Sensitivity to water deficit of the second stage of fruit growth in late mandarin trees
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AuthorBerríos Reyes, Pablo Alejandro; Temnani Rajjaf, Abdelmalek; Zapata, Susana; Forcén Muñoz, Manuel; Franco Leemhuis, José Antonio; [et al.]
Knowledge AreaProducción Vegetal
SponsorsThis study was supported by the European Commission H2020 (Grant 728003, DIVERFARMING Project) and National Research Agency of Spain (PID2019-106226RB-C22).
Realizado en/conUniversidad Politécnica de Cartagena
Bibliographic CitationBerríos, P., Temnani, A., Zapata, S. et al. Sensitivity to water deficit of the second stage of fruit growth in late mandarin trees. Irrig Sci 41, 35–47 (2023). https://doi.org/10.1007/s00271-022-00796-w
In citrus fruits, phases I and II of fruit growth are sensitive to water deficit, and for this reason, deficit irrigation (DI) has been usually restricted to the final ripening phase. However, the optimal timing and intensity of stress during sensitive phases have not been clearly defined. The main objective was to determine the sensitivity of the second stage of fruit growth to water deficit in adult mandarin trees, and to explore the suitability of different soil and plant water status indicators, including the leaf-scale spectrum, according to the water stress level. Four irrigation treatments were tested: a control (CTL) irrigated at ~ 80% of ETc during the entire crop cycle, and three irrigation suppression treatments, in which no water was applied during the end of phase I and the beginning of phase II (DI1), the second half of phase II (DI2), and phase III of fruit growth (DI3), respectively. Phase II of fruit growth can be considered as a non-critical phenological period until ...
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