Abstract
Conservation practices in potato (Solanum tuberosum L.) cropping systems can reduce excess tillage, provide crop residue cover, and maintain crop productivity; however, little is known about their long-term influence on soil biota and biological properties. Conservation tillage was evaluated in two potato rotations: a 2-yr barley-potato rotation and 3-yr clover-based (barley-red clover-potato) rotation initiated in 1994 on a fine sandy loam (Orthic Podzol) in Prince Edward Island, eastern Canada. Soil samples were obtained in 2003 from the 0- to 10-cm soil depth of the potato phase of both rotations to evaluate the influence of conservation, compared with conventional tillage, on changes in soil fertility, soil structural properties, soil C and N fractions, soil-borne pathogens, nematode communities, and micro-arthropod (Collembola and Acari) communities. The 3-yr conservation tillage practice improved soil structural stability, increased soil extractable P and K, increased soil organic C and total N and their particulate fractions, compared with the other treatments. Comparisons with earlier studies indicated that soil organic C had reached an equilibrium level at the 0- to 10-cm soil depth. Reduction of potato disease caused by Rhizoctonia solani was evident in the 3-yr rotation, compared with the 2-yr rotation, but was not influenced by tillage practice. Plant parasitic nematodes were not greatly influenced by rotation and tillage treatments; however, densities of the beneficial bacterial-feeding nematodes were increased under the 3-yr conservation tillage treatment. The abundance of micro-arthropods was increased by conservation tillage, while their diversity was mainly influenced by the rotation cycle rather than tillage practice. Overall, the 3-yr conservation tillage treatment provided a more beneficial soil biological condition than the other treatments, especially when compared with the 2-yr conventional tillage practice. Key words: Conservation systems, potato rotation, fine sandy loam, soil fertility, soil organic C and N fractions, soil structure, soil-borne pathogens, nematode, Collembola; Acari
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Claims 11
Claim · model-written summary
Three-year conservation tillage improved soil structural stability.
- Taxon
- potato
Solanum tuberosumt0 - Treatment
- 3-yr conservation tillage practicee0
- Outcome
- soil structural stabilitye0
- Direction
- improvede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The 3-yr conservation tillage practice improved soil structural stability”
t0“potato (Solanum tuberosum L.) cropping systems”
Claim · model-written summary
Three-year conservation tillage increased soil extractable P and K.
- Taxon
- potatoSolanum tuberosumt0
- Outcome
- soil extractable P and Ke0
- Direction
- increasede0
Not reportedTreatmentComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“increased soil extractable P and K”
t0“potato (Solanum tuberosum L.) cropping systems”
Claim · model-written summary
Three-year conservation tillage increased soil organic C and total N and their particulate fractions.
- Taxon
- potatoSolanum tuberosumt0
- Outcome
- soil organic C and total N and their particulate fractionse0
- Direction
- increasede0
- Comparator
- other treatmentse0
Not reportedTreatment
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“increased soil organic C and total N and their particulate fractions, compared with the other treatments.”
t0“potato (Solanum tuberosum L.) cropping systems”
Claim · model-written summary
Soil organic C reached equilibrium at 0- to 10-cm depth.
- Taxon
- potatoSolanum tuberosumt0
- Outcome
- soil organic Ce0
- Qualifier
- 0- to 10-cm soil depthe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“soil organic C had reached an equilibrium level at the 0- to 10-cm soil depth”
t0“potato (Solanum tuberosum L.) cropping systems”
Claim · model-written summary
The three-year rotation reduced potato disease caused by Rhizoctonia solani compared with the two-year rotation.
- Taxon
- potatoSolanum tuberosume0
- Treatment
- 3-yr rotatione0
- Interactor
- Rhizoctonia solani
Rhizoctonia solanie0pathogen - Outcome
- potato disease caused by Rhizoctonia solanie0
- Direction
- Reductione0
- Comparator
- 2-yr rotatione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Reduction of potato disease caused by Rhizoctonia solani was evident in the 3-yr rotation, compared with the 2-yr rotation”
Claim · model-written summary
Tillage practice did not affect Rhizoctonia potato disease.
- Taxon
- potatoSolanum tuberosumt0
- Treatment
- tillage practicee0
- Interactor
- Rhizoctonia solaniRhizoctonia solanie0pathogen
- Outcome
- potato diseasee0
- Direction
- no_changeinferrede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Reduction of potato disease caused by Rhizoctonia solani was evident in the 3-yr rotation, compared with the 2-yr rotation, but was not influenced by tillage practice.”
t0“potato (Solanum tuberosum L.) cropping systems”
Claim · model-written summary
Plant parasitic nematodes were little affected by rotation and tillage.
- Taxon
- potatoSolanum tuberosumt0
- Treatment
- rotation and tillage treatmentse0
- Interactor
- Plant parasitic nematodese0pest
- Outcome
- Plant parasitic nematodese0
- Direction
- not greatly influencede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Plant parasitic nematodes were not greatly influenced by rotation and tillage treatments”
t0“potato (Solanum tuberosum L.) cropping systems”
Claim · model-written summary
Beneficial bacterial-feeding nematode density increased under three-year conservation tillage.
- Taxon
- potatoSolanum tuberosumt0
- Treatment
- 3-yr conservation tillage treatmente0
- Interactor
- bacterial-feeding nematodese0other
- Outcome
- densities of the beneficial bacterial-feeding nematodese0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“densities of the beneficial bacterial-feeding nematodes were increased under the 3-yr conservation tillage treatment”
t0“potato (Solanum tuberosum L.) cropping systems”
Claim · model-written summary
Conservation tillage increased micro-arthropod abundance.
- Taxon
- potatoSolanum tuberosumt0
- Treatment
- conservation tillagee0
- Interactor
- micro-arthropodse0other
- Outcome
- abundance of micro-arthropodse0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The abundance of micro-arthropods was increased by conservation tillage”
t0“potato (Solanum tuberosum L.) cropping systems”
Claim · model-written summary
Rotation cycle influenced micro-arthropod diversity more than tillage.
- Taxon
- potatoSolanum tuberosumt0
- Treatment
- rotation cyclee0
- Interactor
- micro-arthropodse0other
- Outcome
- diversitye0
- Comparator
- tillage practicee0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The abundance of micro-arthropods was increased by conservation tillage, while their diversity was mainly influenced by the rotation cycle rather than tillage practice”
t0“potato (Solanum tuberosum L.) cropping systems”
Claim · model-written summary
Three-year conservation tillage provided more beneficial soil biology than other treatments.
- Taxon
- potatoSolanum tuberosumt0
- Treatment
- 3-yr conservation tillage treatmente0
- Outcome
- soil biological conditione0
- Direction
- more beneficiale0
- Comparator
- other treatmentse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the 3-yr conservation tillage treatment provided a more beneficial soil biological condition than the other treatments”
t0“potato (Solanum tuberosum L.) cropping systems”
The same questions in other papers
tillage · Rhizoctonia solani · Solanum tuberosum (potato)Positive and negative results
2 in the opposite direction
- positive
- positive
tillage · pest · Solanum tuberosum (potato)Positive and negative results
1 paper in the same direction as this paper · 2 in the opposite direction
- negative
- negative
- positive
rotation · Rhizoctonia solani · Solanum tuberosum (potato)Results agree
4 papers in the same direction as this paper
- positive
- positive
- positive
1 paper more in this group
See all 5 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.