Abstract
Abstract The ground leaching technology (GLT) system was introduced in low-input farming systems in response to the withdrawal of methyl bromide from agrochemical markets and the amelioration of conventional organic amendment drawbacks in managing plant-parasitic nematodes in olericulture. The primary indicator for success in GLT system is that potent nematicidal chemicals be released through leaching by water, while in conventional organic amendments potent chemicals are released through microbial degradation. Due to widespread availability of cabbage (Brassica oleracea) leaves in local markets as a waste, the material would be readily available for use in GLT systems in peri-urban agriculture. The objective of the study was to determine whether crude extracts of B. oleracea leaves were suitable for use in GLT system for managing the root-knot (Meloidogyne spp.) nematodes and improving growth of tomato (Solanum lycorpersicum). A 2×2×2 factorial experiment, with the main factors being Bacillus species, crude extracts of B. oleracea leaves and Meloidogyne incognita, was conducted over two seasons under microplot conditions. At harvest, Bacillus×Brassica×nematode interaction reduced final nematode population densities, fresh fruit yield, dry shoot mass, plant height and stem diameter, while Bacillus× Brassica interaction increased tomato growth variables. Incidentally, Brassica alone reduced the productivity of tomato. Overall, the efficacy of crude extracts of B. oleracea leaves in nematode suppression and tomato productivity was dependent upon microbial activities and therefore, the material was not suitable for use in GLT systems.
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Claims 5
Claim · model-written summary
The three-factor interaction reduced final nematode densities.
- Taxon
- tomato
Solanum lycopersicume1 - Treatment
- Bacillus×Brassica×nematode interactione0
- Outcome
- final nematode population densitiese0
- Direction
- reducede0
Not reportedInteractorComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e0“At harvest, Bacillus×Brassica×nematode interaction reduced final nematode population densities, fresh fruit yield, dry shoot mass, plant height and stem diameter”
t0“Brassica oleracea”
e1“improving growth of tomato (Solanum lycorpersicum)”
Claim · model-written summary
The three-factor interaction reduced fruit yield, shoot mass, height and stem diameter.
- Taxon
- tomato
Solanum lycopersicume1 - Treatment
- Bacillus×Brassica×nematode interactione0
- Outcome
- fresh fruit yield, dry shoot mass, plant height and stem diametere0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e0“At harvest, Bacillus×Brassica×nematode interaction reduced final nematode population densities, fresh fruit yield, dry shoot mass, plant height and stem diameter”
e1“improving growth of tomato (Solanum lycorpersicum)”
Claim · model-written summary
The Bacillus and Brassica interaction increased tomato growth variables.
- Taxon
- tomato
Solanum lycopersicume1 - Treatment
- Bacillus× Brassica interactione0
- Outcome
- tomato growth variablese0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e0“Bacillus× Brassica interaction increased tomato growth variables.”
e1“improving growth of tomato (Solanum lycorpersicum)”
Claim · model-written summary
Brassica alone reduced tomato productivity.
- Taxon
- tomato
Solanum lycopersicume0 - Treatment
- Brassica alonee0
- Outcome
- productivity of tomatoe0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e0“Brassica alone reduced the productivity of tomato.”
Claim · model-written summary
The authors concluded cabbage extracts were unsuitable for GLT because efficacy depended on microbial activity.
- Taxon
- tomato
Solanum lycopersicume1 - Treatment
- crude extracts of B. oleracea leavese0
- Outcome
- not suitable for use in GLT systemse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e0“Overall, the efficacy of crude extracts of B. oleracea leaves in nematode suppression and tomato productivity was dependent upon microbial activities and therefore, the material was not suitable for use in GLT systems.”
e1“improving growth of tomato (Solanum lycorpersicum)”
The same questions in other papers
Brassica · growth · Solanum lycopersicum (tomato)Results agree
1 paper in the same direction as this paper
- positive
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.