Abstract
To ascertain the effects of paraquat on quick clearing weeds and stubble in different states of paddy field,the experiments of the chemical amount, water adding, weather, synergist and stubble height were conducted in Ninxiang county,Hunan province in 2000. The results show that the effective amount of paraquat is about 3.75 L /hm 2.The water adding has great influence on weed and stubble control. Agroxone, acetochlor,ammonium bicarbonate and potassium chloride can enhance the effects of paraquat at different degrees. Stubble heights affect the hill ratio and plant numbers of ratooning. It is recommended that the application amount of paraquat is 3.00～3.75 L/hm 2 in winter-socked field ,3.75～4.50 L/hm 2 in winter-dry field in early rice, and 3.75 L/hm 2 in no-tilled field in late rice with 45 kg/hm 2 ammonium bicarbonate and 450 mL/hm 2 acetochlor as synergist and 900 kg/hm 2 water.The spray should be conducted at duskor early morning. Meanwhile the stubble height should not be higher than 4 cm. After weeds get withered,it is necessary to flood the weeds and stubbles to prevent then from regenerating.
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Claims 11
Claim · model-written summary
The effective amount of paraquat for quick clearing of weeds and stubble in paddy fields was about 3.75 L/hm2.
Not reportedTaxon
Verbatim
e0“the effective amount of paraquat is about 3.75 L /hm 2”
Claim · model-written summary
Water adding had a great influence on weed and stubble control.
Not reportedComparatorDirection
Verbatim
e0“The water adding has great influence on weed and stubble control”
Claim · model-written summary
Agroxone, acetochlor and ammonium bicarbonate enhanced the effects of paraquat to different degrees.
Not reportedTaxonComparator
Verbatim
e0“Agroxone, acetochlor,ammonium bicarbonate and potassium chloride can enhance the effects of paraquat at different degrees”
Claim · model-written summary
Potassium chloride enhanced the effects of paraquat to a degree.
Not reportedTaxonComparator
Verbatim
e0“Agroxone, acetochlor,ammonium bicarbonate and potassium chloride can enhance the effects of paraquat at different degrees”
Claim · model-written summary
Stubble height affected the hill ratio and plant numbers of ratooning.
Not reportedTaxonComparatorDirection
Verbatim
e0“Stubble heights affect the hill ratio and plant numbers of ratooning”
Claim · model-written summary
Recommended paraquat application amount in winter-soaked field is 3.00-3.75 L/hm2.
Not reportedTaxon
Verbatim
e0“the application amount of paraquat is 3.00～3.75 L/hm 2 in winter-socked field”
Claim · model-written summary
Recommended paraquat application amount in winter-dry field in early rice is 3.75-4.50 L/hm2.
- Taxon
- rice
Oryza sativae0 - Outcome
- 3.75～4.50 L/hm 2e0
- Value
- 3.75～4.50 L/hm 2e0
- Setting
- winter-dry fielde0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“3.75～4.50 L/hm 2 in winter-dry field in early rice”
Claim · model-written summary
Recommended paraquat application amount in no-tilled field in late rice is 3.75 L/hm2 with 45 kg/hm2 ammonium bicarbonate, 450 mL/hm2 acetochlor as synergist and 900 kg/hm2 water.
- Taxon
- riceOryza sativae0
- Outcome
- 3.75 L/hm 2e0
- Value
- 3.75 L/hm 2e0
- Qualifier
- 45 kg/hm 2 ammonium bicarbonate and 450 mL/hm 2 acetochlor as synergist and 900 kg/hm 2 watere0
- Setting
- no-tilled fielde0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“3.75 L/hm 2 in no-tilled field in late rice with 45 kg/hm 2 ammonium bicarbonate and 450 mL/hm 2 acetochlor as synergist and 900 kg/hm 2 water”
Claim · model-written summary
The authors recommend spraying at dusk or early morning.
- Outcome
- conducted at duskor early morninge0
Not reportedTaxon
Verbatim
e0“The spray should be conducted at duskor early morning”
Claim · model-written summary
The authors recommend that the stubble height should not be higher than 4 cm.
Not reportedTaxon
Verbatim
e0“the stubble height should not be higher than 4 cm”
Claim · model-written summary
The authors recommend flooding the weeds and stubbles after the weeds wither to prevent regeneration.
Verbatim
e0“it is necessary to flood the weeds and stubbles to prevent then from regenerating”
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117 papers more in this group
See all 121 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.