Examinando por Materia "Cinchona tree"

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Effect of synthetic fertilization dose on the diameter increase, height and mortality of Cinchona officinalis L. (Rubiaceae)
(Taylor and Francis Group, 2024-04-18) Fernandez Zarate, Franklin Hitler; Huaccha Castillo, Annick Estefany; Quiñones Huatangari, Lenin; Vaca Marquina, Segundo Primitivo; Goñas Goñas, Malluri; Milla Pino, Manuel Emilio; Seminario Cunya, Alejandro
Cinchona officinalis, is a South American tree species, commonly used for medicine, and is currently threatened by agricultural expansion and cattle ranching. The objective was to determine the effect of chemical fertilization on the nursery growth to increase growth potential and survival of C. officinalis. A completely randomized design with six treatments and three replicates was used; 20 C. officinalis plants were used per replicate. Two months after transplanting the C. officinalis seedlings to the polyethylene bags, inorganic fertilizer (YaraMila® HYDRAN) was applied. Monthly evaluations were carried out and the number of dead plants, plant height, diameter and number of leaves were recorded. The highest mortality rate was recorded when fertilizer was applied (73%) while in the non-fertilized treatment mortality reached 36%. Regarding the increase in height, diameter and number of leaves in all cases, the best results were obtained in the fertilized treatments, exceeding by 85, 70 and 17% (respectively) those obtained in the treatment to which fertilization was not applied. This study shows the effects that the application of fertilizers to C. officinalis plants at the nursery level can have on growth and mortality variables, the results suggest the use of this product for a sustainable and large-scale production of this species taking into consideration the appropriate dosage.
Impact of light conditions on the early development of Cinchona officinalis
(Universidad Nacional de Colombia, 2024-01-01) Vaca Marquina, Segundo Primitivo; Arteaga Cuba, Marcela Nancy; Tafur Santillan, Segundo Medardo; Huaccha Castillo, Annick Estefany; Fernandez Zarate, Franklin Hitler
Cinchona officinalis, a native plant species known in Peru as the cinchona tree, has civic importance because it represents the plant wealth of this nation and medicinal importance since it was for more than 300 years the only cure for malaria, and is currently threatened. The aim was to determine the effect of light conditions on the percentage of mortality, height increase, and diameter increase of Cinchona officinalis. In the community of La Cascarilla (5°39’48.87 “S 78°54’35.24 “W), two treatments were installed, forest massif (FM) and enrichment bands (EB). For each treatment, three replicates and 16 plants per replicate were used. Monthly evaluations were carried out in which the number of dead plants, plant height, and diameter were recorded. These parameters were correlated with precipitation, temperature, and photoperiod records of the study area. The results showed that mortality in FM was 27.1% higher than that reported in EB, while the increase in height and diameter increment in the FM plot was 45.5 and 25.1% higher than that obtained in EB. In addition, a negative correlation was observed between the percentage of mortality and precipitation (rs=- 0.54), and between the increase in height and diameter increment with the maximum temperature (rs=-0.73 and rs=-0.60, respectively) for the FM treatment, while for the EB treatment, there was a negative correlation between the increase in height and precipitation (rs=-0.55) and a positive correlation between the diameter increment and the minimum temperature (rs=0.53). In general, shaded conditions allow a higher survival rate at the cost of reducing height and diameter increment.