Agronomic traits of pinto peanut genotypes in response to variable management strategies
DOI:
https://doi.org/10.5433/1679-0359.2025v46n1p23Keywords:
Arachis pintoi, Belmonte cultivar, Defoliation strategy, Legume.Abstract
Different defoliation strategies can lead to varying performances in forage legumes. Therefore, the objective of this study was to assess the variations in forage accumulation and nutritional value among four cultivars of Arachis pintoi Krapov. & W. C. Greg. (Alqueire-1, Amarillo, Belmonte, and BRS Mandobi) across two harvest intervals (28 and 35 days) and two harvest heights (5 and 10 cm). The parameters measured included accumulation of forage dry matter (DM), morphological composition, nutritional value, in vitro organic matter digestibility, and mass of invasive plants. The Belmonte cultivar exhibited the highest accumulation of forage DM, averaging 5.9 Mg DM ha-1 season-1 across the various management methods. It also showed the highest average accumulation of leaflet DM compared to the other cultivars, while the Amarillo cultivar had the lowest. Additionally, Belmonte showed higher concentrations of crude protein (277 g kg-1 DM) and higher in vitro organic matter digestibility (717 g kg-1 DM) compared to Alqueire-1 and Amarillo, with intermediate levels of neutral detergent fiber (366 g kg-1 DM) relative to the other cultivars. A harvest height of 5 cm yielded the highest accumulation of forage DM in A. pintoi. Canopies managed at this height also exhibited a greater presence of invasive plants. The management practices adopted did not affect the chemical composition or in vitro organic matter digestibility across the cultivars. Overall, the Belmonte cultivar displays productive and nutritional traits that identify it as the pinto peanut with the most potential for utilization.
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Copyright (c) 2024 Marcell Patachi Alonso, Junior Issamu Yasuoka, Fagner Junior Gomes, Tatiane Beloni Alonso, Liliane Severino da Silva, Sônia Maria De Stefano Piedade, Carlos Guilherme Silveira Pedreira
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