Abstract
A study was conducted to determine the effects of inter-row spacing (45 and 90 cm) and plant population (40000 and 60000 plants ha-1) on weed biomass and the yield of both green and grain materials of maize plants. The experiment was set up as 2 × 2 factorial in a randomised complete block design with three replications. Plant population had no significant effects and interaction among factors was not significant on weed biomass. Narrow rows of 45 cm reduced weed biomass by 58%. Growing maize at 40000 plants ha-1 resulted in similar green cob weight regardless of inter-row spacing. Cob length decreased with increase in plant population and with wider rows. Similar grain yield was obtained regardless of inter-row spacing when maize was grown at 40000 plants ha-1, but at 60000 plants ha-1, 45 cm rows resulted in 11% higher grain yield than 90 cm rows. Increasing plant population from 40000 to 60000 plants ha-1 resulted in a 30% grain yield increase. The study demonstrated that growers could obtain higher green and/or grain yield by increasing plant population from the current practice of 40000 to 60000 plants ha-1 and through use of narrow rows. Key words: Row spacing, plant population, weed density, weed biomass, maize yield.
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Claims 9
Claim · model-written summary
Plant population had no significant effect on weed biomass.
Zea maysNot reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“maize(Zea mays L.) yield”
e0“Plant population had no significant effects and interaction among factors was not significant on weed biomass”
Claim · model-written summary
Narrow 45 cm rows reduced weed biomass by 58%.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“maize(Zea mays L.) yield”
e1“Narrow rows of 45 cm reduced weed biomass by 58%”
Claim · model-written summary
At 40000 plants ha-1, green cob weight was similar regardless of inter-row spacing.
- Treatment
- 40000 plants ha-1e2
- Outcome
- green cob weighte2
- Direction
- similare2
- Comparator
- regardless of inter-row spacinge2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“maize(Zea mays L.) yield”
e2“Growing maize at 40000 plants ha-1 resulted in similar green cob weight regardless of inter-row spacing”
Claim · model-written summary
Cob length decreased with increasing plant population.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“maize(Zea mays L.) yield”
e3“Cob length decreased with increase in plant population and with wider rows”
Claim · model-written summary
Cob length decreased with wider rows.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“maize(Zea mays L.) yield”
e3“Cob length decreased with increase in plant population and with wider rows”
Claim · model-written summary
At 40000 plants ha-1, grain yield was similar regardless of inter-row spacing.
- Treatment
- 40000 plants ha-1e4
- Outcome
- grain yielde4
- Direction
- Similare4
- Comparator
- regardless of inter-row spacinge4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“maize(Zea mays L.) yield”
e4“Similar grain yield was obtained regardless of inter-row spacing when maize was grown at 40000 plants ha-1”
Claim · model-written summary
At 60000 plants ha-1, 45 cm rows gave 11% higher grain yield than 90 cm rows.
- Treatment
- 45 cm rowse5
- Outcome
- grain yielde5
- Direction
- highere5
- Value
- 11%e5
- Qualifier
- at 60000 plants ha-1e5
- Comparator
- 90 cm rowse5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“maize(Zea mays L.) yield”
e5“at 60000 plants ha-1, 45 cm rows resulted in 11% higher grain yield than 90 cm rows”
Claim · model-written summary
Increasing plant population from 40000 to 60000 plants ha-1 increased grain yield by 30%.
- Treatment
- Increasing plant population from 40000 to 60000 plants ha-1e6
- Outcome
- grain yielde6
- Direction
- increasee6
- Value
- 30%e6
- Comparator
- from 40000e6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“maize(Zea mays L.) yield”
e6“Increasing plant population from 40000 to 60000 plants ha-1 resulted in a 30% grain yield increase”
Claim · model-written summary
Growers could obtain higher green and/or grain yield by increasing plant population from 40000 to 60000 plants ha-1 and using narrow rows.
- Treatment
- increasing plant population from the current practice of 40000 to 60000 plants ha-1 and through use of narrow rowse7
- Outcome
- obtain higher green and/or grain yielde7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“maize(Zea mays L.) yield”
e7“The study demonstrated that growers could obtain higher green and/or grain yield by increasing plant population from the current practice of 40000 to 60000 plants ha-1 and through use of narrow rows”
The same questions in other papers
density · weed · Zea mays (maize)Positive and negative results
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518 papers in the same direction as this paper · 132 in the opposite direction · 7 reporting no difference from an alternative
- no effect
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See all 658 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.