Influence of forage legumes on the soil-grass system
Article Sidebar
Main Article Content
Abstract
the variability of each grassland were selected to evaluate their performance every five years. Those with a preponderance value higher than ± 0.78 and explained at least 65 % of the accumulated variance were chosen. In the vegetation, up to 50 indicators were studied and 7 to 9 were selected, in which the plant coverage, the density of the grass and the presence of natural grasses coincided. From the 76 soil indicators, between 6 and 9 were selected, in
which the distribution of aggregates in dry and humid conditions, structural stability, Value n and underground phytomass were highlighted. Also, the soil quality index and the organic carbon stored in the soil (CSS) were evaluated. The silvopastoral grassland during the first 12 years of continuous explotation had plant coverage higher than 95 %, 6 and 9 plants m2 of Guinea grass, 4 and
6 t DM ha-1 and a gradual improvement of soil fertility, with a predominance of aggregates in humid conditions between 1 and 5 mm, with values between 25 and 58%. From the 14 explotation years, there was no difference in the performance of the indicators, which showed their stability and the balance in the soil-grass system. In the mixture of legumes with grasses from the 12 years
of exploitation decreased glycine but recovered the total legumes percentage, which were characterized to have higher predominance in the dry season. Both grasslands had good soil quality, increased the organic carbon stored in the soil (CSS) and maintained productive and ecological stability. Confidence tables for indicators are showed which can be used as reliable and sensitive tools to detect changes in grasslands and can be used in research, teaching and production.
Key words: grass- legumes associations, soil, livestock, sustainability
Article Details
Those authors that have publications with this journal accept the following terms:
1. They will retain their copyright and guarantee the journal the right of first publication of their work, which will be simultaneously subject to the License Creative Commons Attribution-NonCommercial 4.0 International (CC BY-NC 4.0) that allows third parties to share the work whenever its author is indicated and its first publication this journal. Under this license the author will be free of:
- Share — copy and redistribute the material in any medium or format
- Adapt — remix, transform, and build upon the material
- The licensor cannot revoke these freedoms as long as you follow the license terms.
Under the following terms:
- Attribution — You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use.
- NonCommercial — You may not use the material for commercial purposes.
- No additional restrictions — You may not apply legal terms or technological measures that legally restrict others from doing anything the license permits.
2. The authors may adopt other non-exclusive license agreements to distribute the published version of the work (e.g., deposit it in an institutional telematics file or publish it in a monographic volume) whenever the initial publication is indicated in this journal.
3. The authors are allowed and recommended disseminating their work through the Internet (e.g. in institutional telematics archives or on their website) before and during the submission process, which can produce interesting exchanges and increase the citations of the published work. (See the Effect of open access).