Abstract
Two trials were conducted on a Templeton silt loam soil at Lincoln University, New Zealand (43 ° 38' S, 172 o 28' E.) in 2007/08. The aim was to compare the competitive ability of different pea canopy architectures as influenced by genotype, population, sowing date and their interaction as a means of low input weed control strategy. The first experiment had three sowing dates, two pea genotypes and two herbicide treatments. Experiment 2 treatments were a factorial combination of four pea populations and three sown artificial weed populations. A significant sowing date x pea genotype interaction showed that in the August sowing genotype had no effect on seed yield. However, in September sown plots Pro 7035 yielded 559 g m -2 , which was 40% more than Midichi, and in the October sowing, the difference was 87% more. Herbicide-sprayed peas produced 19% more seed (508 g m -2 ) than the unsprayed plants. When no weeds were sown, the highest pea total dry matter (TDM) of 1,129 g m -2 occurred at 200 plants m -2 . This was more than twice (513 g m -2 ) the yield of the lowest population (50 plants m -2 ). There was distinct variation in the weed spectrum over time. Coronopus didymus, Stellaria media and Lolium spp were present in relatively large numbers throughout the season. Some weeds only occurred late in the season meaning they could be successfully controlled by early sowing. It could be concluded that it is possible to obtain high pea yields by using the right sowing date and appropriate seed rate as a means of low input weed management strategy.
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Claims 11
Claim · model-written summary
In August sowing, pea genotype did not affect seed yield.
- Taxon
- pea
Lathyrus oleraceust0 - Outcome
- seed yielde0
- Direction
- no effecte0
- Qualifier
- August sowinge0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“in the August sowing genotype had no effect on seed yield”
t0“pea”
Claim · model-written summary
September-sown Pro 7035 yielded 559 g m -2, 40% more than Midichi.
- Taxon
- peaLathyrus oleraceust0
- Material
- Pro 7035e0
- Outcome
- yieldede0
- Direction
- moree0
- Value
- 559 g m -2e0
- Qualifier
- 40%e0
- Comparator
- Midichie0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“in September sown plots Pro 7035 yielded 559 g m -2 , which was 40% more than Midichi”
t0“pea”
Claim · model-written summary
October-sown Pro 7035 exceeded Midichi yield by 87%.
- Taxon
- peaLathyrus oleraceust0
- Material
- Pro 7035t1
- Outcome
- differencee0
- Direction
- moree0
- Value
- 87%e0
- Comparator
- Midichit1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“in the October sowing, the difference was 87% more”
t0“pea”
t1“Pro 7035 yielded 559 g m -2 , which was 40% more than Midichi”
Claim · model-written summary
Herbicide-sprayed peas produced 508 g m -2 seed, 19% more than unsprayed plants.
- Taxon
- peasLathyrus oleraceuse0
- Treatment
- Herbicide-sprayede0
- Outcome
- seede0
- Direction
- moree0
- Value
- 508 g m -2e0
- Qualifier
- 19%e0
- Comparator
- unsprayed plantse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Herbicide-sprayed peas produced 19% more seed (508 g m -2 ) than the unsprayed plants”
Claim · model-written summary
Without sown weeds, 200 plants m -2 produced the highest pea dry matter of 1,129 g m -2.
- Taxon
- peaLathyrus oleraceuse0
- Treatment
- 200 plants m -2e0
- Outcome
- pea total dry matter (TDM)e0
- Direction
- higheste0
- Value
- 1,129 g m -2e0
- Qualifier
- When no weeds were sowne0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“When no weeds were sown, the highest pea total dry matter (TDM) of 1,129 g m -2 occurred at 200 plants m -2”
Claim · model-written summary
The lowest density, 50 plants m -2, yielded 513 g m -2 dry matter.
- Taxon
- peaLathyrus oleraceust0
- Outcome
- yield of the lowest populatione0
- Direction
- loweste0
- Value
- 513 g m -2e0
- Qualifier
- 50 plants m -2e0
Not reportedMaterial
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“This was more than twice (513 g m -2 ) the yield of the lowest population (50 plants m -2 )”
t0“pea”
Claim · model-written summary
The weed spectrum varied over time.
- Taxon
- peaLathyrus oleraceust0
- Outcome
- variation in the weed spectrum over timee0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“There was distinct variation in the weed spectrum over time”
t0“pea”
Claim · model-written summary
Coronopus didymus, Stellaria media and Lolium spp were abundant throughout the season.
- Taxon
- peaLathyrus oleraceust0
- Interactor
- Coronopus didymus
Lepidium didymume0weed - Second interactor
- Stellaria media
Stellaria mediae0weed - Outcome
- present in relatively large numbers throughout the seasone0
- Qualifier
- Lolium sppe0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Coronopus didymus, Stellaria media and Lolium spp were present in relatively large numbers throughout the season”
t0“pea”
Claim · model-written summary
Some weeds emerged only late in the season.
- Taxon
- peaLathyrus oleraceust0
- Outcome
- weeds only occurred late in the seasone0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Some weeds only occurred late in the season”
t0“pea”
Claim · model-written summary
Early sowing could control weeds that occur late.
- Taxon
- peaLathyrus oleraceust0
- Outcome
- successfully controlled by early sowinge0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Some weeds only occurred late in the season meaning they could be successfully controlled by early sowing”
t0“pea”
Claim · model-written summary
Appropriate sowing date and seed rate can deliver high pea yields with low input weed management.
- Taxon
- peaLathyrus oleraceuse0
- Outcome
- obtain high pea yields by using the right sowing date and appropriate seed rate as a means of low input weed management strategye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“it is possible to obtain high pea yields by using the right sowing date and appropriate seed rate as a means of low input weed management strategy”
The same questions in other papers
herbicide · yield · Lathyrus oleraceus (pea)Results differ
44 papers in the same direction as this paper · 16 in the opposite direction · 1 reporting no difference from an alternative
- no effect
- negative
- no effect
58 papers more in this group
See all 62 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.