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Accueil du site → Master → Etats Unis → 1980 → Phenological development and impact of season and intensity of defoliation on Sporobolus flexuosus and Bouteloua eriopoda

New Mexico State University (1980)

Phenological development and impact of season and intensity of defoliation on Sporobolus flexuosus and Bouteloua eriopoda

Young SA

Titre : Phenological development and impact of season and intensity of defoliation on Sporobolus flexuosus and Bouteloua eriopoda

Auteur : Young SA

Université de soutenance : New Mexico State University

Grade : Master of Science (MS) 1980

Résumé
The objectives of this study were to determine how eight seasonal defoliation patterns affect regrowth of dry matter yield and basal diameter of mesa dropseed (Sporobolus flexuosus [Thrub.] Rhydb.) and black grama (Bouteloua eriopoda [Torr.] Torr.) ; determine how these defoliation patterns affect the reproductive potential of black grama ; quantify seasonal phenological stages of growth in both species ; and interpret the data in terms of management application. Regrowth and basal diameter of both species clipped to remove 30 percent the first year during vegetative growth had increased after two growing seasons. Therefore, for continued forage production, light use prior to floral development is recommended. Regrowth, basal diameter, and stolon numbers increased over two growing seasons in black grama plants clipped to simulate light use at dormancy. Therefore, light use of black grama during the winter is encouraged.

Mots Clés : Bouteloua, defoliation, management, phenology, cattle grazing, cattle grazing, Sporobolus, grass, , grass, grassland, management, grassland, reproduction, productivity ,grassland, defoliation, Sporobolus,management, Sporobolus,phenology

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Page publiée le 23 avril 2016, mise à jour le 24 décembre 2019