Abstract
Allelochemicals cause yield differences under various ecosystems worldwide. Studies were conducted at the National Crops Resources Research Institute, Namulonge, Uganda during 2016 to investigate allelopathic properties of bioactive compounds in upland rice (NERICA 1), Desmodium uncinatum, Zea mays (LONGE 6H) and Mucuna pruriens root leachates. Studies involved pot screening, equal compartment agar experiments, germination tests and growth of potted plants. Results under the pot study indicated that maize, rice and mucuna leachates significantly (P ≤ 0.05), reduced root lengths (49%-63%), plant heights (48%-66%) and biomass (63%-75%) for Ageratum conyzoides, Bidens pilosa and Gallinsoga. parviflora weeds. G. parviflora root growth was reduced (20%-41%) and stem growth declined (19%-42%) when maize, rice and mucuna leachates were applied in the equal compartment agar study. Increased leachate concentrations (25%-75%) significantly (P ≤ 0.05), increased the mean germination time (0.4-2.8 days) for mucuna, desmodium, rice and maize as seed germination indices (SGI) were reduced (1.3%-49%). Potted mucuna, maize and desmodium reduced (1.3%-49%) rice root length. Potting mucuna with maize reduced (32%) mucuna leaf width while desmodium growth parameters were reduced (49%-64%) when potted with maize and mucuna. Potting maize with mucuna or desmodium increased the maize leaf length (18%) and SGI (25). Application of higher (25%-75%) rice/maize leachate concentrations similarly increased the maize leaf length (31%) and SGI (119). Allelopathic properties affect seed germination, crop growth and development, and characterise ecosystems age structures. Strategic management of crops under allelopathic ecosystems is critical.
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Claims 14
Claim · model-written summary
Maize, rice and mucuna leachates reduced root lengths of Ageratum conyzoides, Bidens pilosa and Gallinsoga parviflora by 49%-63%.
- Taxon
- Ageratum conyzoides, Bidens pilosa and Gallinsoga. parviflora weedse0
- Treatment
- maize, rice and mucuna leachatese0
- Outcome
- root lengthse0
- Direction
- reducede0
- Value
- 49%-63%e0
Not reportedComparator
Verbatim
e0“maize, rice and mucuna leachates significantly (P ≤ 0.05), reduced root lengths (49%-63%), plant heights (48%-66%) and biomass (63%-75%) for Ageratum conyzoides, Bidens pilosa and Gallinsoga. parviflora weeds”
Claim · model-written summary
Maize, rice and mucuna leachates reduced plant heights of the weeds by 48%-66%.
- Taxon
- Ageratum conyzoides, Bidens pilosa and Gallinsoga. parviflora weedse0
- Treatment
- maize, rice and mucuna leachatese0
- Outcome
- plant heightse0
- Direction
- reducede0
- Value
- 48%-66%e0
Not reportedComparator
Verbatim
e0“maize, rice and mucuna leachates significantly (P ≤ 0.05), reduced root lengths (49%-63%), plant heights (48%-66%) and biomass (63%-75%) for Ageratum conyzoides, Bidens pilosa and Gallinsoga. parviflora weeds”
Claim · model-written summary
Maize, rice and mucuna leachates reduced biomass of the weeds by 63%-75%.
- Taxon
- Ageratum conyzoides, Bidens pilosa and Gallinsoga. parviflora weedse0
- Treatment
- maize, rice and mucuna leachatese0
- Outcome
- biomasse0
- Direction
- reducede0
- Value
- 63%-75%e0
Not reportedComparator
Verbatim
e0“maize, rice and mucuna leachates significantly (P ≤ 0.05), reduced root lengths (49%-63%), plant heights (48%-66%) and biomass (63%-75%) for Ageratum conyzoides, Bidens pilosa and Gallinsoga. parviflora weeds”
Claim · model-written summary
Maize, rice and mucuna leachates reduced root growth of G. parviflora by 20%-41% in the equal compartment agar study.
- Taxon
- G. parviflorae1
- Treatment
- maize, rice and mucuna leachatese1
- Outcome
- root growthe1
- Direction
- reducede1
- Value
- 20%-41%e1
Not reportedComparator
Verbatim
e1“G. parviflora root growth was reduced (20%-41%) and stem growth declined (19%-42%) when maize, rice and mucuna leachates were applied in the equal compartment agar study”
Claim · model-written summary
Maize, rice and mucuna leachates declined stem growth of G. parviflora by 19%-42% in the equal compartment agar study.
- Taxon
- G. parviflorae1
- Treatment
- maize, rice and mucuna leachatese1
- Outcome
- stem growthe1
- Direction
- declinede1
- Value
- 19%-42%e1
Not reportedComparator
Verbatim
e1“G. parviflora root growth was reduced (20%-41%) and stem growth declined (19%-42%) when maize, rice and mucuna leachates were applied in the equal compartment agar study”
Claim · model-written summary
Increased leachate concentrations (25%-75%) increased mean germination time by 0.4-2.8 days for mucuna, desmodium, rice and maize.
- Taxon
- mucuna, desmodium, rice and maize
Oryza sativa
Zea mays
Mucuna
Desmodiume2 - Treatment
- leachate concentrations (25%-75%)e2
- Outcome
- mean germination timee2
- Direction
- increasede2
- Value
- 0.4-2.8 dayse2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“Increased leachate concentrations (25%-75%) significantly (P ≤ 0.05), increased the mean germination time (0.4-2.8 days) for mucuna, desmodium, rice and maize as seed germination indices (SGI) were reduced (1.3%-49%)”
Claim · model-written summary
Increased leachate concentrations reduced seed germination indices by 1.3%-49% for mucuna, desmodium, rice and maize.
- Taxon
- mucuna, desmodium, rice and maizeOryza sativaZea maysMucunaDesmodiume2
- Treatment
- leachate concentrations (25%-75%)e2
- Outcome
- seed germination indices (SGI)e2
- Direction
- reducede2
- Value
- 1.3%-49%e2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“Increased leachate concentrations (25%-75%) significantly (P ≤ 0.05), increased the mean germination time (0.4-2.8 days) for mucuna, desmodium, rice and maize as seed germination indices (SGI) were reduced (1.3%-49%)”
Claim · model-written summary
Potted mucuna, maize and desmodium reduced rice root length by 1.3%-49%.
- Taxon
- riceOryza sativae3
- Treatment
- Potted mucuna, maize and desmodiume3
- Outcome
- rice root lengthe3
- Direction
- reducede3
- Value
- 1.3%-49%e3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e3“Potted mucuna, maize and desmodium reduced (1.3%-49%) rice root length”
Claim · model-written summary
Potting mucuna with maize reduced mucuna leaf width by 32%.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e4“Potting mucuna with maize reduced (32%) mucuna leaf width while desmodium growth parameters were reduced (49%-64%) when potted with maize and mucuna”
Claim · model-written summary
Potting desmodium with maize and mucuna reduced desmodium growth parameters by 49%-64%.
- Treatment
- potted with maize and mucunae4
- Outcome
- desmodium growth parameterse4
- Direction
- reducede4
- Value
- 49%-64%e4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e4“Potting mucuna with maize reduced (32%) mucuna leaf width while desmodium growth parameters were reduced (49%-64%) when potted with maize and mucuna”
Claim · model-written summary
Potting maize with mucuna or desmodium increased maize leaf length by 18%.
- Treatment
- Potting maize with mucuna or desmodiume5
- Outcome
- maize leaf lengthe5
- Direction
- increasede5
- Value
- 18%e5
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e5“Potting maize with mucuna or desmodium increased the maize leaf length (18%) and SGI (25)”
Claim · model-written summary
Potting maize with mucuna or desmodium increased maize seed germination index to 25.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e5“Potting maize with mucuna or desmodium increased the maize leaf length (18%) and SGI (25)”
Claim · model-written summary
Higher rice/maize leachate concentrations increased maize leaf length by 31%.
- Treatment
- rice/maize leachate concentrationse6
- Outcome
- maize leaf lengthe6
- Direction
- increasede6
- Value
- 31%e6
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e6“Application of higher (25%-75%) rice/maize leachate concentrations similarly increased the maize leaf length (31%) and SGI (119)”
Claim · model-written summary
Higher rice/maize leachate concentrations increased maize seed germination index to 119.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e6“Application of higher (25%-75%) rice/maize leachate concentrations similarly increased the maize leaf length (31%) and SGI (119)”
The same questions in other papers
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- positive
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See all 35 papers →Zea mays · growth · Oryza sativa (rice)Results agree
2 papers in the same direction as this paper
- 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.