Abstract
Plants of broccoli, Brassica oleracea var. italica, were grown in weighing lysimeters and exposed to five soil water regimes. These regimes restored soil water to field capacity at 88% of available water for the wet treatment, 60% for the medium and 32% for the dry. In the wet–dry and dry–wet regimes, water depletion levels were changed at time of head formation. Soil water stress imposed prior to heading reduced plant size, but yield of marketable heads was not significantly reduced from that of plants grown in the wet regime when an adequate water supply was maintained after heading. Yield of marketable heads was least in the dry and wet–dry regimes and intermediate in the medium regime. Plants in the dry–wet regime did not consume as much water as those in the wet regime during the period from heading to harvest. In maritime areas which do not normally experience excessively high temperatures, withholding irrigation until heads begin to form can be recommended, provided the soil type is capable of retaining moisture and is at field capacity at planting.
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Claims 6
Claim · model-written summary
Soil water stress imposed before heading reduced broccoli plant size.
- Taxon
- broccoli
Brassica oleracea var. italicae0 - Treatment
- Soil water stress imposed prior to headinge1
- Outcome
- plant sizee1
- Direction
- reducede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Plants of broccoli, Brassica oleracea var. italica, were grown in weighing lysimeters and exposed to five soil water regimes”
e1“Soil water stress imposed prior to heading reduced plant size, but yield of marketable heads was not significantly reduced from that of plants grown in the wet regime when an adequate water supply was maintained after heading”
Claim · model-written summary
Soil water stress before heading did not significantly reduce marketable head yield relative to the wet regime when water was adequate after heading.
- Taxon
- broccoliBrassica oleracea var. italicae0
- Treatment
- Soil water stress imposed prior to headinge1
- Outcome
- yield of marketable headse1
- Direction
- not significantly reducede1
- Comparator
- wet regimee1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Plants of broccoli, Brassica oleracea var. italica, were grown in weighing lysimeters and exposed to five soil water regimes”
e1“Soil water stress imposed prior to heading reduced plant size, but yield of marketable heads was not significantly reduced from that of plants grown in the wet regime when an adequate water supply was maintained after heading”
Claim · model-written summary
Marketable head yield was lowest in the dry and wet–dry regimes.
- Taxon
- broccoliBrassica oleracea var. italicae0
- Treatment
- dry and wet–dry regimese2
- Outcome
- Yield of marketable headse2
- Direction
- leaste2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Plants of broccoli, Brassica oleracea var. italica, were grown in weighing lysimeters and exposed to five soil water regimes”
e2“Yield of marketable heads was least in the dry and wet–dry regimes and intermediate in the medium regime”
Claim · model-written summary
Marketable head yield was intermediate in the medium regime.
- Taxon
- broccoliBrassica oleracea var. italicae0
- Treatment
- medium regimee2
- Outcome
- Yield of marketable headse2
- Direction
- intermediatee2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Plants of broccoli, Brassica oleracea var. italica, were grown in weighing lysimeters and exposed to five soil water regimes”
e2“Yield of marketable heads was least in the dry and wet–dry regimes and intermediate in the medium regime”
Claim · model-written summary
Broccoli in the dry–wet regime consumed less water than in the wet regime from heading to harvest.
- Taxon
- broccoliBrassica oleracea var. italicae0
- Treatment
- dry–wet regimee3
- Outcome
- consume as much watere3
- Direction
- lowerinferrede3
- Comparator
- wet regimee3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Plants of broccoli, Brassica oleracea var. italica, were grown in weighing lysimeters and exposed to five soil water regimes”
e3“Plants in the dry–wet regime did not consume as much water as those in the wet regime during the period from heading to harvest”
Claim · model-written summary
Withholding irrigation until heads begin to form can be recommended for broccoli in maritime areas, if the soil retains moisture and is at field capacity at planting.
- Taxon
- broccoliBrassica oleracea var. italicae0
- Outcome
- withholding irrigation until heads begin to forme4
- Setting
- In maritime arease5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Plants of broccoli, Brassica oleracea var. italica, were grown in weighing lysimeters and exposed to five soil water regimes”
e4“withholding irrigation until heads begin to form can be recommended, provided the soil type is capable of retaining moisture and is at field capacity at planting”
e5“In maritime areas which do not normally experience excessively high temperatures”
The same questions in other papers
drought · growth · Brassica oleracea (wild cabbage)Results differ
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- positive
- positive
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1 reporting no difference from an alternative
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in vitro · quality: postharvest · Brassica oleracea (wild cabbage)Positive and negative results
1 paper in the same direction as this paper · 1 in the opposite direction
- positive
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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.