The aim of this study was to compare the germination of perennial soybean (Nenotonia wightii) cv. Cooper based on two methods of scarification (hot water and mechanical scarification) versus control treatment (without scarification). Mechanical scarification consisted of scraping the seed with sandpaper (# 125) by hand for 5 minutes. Scarification with hot water consisted of placing the seeds in boiling point water in a 1:3 seed:water ratio for 24 hours. The percentage of germinated seeds was higher in the mechanical scarification treatment with sandpaper (p<0.05) and similar between the treatment with hot water and the control. The highest germination percentage was 37.5, 40, and 96% on days 14, 12, and 9 for the control, hot water, and mechanical scarification treatments, respectively.

The aim of this study was to compare the germination of perennial soybean (Nenotonia wightii) cv. Cooper based on two methods of scarification (hot water and mechanical scarification) versus control treatment (without scarification). Mechanical scarification consisted of scraping the seed with sandpaper (# 125) by hand for 5 minutes. Scarification with hot water consisted of placing the seeds in boiling point water in a 1:3 seed:water ratio for 24 hours. The percentage of germinated seeds was higher in the mechanical scarification treatment with sandpaper (p<0.05) and similar between the treatment with hot water and the control. The highest germination percentage was 37.5, 40, and 96% on days 14, 12, and 9 for the control, hot water, and mechanical scarification treatments, respectively.

The nutrient use in forages livestock system production high Andean is little used. This study evaluated the response of fertilization on the association of cultivated grasses in dry of Dactilys (Dactylis glomerata var. Potomac) and red clover (Trifolium pratense var quiñequeli). The study area was located at 4350 m of altitude in to the Puna ecoregion in Ayaracra sector, Pasco region of Peru. The experimental design was randomized complete block with factorial 2x3x2; with two levels of nitrogen (0 to 50 kg/ha), three levels of phosphorus (0, 80 to 160 kg/ha) and two levels of potassium (0 to 30 kg/ha). Was evaluated were floristic composition, growth rate and pasture production. The results indicate that fertilization nitrogen (50 kg/ha) and phosphorus (80 kg/ha) showed effect a significant the growth rate and forage production. There was not an effect potassium fertilization on the va...

The nutrient use in forages livestock system production high Andean is little used. This study evaluated the response of fertilization on the association of cultivated grasses in dry of Dactilys (Dactylis glomerata var. Potomac) and red clover (Trifolium pratense var quiñequeli). The study area was located at 4350 m of altitude in to the Puna ecoregion in Ayaracra sector, Pasco region of Peru. The experimental design was randomized complete block with factorial 2x3x2; with two levels of nitrogen (0 to 50 kg/ha), three levels of phosphorus (0, 80 to 160 kg/ha) and two levels of potassium (0 to 30 kg/ha). Was evaluated were floristic composition, growth rate and pasture production. The results indicate that fertilization nitrogen (50 kg/ha) and phosphorus (80 kg/ha) showed effect a significant the growth rate and forage production. There was not an effect potassium fertilization on the va...

This study aimed to characterize the genetics nucleus of three alpaca production systems in the central highlands: community enterprises and cooperatives (CEC), communal farms (CF) and livestock associations (LA). The study was conducted in the period 2006 to 2008 and included the static diagnostic of 28 alpaca herds; evaluation of 30 community genetics nucleus and estimation of the production parameters of a central nucleus of alpaca breeders (ABCN) composed of the best alpacas of 22 livestock units. The results were: a) Static Diagnostic. The CEC exhibited better indicators that other production systems, fibre management and production (CEC 5.2, CF 4.9, LA 5.0 lb/alpaca), grassland area dedicated for alpaca breeding (CEC 3225, CF 1024, LA 195 ha), access to market (CEC national, CF and LA local) and registered animals (CEC 10.5, CF 0.9, LA 0%). b) Evaluation of the genetic nucleus. The...

El propósito del estudio fue caracterizar los planteles de tres sistemas de producción alpaquera de la sierra central: empresas y cooperativas comunales (ECC), granjas comunales (GC) y asociaciones de ganaderos (AG). Se realizó del 2006 al 2008, comprendiendo el diagnóstico estático de 28 hatos alpaqueros, evaluación de 30 planteles comunales y estimación de parámetros productivos del núcleo central de reproductores de alpacas (NCRA), procedentes de 22 unidades ganaderas. Los resultados fueron: a) Diagnóstico estático: las ECC exhibieron mejores indicadores que los otros sistemas de producción, en manejo y producción de fibra (ECC 5.2, GC 4.9, AG 5.0 lb/alpaca), extensión de tierras dedicadas a la crianza de alpacas (ECC 3225, GC 1024, AG 195 ha), acceso al mercado (ECC nacional, GC y AG local) y porcentaje de animales registrados (ECC 10.5, GC 0.9, AG 0%); b) Evaluación d...

The dynamics of primary production and nutritional value were evaluated based on the variation of dry matter yield, plant height, crude protein content, crude fibre, and in vitro digestibility of dry matter (DM) in three phenological stages (floral bud, start of flowering and seed maturation) of three species of tropical grasses: para grass (Brachiaria mutica), molasses grass (Melinis minutiflora) and South African pigeon grass (Setaria sphacelata). The study was conducted in the province of Oxapampa, Pasco region (Peru) using a statistical design of divided plots for the variable of production of aerial biomass and completely randomized blocks for the nutritional value of the forage. B. mutica had the highest average height (97 cm), followed by S. sphacelata (55 cm) and M. minutiflora (40 cm). The superiority in height of B. mutica was reflected in the highest cumulative dry matter prod...

Se evaluó la dinámica de la producción primaria y el valor nutritivo basado en la variación del rendimiento de materia seca, altura de planta, contenido de proteína cruda, fibra cruda y digestibilidad in vitro de materia seca (MS) en tres estados fenológicos (botón floral, inicio de floración y maduración de semilla) de tres especies de gramíneas tropicales: gramalote (Brachiaria mutica), gordura (Melinis minutiflora) y setaria (Setaria sphacelata). El estudio se realizó en la provincia de Oxapampa, región Pasco (Perú) utilizando un diseño estadístico de parcelas divididas para la variable de producción de biomasa aérea y de bloques completamente randomizado para las variables de valor nutritivo del forraje. B. mutica presentó la mayor altura promedio (97 cm), seguida por S. sphacelata (55 cm) y M. minutiflora (40 cm). La superioridad en altura de B. mutica se reflejó ...