Repositorio Institucional INIA (Inst. Nacional de Innovacion Agraria)
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Traditional potato tillage systems in the Peruvian Andes impact bacterial diversity, evenness, community composition, and functions in soil microbiomes
No full textThe soil microbiome, a crucial component of agricultural ecosystems, plays a pivotal role in crop production and ecosystem functioning. However, its response to traditional tillage systems in potato cultivation in the Peruvian highlands is still far from understood. Here, ecological and functional aspects of the bacterial community were analyzed based on soil samples from two traditional tillage systems: 'chiwa' (minimal tillage) and 'barbecho' (full tillage), in the Huanuco region of the Peruvian central Andes. Similar soil bacterial community composition was shown for minimal tillage system, but it was heterogeneous for full tillage system. This soil bacterial community composition under full tillage system may be attributed to stochastic, and a more dynamic environment within this tillage system. 'Chiwa' and 'barbecho' soils harbored distinct bacterial genera into their communities, indicating their potential as bioindicators of traditional tillage effects. Functional analysis revealed common metabolic pathways in both tillage systems, with differences in anaerobic pathways in 'chiwa' and more diverse pathways in 'barbecho'. These findings open the possibilities to explore microbial bioindicators for minimal and full tillage systems, which are in relationship with healthy soil, and they can be used to propose adequate tillage systems for the sowing of potatoes in Peru
Guía práctica de inseminación artificial del ganado vacuno en el trópico
No full textDíptico de la “Guía práctica de inseminación artificial del ganado vacuno en el trópico”
Dirigido al personal de la Dirección de Supervisión y Monitoreo en las Estaciones Experimentales Agrarias (DSME)
No full textEl evento consistió en (01) un taller denominado: “Desarrollo de capacidades en el uso de la Plataforma de Gestión del Conocimiento", organizado por la Dirección de Gestión de la Innovación Agraria (DGIA) del INIA, el cual tuvo como objetivo mejorar las competencias en gestión del conocimiento del personal de la Dirección de Supervisión y Monitoreo en las Estaciones Experimentales Agrarias (DSME) para desarrollar investigaciones mediante el uso de la Plataforma de Gestión del Conocimiento (PGC).I. INTRODUCCION; II. MARCO LEGAL; III. ANTECEDENTES; IV. OBJETIVOS; V. IMPORTANCIA; VI. USO DE LA PGC-INIA; VII. CONSEJOS EN EL USO DE LA PGC; VIII. REPORTES POWER B
Water storage–discharge relationship with water quality parameters of Carhuacocha and Vichecocha lagoons in the Peruvian puna highlands
No full textMost Andean lakes and lagoons are used as reservoirs to manage hydropower generation and cropland irrigation, which, in turn, alters river flow patterns through processes of storage and discharge. The Carhuacocha and Vichecocha lagoons, fed by glaciers, are important aquatic ecosystems regulated by dams. These dams increase the flow of the Mantaro River during the dry season, supporting both energy production and irrigation for croplands. Water quality in the Carhuacocha and Vichecocha lagoons was assessed between storage and discharge events by using the Canadian Council of Ministers of the Environment Water Quality Index (CCME WQI) and multivariate statistical methods. The quality of both lagoons is excellent during the storage period; however, it decreases when they are discharged during the dry season. The most sensitive parameters are pH, dissolved oxygen (DO), and biochemical oxygen demand (BOD). This paper details the changes in water quality in the Carhuacocha and Vichecocha lagoons during storage and discharge events.This research was funded by the INIA project “Mejoramiento de los servicios de investigación y transferencia tecnológica en el manejo y recuperación de suelos agrícolas degradados y aguas para riego en la pequena y mediana agricultura en los departamentos de Lima, Áncash, San Martín, Cajamarca, Lambayeque, Junín, Ayacucho, Arequipa, Puno y Ucayali”, CUI 2487112
Reporte de Repositorio Institucional del 01 al 31 de Agosto 2024
No full textDurante el mes de agosto se incorporaron 7 publicaciones técnico científicas, en el Repositorio Institucional del INIA, contando a la fecha con un total de 2423 publicaciones, divididas en comunidades y colecciones. El objetivo de este reporte es mantener actualizados los datos sobre las publicaciones técnico-científicas que vienen siendo incorporadas por el área a cargo de la administración del Repositorio Institucional del INIA
Yield prediction models for rice varieties using UAV multispectral imagery in the Amazon lowlands of Peru
No full textRice is cataloged as one of the most widely cultivated crops globally, providing food for a large proportion of the global population. Integrating Geographic Information Systems (GISs), such as unmanned aerial vehicles (UAVs), into agricultural practices offers numerous benefits. UAVs, equipped with imaging sensors and geolocation technology, enable precise crop monitoring and management, enhancing yield and efficiency. However, Peru lacks sufficient experience with the application of these technologies, making them somewhat unfamiliar in the context of modern agriculture. In this study, we conducted experiments involving four distinct rice varieties (n = 24) at various stages of growth to predict yield using vegetation indices (VIs). A total of nine VIs (NDVI, GNDVI, ReCL, CIgreen, MCARI, SAVI, CVI, LCI, and EVI) were assessed across four dates: 88, 103, 116, and 130 days after sowing (DAS). Pearson correlation analysis, principal component analysis (PCA), and multiple linear regression were used to build prediction models. The results showed a general prediction model (including all the varieties) with the best performance at 130 days after sowing (DAS) using NDVI, EVI, and SAVI, with a coefficient of determination (adjusted-R2 = 0.43). The prediction models by variety showed the best performance for Esperanza at 88 DAS (adjusted-R2 = 0.94) using EVI as the vegetation index. The other varieties showed their best performance using different indices at different times: Capirona (LCI and CIgreen, 130 DAS, adjusted-R2 = 0.62); Conquista Certificada (MCARI, 116 DAS, R2 = 0.52); and Conquista Registrada (CVI and LCI, 116 DAS, adjusted-R2 = 0.79). These results provide critical information for optimizing rice crop management and support the use of unmanned aerial vehicles (UAVs) to inform timely decision making and mitigate yield losses in Peruvian agriculture.This research was funded by the project “Creación del servicio de agricultura de precisión en los Departamentos de Lambayeque, Huancavelica, Ucayali y San Martín” of the Instituto Nacional de Innovación Agraria (INIA), which is part of the Ministerio de Desarrollo Agrario y Riego (MIDAGRI) of the Peruvian Government, with grant number CUI 2449640
Catálogo de olivo del Banco de Germoplasma del INIA
No full textEl INIA pone este documento a disposición de investigadores, profesionales, productores y público en general interesados en la diversidad del olivo, su conservación, valoración y el mejoramiento genético orientado a optimizar los beneficios que pueden obtenerse de esta especie tan apreciada en el mundo
Dirigido al personal de la Dirección de Supervisión y Monitoreo en las Estaciones Experimentales Agrarias (DSME)
No full textEl evento consistió en (01) un taller denominado: “Desarrollo de capacidades en el uso de la Plataforma de Gestión del Conocimiento", organizado por la Dirección de Gestión de la Innovación Agraria (DGIA) del INIA, el cual tuvo como objetivo mejorar las competencias en gestión del conocimiento del personal de la Dirección de Supervisión y Monitoreo en las Estaciones Experimentales Agrarias (DSME) para desarrollar investigaciones mediante el uso de la Plataforma de Gestión del Conocimiento (PGC).I. INTRODUCCION; II. MARCO LEGAL; III. ANTECEDENTES; IV. INTERFAZ DEL REPOSITORIO; V. BUSQUEDA DE DOCUMENTOS TECNICOS PARA EL RI; VI. METADATOS DUBLIN CORE; VII. BUSQUEDA DE DOCUMENTOS TECNICOS EN EL RI
Litter decomposition rates of four species of agroecological importance in the Peruvian coast and Andean highland
No full textCrop residue decomposition is fundamental for ecosystems, influencing carbon cycling, organic matter accumulation, and promoting plant development through nutrient release. Therefore, this study aimed to ascertain the rate of decomposition of four commonly cultivated crops (alfalfa, maize, avocado, and eucalyptus) along the northern coast of Lima (Huaral) and in the Ancash Mountain range (Jangas) areas. Decomposition rates were assessed using mass loss from decomposition bags measuring 15 × 10 cm, filled with 10–15 g of material tailored to each species, and buried at a depth of approximately 5 cm. Sampling occurred every three months over a year, totaling four sampling events with three replicates each, resulting in ninety-six experimental units. The findings demonstrate that the decomposition rates and the release of nutrients were markedly greater in Huaral for maize and avocado. In contrast, these rates were notably elevated in Jangas for alfalfa and eucalyptus. The leaf litter of avocado and eucalyptus (tree) had periods of accumulation and release of heavy metals such as Cd. The initial C/N ratio was one of the main factors related to the nutrient decomposition rate; in contrast, there were no significant relationships with soil properties at the study sites.This research was funded by the INIA project “Mejoramiento de los servicios de investigación y transferencia tecnológica en el manejo y recuperación de suelos agrícolas degradados y aguas para riego en la pequena y mediana agricultura en los departamentos de Lima, Áncash, San Martín, Cajamarca, Lambayeque, Junín, Ayacucho, Arequipa, Puno y Ucayali” CUI 2487112
Resistance and sensitivity of Fasciola hepatica against four active anthelmintic principles in guinea pigs (Cavia porcellus), Cajamarca, Peru
No full textEl estudio tuvo por objetivo evaluar la eficacia de cuatro antihelmínticos en el control de Fasciola hepatica en la Estación Experimental del Instituto Nacional de Innovación Agraria (INIA), Baños del Inca, Cajamarca, Perú. Se utilizaron 40 cuyes de 5 a 12 meses de edad, de la línea Inka infectados naturalmente con F. hepatica (>1 HPG) no desparasitados en los últimos 4 meses, bajo el mismo sistema de manejo y alimentación. Los cuyes fueron distribuidos en cuatro grupos (n=10): triclabendazol (25 mg/kg), closantel (20 mg/kg) vía oral, clorsulón + ivermectina (15 mg/kg en base a clorsulón) y nitroxinil (50 mg/kg), vía subcutánea. Se determinó la carga parasitaria el día 0 y 30 posdosificación. El Test de Reducción del Conteo de Huevos determinó una eficacia de 0% para triclabendazol y 100% para closantel, clorsulón + ivermectina, y nitroxinil. Se concluye F. hepatica es resistente al triclabendazol y sensible a closantel, clorsulón + ivermectina y nitroxinil en cuyes del INIA-Cajamarca