Sugar apple (Annona squamosa L.) is one of the most widely grown member of the Annonaceae family in several regions, but there is still a lack of agronomic data regarding the management of its initial growth stages under Cerrado conditions. The aim of the present study was to evaluate the production of Annona squamosa L. seedlings under different environmental conditions achieved by using shade nets (E1: ChromatiNet® Silver 50%; E2: ChromatiNet® red 50%; E3: ChromatiNet® red 35%; E4: ChromatiNet® Silver 35%) in combination with four different substrates (S1: soil + sand + chicken manure; S2: soil + sand + cattle manure; S3: soil + sand + cattle manure + chicken manure; S4: soil + sand + sheep manure). An experiment was set up using a completely randomized design with treatments in a split-plot arrangement, with four replicates and ten plants per experimental unit. Seedling growth par...

This work was to evaluate the influence of the organic compound in the production of plants capirona. The experiment was conducted at the Research Center Dale E. Bandy the IIAP Ucayali. Treatments were distributed in a randomized complete (DCA) design with 5 treatments 3 replications and 10 plants per experimental unit, the treatments were: T1 [alluvial soil]; T2 [agricultural soil]; T3 [alluvial soil + agricultural soil (1: 1)]; T4 [alluvial soil + rice hull + chicken manure (1: 1: 1)] and T5 [agricultural soil + rice hull + chicken manure (1: 1: 1]. The variables evaluated at the end of the experiment were plant height (H) (cm), basal diameter (BD) (mm), number of leaves, relative height and basal diameter (H/BD), dry mass of the aerial part (DMAP) (g) dry weight of the root (DWR) (g) and quality index Dickson (QID). The results show that the T4 and T5 treatments, had higher significan...

The objective of this study was to evaluate the effect of different doses of nitrogen (N), applied via fertirrigation, on the initial growth components of the camu-camu plants. It was conducted with the use of a randomized block experimental design with 5 treatments: 0; 40; 80; 120 and 160 kg ha-1 of N, eight replicates and seven plants per experimental parcel. The experiment lasted for a period of 270 days. The diameter of stem (mm) and the height of the plant (cm) were evaluated every 30 days and the number of branches and total length of branches (cm) were evaluated every 90 days. At the end of the experiment, chlorophyll a index, dry mass of the leaves (g), dry mass of the branches (g), dry mass of the roots (g), total dry mass (g), and the Dickson Quality Index (DQI) were evaluated. According to the results, camu-camu plants that did not receive nitrogen fertilization had a lower in...

Este trabajo tuvo como objetivo evaluar la influencia del compuesto orgánico en la producción de plantas de capirona. El experimento fue realizado en el Centro de Investigaciones Dale E. Bandy del IIAP Ucayali. Los tratamientos fueron distribuidos mediante un Diseño Completos al Azar (DCA), con 5 tratamientos 3 repeticiones y 10 plantas por unidad experimental, los tratamientos fueron: T1 [Tierra aluvial]; T2 [tierra agrícola]; T3 [Tierra aluvial + tierra agrícola (1:1)]; T4 [Tierra aluvial + cascarilla de arroz + gallinaza (1:1:1)] y T5 [Tierra Agrícola+ cascarilla de arroz + gallinaza (1:1:1]. Las variables evaluadas al final del experimento fueron altura de planta (H) (cm); diámetro basal (DB) (mm); número de hojas; relación altura y diámetro basal (H∕DB); masa seca de la parte aérea (MSPA) (g); masa seca de la raíz (MSR) (g) e índice de calidad de Dickson (IQD). Los re...

A irrigação consome grande quantidade de água, sendo importante um adequado manejo da cultura para minimizar esse consumo, maximizando a produção. No intuito de obter informações para o manejo da irrigação, objetivou-se com o presente trabalho determinar a evapotranspiração da cultura (ETc), o coeficiente de cultivo (Kc) e a eficiência do uso de agua (EUAg) da cultura de milho, em solo com e sem cobertura, durante os diferentes estádios de desenvolvimento, utilizando lisímetros de drenagem. O experimento foi conduzido no campus Cauamé da Universidade Federal de Roraima, entre 19/04/2014 e 07/08/2014, em Boa Vista, RR. A evapotranspiração de referência (ETo) foi estimada pelo método de Penman-Monteith FAO. Os resultados da ETc do milho, durante o ciclo da cultura, em solo sem e com cobertura foram de 421,5 e 351,0 mm, respectivamente. As médias diárias de ETc foram de...

This work was to evaluate the influence of the organic compound in the production of plants capirona. The experiment was conducted at the Research Center Dale E. Bandy the IIAP Ucayali. Treatments were distributed in a randomized complete (DCA) design with 5 treatments 3 replications and 10 plants per experimental unit, the treatments were: T1 [alluvial soil]; T2 [agricultural soil]; T3 [alluvial soil + agricultural soil (1: 1)]; T4 [alluvial soil + rice hull + chicken manure (1: 1: 1)] and T5 [agricultural soil + rice hull + chicken manure (1: 1: 1]. The variables evaluated at the end of the experiment were plant height (H) (cm), basal diameter (BD) (mm), number of leaves, relative height and basal diameter (H/BD), dry mass of the aerial part (DMAP) (g) dry weight of the root (DWR) (g) and quality index Dickson (QID). The results show that the T4 and T5 treatments, had higher significan...

The objective of this study was to evaluate the effect of different doses of nitrogen (N), applied via fertirrigation, on the initial growth components of the camu-camu plants. It was conducted with the use of a randomized block experimental design with 5 treatments: 0; 40; 80; 120 and 160 kg ha-1 of N, eight replicates and seven plants per experimental parcel. The experiment lasted for a period of 270 days. The diameter of stem (mm) and the height of the plant (cm) were evaluated every 30 days and the number of branches and total length of branches (cm) were evaluated every 90 days. At the end of the experiment, chlorophyll a index, dry mass of the leaves (g), dry mass of the branches (g), dry mass of the roots (g), total dry mass (g), and the Dickson Quality Index (DQI) were evaluated. According to the results, camu-camu plants that did not receive nitrogen fertilization had a lower in...

Camu-camu is a native plant of the Peruvian Amazon. It is noted for its high concentration of ascorbic acid, however this feature varies widely from one location to another due to genetic and environmental factors. In order to determine the relationship between mineral nutrients and the concentration of ascorbic acid in camu-camu plants, a study was conducted in three camu-camu producing areas in flood-prone soils and soils on dry land conditions in the Ucayali Region. For this purpose, soil samples and camu-camu were collected. The content of following macronutrients was analyzed: nitrogen, phosphorus, potassium, calcium and magnesium; also was determined the concentration of aluminum, pH, organic matter and ascorbic acid. The results show that the camu-camu plantations located in upland soils had lower concentrations of ascorbic acid and lower natural fertility, than soils prone to flo...

Camu-camu is a native plant of the Peruvian Amazon. It is noted for its high concentration of ascorbic acid, however this feature varies widely from one location to another due to genetic and environmental factors. In order to determine the relationship between mineral nutrients and the concentration of ascorbic acid in camu- camu plants, a study was conducted in three camu-camu producing areas in flood-prone soils and soils on dry land conditions in the Ucayali Region. For this purpose, soil samples and camu-camu were collected. The content of following macronutrients was analyzed: nitrogen, phosphorus, potassium, calcium and magnesium; also was determined the concentration of aluminum, pH, organic matter and ascorbic acid. The results show that the camu-camu plantations located in upland soils had lower concentrations of ascorbic acid and lower natural fertility, than soils prone to fl...

Camu-camu is a native plant of the Peruvian Amazon. It is noted for its high concentration of ascorbic acid, however this feature varies widely from one location to another due to genetic and environmental factors. In order to determine the relationship between mineral nutrients and the concentration of ascorbic acid in camu-camu plants, a study was conducted in three camu-camu producing areas in flood-prone soils and soils on dry land conditions in the Ucayali Region. For this purpose, soil samples and camu-camu were collected. The content of following macronutrients was analyzed: nitrogen, phosphorus, potassium, calcium and magnesium; also was determined the concentration of aluminum, pH, organic matter and ascorbic acid. The results show that the camu-camu plantations located in upland soils had lower concentrations of ascorbic acid and lower natural fertility, than soils prone to flo...

Camu-camu is a native fruit tree of the Amazon, is highly value nutritious and great economic potential due to the high content of ascorbic acid (6112 mg/100 g) present in fruits. Camu-camu, like any other plant, when it becomes cultivated outside their natural environment, loses its ecological balance and, consequently, is attacked by phytophagous and severe insect pests, which cause serious damage to the orchard. In this sense, the aim with this study, reporting the identification and control of insect pests in the cultivation of camu-camu, using different methods to attract and capture. It was observed that the best results were obtained in applying Neenmax®, followed by traps shading of black color screen, furthermore, higher occurrence of insects were recorded belonging to the family Chrysomelidae.

Camu-camu is a native fruit tree of the Amazon, is highly value nutritious and great economic potential due to the high content of ascorbic acid (6112 mg/100 g) present in fruits. Camu-camu, like any other plant, when it becomes cultivated outside their natural environment, loses its ecological balance and, consequently, is attacked by phytophagous and severe insect pests, which cause serious damage to the orchard. In this sense, the aim with this study, reporting the identification and control of insect pests in the cultivation of camu-camu, using different methods to attract and capture. It was observed that the best results were obtained in applying Neenmax®, followed by traps shading of black color screen, furthermore, higher occurrence of insects were recorded belonging to the family Chrysomelidae.