Abstract
Nitrogen (N) and potassium (K) are the most important nutrients for fruit yield and quality of citrus. Farmers - growing orange is usually applied high rates of N and K fertilizers. The study was carried out during 2017 and 2018 production year on a 4-year Valencia orange. The objective of the present paper was to evaluate the effect of combination between nitrogen and potassium on fruit yield and quality of Valencia orange. The experiment was used three doses of N (0.5, 1.0, and 1.5 kg/tree) in form of urea and three doses of K (0.6, 0.9, and 1.2 kg/tree) in form of potassium chloride in all combinations. The obtained results showed that N and K concentrations in soil did not increase with increment of N and K fertilization. Increment of N and K fertilization increased N content but did not increase K content in leaves. Fruit weight, fruit diameter and peel thickness increased with increasing of N fertilization. Maximum fruit yield of Valencia orange was attained with rates of 0.5 kg N/tree combined with 0.9 kg K/tree. Juice content increased with increasing amount of N fertilization. Increment of K fertilization tend to increase total acidity in fruit juice. The highest TSS and TSS/TA were attained with rates of 0.5 kg N/tree combined with 0.9 kg K/tree.
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Claims 8
Claim · model-written summary
Soil N and K concentrations did not increase with increasing N and K fertilisation.
- Taxon
- Valencia orange
Citrus sinensise0 - Treatment
- increment of N and K fertilizatione1
- Outcome
- N and K concentrations in soile1
- Direction
- did not increasee1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“on a 4-year Valencia orange”
e1“The obtained results showed that N and K concentrations in soil did not increase with increment of N and K fertilization”
Claim · model-written summary
Increasing N and K fertilisation increased leaf N content.
- Taxon
- Valencia orangeCitrus sinensise0
- Organ / stage
- leavese1
- Treatment
- Increment of N and K fertilizatione1
- Outcome
- N contente1
- Direction
- increasede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“on a 4-year Valencia orange”
e1“Increment of N and K fertilization increased N content but did not increase K content in leaves”
Claim · model-written summary
Increasing N and K fertilisation did not increase leaf K content.
- Taxon
- Valencia orangeCitrus sinensise0
- Organ / stage
- leavese1
- Treatment
- Increment of N and K fertilizatione1
- Outcome
- K contente1
- Direction
- did not increasee1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“on a 4-year Valencia orange”
e1“Increment of N and K fertilization increased N content but did not increase K content in leaves”
Claim · model-written summary
Fruit weight, fruit diameter and peel thickness increased with increasing N fertilisation.
- Taxon
- Valencia orangeCitrus sinensise0
- Organ / stage
- Fruite1
- Treatment
- increasing of N fertilizatione1
- Outcome
- Fruit weight, fruit diameter and peel thicknesse1
- Direction
- increasede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“on a 4-year Valencia orange”
e1“Fruit weight, fruit diameter and peel thickness increased with increasing of N fertilization”
Claim · model-written summary
Maximum fruit yield was attained with 0.5 kg N/tree combined with 0.9 kg K/tree.
- Taxon
- Valencia orangeCitrus sinensise0
- Treatment
- 0.5 kg N/tree combined with 0.9 kg K/treee1
- Outcome
- fruit yielde1
- Direction
- Maximume1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“on a 4-year Valencia orange”
e1“Maximum fruit yield of Valencia orange was attained with rates of 0.5 kg N/tree combined with 0.9 kg K/tree”
Claim · model-written summary
Juice content increased with increasing N fertilisation.
- Taxon
- Valencia orangeCitrus sinensise0
- Treatment
- increasing amount of N fertilizatione1
- Outcome
- Juice contente1
- Direction
- increasede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“on a 4-year Valencia orange”
e1“Juice content increased with increasing amount of N fertilization”
Claim · model-written summary
Increasing K fertilisation tended to increase total acidity in fruit juice.
- Taxon
- Valencia orangeCitrus sinensise0
- Treatment
- Increment of K fertilizatione1
- Outcome
- total acidity in fruit juicee1
- Direction
- tend to increasee1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“on a 4-year Valencia orange”
e1“Increment of K fertilization tend to increase total acidity in fruit juice”
Claim · model-written summary
The highest TSS and TSS/TA were attained with 0.5 kg N/tree combined with 0.9 kg K/tree.
- Taxon
- Valencia orangeCitrus sinensise0
- Treatment
- 0.5 kg N/tree combined with 0.9 kg K/treee1
- Outcome
- TSS and TSS/TAe1
- Direction
- higheste1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“on a 4-year Valencia orange”
e1“The highest TSS and TSS/TA were attained with rates of 0.5 kg N/tree combined with 0.9 kg K/tree”
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