Abstract
The environmental impact of using chemical fungicides to suppress disease in potato production is becoming a concern in recent years. The use of compost tea as a disease suppressant is becoming popular. A study was conducted at Colorado State University, San Luis Valley Research Center, U. S. A. from 2007 to 2009, to evaluate the interactive effect of nitrogen fertilizer rate and compost tea or fungicide application on tuber yield, tuber size distribution and quality of potato cultivars Russet Norkotah and Russet Nugget. Treatment combinations included nitrogen fertilizer (N) applied at 90 and 134 kg/ha with compost tea or fungicide applied. Two control treatments were established where N was applied at 90 and 134 kg/ha with no compost tea or fungicide application. Medium size tuber yield (114-284 g tubers) increased significantly in all three years for Russet Norkotah when compost tea was applied with 90 kg N/ha (2007) or with 134 kg N/ha (2007, 2008 and 2009). Marketable size tuber yield (114-454 g tubers) of Russet Norkotah was significantly increased when compost tea was applied with 134 kg N/ha (2007 and 2009), compared to the control treatment. For Russet Nugget, medium size tuber yield increased significantly in all three years of the study when compost tea was applied with 90 kg nitrogen fertilizer/ha, compared to the control treatment. The yield of large marketable size (170-340 g and 170-454 g tubers) increased when compost tea was applied with 90 kg N/ha in two of the three years study. For Russet Norkotah, the application of fungicide increased tuber specific gravity, compared to the application of compost tea and the control treatments. However, for Russet Nugget tuber specific gravity was similar in the fungicide and compost tea treatments in two of the three years study. Results of these studies suggest that compost tea can be used with reduced or no fungicide application to produce optimum tuber yields in potato production.
Abstract from the paper’s OpenAlex record, shown for indexing and research. Copyright remains with the authors or the publisher. Read at the source ↗
The text the model read, with the source record’s inline markup (italics, sub- and superscripts) rendered and its character entities decoded; quote offsets refer to the raw text.
Claims 8
Claim · model-written summary
Compost tea with 90 kg N/ha increased Russet Norkotah medium-tuber yield in 2007.
- Taxon
- potato
Solanum tuberosumt0 - Material
- Russet Norkotahe0
- Treatment
- compost tea was applied with 90 kg N/hae0
- Outcome
- Medium size tuber yielde0
- Direction
- increasede0
- Qualifier
- 2007e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Medium size tuber yield (114-284 g tubers) increased significantly in all three years for Russet Norkotah when compost tea was applied with 90 kg N/ha (2007) or with 134 kg N/ha (2007, 2008 and 2009)”
t0“potato cultivars”
Claim · model-written summary
Compost tea with 134 kg N/ha increased Russet Norkotah medium-tuber yield in all three years.
- Taxon
- potatoSolanum tuberosumt0
- Material
- Russet Norkotahe0
- Treatment
- with 134 kg N/hae0
- Outcome
- Medium size tuber yielde0
- Direction
- increasede0
- Qualifier
- 2007, 2008 and 2009e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Medium size tuber yield (114-284 g tubers) increased significantly in all three years for Russet Norkotah when compost tea was applied with 90 kg N/ha (2007) or with 134 kg N/ha (2007, 2008 and 2009)”
t0“potato cultivars”
Claim · model-written summary
Compost tea with 134 kg N/ha significantly increased Russet Norkotah marketable-tuber yield versus control in 2007 and 2009.
- Taxon
- potatoSolanum tuberosumt0
- Material
- Russet Norkotahe0
- Treatment
- compost tea was applied with 134 kg N/hae0
- Outcome
- Marketable size tuber yielde0
- Direction
- increasede0
- Qualifier
- 2007 and 2009e0
- Comparator
- control treatmente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Marketable size tuber yield (114-454 g tubers) of Russet Norkotah was significantly increased when compost tea was applied with 134 kg N/ha (2007 and 2009), compared to the control treatment”
t0“potato cultivars”
Claim · model-written summary
Compost tea with 90 kg nitrogen fertilizer/ha significantly increased Russet Nugget medium-tuber yield versus control in all three years.
- Taxon
- potatoSolanum tuberosumt0
- Material
- Russet Nuggete0
- Treatment
- compost tea was applied with 90 kg nitrogen fertilizer/hae0
- Outcome
- medium size tuber yielde0
- Direction
- increasede0
- Qualifier
- all three years of the studye0
- Comparator
- control treatmente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“For Russet Nugget, medium size tuber yield increased significantly in all three years of the study when compost tea was applied with 90 kg nitrogen fertilizer/ha, compared to the control treatment”
t0“potato cultivars”
Claim · model-written summary
Compost tea with 90 kg N/ha increased Russet Nugget large marketable-tuber yield in two of three years.
- Taxon
- potatoSolanum tuberosumt0
- Material
- Russet Nuggete1
- Treatment
- compost tea was applied with 90 kg N/hae0
- Outcome
- yield of large marketable sizee0
- Direction
- increasede0
- Qualifier
- in two of the three years studye0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The yield of large marketable size (170-340 g and 170-454 g tubers) increased when compost tea was applied with 90 kg N/ha in two of the three years study”
e1“For Russet Nugget, medium size tuber yield”
t0“potato cultivars”
Claim · model-written summary
Fungicide increased Russet Norkotah tuber specific gravity relative to compost tea and controls.
- Taxon
- potatoSolanum tuberosumt0
- Material
- Russet Norkotahe0
- Treatment
- application of fungicidee0
- Outcome
- tuber specific gravitye0
- Direction
- increasede0
- Comparator
- application of compost tea and the control treatmentse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“For Russet Norkotah, the application of fungicide increased tuber specific gravity, compared to the application of compost tea and the control treatments”
t0“potato cultivars”
Claim · model-written summary
Russet Nugget tuber specific gravity was similar under fungicide and compost tea in two of three years.
- Taxon
- potatoSolanum tuberosumt0
- Material
- Russet Nuggete0
- Treatment
- fungicidee0
- Outcome
- tuber specific gravitye0
- Direction
- similare0
- Qualifier
- two of the three years studye0
- Comparator
- compost tea treatmentse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“for Russet Nugget tuber specific gravity was similar in the fungicide and compost tea treatments in two of the three years study”
t0“potato cultivars”
Claim · model-written summary
The authors suggest compost tea can support optimal potato tuber yields with reduced or no fungicide.
- Taxon
- potatoSolanum tuberosume0
- Outcome
- compost tea can be used with reduced or no fungicide application to produce optimum tuber yieldse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“compost tea can be used with reduced or no fungicide application to produce optimum tuber yields in potato production”
The same questions in other papers
nitrogen · yield · Solanum tuberosum (potato)Results differ
108 papers in the same direction as this paper · 20 in the opposite direction · 3 reporting no difference from an alternative
- no effect
- negative
- negative
128 papers more in this group
See all 132 papers →nitrogen · quality: postharvest · Solanum tuberosum (potato)Positive and negative results
22 papers in the same direction as this paper · 3 in the opposite direction · 2 reporting no difference from an alternative
- negative
- negative
- no effect
24 papers more in this group
See all 28 papers →fertilization · quality: postharvest · Solanum tuberosum (potato)Positive and negative results
36 papers in the same direction as this paper · 8 in the opposite direction
- no effect
- no effect
- no effect
41 papers more in this group
See all 45 papers →fertilization · yield · Solanum tuberosum (potato)Positive and negative results
393 papers in the same direction as this paper · 48 in the opposite direction · 8 reporting no difference from an alternative
- negative
- negative
- no effect
446 papers more in this group
See all 450 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.