Melón (Cucumis melo L.) Honey Dew cultivado bajo invernadero: correlación entre densidad de siembra y variables de rendimiento
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Díaz Alvarado, Jorge Manuel
Monge Pérez, José Eladio
Loría Coto, Michelle
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Abstract
Se establecieron correlaciones de Pearson en melón Honey Dew producido bajo invernadero,
manejado con tres tipos de poda (1 tallo; 2 tallos; sin poda), entre la densidad de siembra y
las siguientes variables: edad al inicio de la cosecha, peso del fruto, número de frutos por
planta y por metro cuadrado, rendimiento por planta y por área, firmeza de la pulpa del fruto, y
porcentaje de sólidos solubles totales. El cultivo se manejó con fertirrigación, en sustrato de fibra
de coco. Para los tres tipos de poda, las correlaciones de Pearson que tuvieron significancia
estadística (p ≤ 0,05), en cuyos casos se obtuvo la regresión lineal, fueron entre la densidad
de siembra y: número total de frutos por planta (r = –0,65**); número de frutos comerciales por
planta (r = –0,65**); rendimiento total por planta (r = –0,69**); y rendimiento comercial por planta
(r = –0,69**). Para los tratamientos con poda a 2 tallos, se obtuvo una correlación significativa
entre la densidad de siembra y el porcentaje de sólidos solubles totales (r = –0,64*). Para el
tratamiento sin poda, se obtuvo una correlación significativa entre la densidad de siembra y la
edad al inicio de la cosecha (r = 0,98**). Se concluye que, en melón Honey Dew manejado con
cualquiera de los tipos de poda evaluados, el uso de una mayor densidad de siembra provoca
una disminución en el número de frutos (totales y comerciales) por planta, y en el rendimiento
total y comercial por planta.
For Honey Dew melon grown under greenhouse conditions and managed with three pruning systems (1-stem; 2-stem; no pruning), the researchers estimated Pearson correlations among plant density and the following variables: days to start of harvest, fruit weight, number of fruits per plant and per square meter, yield per plant and per area, fruit flesh firmness and percentage of total soluble solids. The crop was planted on coconut fiber as substrate, and managed with fertigation. For all three pruning systems, the Pearson correlations that were statistically significant (p ≤ 0,05), were obtained between plant density and: total number of fruits per plant (r = –0,65**); number of commercial fruits per plant (r = –0,65**); total yield per plant (r = –0,69**); and commercial yield per plant (r = –0,69**); in those cases the linear regression was calculated. For 2-stem pruning treatments, a significant correlation was obtained between plant density and percentage of total soluble solids (r = –0,64*). For no pruning treatment, a significant correlation was obtained between plant density and days to start of harvest (r = 0,98**). It is concluded that in Honey Dew melon managed with any of the evaluated pruning systems, the use of a higher plant density lead to a decrease in the number of fruits (total and commercial) per plant, and in the total and commercial yield per plant.
For Honey Dew melon grown under greenhouse conditions and managed with three pruning systems (1-stem; 2-stem; no pruning), the researchers estimated Pearson correlations among plant density and the following variables: days to start of harvest, fruit weight, number of fruits per plant and per square meter, yield per plant and per area, fruit flesh firmness and percentage of total soluble solids. The crop was planted on coconut fiber as substrate, and managed with fertigation. For all three pruning systems, the Pearson correlations that were statistically significant (p ≤ 0,05), were obtained between plant density and: total number of fruits per plant (r = –0,65**); number of commercial fruits per plant (r = –0,65**); total yield per plant (r = –0,69**); and commercial yield per plant (r = –0,69**); in those cases the linear regression was calculated. For 2-stem pruning treatments, a significant correlation was obtained between plant density and percentage of total soluble solids (r = –0,64*). For no pruning treatment, a significant correlation was obtained between plant density and days to start of harvest (r = 0,98**). It is concluded that in Honey Dew melon managed with any of the evaluated pruning systems, the use of a higher plant density lead to a decrease in the number of fruits (total and commercial) per plant, and in the total and commercial yield per plant.
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Keywords
Cucumis melo, Número de frutos por planta, Rendimiento, Correlación de Pearson, Regresión lineal, Sólidos solubles totales, Number of fruits per plant, Yield, Pearson correlation, Linear regression, Total soluble solids
Citation
https://revistas.tec.ac.cr/index.php/tec_marcha/article/view/5033