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2017
Mattos, Dirceu; Hippler, Franz W. R.; Boaretto, Rodrigo M.; Stuchi, Eduardo S.; Quaggio, José A.
Soil boron fertilization: The role of nutrient sources and rootstocks in citrus production Journal Article
In: Journal of Integrative Agriculture, vol. 16, iss. 7, pp. 1609-1616, 2017, ISSN: 2095-3119.
Abstract | Links | BibTeX | Tags: boric acid, Citrus, fertilization via soil, Fruit quality, leaf analysis, ulexite
@article{Mattos2017,
title = {Soil boron fertilization: The role of nutrient sources and rootstocks in citrus production},
author = {Dirceu Mattos and Franz W. R. Hippler and Rodrigo M. Boaretto and Eduardo S. Stuchi and José A. Quaggio},
doi = {10.1016/S2095-3119(16)61492-2},
issn = {2095-3119},
year = {2017},
date = {2017-01-01},
journal = {Journal of Integrative Agriculture},
volume = {16},
issue = {7},
pages = {1609-1616},
publisher = {Elsevier},
abstract = {Boron (B) is a key element for citrus production, especially in tropical regions, where the nutrient availability is commonly low in the soil. In addition, information about doses, fertilizer sources, methods of application, and particularly, differential nutrient demand of scion/rootstock combinations are required for efficient fertilization of commercial groves. In a non-irrigated sweet orange orchard (cv. Natal), grafted onto Rangpur lime, Swingle citrumelo or Sunki mandarin, we studied the application of two sources of B: boric acid (17% B, soluble in water) and ulexite (12% B, partially soluble in water) at four levels of supply (control without B, and soil application of 2, 4 and 6 kg ha−1 yr−1 of B). The experiment was carried out for three years (2004–2006). Boron availability in the soil and concentration in the leaves, as well as the fruit yield and quality of trees were evaluated. Soil B extracted with hot water and total leaf B positively correlated with doses of the nutrient applied to the trees. Levels of B in the soil and in the leaves did not vary with fertilizer sources. Fruit yield of trees grafted onto Rangpur lime and Swingle citrumelo was more responsive to B doses than those grafted onto Sunki mandarin. The maximum fruit yield of trees grafted onto Swingle was obtained with 3.2 kg ha−1 yr−1 of B, and leaf B level of 280 mg kg−1 that point out to a highest demand for B when this combination was compared with other rootstocks. Furthermore, fertilization with B did not affect the quality of fruits, but correlated with B and potassium (K) concentrations in the leaves. These results also support that the current recommendations for levels of B in leaves should be revisited.},
keywords = {boric acid, Citrus, fertilization via soil, Fruit quality, leaf analysis, ulexite},
pubstate = {published},
tppubtype = {article}
}
Boron (B) is a key element for citrus production, especially in tropical regions, where the nutrient availability is commonly low in the soil. In addition, information about doses, fertilizer sources, methods of application, and particularly, differential nutrient demand of scion/rootstock combinations are required for efficient fertilization of commercial groves. In a non-irrigated sweet orange orchard (cv. Natal), grafted onto Rangpur lime, Swingle citrumelo or Sunki mandarin, we studied the application of two sources of B: boric acid (17% B, soluble in water) and ulexite (12% B, partially soluble in water) at four levels of supply (control without B, and soil application of 2, 4 and 6 kg ha−1 yr−1 of B). The experiment was carried out for three years (2004–2006). Boron availability in the soil and concentration in the leaves, as well as the fruit yield and quality of trees were evaluated. Soil B extracted with hot water and total leaf B positively correlated with doses of the nutrient applied to the trees. Levels of B in the soil and in the leaves did not vary with fertilizer sources. Fruit yield of trees grafted onto Rangpur lime and Swingle citrumelo was more responsive to B doses than those grafted onto Sunki mandarin. The maximum fruit yield of trees grafted onto Swingle was obtained with 3.2 kg ha−1 yr−1 of B, and leaf B level of 280 mg kg−1 that point out to a highest demand for B when this combination was compared with other rootstocks. Furthermore, fertilization with B did not affect the quality of fruits, but correlated with B and potassium (K) concentrations in the leaves. These results also support that the current recommendations for levels of B in leaves should be revisited.