Repositorio Institucional INIA (Inst. Nacional de Innovacion Agraria)
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In vitro and in vivo anthelmintic activity of Artemisia absinthium against gastrointestinal nematodes of free-grazing goats from Ayacucho, Peru
Get PDFObjective: The study assessed the anthelmintic activity of Artemisia absinthium ethanolic extract for controlling gastrointestinal nematodes in goats, both in vitro using infective larvae and in vivo in naturally infected goats under free-grazing conditions in the region of Ayacucho, Peru.
Materials and Methods: For the in vitro assay, a larval motility inhibition test was performed on Trichostrongylus spp. infective larvae from goats using three different dilutions: 150, 175, and 200 mg/ml of the plant extract. In vivo efficacy was evaluated through the fecal egg count reduction test (FECRT), which was applied to 15 naturally infected Creole goats in one community. Animals were randomly assigned to 3 experimental groups and treated orally with 600 mg/kg of the plant extract. Fecal samples were collected directly from the rectum on days 0 (pre-treatment) and 7 and 15 post-treatment for egg count analysis.
Results: In vitro results showed the highest inhibition of larval motility (81.79%) and larvicidal efficacy (82.2%) at the highest extract concentration (200 mg/ml). However, the in vivo results indicated that A. absinthium, at the concentration used, did not exhibit any significant effect on the FECRT.
Conclusion: Although A. absinthium showed promising in vitro anthelmintic effects, the extract failed to demonstrate significant efficacy in vivo at the tested dose. Additionally, continuous monitoring of drugs in the region of study is strongly recommended based on the results obtained for albendazole.The authors would like to express their gratitude to the goat producers of Ayacucho, Peru, for their cooperation in conducting the experiment and assisting with sample collection. They would also like to thank the technical team of the research goat project (CUI N°2506684), Instituto Nacional de Innovación Agraria (INIA), and the team of the Parasitology Laboratory, UNALM. This research is part of Vania Flores Prado's undergraduate thesis
Estimation of aboveground biomass and carbon sequestration in a cocoa agroforestry system using UAV-LiDAR in northwestern Peru
Get PDFAccurate estimation of biomass and carbon in agroforestry systems is essential to assess their contribution to climate change mitigation and to improve their management. In this context, UAV-mounted LiDAR technology emerges as a fast, accurate, and non-destructive alternative for the structural characterization of cocoa agroforestry systems. This study aimed to estimate and analyze structural parameters, mainly tree height and diameter at breast height (DBH), as well as to calculate aboveground biomass and carbon sequestration in a cocoa agroforestry system, using LiDAR data obtained with a DJI Matrice 350 RTK UAV equipped with a Zenmuse L2 sensor, complemented by automatic tree segmentation in LiDAR360 and the application of species-specific allometric equations. The results showed a 93 % segmentation efficiency, with accuracies of 0.93 and 0.99 for DBH and height estimations, respectively. The evaluated plot, located at the Yanayacu Experimental Center (Jaén, Peru) and covering an area of 0.58 ha, had stored 15,492.5 kg of aboveground biomass and 7746.25 kg of aboveground carbon, with Mangifera indica and Cocos nucifera contributing more than 80 %. Consequently, this approach demonstrates the potential of UAV-based LiDAR to generate accurate and detailed information on system structure, enabling optimized management of high-biomass species and the development of more efficient and sustainable management strategies.This research was funded by the Instituto Nacional de Innovación Agraria (INIA) through an Investment Project with CUI No. 2472675 entitled: "Mejoramiento de los servicios de investigación y transferencia de tecnología agraria en la estación agraria experimental Baños del Inca en la localidad de Baños del Inca del distrito de Baños del Inca - provincia de Cajamarca - departamento de Cajamarca"
Transformation of Terraces with Irrigation Systems: Profitability and Water Savings in Potato Crop (Solanum tuberosum L.)
No full textMDPI stays neutral with regard to jurisdictional claims in published maps and institutional affiliations.In recent decades, climate change has intensified the challenges in agriculture, increasing the incidence of water and heat stress during critical stages of the crop cycle. It includes the exacerbation of the seasonality of rainfall and temperature. This significantly affects their development and yield. In addition, climate change has reduced irrigation water availability, highlighting the need to evaluate joint strategies to increase water productivity. These strategies include the implementation of irrigation systems, the use of terraces, and the application of deficit irrigation (DI). In this context, the present research aims to evaluate the irrigation water productivity (WPirri) and the economic water productivity (EWP) of the combined use of DI through a pressurized irrigation system in terraces of the southern highlands of Peru for a potato crop. The treatments included L0: traditional surface irrigation with irrigation depth equivalent to 100% ETc, L1: drip irrigation with irrigation depth equivalent to 100% ETC, L2: drip irrigation with DI at 75% ETc, and L3: drip irrigation with DI at 50% ETc. The DI treatments (L2 and L3) were implemented by forming stolons (60 DAS). As a result, L2 allows saving irrigation water of 3930 m³ ha−1 compared to L0 and 1164 m³ ha¯¹ compared to L1. It means a WPirri of 6.15 ± 0.35 kg m−3 allowing a commercial yield (CY: 27.15 ± 1.47 t ha¯¹) statistically similar to L1 (WPirri: 5.45 ± 0.34 kg m−3; CY: 30.14 ± 1.83 t ha¯¹) and higher than the traditional surface irrigation (WPirri: 2.63 ± 0.23 kg·m−3; CY: 21.62 ± 1.99 t ha¯¹). This water saving meant a net income of 3097.04 ± 435.52 USD ha¯¹ for L2, close to L1 (4421.12 ± 724.24 USD ha¯¹), and much higher than L0 (1664.50 ± 834.24 USD ha¯¹). The results suggest that using drip irrigation systems in terraced crops optimizes water savings, maintains yields and profitability, and could promote the modernization of terraces in rural environments.This research was funded by the INIA project CUI 2487112 “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”.Introduction
Materials and Methods
Study Area
Experimental Design
Physical, Hydraulic, and Chemical Characteristics of Soils
Conducting the Experimental Plot
Irrigation Management
Determination of Biometric Variables and Performance Components
Water Productivity
Profitability of Cultivation
Economic Water Productivity
Statistical Analysis
Results
Effect on Biometric Characteristics of Potato
Effect on Potato Yield
Crop Water Productivity
Discussion
Conclusion
Soil management in Lepidium meyenii (maca) monoculture: trends and challenges for small farmers around Lake Chinchaycocha in the Andean highlands of Junin (Peru)
No full textIntroduction: Monoculture is a significant concern due to its negative impact on soil quality, resource productivity, and agricultural sustainability, particularly in vulnerable communities. This research aims to evaluate high Andean soil management for maca monoculture. Materials and methods: To this end, interviews were conducted with maca farmers adjacent to Lake Chinchaycocha. The effect on soil quality was evaluated based on principal component analysis (PCA), weighted soil quality index (SQIw), and physico-chemical characteristics. Results: The results indicated differences between farmers in agronomic management, monoculture period (from 5 to 9 years), and fallow time (up to 10 years in the best cases). Regarding soil quality, the PCA highlighted boron andtotal nitrogen locations in the same quadrant, with the highest contribution to the analysis. Finally, the SQIw showed that soils without maca cultivation presented better quality. Conclusion: This research’s results indicate a need to optimize soil management practices, especially for small farmers, who are the most vulnerable group. In addition, further studies on boron and nitrogen availability in soils cultivated with maca are required, emphasizing areas that exceed 10 years of continuous use.The author(s) declare financial support was received for the research, authorship, and/or publication of this article. This research was funded by the INIA project CUI 2487112 “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 Martın, Cajamarca, ́Lambayeque, Junín, Ayacucho, Arequipa, Puno y Ucayali ́
Reporte de Investigadores del INIA en RENACYT del 01 al 31 de diciembre 2024
No full textEn este reporte de investigadores del INIA en RENACYT se observa que al finalizar el mes de diciembre se cuenta con un total de 102 investigadores, distribuidos a nivel nacional en las diferentes Estaciones Experimentales Agrarias. El objetivo de este reporte es mantener actualizados los datos sobre los investigadores del INIA calificados en el RENACYT
Reinvindication of pre-hispanic agricultural technologies for a future food crisis: A scientometric study of the high fields based on citespace and VOSviewer
No full textThis study aimed to bibliometrically analyze the scientific production on pre-Hispanic agricultural technologies, highlighting their potential to address contemporary challenges related to food security and sustainability. To achieve this, 584 documents from SCOPUS (1932–2024) were examined using VOSviewer and CiteSpace, enabling the mapping of co-authorship networks, keywords, and institutional collaborations, as well as reviewing citation indicators, h-index, and gindex. The results indicate a substantial increase in publications since the 1980s, with accelerated growth from the 2000s onward. The United States leads in publication volume, followed by the United Kingdom, China, India, and France. Prominent among the research institutions are multidisciplinary centers specializing in archaeology, ecology, and biotechnology. Influential journals in the field include Journal of Archaeological Science, The Holocene, and Vegetation History and Archaeobotany. The keyword analysis underscores the significance of ancestral agricultural systems (raised fields, terraces, chinampas) and the integration of modern methodologies (genomics, remote
sensing) to enhance their applicability in climate change scenarios. In conclusion, the growing attention to these technologies highlights their value as viable and sustainable alternatives, rooted in agroecological diversity, to strengthen food security and increase the resilience of modern agricultural systems
Species of the genus Abuta (Anomospermeae, Menispermaceae) from Peru
No full textEl género Abuta constituye el segundo taxón más diverso dentro de las Menispermaceae neotropicales. La presente investigación documenta las 12 especies registradas en territorio peruano, proporcionando una caracterización morfológica detallada de cada taxón, sintetizada en una clave dicotómica para su identificación. Se presenta documentación fotográfica de especímenes, tanto in situ como preservados en herbario, para todas las especies excepto A. aristeguietae. Adicionalmente, se analiza la distribución geográfica de cada especie, tanto a nivel nacional como global. Es importante señalar que la limitada disponibilidad de especímenes fértiles, frecuentemente restringidos a un solo sexo (ya sea ejemplares estaminados o pistilados), ha representado un desafío significativo para el análisis comparativo interespecífico. Abuta grandifolia destaca como la especie de mayor distribución y frecuencia de colecta; sin embargo, investigaciones recientes sugieren que este taxón comprende un complejo de entidades cuyas delimitaciones taxonómicas requieren mayor estudio
Certificación del Sistema de Vigilancia e Inteligencia del INIA conforme a la Norma UNE 166006:2018
No full textEl Instituto Nacional de Innovación Agraria (INIA) obtuvo la certificación del Sistema de Vigilancia e Inteligencia conforme a la Norma UNE 166006:2018, otorgada por AENOR. Este sistema abarca las áreas de agroquímica, ingeniería agrícola y agronomía, y tiene como objetivo fortalecer las capacidades institucionales para anticipar cambios tecnológicos y científicos que impacten en el desarrollo agrario nacional. La certificación se llevó a cabo en la sede de La Molina, Lima, Perú, y estará vigente hasta el 27 de enero de 2028
Ichu valorization by Pleurotus spp. cultivation and potential of the residual substrate as a biofertilizer
No full textThe high Andean grass Jarava ichu (Poaceae) plays a vital role in water regulation and aquifer recharge. However, its limited use is often linked to forest fires, highlighting the need for sustainable alternatives. Therefore, this study aims to explore the valorization of ichu as a substratefor the cultivation of Pleurotus spp. (P. citrinopileatus, P. djamor and P. ostreatus) and to evaluate the potential of the residual substrate as a biofertilizer, offering an ecological alternative to grassland burning in the Peruvian Andes. Samples of ichu from the district of Tomás (Lima, Peru) were used as culture substrate, analyzing productivity indicators such as crop cycle (CC), biological efficiency (EB) and production rate (PR), together with the nutritional profile of the fungi and the chemical properties of the residual substrate. The results showed an average biological efficiency of 19.8%, with no significant differences (p>0.05) in CC, EB or PR among the species, confirming the viability of ichu as a substrate. The fungi presented a high protein content (24.1-30.41% on a dry basis), highlighting its nutritional value. In addition, the residual substrate exhibited elevated levels of phosphorus (795.9-1296.9 ppm) and potassium (253.1-291.3 ppm) compared to raw ichu (0.11-7.77 ppm for both nutrients). Germination tests on radish seeds showed rates between 80% and 100%, without inhibition, supporting its potential as a biofertilizer. This study demonstrates the doublé potential of ichu as a substrate for the sustainable production of edible mushrooms of high nutritional value and as a source of biofertilizersThis research was funded by the INIA project CUI 2487112 “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
Identification of the optimal substrate for sexual propagation of Cinchona officinalis l.: Implications for conservation and sustainable use
No full textCinchona officinalis L., a tree species of medicinal, ecological and economic importance, inhabits one of the richest and most fragile ecosystems in the world (montane forests) where it contributes to water and climate regulation, erosion control and carbon sequestration. However, the species is subject to strong anthropogenic pressure and is currently endangered. Unfortunately, little is known about propagation and repopulation techniques or the substrate preferences of the species. We designed a randomised trial with four replications in which 12 trial substrates (peat mixed with sand, moss or pine sawdust and supplemented with chicken manure, guano, compost or agricultural soil) were evaluated to identify the optimal substrate for the sexual propagation of Cinchona officinalis seedlings. The physical and chemical properties of the substrates were analysed, and the impact of these on the emergence, biometry and quality of seedlings were evaluated. Statistical analysis was performed using Scott-Knott and Kruskal-Wallis tests (p<0.05), principal component analysis, heatmap analysis and correlation analysis. The substrate composed of peat, moss and agricultural soil (ratio, 2:2:0.5) was found to be optimal, consistently producing the highest emergence rates and superior biometrics and quality indices. These findings represent a remarkable advance in the propagation of C. officinalis and provide valuable insights enabling the vulnerability of this species to be addressed in ecosystems subject to anthropogenic pressures, thus ensuring the conservation and sustainable use of the species.The authors acknowledge the financial support from the National Institute of Agricultural Innovation through the National Forestry Program for the execution of this research