Abstract
Abstract Boron (B) is known to play important roles in the structures of cell walls and membranes and in the integrity and functions of membranes in plants. Under the conditions in the central Amazon region, there are few studies about this nutrient. In Brazilian soils, the hot-water B extraction method has been extensively used for evaluation of soil B status. However, difficulties with this method result in poor accuracy and precision of extraction of available B in soil. The objective of this study was to evaluate the yield, foliar concentration, and efficiency of B extracting solutions and the effect of B fertilization on B uptake in banana (Musa spp.) leaves and fruits, subgroup Cavendish (AAA), cultivated in a Xanthic Ferralsol (dystrophic Yellow Latosol) located in Amazonas State, Brazil. The experimental design was a completely randomized split plot, with four B rates (0, 4, 8, and 12 kg ha−1), two harvest cycles (subtreatments), and four replicates. Available B was determined with seven extractant solutions: Mehlich 1, Mehlich 3, hot water, hydrochloric acid (HCl) 0.05 mol L−1, HCl 0.1 mol L−1, HCl 5.0 mol L−1, and potassium chloride (KCl 1.0 mol L−1). The application of B fertilizer increased the yield and B concentration in leaves and fruits. Hot water and KCl 1.0 mol L−1 were the most efficient extracting solutions for the determination of available B in soil. The application of 3.4 kg B ha−1 in the first cycle and 1.3 kg B ha−1 in the second cycle guarantees an adequate nutritional status in banana plants. Keywords: Macronutrientsmethods of soil B analysismicronutrients Musa spp.nutritional diagnosis Acknowledgments We thank the Western Amazon Center of Embrapa (CPAA, Manaus, Amazonas State) and Marcia Pereira de Almeida for logistic support and laboratory analyses, respectively.
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Claims 7
Claim · model-written summary
Boron fertilizer increased banana yield.
Not reportedComparator
Verbatim
e0“The application of B fertilizer increased the yield and B concentration in leaves and fruits.”
t0“Banana”
Claim · model-written summary
Boron fertilizer increased leaf boron concentration.
- Taxon
- Bananat0
- Organ / stage
- leavese0
- Treatment
- B fertilizere0
- Outcome
- B concentration in leavese0
- Direction
- increasede0
Not reportedComparator
Verbatim
e0“The application of B fertilizer increased the yield and B concentration in leaves and fruits.”
t0“Banana”
Claim · model-written summary
Boron fertilizer increased fruit boron concentration.
- Taxon
- Bananat0
- Organ / stage
- fruitse0
- Treatment
- B fertilizere0
- Outcome
- B concentration in leaves and fruitse0
- Direction
- increasede0
Not reportedComparator
Verbatim
e0“The application of B fertilizer increased the yield and B concentration in leaves and fruits.”
t0“Banana”
Claim · model-written summary
Hot water was among the most efficient extractants for available soil boron.
- Taxon
- Bananat0
- Treatment
- Hot watere0
- Outcome
- most efficient extracting solutions for the determination of available B in soile0
Not reportedComparator
Verbatim
e0“Hot water and KCl 1.0 mol L−1 were the most efficient extracting solutions for the determination of available B in soil.”
t0“Banana”
Claim · model-written summary
KCl 1.0 mol L−1 was among the most efficient extractants for available soil boron.
- Taxon
- Bananat0
- Treatment
- KCl 1.0 mol L−1e0
- Outcome
- most efficient extracting solutions for the determination of available B in soile0
Not reportedComparator
Verbatim
e0“Hot water and KCl 1.0 mol L−1 were the most efficient extracting solutions for the determination of available B in soil.”
t0“Banana”
Claim · model-written summary
The authors recommend 3.4 kg B ha−1 for adequate banana nutrition in the first cycle.
Verbatim
e0“The application of 3.4 kg B ha−1 in the first cycle and 1.3 kg B ha−1 in the second cycle guarantees an adequate nutritional status in banana plants.”
Claim · model-written summary
The authors recommend 1.3 kg B ha−1 for adequate banana nutrition in the second cycle.
Verbatim
e0“The application of 3.4 kg B ha−1 in the first cycle and 1.3 kg B ha−1 in the second cycle guarantees an adequate nutritional status in banana plants.”
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