Abstract
Summary A microplot experiment was conducted for two consecutive years, 1978–9 and 1979–80, on alkaline calcareous soils of Chittor, Kapasan, Nimbaheda and Chhotisadari blocks at the Department of Agronomy, College of Agriculture, Udaipur (India). It was found that soil application of 250 kg S/ha both of elemental sulphur and gypsum significantly increased chlorophyll a and b and concentrations of N, K and S of plants. Leaf sap p H and P and Fe concentrations were, however, significantly reduced by sulphur treatments. Foliar application of 0·2% Fe-EDDHA increased chlorophyll a and b and caused marginal increase in N concentration of plants. K and S concentrations remained unaffected but P and Fe concentrations underwent significant reduction. Leaf sap pH was not at all affected by this treatment. Failure of metabolic translocation of iron and hence its inactivation inside the plant is suggested to be the most probable cause for the incidence of chlorosis despite high tissue Fe concentration. Sulphur application created a balanced nutritional environment and thus kept iron physiologically active for chlorophyll synthesis. Reduced efficacy of Fe-EDDHA might be due to high P concentration in the plant.
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Claims 11
Claim · model-written summary
Soil sulphur and gypsum significantly increased groundnut chlorophyll a and b.
- Taxon
- groundnut
Arachis hypogaeat0 - Treatment
- 250 kg S/ha both of elemental sulphur and gypsume0
- Outcome
- chlorophyll a and be0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“soil application of 250 kg S/ha both of elemental sulphur and gypsum significantly increased chlorophyll a and b and concentrations of N, K and S of plants”
t0“groundnut”
Claim · model-written summary
Soil sulphur and gypsum significantly increased groundnut N, K and S concentrations.
- Taxon
- groundnutArachis hypogaeat0
- Treatment
- 250 kg S/ha both of elemental sulphur and gypsume0
- Outcome
- concentrations of N, K and Se0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“soil application of 250 kg S/ha both of elemental sulphur and gypsum significantly increased chlorophyll a and b and concentrations of N, K and S of plants”
t0“groundnut”
Claim · model-written summary
Sulphur treatments significantly reduced groundnut leaf sap pH and P and Fe concentrations.
- Taxon
- groundnutArachis hypogaeat0
- Treatment
- sulphur treatmentse0
- Outcome
- Leaf sap p H and P and Fe concentrationse0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Leaf sap p H and P and Fe concentrations were, however, significantly reduced by sulphur treatments”
t0“groundnut”
Claim · model-written summary
Foliar Fe-EDDHA increased groundnut chlorophyll a and b.
- Taxon
- groundnutArachis hypogaeat0
- Treatment
- 0·2% Fe-EDDHAe0
- Outcome
- chlorophyll a and be0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Foliar application of 0·2% Fe-EDDHA increased chlorophyll a and b”
t0“groundnut”
Claim · model-written summary
Foliar Fe-EDDHA marginally increased groundnut N concentration.
- Taxon
- groundnutArachis hypogaeat0
- Treatment
- 0·2% Fe-EDDHAe0
- Outcome
- N concentratione0
- Direction
- increasee0
- Qualifier
- marginale0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Foliar application of 0·2% Fe-EDDHA increased chlorophyll a and b and caused marginal increase in N concentration of plants”
t0“groundnut”
Claim · model-written summary
Foliar Fe-EDDHA left groundnut K and S concentrations unaffected.
- Taxon
- groundnutArachis hypogaeat0
- Treatment
- Fe-EDDHAe1
- Outcome
- K and S concentrationse0
- Direction
- unaffectede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“K and S concentrations remained unaffected”
e1“Foliar application of 0·2% Fe-EDDHA”
t0“groundnut”
Claim · model-written summary
Foliar Fe-EDDHA significantly reduced groundnut P and Fe concentrations.
- Taxon
- groundnutArachis hypogaeat0
- Treatment
- Fe-EDDHAe1
- Outcome
- P and Fe concentrationse0
- Direction
- reductione0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“P and Fe concentrations underwent significant reduction”
e1“Foliar application of 0·2% Fe-EDDHA”
t0“groundnut”
Claim · model-written summary
Foliar Fe-EDDHA did not affect groundnut leaf sap pH.
- Taxon
- groundnutArachis hypogaeat0
- Treatment
- Fe-EDDHAe1
- Outcome
- Leaf sap pHe0
- Direction
- not at all affectede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Leaf sap pH was not at all affected by this treatment”
e1“Foliar application of 0·2% Fe-EDDHA”
t0“groundnut”
Claim · model-written summary
The authors suggested impaired iron translocation and inactivation as the probable cause of chlorosis despite high tissue iron.
- Taxon
- groundnutArachis hypogaeat0
- Outcome
- incidence of chlorosise0
- Qualifier
- Failure of metabolic translocation of iron and hence its inactivation inside the plante0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Failure of metabolic translocation of iron and hence its inactivation inside the plant is suggested to be the most probable cause for the incidence of chlorosis despite high tissue Fe concentration”
t0“groundnut”
Claim · model-written summary
The authors interpreted sulphur as sustaining physiologically active iron for chlorophyll synthesis.
- Taxon
- groundnutArachis hypogaeat0
- Treatment
- Sulphur applicatione0
- Outcome
- iron physiologically active for chlorophyll synthesise0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Sulphur application created a balanced nutritional environment and thus kept iron physiologically active for chlorophyll synthesis”
t0“groundnut”
Claim · model-written summary
The authors suggested high plant P as a reason for reduced Fe-EDDHA efficacy.
- Taxon
- groundnutArachis hypogaeat0
- Treatment
- Fe-EDDHAe0
- Compound
- Pe0
- Outcome
- Reduced efficacye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Reduced efficacy of Fe-EDDHA might be due to high P concentration in the plant”
t0“groundnut”
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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.