| Autor: |
Cassino, María Natalia, Giletto, Claudia Marcela, Zamuner, Ester Cristina, Sainz Rozas, Hernán René, Barbieri, Pablo Andrés, Reussi Calvo, Nahuel |
| Předmět: |
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| Zdroj: |
Communications in Soil Science & Plant Analysis; Mar2024, Vol. 55 Issue 6, p828-845, 18p |
| Abstrakt: |
Nitrogen (N) availability affects the boron (B) and chloride (Cl) concentrations in potato plants. The objective of our study was to evaluate: 1) the effect of nitrogen (N) fertilization on boron (B) and chloride (Cl) concentration in leaves and tubers, yield and tuber quality; and 2) the use of nitrogen nutrition index in shoot biomass (NNIsh) and in the tuber at harvest (NNItH) to estimate B and Cl nutrition status. Two trials were carried out (2009/10 and 2010/11). At each year, a split-plot randomized complete blotuber B uptakeck design with three replications was used. The main plot was the N rate applied at planting (0 or 50 kg N ha−1), and the subplots were the N rate applied at tuber initiation (0, 50 or 100 kg N ha−1). Our results showed that leaf B concentration and yield increased with N availability (13% and 5%, respectively). While leaf and tuber Cl concentration and DM decreased with N availability (16%, 18% and 3%, respectively). Moreover, the NNIsh was related to the leaf B and Cl concentration and relative yield. The NNItH was also closely related to dry matter (DM), B and Cl concentrations in tubers at harvest. This study demonstrated that N fertilization affected the concentration of B and Cl in leaf and tuber and that NNIsh and NNItH estimated the nutritional status of anionic micronutrients. Therefore, simultaneous N, B and Cl management is critical for increasing their use efficiencies and improving crop productivity. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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