Abstract
The activity of dehydrogenase (µg TPF produced g-1 day-1) followed decreasing trend from before treatment imposition to 3 days after treatment imposition thereafter it showed increasing trend. Sulfonyl urea herbicides had the lower dehydrogenase activity immediately after herbicide application as compared to the other herbicide group’s viz., chloroacetamide, triazolepyramidine, pyramidinethiobenzole and aryloxyphenoxy propionate. Urease activity (mg of NH4+ released g-1 soil 2 hr-1), increased from 0 DAT up to 45 DAT and thereafter it decreased. There was slight initial depression in the urease activity 3 days after application in every treatment. With the progress of time by 15-20 DAT herbicide treated plots recorded on par results with weedy check (control). Further at 23 DAT, herbicide treated plots recorded significantly higher urease activity than control during both the years of study. Activity of acid phosphatase and alkaline phosphatase (g of PNP released g-1 soil h-1) increased from 0 DAT to 45 DAT, thereafter the activity decreased. At 6 DAT and 15 DAT the higher acid phosphatase activity was recorded in weedy check (T14) which was on par with hand weeding twice at 25 and 45 DAT (T13). The reduction in acid phosphatase activity is in the range of 15 % and 20% over control during 2013 and 2014 respectively. Detracting effect of herbicides towards enzyme activities decreased with time. Except a slight depression initially the tested herbicides at field rate was non-inhibitory for prolonged period.
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Claims 4
Claim · model-written summary
Sulfonyl urea herbicides gave lower dehydrogenase activity immediately after application than the other herbicide groups in transplanted rice.
- Taxon
- Rice
Oryza sativat0 - Treatment
- Sulfonyl urea herbicidese0
- Outcome
- dehydrogenase activitye0
- Direction
- lowere0
- Comparator
- other herbicide group’se0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Sulfonyl urea herbicides had the lower dehydrogenase activity immediately after herbicide application as compared to the other herbicide group’s viz., chloroacetamide”
t0“Transplanted Rice”
Claim · model-written summary
At 23 DAT herbicide-treated plots had significantly higher urease activity than the weedy control in both years.
- Taxon
- RiceOryza sativat0
- Treatment
- herbicidee0
- Outcome
- urease activitye0
- Direction
- highere0
- Comparator
- controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“at 23 DAT, herbicide treated plots recorded significantly higher urease activity than control”
t0“Transplanted Rice”
Claim · model-written summary
Acid phosphatase activity was reduced by 15% and 20% over control in 2013 and 2014 respectively.
- Taxon
- RiceOryza sativat0
- Outcome
- acid phosphatase activitye0
- Direction
- reductione0
- Value
- 15 % and 20%e0
- Comparator
- controle0
Not reportedTreatment
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The reduction in acid phosphatase activity is in the range of 15 % and 20% over control during 2013 and 2014 respectively”
t0“Transplanted Rice”
Claim · model-written summary
Except for a slight initial depression, the tested herbicides at field rate were non-inhibitory to enzyme activities for a prolonged period.
- Taxon
- RiceOryza sativat0
- Treatment
- tested herbicides at field ratee0
- Outcome
- non-inhibitorye0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Except a slight depression initially the tested herbicides at field rate was non-inhibitory for prolonged period”
t0“Transplanted Rice”
The same questions in other papers
herbicide · soil: biology · Oryza sativa (rice)Positive and negative results
6 papers in the same direction as this paper · 8 in the opposite direction
- positive
- negative
- negative
11 papers more in this group
See all 15 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.