Abstract
A field experiment was conducted to evaluate the effect of sequential application of herbicides on weed density, weed dry weight and yield of irrigated maize during kharif season, 2019-2020 at Agricultural College and Research Institute, Madurai, Tamil Nadu. In maize field, lesser number of weeds m-2 and weed dry weight m-2were observed in weed free check and was followed by pre emergence application of atrazine at0.25 kg a.i ha-1at 3 DAS followed by post emergence application of tembotrione at 120 g a.iha-1 at 25 DAS (T3).The highest maize grain yield was obtained in weed free check (T7) which was statistically on par with treatment pre emergence atrazine 0.25 kg ha-1followed by post emergence tembotrione 120 g ha-1 (T3), pre emergence pendimethalin 1 kg ha-1followed by post emergence tembotrione 120 g ha-1 (T4), pre emergence atrazine 0.25 kg ha-1 followed by post emergence halosulfuron methyl 90 g ha-1 (T5) and pre emergence pendimethalin 1 kg ha-1 followed bypost emergence halosulfuron methyl 90 g ha-1 (T6). During the experimentation highest B: C ratio was obtained in atrazine at 0.25 kg a.i ha-1 at 3 DAS followed by post emergence application of tembotrione at 120 g a.iha-1 at 25 DAS (T3) and was followed by preemergence application of pendimethalin at1 kg ha-1 followed by post emergence application of tembotrione at 120 g a.iha-1 at 25 DAS (T4).
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Claims 10
Claim · model-written summary
The weed-free check had the fewest weeds per square metre.
Zea maysNot reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“lesser number of weeds m-2 and weed dry weight m-2were observed in weed free check”
t0“Maize”
Claim · model-written summary
The weed-free check had the lowest weed dry weight per square metre.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“lesser number of weeds m-2 and weed dry weight m-2were observed in weed free check”
t0“Maize”
Claim · model-written summary
Atrazine followed by tembotrione ranked next after the weed-free check for weed number and dry weight.
- Treatment
- pre emergence application of atrazine at0.25 kg a.i ha-1at 3 DAS followed by post emergence application of tembotrione at 120 g a.iha-1 at 25 DASe0
- Interactor
- weedse1weed
- Outcome
- number of weeds m-2 and weed dry weight m-2e1
- Direction
- followed bye0
- Comparator
- weed free checke0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“weed free check and was followed by pre emergence application of atrazine at0.25 kg a.i ha-1at 3 DAS followed by post emergence application of tembotrione at 120 g a.iha-1 at 25 DAS (T3)”
e1“lesser number of weeds m-2 and weed dry weight m-2were observed”
t0“Maize”
Claim · model-written summary
The weed-free check produced the highest maize grain yield.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The highest maize grain yield was obtained in weed free check (T7)”
Claim · model-written summary
Atrazine followed by tembotrione had maize grain yield statistically on par with the weed-free check.
- Treatment
- pre emergence atrazine 0.25 kg ha-1followed by post emergence tembotrione 120 g ha-1 (T3)e0
- Outcome
- maize grain yielde0
- Direction
- statistically on pare0
- Comparator
- weed free check (T7)e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The highest maize grain yield was obtained in weed free check (T7) which was statistically on par with treatment pre emergence atrazine 0.25 kg ha-1followed by post emergence tembotrione 120 g ha-1 (T3)”
Claim · model-written summary
Pendimethalin followed by tembotrione had maize grain yield statistically on par with the weed-free check.
- Treatment
- pre emergence pendimethalin 1 kg ha-1followed by post emergence tembotrione 120 g ha-1 (T4)e0
- Outcome
- maize grain yielde0
- Direction
- statistically on pare0
- Comparator
- weed free check (T7)e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The highest maize grain yield was obtained in weed free check (T7) which was statistically on par with treatment pre emergence atrazine 0.25 kg ha-1followed by post emergence tembotrione 120 g ha-1 (T3), pre emergence pendimethalin 1 kg ha-1followed by post emergence tembotrione 120 g ha-1 (T4)”
Claim · model-written summary
Atrazine followed by halosulfuron methyl had maize grain yield statistically on par with the weed-free check.
- Treatment
- pre emergence atrazine 0.25 kg ha-1 followed by post emergence halosulfuron methyl 90 g ha-1 (T5)e0
- Outcome
- maize grain yielde0
- Direction
- statistically on pare0
- Comparator
- weed free check (T7)e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The highest maize grain yield was obtained in weed free check (T7) which was statistically on par with treatment pre emergence atrazine 0.25 kg ha-1followed by post emergence tembotrione 120 g ha-1 (T3), pre emergence pendimethalin 1 kg ha-1followed by post emergence tembotrione 120 g ha-1 (T4), pre emergence atrazine 0.25 kg ha-1 followed by post emergence halosulfuron methyl 90 g ha-1 (T5)”
Claim · model-written summary
Pendimethalin followed by halosulfuron methyl had maize grain yield statistically on par with the weed-free check.
- Treatment
- pre emergence pendimethalin 1 kg ha-1 followed bypost emergence halosulfuron methyl 90 g ha-1 (T6)e0
- Outcome
- maize grain yielde0
- Direction
- statistically on pare0
- Comparator
- weed free check (T7)e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The highest maize grain yield was obtained in weed free check (T7) which was statistically on par with treatment pre emergence atrazine 0.25 kg ha-1followed by post emergence tembotrione 120 g ha-1 (T3), pre emergence pendimethalin 1 kg ha-1followed by post emergence tembotrione 120 g ha-1 (T4), pre emergence atrazine 0.25 kg ha-1 followed by post emergence halosulfuron methyl 90 g ha-1 (T5) and pre emergence pendimethalin 1 kg ha-1 followed bypost emergence halosulfuron methyl 90 g ha-1 (T6)”
Claim · model-written summary
Atrazine followed by tembotrione had the highest benefit-cost ratio.
- Treatment
- atrazine at 0.25 kg a.i ha-1 at 3 DAS followed by post emergence application of tembotrione at 120 g a.iha-1 at 25 DAS (T3)e0
- Outcome
- B: C ratioe0
- Direction
- higheste0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“highest B: C ratio was obtained in atrazine at 0.25 kg a.i ha-1 at 3 DAS followed by post emergence application of tembotrione at 120 g a.iha-1 at 25 DAS (T3)”
t0“Maize”
Claim · model-written summary
Pendimethalin followed by tembotrione ranked second for benefit-cost ratio.
- Treatment
- preemergence application of pendimethalin at1 kg ha-1 followed by post emergence application of tembotrione at 120 g a.iha-1 at 25 DAS (T4)e0
- Outcome
- B: C ratioe0
- Direction
- followed bye0
- Comparator
- atrazine at 0.25 kg a.i ha-1 at 3 DAS followed by post emergence application of tembotrione at 120 g a.iha-1 at 25 DAS (T3)e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“highest B: C ratio was obtained in atrazine at 0.25 kg a.i ha-1 at 3 DAS followed by post emergence application of tembotrione at 120 g a.iha-1 at 25 DAS (T3) and was followed by preemergence application of pendimethalin at1 kg ha-1 followed by post emergence application of tembotrione at 120 g a.iha-1 at 25 DAS (T4)”
t0“Maize”
The same questions in other papers
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See all 406 papers →8 of 9 groups shown: named compounds and organisms first, then groups whose results differ (checked claim by claim), then those with positive and negative results, then the smaller groups.
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.