Abstract
Three different biocide treatments: fumigation, fungicide and nematicide were used to determine what proportion of the early growth response following three different rotation breaks (pasture, crop and bare fallow) was associated with a reduction in populations of detrimental fungi and nematodes in the soil. Cane plants were examined 54 days after planting into soil that had been under the different breaks for 54 months. Each of the breaks had a positive effect on % bud germination and sett root growth, parameters associated with plant establishment. The biocide treatments suggested that detrimental fungi in continual sugarcane (plough-out/re-plant or PO/RP), and following the pasture break, but not following the crop or bare fallow breaks, affected bud germination. Fumigation, fungicide and fungicide + nematicide, increased plant growth parameters associated with early growth (shoot root growth, primary shoot growth, number of secondary shoots) across all three breaks and PO/RP. These responses were attributed to the control of detrimental fungi and nematodes and to possible biocide effects on the nutrient status of the soil. Sett root growth was positively correlated with plant parameters associated with early plant growth and negatively correlated with populations of rhizosphere fungi. The results confirm that a major effect of the rotation breaks is to reduce the impact of detrimental fungi and nematodes, which affect the establishment of the cane crop.
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Claims 10
Claim · model-written summary
Pasture breaks improved cane bud germination and sett root growth.
- Taxon
- sugarcanet0
- Treatment
- pasturee1
- Outcome
- % bud germination and sett root growthe0
- Direction
- positive effecte0
Not reportedComparator
Verbatim
t0“sugarcane”
e0“Each of the breaks had a positive effect on % bud germination and sett root growth”
e1“rotation breaks (pasture, crop and bare fallow)”
Claim · model-written summary
Crop breaks improved cane bud germination and sett root growth.
- Taxon
- sugarcanet0
- Treatment
- crope1
- Outcome
- % bud germination and sett root growthe0
- Direction
- positive effecte0
Not reportedComparator
Verbatim
t0“sugarcane”
e0“Each of the breaks had a positive effect on % bud germination and sett root growth”
e1“rotation breaks (pasture, crop and bare fallow)”
Claim · model-written summary
Bare fallow breaks improved cane bud germination and sett root growth.
- Taxon
- sugarcanet0
- Treatment
- bare fallowe1
- Outcome
- % bud germination and sett root growthe0
- Direction
- positive effecte0
Not reportedComparator
Verbatim
t0“sugarcane”
e0“Each of the breaks had a positive effect on % bud germination and sett root growth”
e1“rotation breaks (pasture, crop and bare fallow)”
Claim · model-written summary
Biocide results implicated detrimental fungi in bud germination under continual sugarcane and after pasture, but not crop or bare fallow breaks.
- Taxon
- sugarcanet0
- Treatment
- biocide treatmentse0
- Interactor
- detrimental fungie0pathogen
- Outcome
- bud germinatione0
- Qualifier
- following the pasture break, but not following the crop or bare fallow breakse0
Not reportedDirection
Verbatim
t0“sugarcane”
e0“The biocide treatments suggested that detrimental fungi in continual sugarcane (plough-out/re-plant or PO/RP), and following the pasture break, but not following the crop or bare fallow breaks, affected bud germination”
Claim · model-written summary
Fumigation increased early cane growth parameters across all breaks and continual cropping.
- Taxon
- sugarcanet0
- Treatment
- Fumigatione0
- Outcome
- shoot root growth, primary shoot growth, number of secondary shootse0
- Direction
- increasede0
Not reportedComparator
Verbatim
t0“sugarcane”
e0“Fumigation, fungicide and fungicide + nematicide, increased plant growth parameters associated with early growth (shoot root growth, primary shoot growth, number of secondary shoots) across all three breaks and PO/RP”
Claim · model-written summary
Fungicide increased early cane growth parameters across all breaks and continual cropping.
- Taxon
- sugarcanet0
- Treatment
- fungicidee0
- Outcome
- shoot root growth, primary shoot growth, number of secondary shootse0
- Direction
- increasede0
Not reportedComparator
Verbatim
t0“sugarcane”
e0“Fumigation, fungicide and fungicide + nematicide, increased plant growth parameters associated with early growth (shoot root growth, primary shoot growth, number of secondary shoots) across all three breaks and PO/RP”
Claim · model-written summary
Fungicide plus nematicide increased early cane growth parameters across all breaks and continual cropping.
- Taxon
- sugarcanet0
- Treatment
- fungicide + nematicidee0
- Outcome
- shoot root growth, primary shoot growth, number of secondary shootse0
- Direction
- increasede0
Not reportedComparator
Verbatim
t0“sugarcane”
e0“Fumigation, fungicide and fungicide + nematicide, increased plant growth parameters associated with early growth (shoot root growth, primary shoot growth, number of secondary shoots) across all three breaks and PO/RP”
Claim · model-written summary
Sett root growth correlated positively with early cane growth parameters.
Verbatim
t0“sugarcane”
e0“Sett root growth was positively correlated with plant parameters associated with early plant growth”
Claim · model-written summary
Sett root growth correlated negatively with rhizosphere fungal populations.
Verbatim
t0“sugarcane”
e0“Sett root growth was positively correlated with plant parameters associated with early plant growth and negatively correlated with populations of rhizosphere fungi”
Claim · model-written summary
The authors conclude that breaks chiefly reduce the impact of detrimental fungi and nematodes on cane establishment.
Verbatim
t0“sugarcane”
e0“a major effect of the rotation breaks is to reduce the impact of detrimental fungi and nematodes, which affect the establishment of the cane crop”
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