Abstract
Reduced tillage and green manures may be capable to further improve organic crop production systems, if they are adapted to the specific needs of organic farming. One goal of the European research project TILMAN ORG (www.tilman-org.net) is to develop a more efficient weed management with at the same time increased biodiversity through improved use of green manures in different systems of reduced tillage. The results of a repeated one year trial on “Domaene Frankenhausen”, the research farm of University of Kassel, regarding the effect of both leguminous and non-leguminous green manures on weeds in four different tillage systems is the main topic of this paper. After the green manure species Sinapis alba, Trifolium resupinatum and Vicia sativa and a bare fallow as a control the main crop oat was sown in four different tillage systems: plough, chisel (2012) respectively disc harrow (2013), mulching + drilling and direct drilling. 2012 weed cover was generally low in the plough system compared to the other tillage systems. In the mulching + drilling- and direct drilling- systems the plots after the green manure species S. alba and T. resupinatum and the bare fallow had to be given up because weed pressure was too high. Compared to that V. sativa was able to suppress weeds considerably better and resulted in similar yields to the plough and chisel treatments 2012 on a level from 55.3 dt ha-1 to 59.1 dt ha-1. 2013 all mulching + drilling- and direct drilling- plots had to be given up because of too high weed pressure. The weed pressure in the disc harrow – system differed not significantly from the plough system, but only green manure species Vicia sativa resulted in similar oat yields compared to the plough treatments (V. sativa x disc harrow 56.2 dt ha-1, V. sativa x plough 53.9 dt ha-1). In the plough – treatments there was an overall low weed pressure. Concerning yield there were no significant differences regarding green manure treatment.
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Claims 9
Claim · model-written summary
Weed cover was lower in the plough system than in the other tillage systems in 2012
- Taxon
- oat
Avena sativae1 - Treatment
- plough systeme0
- Interactor
- weede0weed
- Outcome
- weed covere0
- Direction
- lowe0
- Comparator
- the other tillage systemse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“2012 weed cover was generally low in the plough system compared to the other tillage systems”
e1“the main crop oat was sown in four different tillage systems”
Claim · model-written summary
In 2012 plots after S. alba, T. resupinatum and bare fallow had to be given up because of high weed pressure in the mulching and direct drilling systems
- Taxon
- oatAvena sativae1
- Treatment
- green manure species S. alba and T. resupinatume0
- Interactor
- weede0weed
- Outcome
- had to be given upe0
- Qualifier
- weed pressure was too highe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the plots after the green manure species S. alba and T. resupinatum and the bare fallow had to be given up because weed pressure was too high”
e1“the main crop oat was sown in four different tillage systems”
Claim · model-written summary
Vicia sativa suppressed weeds considerably better than the green manure species S. alba and T. resupinatum and the bare fallow in 2012
- Taxon
- oatAvena sativae2
- Treatment
- V. sativae0
- Interactor
- weede0weed
- Outcome
- weedse0
- Direction
- suppresse0
- Qualifier
- considerably bettere0
- Comparator
- the green manure species S. alba and T. resupinatum and the bare fallowe1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Compared to that V. sativa was able to suppress weeds considerably better and resulted in similar yields to the plough and chisel treatments 2012 on a level from 55.3 dt ha-1 to 59.1 dt ha-1”
e1“the plots after the green manure species S. alba and T. resupinatum and the bare fallow had to be given up because weed pressure was too high”
e2“the main crop oat was sown in four different tillage systems”
Claim · model-written summary
Vicia sativa gave oat yields similar to the plough and chisel treatments in 2012, 55.3 to 59.1 dt/ha
- Taxon
- oatAvena sativae1
- Treatment
- V. sativae0
- Outcome
- yieldse0
- Direction
- similare0
- Value
- 55.3 dt ha-1 to 59.1 dt ha-1e0
- Comparator
- plough and chisel treatmentse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Compared to that V. sativa was able to suppress weeds considerably better and resulted in similar yields to the plough and chisel treatments 2012 on a level from 55.3 dt ha-1 to 59.1 dt ha-1”
e1“the main crop oat was sown in four different tillage systems”
Claim · model-written summary
In 2013 plots of the mulching and direct drilling systems had to be given up because of too high weed pressure
- Taxon
- oatAvena sativae1
- Interactor
- weede0weed
- Outcome
- had to be given upe0
- Qualifier
- too high weed pressuree0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“2013 all mulching + drilling- and direct drilling- plots had to be given up because of too high weed pressure”
e1“the main crop oat was sown in four different tillage systems”
Claim · model-written summary
The weed pressure in the disc harrow system did not differ significantly from the plough system
- Taxon
- oatAvena sativae1
- Treatment
- disc harrowe0
- Outcome
- weed pressuree0
- Direction
- no_changeinferrede0
- Comparator
- plough systeme0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The weed pressure in the disc harrow – system differed not significantly from the plough system”
e1“the main crop oat was sown in four different tillage systems”
Claim · model-written summary
Green manure treatment had no significant effect on yield
- Taxon
- oatAvena sativae1
- Treatment
- green manure treatmente0
- Outcome
- yielde0
- Direction
- no_changeinferrede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Concerning yield there were no significant differences regarding green manure treatment”
e1“the main crop oat was sown in four different tillage systems”
Claim · model-written summary
The plough treatments had an overall low weed pressure
- Taxon
- oatAvena sativae1
- Treatment
- ploughe0
- Outcome
- weed pressuree0
- Qualifier
- overall lowe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In the plough – treatments there was an overall low weed pressure”
e1“the main crop oat was sown in four different tillage systems”
Claim · model-written summary
Vicia sativa with disc harrow gave oat yields of 56.2 dt/ha, similar to 53.9 dt/ha with plough
- Taxon
- oatAvena sativae0
- Treatment
- V. sativa x disc harrowe0
- Outcome
- oat yieldse0
- Direction
- similare0
- Value
- 56.2 dt ha-1e0
- Qualifier
- 53.9 dt ha-1e0
- Comparator
- V. sativa x ploughe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“only green manure species Vicia sativa resulted in similar oat yields compared to the plough treatments (V. sativa x disc harrow 56.2 dt ha-1, V. sativa x plough 53.9 dt ha-1)”
The same questions in other papers
(1S)-isoindoline-1-carboxylic acid · yield · Avena sativa (oats)Positive and negative results
1 paper in the same direction as this paper · 1 reporting no difference from an alternative
- positive
- negative
(1S)-isoindoline-1-carboxylic acid · weed · Avena sativa (oats)Positive and negative results
1 paper in the same direction as this paper · 1 in the opposite direction
- positive
- no effect
Vicia sativa · yield · Avena sativa (oats)Positive and negative results
6 in the opposite direction
- positive
- positive
- positive
3 papers more in this group
See all 7 papers →Vicia sativa · weed · Avena sativa (oats)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.