The effect of defoliation and gibberellic acid (GA3) on the fall of the fruit in the induced period of harvest of Myrciaria dubia (camu-camu), in a flooded area on the banks of the Amazon River, Iquitos-Peru, was evaluated. The soil is clayey-silty with 2.15% organic matter, pH 6.29, 0.10% Nitrogen, 40.76 ppm Phosphorus and 228 ppm potassium. The average temperature is 27.45 ° C, relative humidity of 86% and 3111.4 mm of rain. The defoliation was carried out with NaCl solution in water (50 g.L-1). GA3, was applied every 15 days at doses of 0, 50, 100 and 150 mg.L.-1. The variables were evaluated: number of flowers per branch (FLR1-4), number of flowers per plant (FLP1-4),% of fruits retained in phase 3 (FR3),% of fruits retained in phase 5 (FR5), weight of fruits (PF), number of harvested fruits (FC), approximate yield of fruits (RAF), and the real fruit yield (RRF). The design was completely randomized (DCA), in 2x4 factorial arrangement. Defoliation significantly reduced FLP1-4 from 6938 to 3701, while GA3 did not influence that character. Defoliation significantly increased the FR3 retention, but reduced the PF and FC. GA3 significantly influenced FLR1-4, FR3 and PF. In FR5, no statistical difference was recorded for either D or GA3, nor was there significant interaction between the two defoliation and GA3 factors. For FC, RAF and RRF, highly significant differences were found for Defoliation, with superiority of non-defoliated plants but no differences were found for GA3 doses. It is concluded that in F3 the defoliation favored significantly, effect that was diluted in F5, while the application of GA3 negatively influenced this retention. Fruit yield was significantly higher in non-defoliated plants without showing significant difference between GA3 doses.
Para incrementar la calidad y el rendimiento de las cosechas en las parcelas de los pequeños productores, es necesario buscar alternativas de fertilización orgánica de bajo costo y de fácil aplicación. En ese sentido, el objetivo de este estudio fue determinar el efecto de biofertilizantes en las características agronómicas y rendimiento de fruto camu-camu. El experimento fue conducido mediante un diseño de bloques completamente al azar (DBCA) con cinco tratamientos, seis bloques y una planta por unidad experimental. Los biofertilizantes fueron: T1) Testigo sin biofertilizante, T2) Pollinaza, T3) Bovinaza, T4) Guano de Isla, T5) Gallinaza. Después de 210 días, fue verificado que las plantas tratadas con el biofertilizante bovinaza presentaron los mejores resultados en longitud, diámetro, peso y rendimiento de fruto con 24, 96 mm; 27,28 mm y 11,35 g y 14,15 kg.pl-1 , respectivamente. De esta manera, se concluye que los biofertilizantes elaborados a partir de estiércol de ganado bovino y de aves de corral mejoraron significativamente el rendimiento, tamaño y peso de fruto en plantas de camu-camu. Palabras clave: Myrciaria dubia; fertilización orgánica; nutrientes minerales; manejo agronómico; restinga.
In order to select camu-camu superior genotypes, a comparative of clones from natural populations, farmer plantations and an experimental field of the National Institute of Agrarian Innovation (INIA), was established in 2004 in varzea, at the Peruvian Amazon Research Institute (IIAP). Nine harvests between 2006 and 2016 have been evaluated, including variables in vegetative and reproductive development states. Statistical analysis was performed using the SPSS program for analysis of variance and SELEGEN REML/BLUP for repetitivity analysis of "fruit yield" (FY) and "fruit weight" (FW) with 5 and 4 measurements (years) respectively. For FY, a repetitivity index r = 0.117±0.07 was obtained with a selective precision of 0.63 and efficiency of 1.84 where clones 69, 48, 58, 50, 61, 13, 18, 29, 49 and 32, were selected in descending order of merit. For FW, r = 0.690±0.294 was obtained with selective precision of 0.948, efficiency of 1.14 and selection of clones 44, 13, 26, 23, 69, 64 22, 52, 27 and 8. As for the content in ascorbic acid, clones 48, 32 and 35 occupied the first places with more than 2000 mg of ascorbic acid/100 g. The selections achieved strengthened the pre-improvement work by conferring vigour y fiavility of a long term research.
RESUMENEl camu camu es una planta arbustiva que destaca por su alto contenido de Vitamina C. A pesar de los avances tecnológicos en el manejo del cultivo, aún hay insuficiente información sobre el manejo nutricional de las plantas en producción. El objetivo de este trabajo fue determinar el efecto del boro en la producción del fruto de camu camu en suelos aluviales de Ucayali. Utilizamos un diseño de bloques completos al azar (DBCA) con 3 bloques y 8 plantas por unidad experimental. Los tratamientos fueron: T1-Testigo; T2-Fertibagra 15L; T3-Ulexita 40 y T4-Fertibagra 21. Evaluamos la concentración de boro en las plantas antes y después de su aplicación y la producción de frutos en kg/planta. Con relación al análisis de la concentración de boro en la planta, se observó que hay mayor concentración de este micronutriente, en la parte aérea, obteniendo valores máximos en las hojas y tallos. La producción de fruta en kg/planta fue mayor para los tratamientos que incluían fuentes de boro en comparación con el tratamiento de control sin boro. Estos resultados demuestran que las aplicaciones de boro vía suelo y foliar aumentan la concentración de este micronutriente en las diferentes partes de la planta de camu camu, haciendo que las plantas respondan positivamente a la producción de frutos. PALABRAS CLAVE:Myrciaria dubia, vitamina C, fertibagra, ulexita, nutrición mineral. SOURCES OF BORON IN THE PRODUCTION OF THE FRUIT OF CAMU CAMU IN ALLUVIAL SOILS OF UCAYALI ABSTRACTCamu camu is a shrubby plant that stands out for his high content of Vitamin C. Despite of the technological advances in crop management, there is still insufficient information on nutritional management of plants in production. The aim of this study was to determine the effect of boron in the production of the fruit of camu camu in the alluvial soils of Ucayali. We used a completely randomized design of blocks with 3 blocks and 8 plants per experimental unit. The treatments were: T1-Control; T2-Fertibagra 15L; T3-Ulexita 40; and T4-Fertibagra 21. We evaluated the concentration of boron in plants before and after application, and the production of fruits in kg/plant. Regarding the analysis of the contration of boron in the plant,it was observed that there is a greater concentration of this micronutrient in the aerial part, with the highest values reported in the leaves and stems. Fruit production in kg / plant was higher for treatments that included boron sources compared to the control without boron. These results show that boron applications via soil and foliar increase the concentration of this micronutrient in different parts of the plant of camu camu, making the plants respond positively to fruit production. KEYWORDS:Myrciaria dubia, vitamin C, fertibagra, ulexita, mineral nutrition, IIAP. FOLIA Amazónica INTRODUCCIÓNEl camu camu es una planta arbustiva de la familia Myrtaceae que destaca por su alto contenido de Vitamina C, se desarrolla en suelos inundables y se adapta bien a los suelos de altura de la Amazonía peruana. Debido a las condiciones p...
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.
hi@scite.ai
10624 S. Eastern Ave., Ste. A-614
Henderson, NV 89052, USA
Copyright © 2024 scite LLC. All rights reserved.
Made with 💙 for researchers
Part of the Research Solutions Family.