Abstract
Abstract Potato (Solatium tuberosum) generally requires high amounts of phosphate fertilizer to reach economically acceptable yields, particularly in soils originating from volcanic ash. This is a consequence of the potato plants low root density and the slow soil diffusion rate of phosphorus (P) in these soils. Our objective was to evaluate the effect of P rates on tuber yield, biomass production, and distribution, biomass P accumulation and concentration, and P distribution in potato cv. Mexiquense. The experiment was carried out in an Andisol (7.8 μg g‐1 Olsen‐P) located at the east of Valle de México. Fertilization rates were 0, 18,41,46,69,78,90,106,113,135,150,163, and 207 kg ha‐1 P, from ordinary superphosphate. Top growth and root biomass, tuber yield, P percentage and P accumulation in different plant parts were measured at harvest. Minimum and maximum average tuber yields were 8.4 and 18.0 Mg ha‐1; the plants absorbed 5.8 and 11.8 kg ha‐1 P, corresponding to 0 (control) and 207 kg ha‐1 P, respectively. Phosphorus fertilization had little influence on plant P concentration, where average concentrations in tuber and top growth were 0.20 and 0.24 % P, respectively. By contrast, P accumulation increased with increasing P rates, but P distribution between tuber and top growth was dependent on the amount of P applied. The control treatment showed approximately 1:1 distribution of P between top growth and tuber, but as P rate increased, top growth P decreased and tuber P increased. When applying the highest P rate, 36% of P accumulated in the top growth and 64 % in the tuber. The information obtained will permit decisions on the correct use of phosphate fertilizer for potato in Andisols of the Valle de Mexico.
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Claims 11
Claim · model-written summary
Tuber yield rose from 8.4 Mg ha‐1 at zero P to 18.0 Mg ha‐1 at 207 kg ha‐1 P.
- Taxon
- potato
Solanum tuberosume1 - Material
- Mexiquensee1
- Treatment
- 207 kg ha‐1 Pe0
- Outcome
- tuber yieldse0
- Direction
- increaseinferrede0
- Value
- 18.0 Mg ha‐1e0
- Qualifier
- 8.4e0
- Comparator
- 0 (control)e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Minimum and maximum average tuber yields were 8.4 and 18.0 Mg ha‐1; the plants absorbed 5.8 and 11.8 kg ha‐1 P, corresponding to 0 (control) and 207 kg ha‐1 P, respectively”
e1“potato cv. Mexiquense”
Claim · model-written summary
Plant P absorption rose from 5.8 to 11.8 kg ha‐1 P across the same fertilizer rates.
- Taxon
- potatoSolanum tuberosume1
- Treatment
- 207 kg ha‐1 Pe0
- Outcome
- plants absorbede0
- Direction
- increaseinferrede0
- Value
- 11.8 kg ha‐1 Pe0
- Qualifier
- 5.8e0
- Comparator
- 0 (control)e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the plants absorbed 5.8 and 11.8 kg ha‐1 P, corresponding to 0 (control) and 207 kg ha‐1 P, respectively”
e1“potato cv. Mexiquense”
Claim · model-written summary
Fertilization had little influence on plant P concentration.
- Taxon
- potatoSolanum tuberosume1
- Treatment
- Phosphorus fertilizatione0
- Outcome
- plant P concentratione0
- Direction
- little influencee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Phosphorus fertilization had little influence on plant P concentration”
e1“potato cv. Mexiquense”
Claim · model-written summary
Average tuber P concentration was 0.20 % P.
- Taxon
- potatoSolanum tuberosume1
- Organ / stage
- tubere0
- Outcome
- average concentrations in tubere0
- Value
- 0.20e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“average concentrations in tuber and top growth were 0.20 and 0.24 % P, respectively”
e1“potato cv. Mexiquense”
Claim · model-written summary
Average top-growth P concentration was 0.24 % P.
- Taxon
- potatoSolanum tuberosume1
- Organ / stage
- top growthe0
- Outcome
- average concentrations in tuber and top growthe0
- Value
- 0.24 % Pe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“average concentrations in tuber and top growth were 0.20 and 0.24 % P, respectively”
e1“potato cv. Mexiquense”
Claim · model-written summary
P accumulation increased with P rate.
- Taxon
- potatoSolanum tuberosume1
- Treatment
- P ratese0
- Outcome
- P accumulatione0
- Direction
- increasede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“P accumulation increased with increasing P rates”
e1“potato cv. Mexiquense”
Claim · model-written summary
P partitioning between tuber and top growth depended on applied P amount.
- Taxon
- potatoSolanum tuberosume1
- Treatment
- amount of P appliede0
- Outcome
- P distribution between tuber and top growthe0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“P distribution between tuber and top growth was dependent on the amount of P applied”
e1“potato cv. Mexiquense”
Claim · model-written summary
Without fertilizer, P distribution between top growth and tuber was about 1:1.
- Taxon
- potatoSolanum tuberosume1
- Outcome
- distribution of P between top growth and tubere0
- Value
- 1:1e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The control treatment showed approximately 1:1 distribution of P between top growth and tuber”
e1“potato cv. Mexiquense”
Claim · model-written summary
Increasing P rate decreased top-growth P share and increased tuber P share.
- Taxon
- potatoSolanum tuberosume1
- Treatment
- P ratee0
- Outcome
- top growth Pe0
- Direction
- decreasede0
- Qualifier
- tuber P increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“as P rate increased, top growth P decreased and tuber P increased”
e1“potato cv. Mexiquense”
Claim · model-written summary
At the highest P rate, 36% of accumulated P was in top growth.
- Taxon
- potatoSolanum tuberosume1
- Outcome
- P accumulated in the top growthe0
- Value
- 36%e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“When applying the highest P rate, 36% of P accumulated in the top growth and 64 % in the tuber”
e1“potato cv. Mexiquense”
Claim · model-written summary
At the highest P rate, 64 % of accumulated P was in the tuber.
- Taxon
- potatoSolanum tuberosume1
- Outcome
- P accumulated in the top growth and 64 % in the tubere0
- Value
- 64 %e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“When applying the highest P rate, 36% of P accumulated in the top growth and 64 % in the tuber”
e1“potato cv. Mexiquense”
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See all 123 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.