Abstract
Abstract The timing and rate of application of iron (Fe) chelates (seques‐trene 138 Fe) to correct Fe chlorosis of peanut grown on calcareous soils was studied for three seasons (1985–87) in seven experiments. It was found that the biological yield of peanut increased up to the highest rate of chelate used (8 g/m2). However, under the existing prices of the chelate and peanuts, application is financially untenable above 4 g/m2. The time of chelate application should not be at sowing, but after the crop becomes chlorotic. Even though the yield differences between early application at branching, 25 to 30 days after emergence, and an application at anthesis, 45 to 50 days after emergence, was small, the trend in yield and size of nuts favored the earlier application. Therefore, it is recommended that the application of the Fe chelate be at the early stages of plant development, particularly in cases of severe chlorosis.
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Claims 6
Claim · model-written summary
Peanut biological yield rose up to the highest chelate rate of 8 g/m2.
- Taxon
- peanut
Arachis hypogaeae0 - Treatment
- iron (Fe) chelatese1
- Outcome
- biological yielde0
- Direction
- increasede0
- Value
- 8 g/m2e0
- Setting
- calcareous soilse1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the biological yield of peanut increased up to the highest rate of chelate used (8 g/m2)”
e1“iron (Fe) chelates (seques‐trene 138 Fe) to correct Fe chlorosis of peanut grown on calcareous soils”
Claim · model-written summary
Under stated prices, chelate application above 4 g/m2 was financially untenable.
- Taxon
- peanutsArachis hypogaeae0
- Treatment
- chelatee0
- Outcome
- financially untenablee0
- Value
- 4 g/m2e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“under the existing prices of the chelate and peanuts, application is financially untenable above 4 g/m2”
Claim · model-written summary
The authors advise applying chelate after chlorosis appears rather than at sowing.
- Taxon
- peanutArachis hypogaeae1
- Treatment
- chelate applicatione0
- Outcome
- after the crop becomes chlorotice0
- Comparator
- at sowinge0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The time of chelate application should not be at sowing, but after the crop becomes chlorotic.”
e1“Fe chlorosis of peanut”
Claim · model-written summary
Early application at branching tended to favor peanut yield over application at anthesis, though differences were small.
- Taxon
- peanutArachis hypogaeae1
- Treatment
- early application at branchinge0
- Outcome
- yielde0
- Direction
- favorede0
- Qualifier
- was smalle0
- Comparator
- application at anthesise0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the yield differences between early application at branching, 25 to 30 days after emergence, and an application at anthesis, 45 to 50 days after emergence, was small, the trend in yield and size of nuts favored the earlier application”
e1“Fe chlorosis of peanut”
Claim · model-written summary
Early application at branching tended to favor nut size over application at anthesis, though differences were small.
- Taxon
- peanutArachis hypogaeae1
- Treatment
- early application at branchinge0
- Outcome
- size of nutse0
- Direction
- favorede0
- Qualifier
- was smalle0
- Comparator
- application at anthesise0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the yield differences between early application at branching, 25 to 30 days after emergence, and an application at anthesis, 45 to 50 days after emergence, was small, the trend in yield and size of nuts favored the earlier application”
e1“Fe chlorosis of peanut”
Claim · model-written summary
The authors recommend iron chelate early in plant development, particularly for severe chlorosis.
- Taxon
- peanutArachis hypogaeae1
- Treatment
- Fe chelatee0
- Outcome
- at the early stages of plant developmente0
- Qualifier
- severe chlorosise0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“it is recommended that the application of the Fe chelate be at the early stages of plant development, particularly in cases of severe chlorosis.”
e1“Fe chlorosis of peanut”
The same questions in other papers
iron atom · yield · Arachis hypogaea (peanut)Positive and negative results
24 papers in the same direction as this paper · 2 in the opposite direction
- no effect
- no effect
- positive
23 papers more in this group
See all 27 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.