Examinando por Autor "Cervantes Peralta, Marieta Eliana"

Mostrando 1 - 7 de 7

Estudio de caso; Haciendo llegar los servicios donde no alcanzan [ 2016 ]
(Instituto Nacional de Innovación Agraria, 2016-06) Escobal Valencia, Fernando; Cervantes Peralta, Marieta Eliana
Este estudio de caso documenta la experiencia de la Estación Experimental Agraria Baños del Inca de INIA en Cajamarca para hacer llegar servicios de asesoría agrícola a pequeños productores en contextos altamente desafiantes. Desde 2013, en el marco del convenio Plantwise-INIA, los doctores de plantas Ing. Fernando Escobal Valencia e Ing. Marieta Cervantes Peralta operan dos clínicas de plantas (Chamis y Chetilla), acumulando tres años de experiencia que revelan los retos de proveer servicios que satisfagan la demanda tanto de hombres como de mujeres. El documento aborda la problemática de la migración masculina rural-urbana en Cajamarca, donde las mujeres quedan a cargo de las chacras y crianzas, pero solo representan el 25% de los usuarios de las clínicas. En un contexto donde solo el 4.6% de los 329,650 productores de Cajamarca reciben asistencia técnica, el 89.3% tienen propiedades pequeñas (0.1-5 ha), el 77% practican agricultura de secano y menos del 2% usa semilla de calidad, INIA enfrenta el desafío de proveer servicios con recursos limitados. El estudio describe la implementación de un modelo flexible que combina clínicas fijas, clínicas móviles rotativas entre seis comunidades, jornadas de salud de plantas (donde las mujeres representan 41% de participantes), parcelas demostrativas, visitas a campo y análisis de laboratorio. Se documentan casos específicos de transferencia tecnológica, destacando la experiencia del agricultor líder Paulino Ramos Castrejón y su hermana Eusebia Ramos Castrejón con la aplicación de aceite comestible para control del gusano mazorquero en maíz, tecnología 100% efectiva que puede prevenir pérdidas de 25-40% de la cosecha. El estudio enfatiza que la adopción tecnológica es un proceso complejo influenciado por factores como disponibilidad de tiempo (especialmente en mujeres), sistemas de producción diversos, acceso a recursos económicos, validación práctica de tecnologías, y características socioculturales del entorno rural. Se destaca la importancia de alianzas estratégicas con municipalidades, Instituto Superior Tecnológico Cajamarca, SENASA y Colegio Médico Veterinario, así como el rol crucial de agricultores líderes. Las clínicas han recibido más de 300 consultas hasta mayo 2016, demostrando que creatividad, flexibilidad y disposición son claves para aumentar el alcance de los servicios de extensión.
Labores culturales para el control de la polilla de la papa: Symmetrischema tangolias (Gyen); Phthorimaea operculella (Zeller)
(Plantwise, 2018-03-08) Cervantes Peralta, Marieta Eliana; Escobal Valencia, Fernando
Hojas volantes para agricultores “Labores culturales para el Control de la polilla de la papa: Symmetrischema tangolias (Gyen); Phthorimaea operculella (Zeller)”, las recomendaciones son relevantes a Perú
Rye production under acid soils and drought conditions: an alternative for the sustainability of high Andean livestock farming in Peru
(MDPI, 2023-07-05) Carrasco Chilón, William Leoncio; Alvarez García, Wuesley Yusmein; Cervantes Peralta, Marieta Eliana; Quilcate Pairazamán, Carlos Enrique; Vásquez Pérez, Héctor Vladimir
The rye (Secale cereale L.) crop shows a high potential to contribute to the sustainability of high Andean livestock because it supports the agroclimatic conditions and acid soils in the Peruvian Andes. The production of green forage, hay, and grain from the rye crop in acid soils was studied with the use of different levels of phosphorus and potassium fertilization in four local rye ecotypes (CBI-001, CSM-001, CJS-001, and CCE-001). The green forage yield (GFY) ranged from 32.35 to 53.62 t ha−1, dry matter from 6.05 to 8.56 t ha−1, and hay from 7.0 to 10.36 t ha−1; nutritional levels ranged from 9.02% to 13.56% protein and 6.50% to 7.75% ash levels, mainly with differences between ecotypes (p < 0.05). No differences existed between fertilization levels for the number of stems per plant, spikes per plant, and grains per ear (p > 0.05). Also, CBI-001 and CCE-001 were superior with 1868.4 and 1797.8 kg ha−1 of grain, respectively (p = 0.0072); the use of 60 kg ha of nitrogen, 120 kg ha−1 of P2O5, and 80 kg ha−1 of K2O gave higher grain and residue yields. The high nutritional value and yield of the rye ecotypes studied in acid soil conditions and without irrigation can be an alternative for livestock feeding and grain production in the rainy season in the Andes as a dual-purpose crop.
Rye production under acid soils and drought conditions: An alternative for the sustainability of High Andean livestock farming in Peru
(MDPI, 2023-07-24) Carrasco Chilon, William Leoncio; Alvarez García, Wuesley Yusmein; Cervantes Peralta, Marieta Eliana; Quilcate Pairazamán, Carlos Enrique; Vásquez, Hector V.
The rye (Secale cereale L.) crop shows a high potential to contribute to the sustainability of high Andean livestock because it supports the agroclimatic conditions and acid soils in the Peruvian Andes. The production of green forage, hay, and grain from the rye crop in acid soils was studied with the use of different levels of phosphorus and potassium fertilization in four local rye ecotypes (CBI-001, CSM-001, CJS-001, and CCE-001). The green forage yield (GFY) ranged from 32.35 to 53.62 t ha−1, dry matter from 6.05 to 8.56 t ha−1, and hay from 7.0 to 10.36 t ha−1; nutritional levels ranged from 9.02% to 13.56% protein and 6.50% to 7.75% ash levels, mainly with differences between ecotypes (p < 0.05). No differences existed between fertilization levels for the number of stems per plant, spikes per plant, and grains per ear (p > 0.05). Also, CBI-001 and CCE-001 were superior with 1868.4 and 1797.8 kg ha−1 of grain, respectively (p = 0.0072); the use of 60 kg ha of nitrogen, 120 kg ha−1 of P2O5, and 80 kg ha−1 of K2O gave higher grain and residue yields. The high nutritional value and yield of the rye ecotypes studied in acid soil conditions and without irrigation can be an alternative for livestock feeding and grain production in the rainy season in the Andes as a dual-purpose crop.
Sustainability of Kikuyu Grass (Pennisetum clandestinum) for the Development of Highland Livestock Farming in the Northern Macro-Region of Peru
(Preprints.org, 2024-10-10) Alvarez García, Wuesley Yusmein; Diaz, Arturo; Becerra, Yessica; Vallejos Fernández, Luis A.; Florián, Roy; Carrasco Chilón, William Leoncio; Cervantes Peralta, Marieta Eliana; Quilcate Pairazaman, Carlos; Muñoz Vilchez, Yudith
The productive sustainability of Pennisetum clandestinum in the Peruvian highlands was evaluated through productivity, growth and chemical composition. The effect of the nitrogen (N2) dose applied to the soil, the use of organic matter and the frequency of cutting or phenological age on the productive yields, chemical composition, plant height and growth rate of Kikuyu were determined. Experimentation was carried out under a randomised block design in divided plots. A multivariate analysis of variance (MANOVA) was used to determine the associated differences in each study factor. It was determined that applying 120 kg of N2 increases the annual protein production to 3 454.53 kg ha-¹. yr-¹, and a crude protein (CP) level of 23.54%, the distance of the live fences influences the biomass production to 19 176.23 kg DM ha-¹ at an interval of 8.5 to 11.5 meters from the base of the cypress tree (Cupressus lusitanica). Organic matter favours the biomass yield of Kikuyu. Although there is no difference in dry matter production between 30 and 60 days of cutting, CP production is higher at 30 (p<0.05). The highest DM production per day is obtained at 45 days, generating a higher biomass accumulation of 21 186.9 kg DM ha-¹. yr-¹. The consideration of Pennisetum clandestinum for dairy cattle is viable, taking into account that the possibility of implementing a plant improvement programme on this species is open, aimed at increasing the composition of the diet in high-production cows due to its high yield and good chemical composition in highland conditions.
Sustainability Potential of Kikuyu Grass (Pennisetum clandestinum) in Livestock Farming of Peru's Highland Regions
(MDPI, 2024-12-16) Alvarez García, Wuesley Yusmein; Díaz, Arturo; Becerra, Yessica; Vallejos Fernández, Luis A.; Florián Lescano, Roy Roger; Carrasco Chilón, William Leoncio; Cervantes Peralta, Marieta Eliana; Quilcate Pairazaman, Carlos; Muñoz Vilchez, Yudith
The productive sustainability of Pennisetum clandestinum in the Peruvian highlands was evaluated through productivity, growth and chemical composition. The effect of the nitrogen (N) rate, organic matter application, and cutting frequency on Kikuyu grass's yield, chemical composition, plant height, and growth rate was investigated. Experimentation followed a randomized block design with split plots. Multivariate analysis of variance (MANOVA) assessed differences across study factors. Applying 120 kg of N ha-1 yr-1 raised the protein yield to 3454.53 kg ha¯¹, with a crude protein (CP) content of 23.54%. Moreover, cypress (Cupressus lusitanica) trees influenced the Kikuyu biomass, producing 19,176.23 kg of dry matter (DM) ha-1 yr-1 at 8.5-11.5 m from the tree base. Organic matter enhanced Kikuyu aboveground biomass. While dry matter production showed no significant difference between 30- and 60-day cutting intervals, CP content was higher at 30 (p < 0.05). Peak daily dry matter (DM) production occurred at 45 days, achieving a biomass accumulation of 21,186.9 kg DM ha-1 yr-1. Given its high yield and favorable chemical composition, Kikuyu is a viable option for dairy cattle feed, especially in highland areas. Implementing a plant improvement program for Kikuyu could further enhance its nutritional value for high-production dairy cows.
Toma de muestras y análisis de suelo agrícola
(Instituto Nacional de Innovación Agraria -INIA, 2024-03-31) Cervantes Peralta, Marieta Eliana
El presente documento informa sobre la toma de muestras y análisis de suelo agrícola.