experimental area in December ...

The current conditions of the pandemic, as a result of Covid-19, have led university teachers to look for ways to improve the learning process and the generation of knowledge, taking advantage of the use of information technologies. This research paper proposes a model to support the learning process and knowledge generation using collaborative tools considering two aspects of importance: the management of the learning activity and the implementation using specifically the collaborative wall Padlet to facilitate student participation, team collaboration and the corresponding feedback, reinforcing the generation of knowledge. The results obtained are quite encouraging, identifying based on a satisfaction survey that students build their knowledge based on collaborative learning.

The fertilization in rangelands has a positive effect in the forage production.  The increased nitrogen (N) availability improves plant growth and forage quality of native pastures. However, in the Pampa biome conditions of Rio Grande do Sul State, Brazil, these responses occur surprisingly fast and consistently. Therefore, the objective of this work was to quantify the N effect in the botanical composition of a natural pasture overseeded with annual ryegrass in Southern Brazil. The effects of three rates of N fertilization (zero, 100 and 200 kg N ha-1) were evaluated. Forage biomass was estimated on a monthly basis using the double sampling approach. The different botanical components of each forage sample were manually sorted in the laboratory. In order to calculate the Rényi diversity profile, two floristic composition evaluations were performed in the experimental area in December ...