Abstract
A field experiment was carried out during rainy season (kharif) 2017 at New Delhi to evaluate the competition among the brown manuring species, Sesbania bispinosa and Crotalaria juncea, weeds and maize in a coculture/mixed stand. Results showed that maize was the most competitive with significantly higher growth rates at 25 and 35 d after sowing (DAS). The order of competitiveness was: maize > Sesbania > Crotalaria > weeds. After knocking down Sesbania and Crotalaria, maize continued to be superior competitor than weeds. In terms of weed suppression (~weed control index 91.9%), mixed stand of Sesbania bispinosa (12.5 kg seed ha-1) + Crotalaria juncea (12.5 kg seed ha-1) after knocking down at 35 DAS using 2, 4-D was most superior and similar to weed-free control. But, when Sesbania + Crotalaria was knocked down at 25 DAS, it resulted in greater maize plant height (189.2 cm), crop biomass (692.1 g m-2), total N uptake (123.4 kg ha-1) and cob yield (6.94 t ha-1) than at 35 DAS. Therefore, co-culture of brown manure involving a pre-emergence herbicide was more competitive against weeds and the dead residue proved to be stimulative to maize crop for boosting growth and yield.
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Claims 8
Claim · model-written summary
Maize had significantly higher growth rates at 25 and 35 DAS and was the strongest competitor.
Zea maysOrganisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“maize was the most competitive with significantly higher growth rates at 25 and 35 d after sowing (DAS). The order of competitiveness was: maize > Sesbania > Crotalaria > weeds.”
e1“at New Delhi”
Claim · model-written summary
Maize remained a superior competitor to weeds after brown manure knockdown.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“After knocking down Sesbania and Crotalaria, maize continued to be superior competitor than weeds.”
Claim · model-written summary
The mixed Sesbania and Crotalaria stand knocked down at 35 DAS gave 91.9% weed control index, similar to weed-free control.
- Treatment
- mixed stand of Sesbania bispinosa (12.5 kg seed ha-1) + Crotalaria juncea (12.5 kg seed ha-1)e0
- Interactor
- weedse1weed
- Second interactor
- Sesbania bispinosa
Sesbania bispinosae0other - Outcome
- weed suppressione1
- Direction
- most superiore0
- Value
- 91.9%e1
- Comparator
- weed-free controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“mixed stand of Sesbania bispinosa (12.5 kg seed ha-1) + Crotalaria juncea (12.5 kg seed ha-1) after knocking down at 35 DAS using 2, 4-D was most superior and similar to weed-free control.”
e1“weed suppression (~weed control index 91.9%)”
t0“Maize”
Claim · model-written summary
Knockdown at 25 DAS gave greater maize plant height than 35 DAS, reaching 189.2 cm.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“when Sesbania + Crotalaria was knocked down at 25 DAS, it resulted in greater maize plant height (189.2 cm), crop biomass (692.1 g m-2), total N uptake (123.4 kg ha-1) and cob yield (6.94 t ha-1) than at 35 DAS.”
Claim · model-written summary
Knockdown at 25 DAS gave greater maize biomass than 35 DAS, reaching 692.1 g m-2.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“when Sesbania + Crotalaria was knocked down at 25 DAS, it resulted in greater maize plant height (189.2 cm), crop biomass (692.1 g m-2), total N uptake (123.4 kg ha-1) and cob yield (6.94 t ha-1) than at 35 DAS.”
Claim · model-written summary
Knockdown at 25 DAS gave greater maize nitrogen uptake than 35 DAS, reaching 123.4 kg ha-1.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“when Sesbania + Crotalaria was knocked down at 25 DAS, it resulted in greater maize plant height (189.2 cm), crop biomass (692.1 g m-2), total N uptake (123.4 kg ha-1) and cob yield (6.94 t ha-1) than at 35 DAS.”
Claim · model-written summary
Knockdown at 25 DAS gave greater maize cob yield than 35 DAS, reaching 6.94 t ha-1.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“when Sesbania + Crotalaria was knocked down at 25 DAS, it resulted in greater maize plant height (189.2 cm), crop biomass (692.1 g m-2), total N uptake (123.4 kg ha-1) and cob yield (6.94 t ha-1) than at 35 DAS.”
Claim · model-written summary
The authors concluded brown manure co-culture and residue suppressed weeds and stimulated maize growth and yield.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“co-culture of brown manure involving a pre-emergence herbicide was more competitive against weeds and the dead residue proved to be stimulative to maize crop for boosting growth and yield.”
The same questions in other papers
Sesbania bispinosa · weed · Zea mays (maize)Results agree
1 paper in the same direction as this paper
- positive
Crotalaria juncea · weed · Zea mays (maize)Results agree
4 papers in the same direction as this paper
- positive
- positive
- positive
1 paper more in this group
See all 5 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.