On Sandy, Boron-Poor Soils, Liming Induced Severe Boron Deficiency and Drastically Reduced the Dry Matter Yield of Young Olive Trees
Author:
Arrobas Margarida12, Raimundo Soraia12, Conceição Nuno12ORCID, Moutinho-Pereira José3ORCID, Correia Carlos Manuel3ORCID, Rodrigues Manuel Ângelo12ORCID
Affiliation:
1. Centro de Investigação de Montanha (CIMO), Instituto Politécnico de Bragança, Campus de Santa Apolónia, 5300-253 Bragança, Portugal 2. Laboratório para a Sustentabilidade e Tecnologia em Regiões de Montanha, Instituto Politécnico de Bragança, Campus de Santa Apolónia, 5300-253 Bragança, Portugal 3. Centre for the Research and Technology of Agro-Environmental and Biological Sciences (CITAB), University of Trás-os-Montes and Alto Douro, 5001-801 Vila Real, Portugal
Abstract
In the northeast of Portugal, like in many parts of the world, most soils are acidic, which may hamper crop productivity. This study presents the findings of a factorial experiment on olive (Olea europaea L.) involving three factors: (i) soil type [schist (Sch) and granite (Gra)]; (ii) cultivars [Cobrançosa (Cob) and Arbequina (Arb)]; and (iii) fertilizer treatments [liming (CaCO3) plus magnesium (Mg) (LMg), phosphorus (P) application (+P), boron (B) application (+B), all fertilizing materials combined (Con+), and an untreated control (Con-)]. Dry matter yield (DMY) did not show significant differences between cultivars, but plants grown in schist soil exhibited significantly higher biomass compared to those in granite soil. Among the treatments, +B and Con+ resulted in the highest DMY (50.8 and 47.2 g pot−1, respectively), followed by +P (34.3 g pot−1) and Con- (28.6 g pot−1). Treatment LMg yielded significantly lower values (15.6 g pot−1) than Con-. LMg raised the pH above 7 (7.36), leading to a severe B deficiency. Although Con+ also raised the pH above 7 (7.48), it ranked among the most productive treatments for providing B. Therefore, when applying lime to B-poor sandy soils, moderate rates are advised to avoid inducing a B deficiency. Additionally, it seems prudent to apply B after lime application.
Funder
PT2020 and EAFRD Foundation for Science and Technology FEDER
Subject
Plant Science,Ecology,Ecology, Evolution, Behavior and Systematics
Reference55 articles.
1. How do crop plants tolerate acid soils? Mechanisms of aluminum tolerance and phosphorous efficiency;Kochian;Annu. Rev. Plant Biol.,2004 2. Rengel, Z. (2003). Handbook of Soil Acidity, Marcel Dekker, Inc. 3. FAO, and ITPS (2015). Status of the World’s Soil Resources (SWSR)—Main Report, Food and Agriculture Organization of the United Nations and Intergovernmental Technical Panel on Soils. 4. Adams, F. (1984). Soil Acidity and Liming, American Society of Agronomy, Inc., Crop Science Society of America, Inc., Soil Science Society of America, Inc.. [2nd ed.]. 5. Weil, R.R., and Brady, N.C. (2017). Nature and Properties of Soils, Pearson. [15th ed.].
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