Abstract
Summary One of the main objectives of using plastic mulch is to increase soil temperature. However, under high temperature conditions some plastic mulches warm the soil to temperatures that might be harmful to plant growth. A 2-year (2002-03) study was carried out in northern Hungary (Gödöllö) to determine the optimal colour of the plastic mulch for sweet pepper ( Capsicum annuum ) under specific, unsettled climatic circumstances, in some years with high temperature conditions. The increase of soil temperature caused by certain mulches was the same in both years. In the case of light coloured mulches (clear, violet, light green) the soil temperature was 2.5-2.9°C higher than in the case of the un-mulched control. The dark coloured mulches (black, dark green, red) caused 1.4-2.1°C soil temperature increase compared to the un-mulched control. The rate of soil temperature values optimal for sweet pepper (between 20 and 30°C) was the highest in the case of dark coloured mulches. Due to warmer weather in 2003 the soil warmed up under the clear and violet mulches extremely, which had a harmful effect on vegetative growth and yield. According to the higher soil temperatures mulched treatments produced higher yields than the un-mulched treatment except for the clear mulch in 2003. The use of dark coloured mulches is the safest solution in the examined region because even in the case of high air temperature and solar radiation the soil does not warm to a harmful degree.
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Claims 6
Claim · model-written summary
Light mulches raised soil temperature 2.5–2.9°C over bare soil.
- Taxon
- sweet pepper
Capsicum annuumt0 - Treatment
- light coloured mulches (clear, violet, light green)e0
- Outcome
- soil temperaturee0
- Direction
- highere0
- Value
- 2.5-2.9°Ce0
- Comparator
- un-mulched controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e0“light coloured mulches (clear, violet, light green) the soil temperature was 2.5-2.9°C higher than in the case of the un-mulched control”
t0“sweet pepper”
Claim · model-written summary
Dark mulches raised soil temperature 1.4–2.1°C over bare soil.
- Taxon
- sweet pepper
Capsicum annuumt0 - Treatment
- dark coloured mulches (black, dark green, red)e0
- Outcome
- soil temperaturee0
- Direction
- increasee0
- Value
- 1.4-2.1°Ce0
- Comparator
- un-mulched controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e0“dark coloured mulches (black, dark green, red) caused 1.4-2.1°C soil temperature increase compared to the un-mulched control”
t0“sweet pepper”
Claim · model-written summary
Dark mulches gave the highest frequency of optimal pepper soil temperatures.
- Taxon
- sweet pepper
Capsicum annuume0 - Treatment
- dark coloured mulchese0
- Outcome
- rate of soil temperature values optimal for sweet peppere0
- Direction
- higheste0
- Qualifier
- between 20 and 30°Ce0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e0“The rate of soil temperature values optimal for sweet pepper (between 20 and 30°C) was the highest in the case of dark coloured mulches”
Claim · model-written summary
Extreme soil warming under clear and violet mulch in 2003 harmed vegetative growth and yield.
- Taxon
- sweet pepper
Capsicum annuumt0 - Treatment
- clear and violet mulchese0
- Outcome
- vegetative growth and yielde0
- Direction
- harmful effecte0
- Qualifier
- 2003e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e0“Due to warmer weather in 2003 the soil warmed up under the clear and violet mulches extremely, which had a harmful effect on vegetative growth and yield”
t0“sweet pepper”
Claim · model-written summary
Mulched peppers generally yielded more than unmulched peppers except clear mulch in 2003.
- Taxon
- sweet pepper
Capsicum annuumt0 - Treatment
- mulched treatmentse0
- Outcome
- yieldse0
- Direction
- highere0
- Qualifier
- except for the clear mulch in 2003e0
- Comparator
- un-mulched treatmente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e0“mulched treatments produced higher yields than the un-mulched treatment except for the clear mulch in 2003”
t0“sweet pepper”
Claim · model-written summary
The authors recommend dark mulch as the safest option in the region.
- Taxon
- sweet pepper
Capsicum annuumt0 - Outcome
- use of dark coloured mulchese0
- Qualifier
- in the examined regione0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e0“The use of dark coloured mulches is the safest solution in the examined region because even in the case of high air temperature and solar radiation the soil does not warm to a harmful degree”
t0“sweet pepper”
The same questions in other papers
mulching · yield · Capsicum annuum (sweet pepper)Positive and negative results
34 papers in the same direction as this paper · 2 in the opposite direction
- negative
- no effect
- positive
33 papers more in this group
See all 37 papers →mulching · soil: physics · Capsicum annuum (sweet pepper)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.