Abstract
A factorial experiment was done on Elberta peach seedlings growing in sand culture to test tree response to applied solutions of calcium nitrate and sodium dihydrogen phosphate, and to sheep manure which had been mixed throughout the sand before planting. Results showed that the phosphate and sheep manure treatments exerted a more pronounced influence on seedling growth and leaf nutrient composition when harvested after 9 weeks than did the nitrogen treatments. In the absence of sheep manure, seedling growth was increased by increasing the phosphate supply to the maximum tested (64 p.p.m. P). A strong, negative interaction was found between phosphate and sheep manure treatments in both seedling growth and leaf composition data, and it is concluded that the sheep manure served as a rich source of phosphate in this situation. In addition, application of sheep manure (except in the presence of 64 p.p.m. P) apparently increased uptake of N, P, K, Ca, and Mg by the seedlings, and also increased the concentrations of Ca, K, and P in the leaves. Other results relating to leaf composition are discussed and it is suggested that a Ca/Mg antagonism was operative.
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Claims 10
Claim · model-written summary
Phosphate and manure affected seedling growth more strongly than nitrogen.
- Taxon
- peach
Prunus persicat0 - Treatment
- phosphate and sheep manure treatmentse0
- Outcome
- seedling growthe0
- Direction
- more pronouncede0
- Qualifier
- after 9 weekse0
- Comparator
- nitrogen treatmentse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the phosphate and sheep manure treatments exerted a more pronounced influence on seedling growth and leaf nutrient composition when harvested after 9 weeks than did the nitrogen treatments.”
t0“peach”
Claim · model-written summary
Phosphate and manure affected leaf nutrient composition more strongly than nitrogen.
- Taxon
- peachPrunus persicat0
- Treatment
- phosphate and sheep manure treatmentse0
- Outcome
- leaf nutrient compositione0
- Direction
- more pronouncede0
- Qualifier
- after 9 weekse0
- Comparator
- nitrogen treatmentse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the phosphate and sheep manure treatments exerted a more pronounced influence on seedling growth and leaf nutrient composition when harvested after 9 weeks than did the nitrogen treatments.”
t0“peach”
Claim · model-written summary
In the absence of manure, more phosphate increased seedling growth up to the highest tested supply.
- Taxon
- peachPrunus persicat0
- Treatment
- increasing the phosphate supplye0
- Outcome
- seedling growthe0
- Direction
- increasede0
- Value
- 64 p.p.m. Pe0
- Qualifier
- absence of sheep manuree0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In the absence of sheep manure, seedling growth was increased by increasing the phosphate supply to the maximum tested (64 p.p.m. P).”
t0“peach”
Claim · model-written summary
Phosphate and manure had a strong negative interaction for seedling growth.
- Taxon
- peachPrunus persicat0
- Treatment
- phosphate and sheep manure treatmentse0
- Outcome
- seedling growthe0
- Direction
- negativee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“A strong, negative interaction was found between phosphate and sheep manure treatments in both seedling growth and leaf composition data”
t0“peach”
Claim · model-written summary
Phosphate and manure had a strong negative interaction for leaf composition.
- Taxon
- peachPrunus persicat0
- Treatment
- phosphate and sheep manure treatmentse0
- Outcome
- leaf compositione0
- Direction
- negativee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“A strong, negative interaction was found between phosphate and sheep manure treatments in both seedling growth and leaf composition data”
t0“peach”
Claim · model-written summary
The authors concluded that manure was a rich phosphate source.
- Taxon
- peachPrunus persicat0
- Treatment
- sheep manuree0
- Outcome
- rich source of phosphatee0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“it is concluded that the sheep manure served as a rich source of phosphate in this situation.”
t0“peach”
Claim · model-written summary
Manure apparently increased seedling uptake of N, P, and K except at the highest phosphate supply.
- Taxon
- peachPrunus persicat0
- Treatment
- application of sheep manuree0
- Outcome
- uptake of N, P, Ke0
- Direction
- increasede0
- Qualifier
- except in the presence of 64 p.p.m. Pe0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“application of sheep manure (except in the presence of 64 p.p.m. P) apparently increased uptake of N, P, K, Ca, and Mg by the seedlings”
t0“peach”
Claim · model-written summary
Manure apparently increased seedling uptake of Ca and Mg except at the highest phosphate supply.
- Taxon
- peachPrunus persicat0
- Treatment
- application of sheep manuree0
- Outcome
- Ca, and Mge0
- Direction
- increasede0
- Qualifier
- except in the presence of 64 p.p.m. Pe0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“application of sheep manure (except in the presence of 64 p.p.m. P) apparently increased uptake of N, P, K, Ca, and Mg by the seedlings”
t0“peach”
Claim · model-written summary
Manure increased leaf Ca, K, and P concentrations.
- Taxon
- peachPrunus persicat0
- Outcome
- concentrations of Ca, K, and P in the leavese0
- Direction
- increasede0
Not reportedTreatmentComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“also increased the concentrations of Ca, K, and P in the leaves.”
t0“peach”
Claim · model-written summary
The authors suggested calcium-magnesium antagonism.
- Taxon
- peachPrunus persicat0
- Outcome
- Ca/Mg antagonisme0
- Qualifier
- operativee0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“it is suggested that a Ca/Mg antagonism was operative.”
t0“peach”
The same questions in other papers
phosphorus · growth · Prunus persica (peach)Positive and negative results
6 papers in the same direction as this paper · 3 in the opposite direction
- no effect
- negative
- no effect
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See all 10 papers →fertilization · nutrient: content · Prunus persica (peach)Positive and negative results
19 papers in the same direction as this paper · 5 in the opposite direction · 1 reporting no difference from an alternative
- no effect
- no effect
- no effect
22 papers more in this group
See all 26 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.