Abstract
A field experiment was carried out in Tuscany (Central Italy) to assess the contribution of different amendments in combination with a green manure legume cover crop (Trifolium subterraneum L.) to organic spring potato (cv. Monna Lisa) nutrition. The experimental field was divided into three blocks (replicates) and each of them was split in two main strips, representing different management systems, in which a subterranean clover (Trifolium subterraneum L.) green manure was cultivated or not. Within each strip, elementary plots, which received farmyard cattle manure or green compost at three different rates, corresponding to an amount of N 0, 50 and 100 kg ha -1 , were randomly distributed according to a split-plot layout. Potato yield, N uptake and use efficiency were measured during the cropping cycle and at crop harvest. Furthermore, soil mineral N dynamics was studied to evaluate the potential impact on the environment by combination of compost application and leguminous green manure. Results obtained demonstrated that the cultivation of clover green manure and the application of farmyard manure substantially increased the total potato yield of 22.5% and 25.1%, respectively. The highest dose of organic amendments applied to the crop enhanced the potato production and N use efficiency by 43.3% and 16.9%, compared with the unfertilized control. However, the combination of clover green manure and amendments distribution did not increase the soil mineral N at the end of potato cropping cycle. These findings indicate that it is possible to modify the agronomical practices in organic potato production without enhanced potential environmental risks due to N leaching. On the basis of these results, effective strategies based on legume green manure combined with organic amendments application can be developed for establishing both new agronomical practices and N fertilizer methodologies applied to organic potato production.
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Claims 6
Claim · model-written summary
Clover green manure increased total potato yield by 22.5%.
- Taxon
- potato
Solanum tuberosume0 - Material
- Monna Lisae0
- Treatment
- the cultivation of clover green manuree2
- Outcome
- total potato yielde2
- Direction
- increasede2
- Value
- 22.5%e2
- Setting
- Tuscany (Central Italy)e1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“a green manure legume cover crop (Trifolium subterraneum L.) to organic spring potato (cv. Monna Lisa) nutrition”
e1“A field experiment was carried out in Tuscany (Central Italy)”
e2“the cultivation of clover green manure and the application of farmyard manure substantially increased the total potato yield of 22.5% and 25.1%”
Claim · model-written summary
Farmyard manure application increased total potato yield by 25.1%.
- Taxon
- potatoSolanum tuberosume0
- Material
- Monna Lisae0
- Treatment
- application of farmyard manuree2
- Outcome
- total potato yielde2
- Direction
- increasede2
- Value
- 25.1%e2
- Setting
- Tuscany (Central Italy)e1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“a green manure legume cover crop (Trifolium subterraneum L.) to organic spring potato (cv. Monna Lisa) nutrition”
e1“A field experiment was carried out in Tuscany (Central Italy)”
e2“the cultivation of clover green manure and the application of farmyard manure substantially increased the total potato yield of 22.5% and 25.1%”
Claim · model-written summary
Highest dose of organic amendments increased potato production by 43.3% compared with the unfertilized control.
- Taxon
- potatoSolanum tuberosume0
- Treatment
- highest dose of organic amendmentse3
- Outcome
- potato productione3
- Direction
- enhancede3
- Value
- 43.3%e3
- Comparator
- unfertilized controle3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“a green manure legume cover crop (Trifolium subterraneum L.) to organic spring potato (cv. Monna Lisa) nutrition”
e3“The highest dose of organic amendments applied to the crop enhanced the potato production and N use efficiency by 43.3% and 16.9%, compared with the unfertilized control”
Claim · model-written summary
Highest dose of organic amendments increased N use efficiency by 16.9% compared with the unfertilized control.
- Taxon
- potatoSolanum tuberosume0
- Treatment
- highest dose of organic amendmentse3
- Outcome
- N use efficiencye3
- Direction
- enhancede3
- Value
- 16.9%e3
- Comparator
- unfertilized controle3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“a green manure legume cover crop (Trifolium subterraneum L.) to organic spring potato (cv. Monna Lisa) nutrition”
e3“The highest dose of organic amendments applied to the crop enhanced the potato production and N use efficiency by 43.3% and 16.9%, compared with the unfertilized control”
Claim · model-written summary
Combining clover green manure with amendments did not increase soil mineral N at the end of the potato cycle.
- Taxon
- potatoSolanum tuberosume0
- Treatment
- the combination of clover green manure and amendments distributione4
- Outcome
- soil mineral Ne4
- Direction
- did not increasee4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“a green manure legume cover crop (Trifolium subterraneum L.) to organic spring potato (cv. Monna Lisa) nutrition”
e4“the combination of clover green manure and amendments distribution did not increase the soil mineral N at the end of potato cropping cycle”
Claim · model-written summary
Legume green manure combined with organic amendments can be developed into strategies for new agronomical practices in organic potato (authors’ conclusion).
- Taxon
- potatoSolanum tuberosume0
- Treatment
- legume green manure combined with organic amendmentse5
- Outcome
- new agronomical practicese5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“a green manure legume cover crop (Trifolium subterraneum L.) to organic spring potato (cv. Monna Lisa) nutrition”
e5“effective strategies based on legume green manure combined with organic amendments application can be developed for establishing both new agronomical practices”
The same questions in other papers
organic · yield · Solanum tuberosum (potato)Positive and negative results
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- no effect
- no effect
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See all 26 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
- positive
- positive
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See all 450 papers →organic · nutrient: efficiency · Solanum tuberosum (potato)Results agree
1 paper in the same direction as this paper
- positive
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.