Abstract
Abstract Undesirable growth of potato ( Solanum tuberosum L.) crop under an excessive N fertilizer application is the main obstacle presently. This research was conducted to investigate the response of different potato cultivars; Russet Burbank, Shepody, and Superior, and its qualitative characteristics under a series of N rates. Six rates of N fertilization (0–280 kg ha −1 ) were applied on 11 sites in a randomized complete block design, with four replications. Sites with ≥30 g kg −1 of soil organic matter (OM) produced total tuber yield, marketable yield, and tuber weight per plant 39.5, 45.2, and 54.9%, respectively, higher than sites with ≤30 g kg −1 of OM. Tubers specific gravity increased by 0.18% in the sites with ≥30 g kg −1 of OM. The total tuber yield for the three cultivars was maximized at 168 kg N ha −1 . Marketable specific gravity, starch, and dry matter content were achieved by applying 168 and 112 kg N ha −1 at ≤30 and ≥30 g kg −1 of OM sites, respectively. Russet Burbank produced a higher yield than Shepody and Superior cultivars significantly, but there was no significant difference among them regarding specific gravity. Excessive N application (>168 kg ha −1 ) decreased potato tuber production and quality.
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Claims 10
Claim · model-written summary
High organic matter sites had 39.5% higher total tuber yield.
- Taxon
- potato
Solanum tuberosume1 - Outcome
- total tuber yielde0
- Direction
- highere0
- Value
- 39.5e0
- Comparator
- sites with ≤30 g kg −1 of OMe0
- Setting
- Sites with ≥30 g kg −1 of soil organic matter (OM)e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Sites with ≥30 g kg −1 of soil organic matter (OM) produced total tuber yield, marketable yield, and tuber weight per plant 39.5, 45.2, and 54.9%, respectively, higher than sites with ≤30 g kg −1 of OM”
e1“potato ( Solanum tuberosum L.)”
Claim · model-written summary
High organic matter sites had 45.2% higher marketable yield.
- Taxon
- potatoSolanum tuberosume1
- Outcome
- marketable yielde0
- Direction
- highere0
- Value
- 45.2e0
- Comparator
- sites with ≤30 g kg −1 of OMe0
- Setting
- Sites with ≥30 g kg −1 of soil organic matter (OM)e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Sites with ≥30 g kg −1 of soil organic matter (OM) produced total tuber yield, marketable yield, and tuber weight per plant 39.5, 45.2, and 54.9%, respectively, higher than sites with ≤30 g kg −1 of OM”
e1“potato ( Solanum tuberosum L.)”
Claim · model-written summary
High organic matter sites had 54.9% higher tuber weight per plant.
- Taxon
- potatoSolanum tuberosume1
- Outcome
- tuber weight per plante0
- Direction
- highere0
- Value
- 54.9%e0
- Comparator
- sites with ≤30 g kg −1 of OMe0
- Setting
- Sites with ≥30 g kg −1 of soil organic matter (OM)e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Sites with ≥30 g kg −1 of soil organic matter (OM) produced total tuber yield, marketable yield, and tuber weight per plant 39.5, 45.2, and 54.9%, respectively, higher than sites with ≤30 g kg −1 of OM”
e1“potato ( Solanum tuberosum L.)”
Claim · model-written summary
Tuber specific gravity rose 0.18% at high organic matter sites.
- Taxon
- potatoSolanum tuberosume1
- Outcome
- Tubers specific gravitye0
- Direction
- increasede0
- Value
- 0.18%e0
- Setting
- sites with ≥30 g kg −1 of OMe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Tubers specific gravity increased by 0.18% in the sites with ≥30 g kg −1 of OM”
e1“potato ( Solanum tuberosum L.)”
Claim · model-written summary
Total tuber yield for all three cultivars peaked at 168 kg N ha −1.
- Taxon
- potatoSolanum tuberosume1
- Treatment
- 168 kg N ha −1e0
- Outcome
- total tuber yielde0
- Direction
- maximizede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The total tuber yield for the three cultivars was maximized at 168 kg N ha −1”
e1“potato ( Solanum tuberosum L.)”
Claim · model-written summary
At low organic matter sites, 168 kg N ha−1 achieved marketable specific gravity, starch and dry matter content.
- Taxon
- potatoSolanum tuberosume1
- Treatment
- 168e0
- Outcome
- Marketable specific gravity, starch, and dry matter contente0
- Setting
- ≤30e0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Marketable specific gravity, starch, and dry matter content were achieved by applying 168 and 112 kg N ha −1 at ≤30 and ≥30 g kg −1 of OM sites, respectively”
e1“potato ( Solanum tuberosum L.)”
Claim · model-written summary
At high organic matter sites, 112 kg N ha−1 achieved marketable specific gravity, starch and dry matter content.
- Taxon
- potatoSolanum tuberosume1
- Treatment
- 112 kg N ha −1e0
- Outcome
- Marketable specific gravity, starch, and dry matter contente0
- Setting
- ≥30 g kg −1 of OM sitese0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Marketable specific gravity, starch, and dry matter content were achieved by applying 168 and 112 kg N ha −1 at ≤30 and ≥30 g kg −1 of OM sites, respectively”
e1“potato ( Solanum tuberosum L.)”
Claim · model-written summary
Russet Burbank yielded significantly more than Shepody and Superior.
- Taxon
- potatoSolanum tuberosume1
- Material
- Russet Burbanke0
- Outcome
- yielde0
- Direction
- highere0
- Comparator
- Shepody and Superiore0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Russet Burbank produced a higher yield than Shepody and Superior cultivars significantly”
e1“potato ( Solanum tuberosum L.)”
Claim · model-written summary
The three cultivars had no significant difference in specific gravity.
- Taxon
- potatoSolanum tuberosume2
- Material
- Russet Burbanke1
- Outcome
- specific gravitye0
- Direction
- no significant differencee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“there was no significant difference among them regarding specific gravity”
e1“Russet Burbank produced a higher yield than Shepody and Superior cultivars significantly”
e2“potato ( Solanum tuberosum L.)”
Claim · model-written summary
Excess nitrogen above 168 kg ha−1 reduced tuber production and quality.
- Taxon
- potatoSolanum tuberosume0
- Treatment
- Excessive N application (>168 kg ha −1 )e0
- Outcome
- potato tuber production and qualitye0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Excessive N application (>168 kg ha −1 ) decreased potato tuber production and quality”
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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.