Agronomic traits of seven accessions of Cenchrus purpureus under rainfed conditions in the tropical region of Veracruz, México
2024
Armando Arrieta-González | Karla Lissette Silva-Martínez | Claudio Vite-Cristóbal | Araceli Rodríguez-Andrade | Antonio Hernández-Beltrán | Belisario Domínguez-Mancera
The purpose of this study was to determine the agronomic characteristics and yield of seven Cenchrus purpureus accessions (Taiwan grass, King grass, Elephant grass, Merkeron, CT-115, Purple grass, and Maralfalfa) to identify the best options to use as fodder resources in the Huasteca Alta Veracruzana (HAV) ruminant production units. The research was conducted at the Instituto Tecnologico Superior de Tantoyuca in 2019 and 2020, under rainfed conditions. Sowing density was established at 36 tillers per 25 m2, with a spacing between rows of 0.8 m and 0.8 m between plants. Fresh weight, dry matter, daily rates of dry matter accumulation in leaves, leaf/stem ratio, height, and harvest frequency were assessed. Rainfall amount, temperature, relative humidity, and global radiation levels were recorded to assess their effect on the evaluated variables. The one-way analysis of variance and multivariate analysis techniques were used, such as multiple linear regression and clustering analysis with Statistica V10 software. There were no statistical differences between the fresh weight of different accessions in the rainy season. On the other hand, CT-115 presented a higher dry matter content than Merkeron or Elephant grass (p < 0.05). The correlation analysis showed a high association between dry matter and daily rates of dry matter accumulation in leaves. The results varied due to weather phenomena and C. purpureus genetic variability. Quality parameters must be evaluated to identify the accessions with the best nutritional values and their effect on animal performance.
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