Abstract
The banana (Musa sp.) crop is notable for its social and economic importance in tropical and subtropical regions of world. In Brazil, despite being a main banana producer, its production is considered low, mainly due to water and nutrient shortages in soils. This fact motivated this study; so, it aimed to evaluate chlorophyll and macronutrients content in leaf tissue of banana ‘Prata-Anã’ (AAB) under fertigation with doses of nitrogen and potassium. It were evaluated chlorophyll a, b and total and leaf contents of nitrogen (N), phosphorus (P), potassium (K), magnesium (Mg) and calcium (Ca) in banana trees grown in an Ultisol on the coastal tablelands of Sergipe State, Brazil. The experiment was conducted in the field, in a 42 factorial with four randomized blocks. Two factors with four levels were tested: nitrogen (0; 350; 700 and 1050, in kg ha-1 of N, as urea) and potassium (0; 400; 800 and 1200, in kg ha-1 of K2O, as potassium chloride). Increasing N applied through irrigation enhances leaf nitrogen until approximately 631.08 kg ha-1 of N, while chlorophyll total remains constant after 250 kg ha-1. Phosphorus and calcium are increased due to high doses of N, however, magnesium and potassium in the leaves are reduced. High doses of K increase leaf content of K until estimated dose of 698.07 kg ha-1 and reduce calcium and magnesium of banana ‘Prata-Anã’. Key words: Musa sp., mineral fertilizer, nutrition, photosynthetic pigments, nutrient splitting.
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Claims 6
Claim · model-written summary
Increasing nitrogen fertigation enhanced banana leaf nitrogen up to about 631.08 kg ha-1 N.
- Taxon
- bananae1
- Treatment
- N applied through irrigatione0
- Outcome
- leaf nitrogene0
- Direction
- enhancese0
- Value
- 631.08 kg ha-1 of Ne0
Not reportedComparator
Verbatim
e0“Increasing N applied through irrigation enhances leaf nitrogen until approximately 631.08 kg ha-1 of N”
e1“banana ‘Prata-Anã’ (AAB)”
Claim · model-written summary
Total chlorophyll remained constant above 250 kg ha-1 nitrogen.
- Taxon
- bananae2
- Treatment
- N applied through irrigatione1
- Outcome
- chlorophyll totale0
- Direction
- remains constante0
- Value
- 250 kg ha-1e0
Not reportedComparator
Verbatim
e0“chlorophyll total remains constant after 250 kg ha-1”
e1“Increasing N applied through irrigation”
e2“banana ‘Prata-Anã’ (AAB)”
Claim · model-written summary
High nitrogen doses increased banana leaf phosphorus and calcium.
Not reportedComparator
Verbatim
e0“Phosphorus and calcium are increased due to high doses of N”
e1“banana ‘Prata-Anã’ (AAB)”
Claim · model-written summary
High nitrogen doses reduced banana leaf magnesium and potassium.
- Taxon
- bananae2
- Treatment
- high doses of Ne1
- Outcome
- magnesium and potassium in the leavese0
- Direction
- reducede0
Not reportedComparator
Verbatim
e0“magnesium and potassium in the leaves are reduced”
e1“high doses of N”
e2“banana ‘Prata-Anã’ (AAB)”
Claim · model-written summary
High potassium doses increased banana leaf potassium up to an estimated dose of 698.07 kg ha-1.
- Taxon
- bananae1
- Treatment
- High doses of Ke0
- Outcome
- leaf content of Ke0
- Direction
- increasee0
- Value
- 698.07 kg ha-1e0
Not reportedComparator
Verbatim
e0“High doses of K increase leaf content of K until estimated dose of 698.07 kg ha-1”
e1“banana ‘Prata-Anã’ (AAB)”
Claim · model-written summary
High potassium doses reduced banana leaf calcium and magnesium.
Not reportedComparator
Verbatim
e0“High doses of K increase leaf content of K until estimated dose of 698.07 kg ha-1 and reduce calcium and magnesium of banana ‘Prata-Anã’”
The same questions in other papers
irrigation · nutrient: content · MusaPositive and negative results
6 papers in the same direction as this paper · 2 in the opposite direction · 1 reporting no difference from an alternative
- negative
- no effect
- no effect
6 papers more in this group
See all 10 papers →Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.