The growing demand for Calycophyllum spruceanum is causing strong pressure on natural populations due to anthropogenic activities. For this reason, it is urgent to develop propagation technologies and production of plants for reforestation activities and establishment of forest plantations for their use and conservation. The objective of this study was to determine the effect of different substrates and containers on the emergence and growth of C. spruceanum. For this purpose, two experiments were conducted. In the first, four substrates were tested to evaluate seedling emergence, while in the second, the growth and quality of plants in different containers and substrates were determined. The maximum emergence values of 62.3%, emergency speed index (ESI) of 2.2, and mean emergence time of 29.9 were determined using a combination of carbonized rice husk (CRH), chicken manure, and decompos...

 Arbuscular mycorrhizal fungi (AMF) play an important role in ecological restoration, enhancing the establishment of native tree species and agricultural crops. The present study aimed to determine the diversity and distribution of AMF species in capirona (Calycophyllum spruceanum Benth.) that was planted at different times in areas of the department of Ucayali, Peru. Samples were taken from the rhizospheres of this plant in the localities of Yarinacocha (YC), Curimaná (CM), Irazola (IZ), Alexander von Humboldt (VH) and the AMF species were identified. The YC sampling zone, with one year old plants, recorded the highest number of spores (20 spores per g of dry soil) in relation to the 18 year old plantations at VH, CM, IZ with 4, 4 and 3 spores per g of soil. A total of 45 AMF species were identified, finding the greatest diversity in the VH sampling zone with 21 species, followed by t...

The use of allometric equations in the estimation of the commercial volume of wood allows to plan the management Forestry In that sense, the objective in this work was to select the best allometric models to estimate the volume of wood in G. crinita trees, for this, trees between 13.09 m high and 10.58 cm DAP were used on average. For the determination of the best model, the highest adjusted coefficient of determination R2 (˃ R2Aj), lower coefficient of variability (˂ CV%) and lower Furnival index (IF) were considered. Of the 17 existing allometric models for forest species, two were suitable, the model: ln (V) = a + b ln (D) (R2 = 0.93, CV = 11.93%, IF = 0.003444) and the model that uses the combined variable Log: ln (V) = a + b ln (D2*H) (R2 = 0.91, CV = 11.93%, IF = 0.003444), likewise, a third model proposed in this study: ln (V) = a + b ln (D2) + c ln (D * H) - d ln (D2*H) (R2 = 0...

La bolaina blanca (Guazuma crinita Mart, Meliaceae) es una de las especies más importantes de la región Ucayali por su rápido crecimiento y creciente valor en el mercado, convirtiéndola en una especie competitiva al momento de elegir especies para un programa de producción de bienes y servicios sostenible, por ello la determinación de la cantidad de biomasa cumple un papel clave para este fin; en este contexto, fueron evaluados 38 árboles de G. crinita de 31 meses de edad, con diámetro promedio a la atura de la base de 13,33 cm, con un valor máximo y mínimo de 17,4 y 10,2 cm, respectivamente, con desviación estándar de 1,80 cm y un coeficiente de variabilidad de 13%, para una biomasa total promedio de 28,76 Kg, con una desviación estándar de 10,07 y un coeficiente de variabilidad del 35%; se determinó que en la cuenca del río Aguaytia existe una alta relación entre la va...

The use of allometric equations in the estimation of the commercial volume of wood allows to plan the management Forestry In that sense, the objective in this work was to select the best allometric models to estimate the volume of wood in G. crinita trees, for this, trees between 13.09 m high and 10.58 cm DAP were used on average. For the determination of the best model, the highest adjusted coefficient of determination R2 (˃ R2Aj), lower coefficient of variability (˂ CV%) and lower Furnival index (IF) were considered. Of the 17 existing allometric models for forest species, two were suitable, the model: ln (V) = a + b ln (D) (R2 = 0.93, CV = 11.93%, IF = 0.003444) and the model that uses the combined variable Log: ln (V) = a + b ln (D2*H) (R2 = 0.91, CV = 11.93%, IF = 0.003444), likewise, a third model proposed in this study: ln (V) = a + b ln (D2) + c ln (D * H) - d ln (D2*H) (R2 = 0...

The white ball (Guazuma crinita Mart, Meliaceae) as one of the most important species in the Ucayali region due to its rapid growth and increasing market value, makes it a competitive species when choosing species for a program of production of goods and sustainable services, therefore determining the amount of biomass plays a key role for this purpose; In this purpose, the 38 trees of G. crinita at 31 months of age, with an average diameter at the height of the base of 13.33 cm, with a maximum and minimum value of 17.4 and 10.2 cm, respectively, with a standard deviation of 1.80 cm and a variability coefficient of 13%, for an average total biomass of 28.76 Kg, with a standard deviation of 10.07 and a variability coefficient of 35%; It was determined that there is a high relationship between the independent variable diameter at the height of the base (dab) and the total aerial biomass of...

Se estimó la huella de carbono de la venta del fruto, la producción de bebidas y helados de aguaje. El estudio se realizó en la ciudad de Pucallpa, distrito de Callería, donde se venden los productos del aguaje y en el caserío Túpac Amaru, distrito de Manantay donde se extraen los frutos del aguaje, ambos lugares ubicados en la provincia de Coronel Portillo, departamento de Ucayali. Se estudió la huella de carbono de todas las fases de la comercialización de los frutos, así como de la producción de bebidas y helados de aguaje, para lo cual se colectó información sobre las emisiones de CO2, a través de encuestas realizadas a 46 productores. Se estimó que la huella de carbono de la venta del fruto de aguaje fue de 0,07031 KgCO2eq por cada fruto obtenido talando la palmera y puesto en los centros de venta minoristas de la ciudad de Pucallpa. Las emisiones fueron menores cuando...

The carbon footprint of the sale of the fruit and the production beverages and ice creams of aguaje was estimated. The study was carried out in the city of Pucallpa, Callería district, where the products are sold, and in the Túpac Amaru hamlet, Manantay district where the fruits are extracted, which are both located in the province of Coronel Portillo, department of Ucayali. The carbon footprint of all the phases of the commercialization of the fruits, and the production of drinks and aguaje ice creams were studied, for which information on their CO2 emissions was collected through surveys carried out to 46 producers. It was estimated that the carbon footprint of the sale of the aguaje fruit was 0.07031 KgCO2eq for each fruit obtained by felling the palm tree and placed in the retail centers of the city of Pucallpa. Emissions were lower when the fruit was harvested without cutting down...