Abstract
An experiment was conducted at woodhouse farm, Horticultural Research Station, Ooty, in the period of October 2017 to March 2018, to quantify the impact of tropospheric ozone and ozone protectants spray on chlorophyll content and antioxidant enzyme levels of cauliflower crop in a factorial completely randomized block design replicated thrice. During the study period, the plant exposed to ambient ozone level + 3% Panchagavya foliar spray had higher chlorophyll ‘a’, chlorophyll ‘b’ and total chlorophyll. The ambient ozone level + 3% Neem oil foliar spray had significantly higher total nitrogen, total phosphorous, total potassium. The elevated ozone exposure at 200 ppb significantly reduced the, total nitrogen, total phosphorous, total potassium, Chlorophyll ‘a’, Chlorophyll ‘b’, total chlorophyll and increased catalase and peroxidase enzyme activities in cauliflower plant. It is concluded that the tropospheric ozone had detrimental effect on chlorophyll contents and anti-oxidant enzymes in cauliflower crop. Further, the ozone protectants played a major role to nullify the tropospheric ozone effect on growth, physiology, development and yield of cauliflower and among the protectents, panchagavya performed well followed by neem oil and ascorbic acid.
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Claims 6
Claim · model-written summary
At ambient ozone, 3% Panchagavya spray gave higher chlorophyll a, b and total chlorophyll.
- Taxon
- Cauliflower
Brassica oleracea var. botrytist0 - Treatment
- ambient ozone level + 3% Panchagavya foliar spraye0
- Outcome
- chlorophyll ‘a’, chlorophyll ‘b’ and total chlorophylle0
- Direction
- highere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Cauliflower (Brassica oleracea var. botrytis L.)”
e0“the plant exposed to ambient ozone level + 3% Panchagavya foliar spray had higher chlorophyll ‘a’, chlorophyll ‘b’ and total chlorophyll”
Claim · model-written summary
At ambient ozone, 3% Neem oil spray gave significantly higher total N, P and K.
- Taxon
- CauliflowerBrassica oleracea var. botrytist0
- Treatment
- ambient ozone level + 3% Neem oil foliar spraye0
- Outcome
- total nitrogen, total phosphorous, total potassiume0
- Direction
- highere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Cauliflower (Brassica oleracea var. botrytis L.)”
e0“The ambient ozone level + 3% Neem oil foliar spray had significantly higher total nitrogen, total phosphorous, total potassium”
Claim · model-written summary
Elevated ozone at 200 ppb reduced total N, P and K.
- Taxon
- CauliflowerBrassica oleracea var. botrytist0
- Treatment
- elevated ozone exposure at 200 ppbe0
- Outcome
- total nitrogen, total phosphorous, total potassiume0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Cauliflower (Brassica oleracea var. botrytis L.)”
e0“The elevated ozone exposure at 200 ppb significantly reduced the, total nitrogen, total phosphorous, total potassium”
Claim · model-written summary
Elevated ozone at 200 ppb reduced chlorophyll a, b and total chlorophyll.
- Taxon
- CauliflowerBrassica oleracea var. botrytist0
- Treatment
- elevated ozone exposure at 200 ppbe0
- Outcome
- Chlorophyll ‘a’, Chlorophyll ‘b’, total chlorophylle0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Cauliflower (Brassica oleracea var. botrytis L.)”
e0“The elevated ozone exposure at 200 ppb significantly reduced the, total nitrogen, total phosphorous, total potassium, Chlorophyll ‘a’, Chlorophyll ‘b’, total chlorophyll”
Claim · model-written summary
Elevated ozone at 200 ppb increased catalase and peroxidase activities.
- Taxon
- CauliflowerBrassica oleracea var. botrytist0
- Treatment
- elevated ozone exposure at 200 ppbe0
- Outcome
- catalase and peroxidase enzyme activitiese0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Cauliflower (Brassica oleracea var. botrytis L.)”
e0“The elevated ozone exposure at 200 ppb significantly reduced the, total nitrogen, total phosphorous, total potassium, Chlorophyll ‘a’, Chlorophyll ‘b’, total chlorophyll and increased catalase and peroxidase enzyme activities”
Claim · model-written summary
Panchagavya performed best among ozone protectants, followed by neem oil and ascorbic acid.
- Taxon
- CauliflowerBrassica oleracea var. botrytist0
- Treatment
- panchagavyae0
- Outcome
- performed welle0
- Direction
- performed welle0
- Comparator
- neem oil and ascorbic acide0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Cauliflower (Brassica oleracea var. botrytis L.)”
e0“among the protectents, panchagavya performed well followed by neem oil and ascorbic acid”
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