El trabajo consistió en evaluar siete especies de gramíneas a diferentes edades rebrote y épocas del año (época seca época lluviosa), tres zonas agroclimáticas Costa Rica. Se utilizó un diseño factorial 7x2x4 (especie forrajera, edad rebrote) con 3 repeticiones, para total 168 unidades experimentales. evaluó la concentración fibra neutro detergente (FND), ácido (FAD), lignina (LIG), digestibili...

Exotic species invasion represent important causes of harming the structure, function, and ecological environment in ecosystems. Yet, knowledge remains limited on invasibility (invasion advantage exotic species) recoverability (recovery ability native a plant community following depend its successional stages. We selected three grasses Setaria viridis, Artemisia gmelinii, Bothriochloa ischemum ...

Structure and composition of vegetation and abundance of breeding birds in grasslands seeded to Old World bluestem (Bothriochloa ischmaeum) were compared to native mixed prairie in the southern Great Plains of North America. Abundance of birds was determined using fixed-radius point counts. Detrended correspondence analysis was used to compare plant community composition and canonical correspon...

Ischaemum rugosum Salisb. (Saramolla grass) is a noxious weed of rice that is difficult to control by chemical or mechanical means once established. A study was conducted to determine the effect of light, temperature, salt, drought, flooding, rice residue mulch, burial depth, and pre-emergence herbicides on seed germination and emergence of I. rugosum. Germination was stimulated by light and in...

An investigation was carried out at the Muda rice fields, Peninsular Malaysia during four consecutive seasons of 2004 and 2005 to study the seasonal variation in the weed seedbank. Species composition with their dominance ranking and similarity between the species were recorded. A total of 577 seeds/sample (3337 seeds/m ) in 1/2004, 970 seeds/sample (5659 seeds/m ) in 2/2004, 928 seeds/sample (...

Weed infestation happens when there is intense competition between rice and weeds for light, nutrients water. These conditions need to be monitored controlled lower the growth of as they affected crops production. The characteristics are challenging differentiate macroscopically. However, information can acquired using a spectral signature graph. Hence, this study emphasises weed species in fie...

Abstract Many of today’s damaging invasive plants were intentionally introduced for pasture development and amenity. By examining the introduction history consequent spread these species, we can identify factors associated with their successful establishment dominance. Using collated presence/absence cover data, alongside a review literature discussions land managers, present comprehensive anal...