Abstract
Abstract Fertilization greatly affects coconut productivity; nevertheless, information on crop nutrition is relatively scarce for coconut in the state of Pará, Brazil. This study evaluated the effect of fertilization with nitrogen (N), phosphorus (P), potassium (K), and magnesium (Mg) on the nutritional status and coconut yield under the edaphoclimatic conditions of the municipality of Moju, Pará State (Brazil). The experiment was conducted for 10 years on a SOCOCO® Farm and used a randomized block design with three replications. Three levels of P, K, and Mg were used in presence and absence of N. Response to fertilization in the treatments was studied in terms of leaf concentration of macronutrients (N, P, K, Ca, Mg and S) and micronutrients (B and Cl). We also assessed the number of coconuts/plant/year, fresh albumen weight (FAW)/coconut and FAW/ha/year. The results were subjected to the analysis of variance (p<0.05) and the means compared by the Tukey test. In general, N fertilization did not influence concentration of macronutrients and micronutrients in leaves. In turn, P, K and Mg fertilization influenced nutrition of coconut palm. P and K fertilizations, isolated or in combination, increased the production of coconut/plant and FAW/ha. From the 6th year of plant age, 54 kg/ha/year of P2O5 and 96 kg/ha/year of K2O are indicated for the coconut culture in the region of the current study. N fertilization did not influence production parameters and Mg fertilization increased production in the presence of K fertilization.
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Claims 8
Claim · model-written summary
Nitrogen fertilization did not influence leaf macro and micronutrient concentrations.
- Taxon
- coconut palm
Cocos nuciferat0 - Treatment
- N fertilizatione0
- Outcome
- concentration of macronutrients and micronutrients in leavese0
- Direction
- did not influencee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“N fertilization did not influence concentration of macronutrients and micronutrients in leaves”
t0“coconut palm”
Claim · model-written summary
P, K and Mg fertilization influenced coconut palm nutrition.
- Taxon
- coconut palmCocos nuciferae0
- Treatment
- P, K and Mg fertilizatione0
- Outcome
- nutrition of coconut palme0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“P, K and Mg fertilization influenced nutrition of coconut palm”
Claim · model-written summary
P and K fertilization alone or together increased coconut production per plant.
- Taxon
- coconut palmCocos nuciferat0
- Treatment
- P and K fertilizationse0
- Outcome
- production of coconut/plante0
- Direction
- increasede0
- Qualifier
- isolated or in combinatione0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“coconut palm”
e0“P and K fertilizations, isolated or in combination, increased the production of coconut/plant and FAW/ha”
Claim · model-written summary
P and K fertilization alone or together increased FAW per hectare.
- Taxon
- coconut palmCocos nuciferat0
- Treatment
- P and K fertilizationse0
- Outcome
- FAW/hae0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“coconut palm”
e0“P and K fertilizations, isolated or in combination, increased the production of coconut/plant and FAW/ha”
Claim · model-written summary
From year six the authors indicate 54 kg/ha/year of P2O5 for regional coconut culture.
- Taxon
- coconut palmCocos nuciferat0
- Outcome
- 54 kg/ha/year of P2O5e0
- Qualifier
- From the 6th year of plant agee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“coconut palm”
e0“From the 6th year of plant age, 54 kg/ha/year of P2O5 and 96 kg/ha/year of K2O are indicated for the coconut culture in the region of the current study”
Claim · model-written summary
From year six the authors indicate 96 kg/ha/year of K2O for regional coconut culture.
- Taxon
- coconut palmCocos nuciferat0
- Outcome
- 96 kg/ha/year of K2Oe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“coconut palm”
e0“From the 6th year of plant age, 54 kg/ha/year of P2O5 and 96 kg/ha/year of K2O are indicated for the coconut culture in the region of the current study”
Claim · model-written summary
N fertilization did not influence production parameters.
- Taxon
- coconut palmCocos nuciferat0
- Treatment
- N fertilizatione0
- Outcome
- production parameterse0
- Direction
- did not influencee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“coconut palm”
e0“N fertilization did not influence production parameters”
Claim · model-written summary
Mg fertilization increased production when K fertilization was present.
- Taxon
- coconut palmCocos nuciferat0
- Treatment
- Mg fertilizatione0
- Outcome
- productione0
- Direction
- increasede0
- Qualifier
- in the presence of K fertilizatione0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“coconut palm”
e0“Mg fertilization increased production in the presence of K fertilization”
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