Abstract
SUMMARY A comparison was made between seedling establishment following sowing with the Mk2 dibber drill and a conventional coulter drill at three sowing occasions with both lettuce and calabrese. Different seed covering materials used to cover dibber‐drilled seed were also compared. With lettuce, the rate and uniformity of seedling emergence and the numbers of seedlings emerging were greater following sowing with the dibber drill than with the coulter drill. Seedling establishment was further improved with irrigation especially when seeds were sown with a small quantity of the hydrophillic polymer, Alcosorb, which avoided associated problems of increased soil impedance. Alcosorb was a more effective seed cover than a peat and vermiculite mix and better suited for mechanical metering. Results indicate that the dibber drill can be considered as a realistic and cheaper alternative to transplanting for establishing later‐season lettuce crops. With calabrese, however, percentage seedling emergence on all dibber‐drilled plots was lower than that on plots sown with the coulter drill. This result may have been due to seed‐coat damage caused as seeds are plunged into the soil during sowing with the dibber drill.
Abstract from the paper’s OpenAlex record, shown for indexing and research. Copyright remains with the authors or the publisher. Read at the source ↗
The text the model read, with the source record’s inline markup (italics, sub- and superscripts) rendered and its character entities decoded; quote offsets refer to the raw text.
Claims 8
Claim · model-written summary
Dibber drilling increased lettuce emergence rate, uniformity and seedling numbers over coulter drilling.
- Taxon
- lettuce
Lactuca sativae0 - Treatment
- dibber drille0
- Outcome
- rate and uniformity of seedling emergence and the numbers of seedlings emerginge0
- Direction
- greatere0
- Comparator
- coulter drille0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“With lettuce, the rate and uniformity of seedling emergence and the numbers of seedlings emerging were greater following sowing with the dibber drill than with the coulter drill”
Claim · model-written summary
Irrigation improved lettuce establishment, especially with Alcosorb.
- Taxon
- lettuceLactuca sativat0
- Treatment
- irrigatione0
- Outcome
- Seedling establishmente0
- Direction
- improvede0
- Qualifier
- especially when seeds were sown with a small quantity of the hydrophillic polymer, Alcosorbe0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Seedling establishment was further improved with irrigation especially when seeds were sown with a small quantity of the hydrophillic polymer, Alcosorb”
t0“lettuce and calabrese establishment”
Claim · model-written summary
Alcosorb avoided increased soil impedance associated with irrigation.
- Taxon
- lettuceLactuca sativat0
- Treatment
- Alcosorbe0
- Outcome
- soil impedancee0
- Direction
- avoidede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Alcosorb, which avoided associated problems of increased soil impedance”
t0“lettuce and calabrese establishment”
Claim · model-written summary
Alcosorb was a more effective seed cover than peat and vermiculite mix.
- Taxon
- lettuceLactuca sativat0
- Treatment
- Alcosorbe0
- Outcome
- more effective seed covere0
- Direction
- more effectivee0
- Comparator
- peat and vermiculite mixe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Alcosorb was a more effective seed cover than a peat and vermiculite mix”
t0“lettuce and calabrese establishment”
Claim · model-written summary
Alcosorb was better suited for mechanical metering.
- Taxon
- lettuceLactuca sativat0
- Treatment
- Alcosorbe0
- Outcome
- mechanical meteringe0
- Direction
- better suitede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Alcosorb was a more effective seed cover than a peat and vermiculite mix and better suited for mechanical metering”
t0“lettuce and calabrese establishment”
Claim · model-written summary
The dibber drill was considered a realistic and cheaper alternative to transplanting for later season lettuce establishment.
- Taxon
- lettuceLactuca sativae0
- Treatment
- dibber drille0
- Outcome
- realistic and cheaper alternative to transplantinge0
- Qualifier
- later‐season lettuce cropse0
- Comparator
- transplantinge0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the dibber drill can be considered as a realistic and cheaper alternative to transplanting for establishing later‐season lettuce crops”
Claim · model-written summary
Dibber drilling reduced calabrese seedling emergence percentage relative to coulter drilling.
Verbatim
e0“With calabrese, however, percentage seedling emergence on all dibber‐drilled plots was lower than that on plots sown with the coulter drill”
Claim · model-written summary
Seed coat damage during dibber sowing may explain lower calabrese emergence.
Verbatim
e0“This result may have been due to seed‐coat damage caused as seeds are plunged into the soil during sowing with the dibber drill”
t0“lettuce and calabrese establishment”
The same questions in other papers
transplanting · growth · Lactuca sativa (garden lettuce)Positive and negative results
7 papers in the same direction as this paper · 4 in the opposite direction
- negative
- negative
- no effect
8 papers more in this group
See all 12 papers →irrigation · growth · Lactuca sativa (garden lettuce)Positive and negative results
31 papers in the same direction as this paper · 11 in the opposite direction · 2 reporting no difference from an alternative
- no effect
- no effect
- negative
41 papers more in this group
See all 45 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.