Abstract
Abstract A field experiment was conducted at 2‐year interval to determine the optimum time, number of foliar sprays for applying water‐soluble iron fertilizers and chelates, and the relative efficiencies of four different sources of iron for recovery of groundnut (Arachis hypogaea L.) plants from iron‐deficiency chlorosis for plants grown on a calcareous soil. Severe interveinal to complete leaf chlorosis was observed in 38–42% of the population during 30–60 days after emergence (DAE). Foliar applications of iron at 2 kg/ha in the form of 0.1% aqueous solution helped plants recover from chlorosis. However, no significant differences were found among the four iron sources [iron sulphate, iron sulphate+citric acid (400 g/ha), iron citrate, and Fe‐EDTA] with an average recovery of 46, 49, 47, and 46%, respectively. The maximum increase (16 to 24%) in pod yield was obtained when iron sulphate+citric acid was the iron source, while yield increases were 13 to 19, 12 to 18, and 11 to 18% over the control when iron sulphate, iron citrate, and Fe‐EDTA, respectively, were the iron sources. Splitting the application at a dose rate of 2 kg Fe/ha into two sprays at 1 kg each at 50 and 70 DAE, and in four sprays at 0.5 kg each at 30,45,60, and 75 DAE, gave the highest recovery of groundnut chlorosis, and produced the highest pod and haulm (fodder) yields.
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Claims 9
Claim · model-written summary
Chlorosis occurred in 38–42% of plants at 30–60 days after emergence.
- Taxon
- groundnut
Arachis hypogaeat0 - Outcome
- leaf chlorosise0
- Value
- 38–42%e0
- Qualifier
- 30–60 days after emergence (DAE)e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Severe interveinal to complete leaf chlorosis was observed in 38–42% of the population during 30–60 days after emergence (DAE).”
t0“groundnut plants”
Claim · model-written summary
Foliar iron helped chlorotic groundnut recover.
- Taxon
- groundnutArachis hypogaeat0
- Treatment
- Foliar applications of iron at 2 kg/ha in the form of 0.1% aqueous solutione0
- Outcome
- recover from chlorosise0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Foliar applications of iron at 2 kg/ha in the form of 0.1% aqueous solution helped plants recover from chlorosis.”
t0“groundnut plants”
Claim · model-written summary
The four iron sources did not differ significantly in chlorosis recovery.
- Taxon
- groundnutArachis hypogaeat0
- Treatment
- four iron sourcese0
- Outcome
- recoverye0
- Direction
- no significant differencese0
- Comparator
- iron sulphate, iron sulphate+citric acid (400 g/ha), iron citrate, and Fe‐EDTAe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“no significant differences were found among the four iron sources [iron sulphate, iron sulphate+citric acid (400 g/ha), iron citrate, and Fe‐EDTA] with an average recovery of 46, 49, 47, and 46%, respectively.”
t0“groundnut plants”
Claim · model-written summary
Iron sulphate plus citric acid increased pod yield by 16 to 24%.
- Taxon
- groundnutArachis hypogaeat0
- Treatment
- iron sulphate+citric acide0
- Outcome
- pod yielde0
- Direction
- increasee0
- Value
- 16 to 24%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The maximum increase (16 to 24%) in pod yield was obtained when iron sulphate+citric acid was the iron source”
t0“groundnut plants”
Claim · model-written summary
Iron sulphate increased pod yield 13 to 19% over control.
- Taxon
- groundnutArachis hypogaeat0
- Treatment
- iron sulphatee0
- Outcome
- yielde0
- Direction
- increasese0
- Value
- 13 to 19e1
- Comparator
- controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“yield increases were 13 to 19, 12 to 18, and 11 to 18% over the control when iron sulphate, iron citrate, and Fe‐EDTA, respectively, were the iron sources.”
t0“groundnut plants”
e1“13 to 19, 12 to 18, and 11 to 18%”
Claim · model-written summary
Iron citrate increased pod yield 12 to 18% over control.
- Taxon
- groundnutArachis hypogaeat0
- Treatment
- iron citratee0
- Outcome
- yielde0
- Direction
- increasese0
- Value
- 12 to 18e1
- Comparator
- controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“yield increases were 13 to 19, 12 to 18, and 11 to 18% over the control when iron sulphate, iron citrate, and Fe‐EDTA, respectively, were the iron sources.”
t0“groundnut plants”
e1“12 to 18, and 11 to 18%”
Claim · model-written summary
Fe‐EDTA increased pod yield 11 to 18% over control.
- Taxon
- groundnutArachis hypogaeat0
- Treatment
- Fe‐EDTAe0
- Outcome
- yielde0
- Direction
- increasese0
- Value
- 11 to 18%e0
- Comparator
- controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“yield increases were 13 to 19, 12 to 18, and 11 to 18% over the control when iron sulphate, iron citrate, and Fe‐EDTA, respectively, were the iron sources.”
t0“groundnut plants”
Claim · model-written summary
Splitting iron into two sprays gave the highest chlorosis recovery and pod and haulm yields.
- Taxon
- groundnutArachis hypogaeae0
- Treatment
- two sprays at 1 kg each at 50 and 70 DAEe0
- Outcome
- recovery of groundnut chlorosise0
- Direction
- higheste0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Splitting the application at a dose rate of 2 kg Fe/ha into two sprays at 1 kg each at 50 and 70 DAE, and in four sprays at 0.5 kg each at 30,45,60, and 75 DAE, gave the highest recovery of groundnut chlorosis, and produced the highest pod and haulm (fodder) yields.”
Claim · model-written summary
Four iron sprays gave the highest chlorosis recovery and pod and haulm yields.
- Taxon
- groundnutArachis hypogaeae0
- Treatment
- four sprays at 0.5 kg each at 30,45,60, and 75 DAEe0
- Outcome
- pod and haulm (fodder) yieldse0
- Direction
- higheste0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Splitting the application at a dose rate of 2 kg Fe/ha into two sprays at 1 kg each at 50 and 70 DAE, and in four sprays at 0.5 kg each at 30,45,60, and 75 DAE, gave the highest recovery of groundnut chlorosis, and produced the highest pod and haulm (fodder) yields.”
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