Biomass production and nutritional properties of promising genotypes of Tithonia diversifolia (Hemsl.
This is the last issue edited by Rainer Schultze-Kraft and Lyle Winks and we would like to give all our gratitude, admiration and respect to them for their outstanding work as editors of the journal. Their committed work to publish excellence in all aspects of tropical forages research is reflected in the quality of the papers published, both in shape and substance, and the steady increase of the rankings and metrics of the journal:• During their role as editors, Tropical Grasslands-Forrajes Tropicales has published 332 papers, 179 in special issues (119 contributions to the International Grassland Congress 2013 and 60 contributions to the International Leucaena Conference 2018), and 153 in regular issues.
Getting accepted -Successful writing for scientific publication: a research primer for low-and middle-income countries.
The aim of this study was to compare a silvopastoral system with a control (pasture only) in the Brazilian Cerrado. The silvopastoral system consisted of a tropical grass (Brachiaria brizantha cv. Marandu) pasture and trees (Zeyheria tuberculosa), while the control was a Marandu pasture without trees. Sheep intake, feeding behavior and microclimatic conditions were the variables evaluated. Temperatures within the silvopastoral system were lower than in the control (maximum temperature of 28 and 33.5 °C, temperature and humidity index of 74.0 and 79.2 for the silvopastoral system and control, respectively). There was increased dry matter intake (88.2 vs. 79.9 g DM/kg 0.75 LW/d, P<0.05), organic matter intake (89.6 vs. 81.1 g OM/kg 0.75 LW/d, P<0.05) and grazing time (572 vs. 288 min/d, P<0.05), and reduced total water intake (430 vs. 474 mL/kg 0.75 LW/d, P<0.05) and walking time (30 vs. 89 min/d, P<0.05) in grazing sheep in the silvopastoral system relative to the control. The results suggest that a silvopastoral system would provide a more favorable environment than a straight pasture for sheep performance in a tropical grazing situation. Resumen En el estudio se compararon un sistema silvopastoril con un sistema control de solo pastura en condiciones del Cerrado brasileño. El sistema silvopastoril consistió en una pastura de Brachiaria brizantha cv. Marandu con árboles de Zeyheria tuberculosa, mientras que el tratamiento control consistió en una pastura de cv. Marandu sin árboles. Como variables se midieron el consumo por ovejas, su comportamiento de pastoreo y las condiciones microclimáticas durante el tiempo de evaluaciones. Las temperaturas para el sistema silvopastoril fueron más bajas que en el control (temperatura máxima de 28 y 33.5 °C, e índice de temperatura-humedad de 74.0 y 79.2 para el sistema silvopastoril y el control, respectivamente). Las ovejas en pastoreo mostraron mayor consumo de materia seca (88.2 vs. 79.9 g MS/kg 0.75 peso vivo/día, P<0.05) y de materia orgánica (89.6 vs. 81.1 g MO/kg 0.75 peso vivo/día, P<0.05), mayor tiempo pastoreando (572 vs. 288 minutos/día, P<0.05), menor consumo total de agua (430 vs. 474 mL/kg 0.75 peso vivo/día, P<0.05) y menor tiempo caminando (30 vs. 89 minutos/día, P<0.05) en el sistema silvopastoril en comparación con el sistema control. Los resultados indican que para la producción ovina bajo condiciones tropicales un sistema silvopastoril puede proporcionar un entorno más favorable que un sistema de pastura sola.
The diversification of forage grasses is a strategic solution to obtain higher productivity in diverse environments. In this regard, the objective of the present study was to evaluate in a glasshouse study the flooding tolerance of 9 cultivars of forage grasses. The study was conducted using a complete randomized design with a 9 x 3 factorial arrangement: 9 cultivars (Brachiaria brizantha cvv. Marandu, Piatã e Xaraés; hybrid Brachiaria cv. Mulato II; B. humidicola cvv. Llanero and Tupi; B. ruziziensis cv. Common; Panicum maximum cvv. Massai and Tanzânia) and 3 soil water levels: a) minimal water for development (50% of field capacity); b) field capacity; and c) flooded soil (2 cm above soil level), with 3 replicates. Forage accumulation, plant height and root accumulation were evaluated. All cultivars grew well in soil at 50% field capacity highlighting their adaptation to mildly dry conditions. Under flooded conditions, B. humidicola cvv. Llanero and Tupi showed no reduction in forage dry matter production, while shoot growth of cvv. Marandu, Piatã, Tanzânia and Xaraés was significantly reduced (P<0.001) by 71.3, 94.0, 81.2 and 77.2%, respectively. Root mass was reduced about 30% in flooded plants relative to those grown at 50% field capacity. While all cultivars could be used where soil moisture is marginal for production, cvv. Llanero, Tupi and Massai would be most suitable where flooding could occur during the growing season. Field studies are needed to verify these glasshouse findings. ResumenLa diversificación de las gramíneas forrajeras es una solución estratégica para obtener una mayor productividad en ambientes diferentes. En condiciones de invernadero en la Universidad del Estado de Mato Grosso, Alta Floresta, Mato Grosso, Brasil, se realizó un estudio con el objetivo de evaluar la tolerancia de 9 cultivares de gramíneas forrajeras tropicales a condiciones de inundación controlada. Los tratamientos se dispusieron en un diseño completamente al azar con arreglo factorial 9 x 3: nueve cultivares (Brachiaria brizantha cvs. Marandu, Piatã y Xaraés; Brachiaria híbrido cv. Mulato II; B. humidicola cvs. Llanero y Tupi; B. ruziziensis cv. Común; y Panicum maximum cvs. Massai y Tanzânia) y 3 niveles de agua en el suelo: a) cantidad de agua considerada como mínima para el crecimiento de las plantas (50% de capacidad de campo); b) suelo a capacidad de campo; y c) suelo inundado con una lámina de 2 cm sobre el nivel del suelo, con 3 repeticiones. Como parámetros se midieron la producción de forraje, la altura de planta y la acumulación de raíces. Todos los cultivares presentaron buen desarrollo cuando el suelo se encontraba a 50% de capacidad de campo, lo cual muestra su adaptación a condiciones ligeramente secas. Bajo condiciones de inundación, B. humidicola cvs. Llanero y Tupi no mostraron reducción en la producción de materia seca de forraje, mientras que el crecimiento de los cvs. Marandu, Piatã, Tanzânia y Xaraés se redujo significativamente (P<0.001) en 71.3, 94.0, 81.2 y 77.2%, respectivamente. En plantas baj...
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.
customersupport@researchsolutions.com
10624 S. Eastern Ave., Ste. A-614
Henderson, NV 89052, USA
This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.
Copyright © 2024 scite LLC. All rights reserved.
Made with 💙 for researchers
Part of the Research Solutions Family.