| Journal: | Scientia Agricola |
| Database: | PERIÓDICA |
| System number: | 000455506 |
| ISSN: | 0103-9016 |
| Authors: | Bonomelli, Claudia1 Alcalde, Carolina1 Aguilera, Camila1 Videla, Ximena2 Rojas Silva, Ximena2 Nario, Adriana2 Fernandez, Victoria3 |
| Institutions: | 1Pontificia Universidad Católica de Chile, Facultad de Agronomía e Ingeniería Forestal, Macul, Santiago de Chile. Chile 2Comisión Chilena de Energía Nuclear, División Investigación y Desarrollo, Las Condes, Santiago. Chile 3Universidad Politécnica de Madrid, Madrid. España |
| Year: | 2021 |
| Volumen: | 78 |
| Number: | 6 |
| Country: | Brasil |
| Language: | Inglés |
| Document type: | Artículo |
| Approach: | Experimental, analítico |
| English abstract | Calcium (Ca) is often supplied to crop species to prevent the occurrence of Ca–related disorders. Mechanisms of Ca absorption and transport are not fully understood and the effectiveness of root and/or foliar Ca fertilization may be variable. To characterize the rate of Ca absorption and transport, trials were developed with chili pepper and sweet cherry plants, using 45CaCl2 as a tracer. The Ca treatments supplied were: (1) No 45Ca (control); (2) 45Ca soil application; (3) 45Ca supply to basal leaves, and (4) 45Ca application to apical leaves. After two months, plants were harvested for biomass and Ca content determination. The recovery of 45Ca in different plant parts was measured with a liquid scintillation counter and leaf traits were observed by scanning electronic microscopy. In general, the highest 45Ca concentrations were recovered in treated organs, while root applications led to highest 45Ca translocation rates, which varied between chili pepper and cherry plants. For chili pepper, 45Ca applied to the soil was detected mainly in roots (44 %) followed by leaves (36.6 %) stems (17.4 %) and fruits (2 %). In sweet cherry trees, soil–applied 45Ca was principally recovered in roots (45.3 %), shoots (28.5 %), leaves (14.3 %) and trunks (11.9 %). The results provide evidence of increased absorption of root–applied Ca, as well as different degrees of Ca mobility between species. Foliar application led to major Ca increases in treated leaves, with Ca transported to other plant organs after apical leaf Ca supply chiefly in cherry trees |
| Disciplines: | Agrociencias, Biología |
| Keyword: | Fisiología vegetal, Plantas para uso industrial, Frutales, Fertilización, Nutrición vegetal, Calcio, Capsicum annuum, Chile, Prunus avium, Cereza |
| Keyword: | Plant physiology, Plants for industrial use, Fruit trees, Fertilization, Plant nutrition, Calcium, Capsicum annuum, Chili, Prunus avium, Cherry |
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