Examinando por Autor "Solórzano Acosta, Richard Andy"

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Assessment of soil characteristics and the productive potential of native Poaceae forage species in the Central Highlands of Peru
(Polish Society of Ecological Engineering, 2025-06-10) Arias Arredondo, Alberto; Yalli Huamaní, Teodoro Bill; Cruz Luis, Juancarlos Alejandro; Requena Rojas, Edilson Jimmy; Solórzano Acosta, Richard Andy
Given the increasing pressure on natural grassland ecosystems in the Peruvian high Andes, optimizing the use of native forage species has become essential for understanding the relationship between soil characteristics and the productive potential of these plants. This study evaluated the relationship between soil properties and the produc tive potential of three native forage species: Festuca dolichophylla, Cinnagrostis vicunarum, and Jarava ichu. The research was conducted in natural grasslands in the district of Yauli, province of Yauli, department of Junin, at approximately 4000 m.a.s.l. During the dry season 2023, soil samples were collected following standardized protocols, and key soil parameters were analyzed. The nutritional characteristics of the forage species were also assessed, including dry matter content, total protein, calcium, phosphorus, in vitro organic matter digestibility, and metabolizable energy. The results revealed significant differences among species. Festuca dolichophylla exhibited the highest protein content (10.7%), superior digestibility (52.5%), and greater metabolizable energy (8.4 MJ∙kg-1), making it the most suitable forage option for livestock in the highland ecosystem over 4000 m.a.s.l., where en vironmental factors constrain agricultural activity. In contrast, Cinnagrostis vicunarum and Jarava ichu showed lower protein levels, with Jarava ichu displaying particularly low digestibility (28.9%) and energy content (4.6 MJ∙kg-1), limiting its productive potential despite its high dry matter yield. These findings provide a strong scien tific foundation for developing sustainable grassland management strategies in the Peruvian Andes, supporting the implementation of agronomic practices that enhance forage productivity while contributing to biodiversity conser vation. Moreover, this study highlights the importance of soil characterization as a key tool for optimizing forage resource utilization in high-altitude farming systems, facilitating informed decision-making in land management and environmental remediation policies.
Carbon storage in coffee agroforestry systems: Role of native and introduced shade trees in the central Peruvian Amazon
(MDPI, 2025-06-30) Salgado Veramendi, Noelito; Romero Chavez, Lorena Estefani; Huerto Pajuelo, Eldhy Sianina; Ibarra Porra, Carolina del Carmen; Cunyas Camayo, Joseph Michael; Aldava Pardave, Uriel; Vallejos Torres, Geomar; Solórzano Acosta, Richard Andy
What is the potential impact on carbon storage of the native and introduced tree species commonly associated with coffee in the central Peruvian Amazon? Coffee is a pivotal crop within the Peruvian economy. Nevertheless, the establishment of new plantations—driven by the subsistence needs of smallholder farmers—has led to expansion into forested areas. Given the significance of this crop and the demonstrated ecosystem benefits of agroforestry systems (AFSs), the aim of this study was to evaluate the influence of native and introduced shade tree species on carbon storage in coffee plantations. This study was observational and exhibited characteristics of an unbalanced incomplete block design. Agroforestry systems (AFSs) with shade tree species such as Inga, Retrophyllum rospigliosii, Eucalyptus and Pinus, and three unshaded coffee plantations, were included in this study. The total carbon stored in each AFS was higher than in unshaded coffee plantations. Soil contributed between 47% and 91% to total carbon storage, shade trees (24–46%), coffee (2–7%), leaf litter (0.6–1.9%) and shrubs and herbaceous plants (0.02–0.3%). The AFS with R. rospigliosii achieved the highest carbon storage with 190.38 Mg ha−1, highlighting the compatibility of this species with coffee plantations, as well as its positive effect on climate change mitigation in deforested areas.
Guía para el cultivo del hongo comestible Pleurotus spp. utilizando ichu (Jarava ichu) como sustrato
(Instituto Nacional de Innovación Agraria (INIA), 2025-05-13) Oscco Laura, Persing; Dionisio Melo, Enmanuel Luis; Hermoza Ayme, Nilton Alexander; Solórzano Acosta, Richard Andy
El INIA, a través de la Dirección de Supervisión y Monitoreo en las Estaciones Experimentales Agrarias (DSME), viene ejecutando el proyecto de inversión “Mejoramiento de los servicios de investigación y transferencia tecnológica en el manejo y recuperación de suelos agrícolas degradados y aguas para riego en la pequeña y mediana agricultura en los departamentos de Lima, Áncash, San Martín, Cajamarca, Lambayeque, Junín, Ayacucho, Arequipa, Puno y Ucayali”, con CUI N° 2487112, el cual tiene como uno de sus objetivos evaluar alternativas tecnológicas para el manejo de suelos y agua en la producción agrícola. Una de las actividades económicas de las zonas altoandinas es la ganadería, la cual depende directamente del aprovechamiento de los recursos naturales. Por ello, la conservación de los pastizales naturales, entre ellos los de ichu (Jarava ichu) es imprescindible para la sostenibilidad de esta actividad. Sin embargo, la quema tradicional del ichu es una actividad realizada para regenerar pasto y abrir nuevas áreas de cultivo, con un impacto negativo sobre el medio ambiente. Ante esta situación, el INIA viene trabajando de manera colaborativa con el Servicio Nacional Forestal y de Fauna Silvestre (SERFOR) en acciones para impulsar la economía de las comunidades rurales y evitar malas prácticas en los pastizales altoandinos de ichu. En ese sentido, se propone utilizar el ichu como sustrato para la producción de hongos comestibles (Pleurotus spp.), como una alternativa ecológica para el aprovechamiento de este recurso. La Guía para el cultivo de hongo comestible Pleurotus spp. utilizando ichu (Jarava ichu) como sustrato proporciona información sobre la biología del hongo, las características del sustrato y los insumos requeridos, además de una metodología detallada que abarca la preparación, sanitización, inoculación, incubación e inducción a la fructificación. Asimismo, incluye indicadores de productividad y recomendaciones para optimizar el cultivo, así como el aprovechamiento del sustrato agotado como abono orgánico. De esta manera, fomenta una gestión responsable de los recursos y la mejora continua de la producción agrícola.
Soil quality variation associated with land cover in the Peruvian jungle of the Junín region
(Elsevier, 2025-05-03) Carbajal Llosa, Carlos Miguel; Moya Ambrosio, Fernanda; Barja Ingaruca, Antony Marcos; Ottos Diaz, Elvis; Aguilar Tito, Cinthya; Advíncula Zeballos, Orlando; Cruz Luis, Juancarlos Alejandro; Solórzano Acosta, Richard Andy
In the Junín jungle, inappropriate agricultural management practices for a long time can adversely affect soil quality. This has driven the development of multiple soil quality evaluation methods that are highly demanding in terms of economic and human resources. This study aimed to evaluate the effect of land-use change from natural ecosystems to agricultural systems by determining soil quality in the jungle of the Junin Region. Soil samples were collected between December 2021 and July 2022 in the Chanchamayo and Satipo provinces in the Junín region. Seventy-four samples were determined using stratified sampling, along with the support provided by the stacking of five spatial layers. Physical, chemical, and biological indicators, along with land cover type data from the European Space Agency (ESA) WorldCover product, were determined. A minimum data set (MDS) was established through correlation analysis, from which principal component analysis (PCA) was performed. Finally, the weighted soil quality index (SQIw) was calculated by integrating the most essential variables identified through PCA. It was found that forest cover soils had a higher SQIw than soils with crops and grassland cover. According to PCA, the soil quality variables that contributed the most are potassium (K) content and pH. It was concluded that the jungle soil quality in the Junín region is moderate to low, depending on the coverage. In addition, more significant degradation was observed in grassland-covered areas, particularly in the Chanchamayo province than in the Satipo province.