Abstract
Sustainable biodiesel production from sunflower is largely dependent on farm input minimization. In that respect, rotation with cover crops is fundamental for yield increase, as well as for controlling soil erosion and degradation, ground water pollution, and maintaining acceptable organic matter levels in the topsoil. A 3year field experiment with sunflower was conducted in Trikala area (Thessaly, central Greece) in the years 2007 through 2009. The study soil was a calcareous sandy loam one. A great importance of crop rotation with cover crop (Pisum sativum) was found on final seed yield in all cases particularly due to the drastic increase of the basic N uptake. The recovery fraction was about 30% for control plots and in case of pisum was fluctuated up to 80%. The sunseed yield fluctuated from 2.5 to 3 t/ha in the control plots depending on the Napplication and from 4.32 to 5.90 t/ha for pisum incorporation, respectively. The NUE was about 18 kg/kg (confirming relevant previous results cited in the literature).
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Claims 7
Claim · model-written summary
Pea cover crop rotation increased final sunflower seed yield.
- Taxon
- Sunflower
Helianthus annuust0 - Treatment
- crop rotation with cover crop (Pisum sativum)e0
- Interactor
- Pisum sativum
Lathyrus oleraceuse0other - Outcome
- final seed yielde0
- Direction
- increasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“A great importance of crop rotation with cover crop (Pisum sativum) was found on final seed yield in all cases particularly due to the drastic increase of the basic N uptake.”
t0“Sunflower”
Claim · model-written summary
Pea cover crop rotation drastically increased basic N uptake.
- Taxon
- SunflowerHelianthus annuust0
- Treatment
- crop rotation with cover crop (Pisum sativum)e0
- Interactor
- Pisum sativumLathyrus oleraceuse0other
- Outcome
- basic N uptakee0
- Direction
- increasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“crop rotation with cover crop (Pisum sativum) was found on final seed yield in all cases particularly due to the drastic increase of the basic N uptake.”
t0“Sunflower”
Claim · model-written summary
The recovery fraction was about 30% in control plots.
- Taxon
- SunflowerHelianthus annuust0
- Outcome
- recovery fractione0
- Value
- 30%e0
- Qualifier
- control plotse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The recovery fraction was about 30% for control plots”
t0“Sunflower”
Claim · model-written summary
The recovery fraction reached up to 80% with pisum.
- Taxon
- SunflowerHelianthus annuust0
- Treatment
- pisume0
- Outcome
- recovery fractione1
- Direction
- up toe0
- Value
- 80%e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“in case of pisum was fluctuated up to 80%”
e1“The recovery fraction was about 30% for control plots”
t0“Sunflower”
Claim · model-written summary
Control sunflower seed yield ranged from 2.5 to 3 t/ha depending on N application.
- Taxon
- SunflowerHelianthus annuust0
- Outcome
- sunseed yielde0
- Value
- 2.5 to 3 t/hae0
- Qualifier
- depending on the Napplicatione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The sunseed yield fluctuated from 2.5 to 3 t/ha in the control plots depending on the Napplication”
t0“Sunflower”
Claim · model-written summary
Sunflower seed yield with pisum incorporation ranged from 4.32 to 5.90 t/ha.
- Taxon
- SunflowerHelianthus annuust0
- Treatment
- pisum incorporatione0
- Outcome
- sunseed yielde1
- Value
- 4.32 to 5.90 t/hae0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“from 4.32 to 5.90 t/ha for pisum incorporation”
e1“The sunseed yield fluctuated”
t0“Sunflower”
Claim · model-written summary
Sunflower nitrogen use efficiency was about 18 kg/kg.
- Taxon
- SunflowerHelianthus annuust0
- Outcome
- NUEe0
- Value
- 18 kg/kge0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The NUE was about 18 kg/kg”
t0“Sunflower”
The same questions in other papers
Lathyrus oleraceus · yield · Helianthus annuus (common sunflower)Results agree
2 papers in the same direction as this paper
- positive
- positive
cover crop · yield · Helianthus annuus (common sunflower)Positive and negative results
3 papers in the same direction as this paper · 2 in the opposite direction
- negative
- no effect
- positive
2 papers more in this group
See all 6 papers →rotation · yield · Helianthus annuus (common sunflower)Positive and negative results
7 papers in the same direction as this paper · 2 in the opposite direction
- no effect
- negative
- positive
6 papers more in this group
See all 10 papers →cover crop · nutrient: content · Helianthus annuus (common sunflower)Results agree
1 paper in the same direction as this paper
- positive
rotation · nutrient: content · Helianthus annuus (common sunflower)Results agree
2 papers in the same direction as this paper
- positive
- 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.