Examinando por Materia "Peruvian Andes"

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Boosting biomass and leaf area with biol: morphological and yield responses of Pennisetum in the Peruvian highlands
(MDPI, 2026-03-31) Huaman Lizana, Darwin; Tarifa, Waldyr; Rodriguez, Misael; Tecsi Taipe, Sayda; López Mendoza, Yolvi; Ruiz Llontop, Deysi; Saucedo Uriarte, José Américo; Vásquez, Héctor V.; Mejía, Flor L.; Paucar, Ysai
The intensive use of chemical fertilizers in agriculture contributes to environmental pollution, which has driven the search for sustainable alternatives such as organic fertilizers. Among these, biofertilizer has garnered interest due to its potential to improve crop growth and yield. The objective of this study was to evaluate the effect of two types of biofertilizer: Bio Chumbinia (standardized) and traditional biofertilizer, as well as a control treatment (water), on the morphology, growth, yield, and leaf area of Maralfalfa (Pennisetum sp.). Morphological and growth variables were measured every 14 days, while yield and leaf area were evaluated in two successive periods corresponding to 42 days of growth. The results indicated that most morphological and growth parameters were significantly influenced by treatment, time, and evaluation (p < 0.05), except for tiller number, blade number, and the blade emergence rate (p > 0.05). Bio Chumbinia showed superior values compared with the control at 6.0 cm for plant height, 0.1 cm/day in the growth rate, 4.1 cm for blade length, and 1.2 mm for blade width; when compared with the traditional biol, the values were similar. The growth rate and leaf emergence peaked on day 14 and subsequently declined. The fresh and dry matter yields were consistently higher on Bio Chumbinia treatment than others (p < 0.05). Although no differences were found for blade weight and leaf area between Bio Chumbinia and the control, the leaf area in Bio Chumbinia was 1400 cm2 more than the control. The second evaluation showed improved productivity, which is consistent with the higher values on the morphological characteristics. No differences were observed in the leaf-to-stem + sheath dry matter ratio. These results demonstrate the potential of Bio Chumbinia to improve the productive performance of Maralfalfa as a foliar fertilizer in sustainable agricultural systems in Peru.
Comparative analysis of morphology, resource allocation, and nutritional characteristics in populations of Festuca dolichophylla cultivated in the Andean region of Peru
(MDPI, 2026-02-03) Paucar, Ysai; Paucar, Samuel Porfirio; Mejía, Flor Lidomira; Vásquez, Héctor Vladimir; Zagaceta, Luis Homero; Saucedo Uriarte, José Américo; Yoplac, Ives; Flores, Enrique Ricardo; Contreras, José Luis; Argote Quispe, Gregorio Fructuoso; Yalli Huamaní, Teodoro Bill; Aguirre, Lucrecia
Grasslands are ecosystems of global importance; in Peru, they represent more than half of the country's territory. However, few studies have been conducted on high Andean grasslands. The objective was to study morphological, productive, resource allocation, and nutritional characteristics in five populations of Festuca dolichophylla grown under similar conditions. Populations that originated from Huancavelica Community and University, Junín, Pasco, and Puno were grown in Huancavelica Community in a randomized block design. After twelve months, a uniformization cut was performed, and five months later they were evaluated. Morphological characteristics, productivity, and resource allocation were analyzed with ANCOVA, the nutritional characteristics were analyzed with one-way ANOVA (considering population as a factor). Significant differences (p < 0.05) were found for morphological characteristics such as height, number and length of stems, and number of inflorescences. The resource allocation was 13.8% root, 18.4% crown, 29.2% culms + sheaths, 34.8% blades, and 3.8% inflorescence, with no differences between populations (p > 0.05). The Puno population stood out for its greater biomass, linked to more stems and inflorescences. Nutritional characteristics varied among populations in terms of crude fiber, neutral detergent fiber, acid detergent fiber, and in vitro dry matter digestibility. These findings are useful for selecting populations in revegetation or genetic breeding programs.
Habitat Suitability Distribution of Genus Gynoxys Cass. (Asteraceae): An Approach to Conservation and Ecological Restoration of the Andean Flora in Peru.
(MDPI, Basel, Switzerland., 2025-03-10) Coronel Castro, Elver; Meza Mori, Gerson; Pariente Mondragon, Eli; Haro, Nixon; Oliva Cruz, Manuel; Barboza , Elgar; Amasifuen Guerra, Carlos A.; Revilla Pantigoso, Italo; Tariq , Aqil; Guzman Valqui, Betty Karina
The study used species distribution models (MaxEnt) to analyze the ecological suitability of the genus Gynoxys in Peru. Bioclimatic, edaphic and topographic variables were integrated to predict areas with high development potential. Potential distribution maps were generated, and model validation showed outstanding performance (AUC > 0.9). The results indicated that variables such as minimum temperature in the warmest season and soil moisture are determinants in the distribution of the Discoide, Gynoxys and Praegynoxys clades. It is concluded that the conservation of the genus requires protection strategies to ensure the sustainability of these montane ecosystems.