Agricultural production is sensitive to climatic factors and the study of their relationships is essential to understand their behavior in the future; for this reason, the objective of this study was to determine the effect of the determining climatic factors on the production of Myrciaria dubia (Kunth) McVaugh, in Ucayali - Peru, 2009-2019; to do this, through the production function, the effect of climatic factors (temperature and rainfall) determining the production of camu-camu in Ucayali was quantified; considering for this, as dimensions of production: yield per hectare, harvested area and the gross value of production for the period 2009 - 2019 and its projection until 2029, using the ordinary least square method (OLS). It was possible to determine that rainfall is the most important climatic factor on yield with 48.79%; and, by 2029, the yield trend is negative, with a reduction ...

Mediante la función de producción se estudió el impacto de la variabilidad de la temperatura y precipitación pluvial sobre la producción de la palma aceitera, cacao y camu camu en Ucayali; considerando para ello, el rendimiento por hectárea, la superficie cosechada y el valor bruto de la producción del periodo 2009 – 2019 y su proyección hasta el 2029. Se pudo determinar que la temperatura máxima influye sobre el rendimiento de la palma aceitera (30.13%) y el cacao (56.21%) y, en el camucamu, la precipitación pluvial (48.79%); al 2029, el rendimiento de la palma será positivo con un incremento de 3,078 t/ha, para el cacao y en el camucamu es negativo, con una reducción de 0.18 t/ha y 1.12t/ha; respectivamente. La temperatura máxima influye sobre la superficie cosechada de la palma aceitera (79.19%), cacao (68.87%) y camucamu (68.82%); al 2029, será positivo en palma aceit...

En una plantación a pie franco de Myrciaria dubia (H8K), con siete años de edad, ubicado en un suelo aluvial, con el objetivo de conocer la dinámica de absorción de los nutrientes y metales pesados en la biomasa estacional del cultivo de camu camu (Myrciaria dubia H8K), bajo condiciones de un entisol de Yarinacocha; se evaluó en hojas y frutos, en las fases de brotamiento I, brotamiento II, floración, fructificación, llenado de fruto y fruto Maduro: materia seca (Kg.ha.1), rendimiento (t.ha"1) y la absorción total (Kg.ha-1), de N, P, K, Ca, Mg, S, Fe, Mn, Zn, 8, Cu, Pb, Cd y Cr, según los respectivos protocolos del Laboratorio de Suelos y Tejidos de la UNAS. Se efectuó la correlación de Pearson entre las fases fenológicas y la absorción de los elementos nutritivos y pesados y su respectivo modelo matemático. La dinámica de absorción de macronutrientes, expresa un alto gra...

En tres fundos conducidos bajo sistemas semi-extensivos, ubicados en el Km 6 (Fundo 3 – F3), 13 (Fundo 2 – F2) y 19 (Fundo 1 – F1) de la carretera Federico Basadre, se realizó este trabajo de tesis, con el objetivo de conocer la incidencia de endoparásitos en vacunos cruzados, en los primeros meses de edad, en el trópico húmedo de Pucallpa. La población de terneros estudiados fue de 24, diferenciándose entre fundos, por la tendencia de cruces. Se evaluó el peso corporal en kg (PC), nivel de hematocrito de porcentaje (NH) y carga endoparasitaria en hpg (CP). El análisis estadístico se realizó a través del modelo lineal general (GLM), en un arreglo de parcelas divididas en el tiempo (SAS 1997) y la prueba de medidas de Duncan, además del coeficiente de correlación. Los resultados encontrados muestran que tanto el PC como el NH, van disminuyendo a partir de la tercera sem...

Agricultural production is sensitive to climatic factors and the study of their relationships is essential to understand their behavior in the future; for this reason, the objective of this study was to determine the effect of the determining climatic factors on the production of Myrciaria dubia (Kunth) McVaugh, in Ucayali - Peru, 2009-2019; to do this, through the production function, the effect of climatic factors (temperature and rainfall) determining the production of camu-camu in Ucayali was quantified; considering for this, as dimensions of production: yield per hectare, harvested area and the gross value of production for the period 2009 - 2019 and its projection until 2029, using the ordinary least square method (OLS). It was possible to determine that rainfall is the most important climatic factor on yield with 48.79%; and, by 2029, the yield trend is negative, with a reduction ...

Los factores sociales influyen significativamente en el rendimiento de MAD. Se obtuvieron correlaciones altamente significativas en diversos aspectos como el grado de instrucción, años de experiencia, nivel organizacional, capacitaciones de las instituciones públicas o privadas, horas de trabajo. Los factores económicos influyen significativamente en el rendimiento de MAD. Se obtuvieron correlaciones altamente significativas en diversos aspectos como el costo de producción por ha. área sembrada, precio que adquirió la semilla, precio de venta de MAD, acceso a crédito, planificación de los costos de producción, cantidad de trabajadores y el rendimiento por ha. de MAD. Los factores tecnológicos influyen significativamente en el rendimiento de MAD. Se obtuvieron correlaciones altamente significativas en los siguientes aspectos: Variedad de MAD, uso de semilla certificada, aporque...

Introducción. El ajuste de entornos virtuales de enseñanza ha permitido la continuidad de la educación superior a nivel global, y particularmente en el Perú tras la proliferación del virus Covid-19 en el periodo 2020 y 2021. Sin embargo, docentes y estudiantes de comunidades amazónicas aún enfrentan los desafíos de la educación pública, como el acceso limitado y el escaso conocimiento de herramientas tecnológicas educativas, pudiendo esto generar pobre involucramiento y actitudes desfavorables hacia actividades de investigación académica. Objetivo. Se propone establecer un modelo que explique la actitud hacia la investigación, a partir de la percepción de autoeficacia y capacidad para resolver problemas en población universitaria según factores sociodemográficos como: edad, género y año de estudios, durante la educación virtual 2021. Método. Estudio observacional, d...

La investigación tuvo como objetivo, determinar el efecto de diferentes concentraciones de Ácido Indolbutírico (AIB) en el enraizamiento de estaquillas de Annona muricata «Guanábana» en cámara de subirrigación, el cual se desarrolló en el vivero agroforestal de la Universidad Nacional Intercultural de la Amazonía (UNIA), ubicada en el km 0,63 de la carretera San José de Tushmo, distrito de Yarinacocha, provincia de Coronel Portillo, región Ucayali, Perú, entre los meses de agosto a octubre del 2017. Las estaquillas de guanábana fueron recolectadas, cortando las ramitas con tijera de podar, de 10-12 cm de longitud, y un diámetro de 0,5 cm, para luego cortar la mitad de las hojas con un bisturí. Las estaquillas se desinfectaron con fungicida, por 10 minutos y ventilándolos 10 minutos, luego fueron introducidas cerca de 1 cm de su base, en un envase conteniendo las diferent...

The objective of the investigation was to determine the effect of different concentrations of Indolbutyric Acid (AIB) on the rooting of Annona muricata «Guanabana» cuttings in the sub-irrigation chamber, which was developed in the agroforestry vivarium of the Universidad Nacional Intercultural de la Amazonía (UNIA), located at km 0.63 of the San José de Tushmo road, Yarinacocha district, Coronel Portillo province, Ucayali region, Perú, between the months of August to October of 2017. Soursop cuttings were collected, cutting the twigs with pruning shears, with 10-12 cm in length, and a diameter of 0.5 cm, and then cutting half of the leaves with a scalpel. The cuttings were disinfected with fungicide, for 10 minutes and ventilated for 10 minutes, then they were introduced about 1 cm from their base, in a container containing the different AIB solutions, by 3 seconds, and with the hel...

Camu camu (Myrciaria dubia) is a fruit tree native to the Peruvian Amazon. The first plantations were grown at high densities. However, after 20 years of cultivation, the trees exhibit low flowering and fruiting. The objective of this study was to determine the effect of different thinning densities (3 x 3 m; 6 x 3 m; 4.24 x 4.24 x 6 m, and 6 x 6 m) and fruiting pruning on fruit production in 20-year-old Myrciaria dubia plants. The study evaluated several variables, including the number of flower buds, green and harvested fruits, as well as the mass (g) and equatorial diameter (mm) of the harvested fruits, fruit yield (t ha-1), and light intensity (lux). The best results were observed in Myrciaria dubia plants that were influenced by a thinning density of 6 x 3 m and were not pruned. These plants had the highest number of flower buds, green and harvested fruits, fruit yield, and light in...

The camu camu (Myrciaria dubia) is possibly the most important amazonian fruit for its nutraceutical potential, with an ascorbic acid content higher than that of citrus in about 20 times. To evaluate the efficiency of grafting by terminal scion, buds rods were collected from 43 plants selected for high fruit yield, coming from Loreto, Peruvian Amazon, which were grafted onto rootstocks of Roraima, Brazil developed in the experimental nursery of the EMBRAPA, Boa Vista. 215 grafts were performed (five per each selected plant) grown in individual pots with sandy substrate fertilized with nutrient solution. Regarding the rootstocks had an average stem diameter of 8,07 mm in the grafting point located on average 23,22 cm from the neck of the plant. The scion had an average length of 7,30 cm, with 2,24 live shoots and 1,28 dead shoots. It was not found correlation between the percentage of gra...

The camu camu (Myrciaria dubia) is possibly the most important amazonian fruit for its nutraceutical potential, with an ascorbic acid content higher than that of citrus in about 20 times. To evaluate the efficiency of grafting by terminal scion, buds rods were collected from 43 plants selected for high fruit yield, coming from Loreto, Peruvian Amazon, which were grafted onto rootstocks of Roraima, Brazil developed in the experimental nursery of the EMBRAPA, Boa Vista. 215 grafts were performed (five per each selected plant) grown in individual pots with sandy substrate fertilized with nutrient solution. Regarding the rootstocks had an average stem diameter of 8,07 mm in the grafting point located on average 23,22 cm from the neck of the plant. The scion had an average length of 7,30 cm, with 2,24 live shoots and 1,28 dead shoots. It was not found correlation between the percentage of gra...

Se busca evaluar el comportamiento productivo de Cyclanthera pedata en un cultivo acuapónico y convencional en el Distrito de Yarinacocha, Región Ucayali. El sistema acuapónico estuvo sustentado por la crianza de Piaractus brachypomus “Paco”, acondicionados en tanques de crianza. Se realizó el almacigado de las plántulas hasta que tengan 16.33 cm de altura, se trasplantó en una cama de graba (con un sistema de riego proveniente de los tanques de cultivo de peces, con 15 minutos de riego y 45 minutos de descanso), y en camellones en el suelo, se realizó el manejo agronómico correspondiente, se aplicó un Diseño Completamente al Azar (DCA), con 2 tratamientos y 3 repeticiones; determinándose que, el cultivo de la caigua en un sistema acuapónico presentó mayores valores para  el peso de fruto, número de frutos por hectárea y rendimiento por hectárea; mientras que el ...

In South America, o camu-camu has been domesticated, however, for its cultivation there is still little technical information to guarantee its adaptability and productivity in places with a well-defined dry season. The objective of this study was to characterize the spatial distribution of the root system and determine the effective depth (EP) of roots in camu-camu plants with and without mulch (WM) in uplands conditions. In an orchard, 3 plants with 3, 5 and 7 years each were chosen at random. Then mulch composed of grass (Trachypogon plumosus) was placed on a plant of each age in the canopy projection. After 12 months, the volume and EP of the roots in the 3-year-old plants with mulch was 200 mm3 and 0.3 m, and without mulch it was 500 mm3 and 0.48 m, respectively. In 5-year-old plants it was 4000 mm3 and 0.43 m with mulch, and without mulch it was 6000 mm3 and 0.64 m; and in plants wi...

The aim of this research was to evaluate the productive behavior of Cyclanthera pedata in an aquaponic and conventional crop in the District of Yarinacocha, Ucayali Region. The aquaponic system was supported by the breeding of Piaractus brachypomus "Paco", conditioned in aging tanks. The seedlings were stored until they were 16.33 cm high, they were transplanted both in the log bed (with an irrigation system from the fish culture tanks, with 15 minutes of irrigation and 45 minutes of rest), as in ridges on the ground, the corresponding agronomic management was performed, the Completely Random Design (DCA) was applied, with 2 treatments and 3 repetitions; It was determined that, the aquaponics cultivation of caigua, presented higher values ​​for number of immature fruits, fruit weight, number of fruits per hectare and yield per hectare; while the conventional system was better in term...

The research summarized and validated the individual selection of camu-camu (Myrciaria dubia (Kunth) McVaugh) plants. 43 progenies, previously selected in genetic tests and fields of producers of flood areas, were evaluated. Each progeny was installed in a row of 10 half-sister plants, with a space of 3x2 m. Using the SELEGEN (Reml / Blup) Model 63 program, four crops were analyzed, and individuals were selected for each of the 16 descriptors evaluated. For fruit yield, the Tipishca-Río Tigre population stood out, occupying 5 of the first 10 places. The individuals TT0725-4 (Tigre-Tipishca) turned out to be a natural recombinant for fruit yield / weight. And individual 64-8 turned out to be triple recombinant (yield / fruit weight / ascorbic acid). The descriptors with the highest genetic control with r ≥ 0.30 were: average fruit weight, brix degrees, plant height, number of basal bra...

The research summarized and validated the individual selection of camu-camu (Myrciaria dubia (Kunth) McVaugh) plants. 43 progenies, previously selected in genetic tests and fields of producers of flood areas, were evaluated. Each progeny was installed in a row of 10 half-sister plants, with a space of 3x2 m. Using the SELEGEN (Reml / Blup) Model 63 program, four crops were analyzed, and individuals were selected for each of the 16 descriptors evaluated. For fruit yield, the Tipishca-Río Tigre population stood out, occupying 5 of the first 10 places. The individuals TT0725-4 (Tigre-Tipishca) turned out to be a natural recombinant for fruit yield / weight. And individual 64-8 turned out to be triple recombinant (yield / fruit weight / ascorbic acid). The descriptors with the highest genetic control with r ≥ 0.30 were: average fruit weight, brix degrees, plant height, number of basal bra...