Abstract
The objective of the present study was to evaluate the effects of crop residue covers (0.0; 4.5; 9.0; 13.5 t ha-1 millet dry matter) on water use and production of onion cultivated in no-tillage planting system (NT) as compared to conventional tillage system (CT). The study was carried out at Embrapa Hortaliças, Brazil, under the typical Savanna biome. Irrigations were performed using a sprinkle irrigation system when soil-water tension reached between 25 and 30 kPa. The experimental design was randomized blocks with three replications. Total net water depth applied to NT treatment was 19% smaller than the CT treatment, however, water savings increased to 30% for the first 30 days following seedlings transplant. Crop biomass, bulb size and yield, and rate of rotten bulbs were not significantly affected by treatments. The water productivity index increased linearly with increasing crop residue in NT conditions. Water productivity index of NT treatments with crop residue was on average 30% higher than that in the CT system (8.13 kg m-3).
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Claims 6
Claim · model-written summary
No-tillage received 19% less net water depth than conventional tillage.
- Taxon
- onion
Allium cepae0 - Treatment
- NT treatmente1
- Outcome
- Total net water depthe1
- Direction
- smallere1
- Value
- 19%e1
- Comparator
- CT treatmente1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“onion”
e1“Total net water depth applied to NT treatment was 19% smaller than the CT treatment”
Claim · model-written summary
No-tillage water savings rose to 30% during the first 30 days after transplanting.
- Taxon
- onionAllium cepae0
- Outcome
- water savingse1
- Direction
- increasede1
- Value
- 30%e1
- Qualifier
- first 30 days following seedlings transplante1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“onion”
e1“water savings increased to 30% for the first 30 days following seedlings transplant”
Claim · model-written summary
Treatments showed no statistically significant difference in biomass, bulb size, or yield.
- Taxon
- onionAllium cepae0
- Treatment
- treatmentse1
- Outcome
- Crop biomass, bulb size and yielde1
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“onion”
e1“Crop biomass, bulb size and yield, and rate of rotten bulbs were not significantly affected by treatments”
Claim · model-written summary
Treatments showed no statistically significant difference in rotten-bulb rate.
- Taxon
- onionAllium cepae0
- Treatment
- treatmentse1
- Outcome
- rate of rotten bulbse1
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“onion”
e1“Crop biomass, bulb size and yield, and rate of rotten bulbs were not significantly affected by treatments”
Claim · model-written summary
Water productivity increased linearly as residue cover increased under no-tillage.
- Taxon
- onionAllium cepae0
- Treatment
- crop residuee1
- Outcome
- water productivity indexe1
- Direction
- increasede1
- Qualifier
- NT conditionse1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“onion”
e1“The water productivity index increased linearly with increasing crop residue in NT conditions”
Claim · model-written summary
No-tillage with crop residue averaged 30% higher water productivity than conventional tillage.
- Taxon
- onionAllium cepae0
- Treatment
- NT treatments with crop residuee1
- Outcome
- Water productivity indexe1
- Direction
- highere1
- Value
- 30%e1
- Qualifier
- 8.13 kg m-3e1
- Comparator
- CT systeme1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“onion”
e1“Water productivity index of NT treatments with crop residue was on average 30% higher than that in the CT system (8.13 kg m-3)”
The same questions in other papers
tillage · physiology: water · Allium cepa (onion)Results agree
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- positive
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3 papers in the same direction as this paper
- positive
- positive
- 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.