Impact of Elevated CO<sub>2</sub> and Temperature on Growth, Development and Nutrient Uptake of Tomato
Elevated carbon dioxide (EC) can increase the growth and development of different C<sub>3</sub> fruit crops, which may further increase the nutrient demand by the accumulated biomass. In this context, the current investigation was conceptualized to evaluate the growth performance and nut...
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| Autores principales: | , , , , , , , , |
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| Formato: | article |
| Lenguaje: | EN |
| Publicado: |
MDPI AG
2021
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| Materias: | |
| Acceso en línea: | https://doaj.org/article/3d8e8c7706354c13ac901f7851c7f4b9 |
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| Sumario: | Elevated carbon dioxide (EC) can increase the growth and development of different C<sub>3</sub> fruit crops, which may further increase the nutrient demand by the accumulated biomass. In this context, the current investigation was conceptualized to evaluate the growth performance and nutrient uptake by tomato plants under elevated CO<sub>2</sub> (EC<sub>700</sub> and EC<sub>550</sub> ppm) and temperature (+2 °C) in comparison to ambient conditions. Significant improvement in the growth indicating parameters like leaf area, leaf area index, leaf area duration and crop growth rate were measured at EC<sub>700</sub> and EC<sub>550</sub> at different stages of crop growth. Further, broader and thicker leaves of plants under EC<sub>700</sub> and EC<sub>550</sub> have intercepted higher radiation by almost 11% more than open field plants. Conversely, elevated temperature (+2 °C) had negative influence on crop growth and intercepted almost 7% lower radiation over plants under ambient conditions. Interestingly, earliness of phenophases viz., branch initiation (3.0 days), flower initiation (4.14 days), fruit initiation (4.07 days) and fruit maturation (7.60 days) were observed at EC<sub>700</sub> + 2 °C, but it was statistically on par with EC<sub>700</sub> and EC<sub>550</sub> + 2 °C. Irrespective of the plant parts and growth stages, plants under EC<sub>700</sub> and EC<sub>550</sub> have showed significantly higher nutrient uptake due to higher root biomass. At EC<sub>700</sub>, the tune of increase in total nitrogen, phosphorus and potassium uptake was almost 134%, 126% and 135%, respectively compared to open field crop. This indicates higher nutrient demand by the crop under elevated CO<sub>2</sub> levels because of higher dry matter accumulation and radiation interception. Thus, nutrient application is needed to be monitored at different growth stages as per the crop needs. |
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