Abstract
Abstract Minimum sufficiency levels of hull and seed Ca for maximum yield and grade of runner or Virginia type peanuts (Arachis hypogaea L.) have not been established and there is limited information on single and combined effects of limestone and gypsum on production and quality of peanuts. Field experiments were conducted on runner and Virginia type peanuts to study single and combined effects of limestone and gypsum on yield and grade, and to attempt to establish minimum sufficiency levels of hull and seed Ca for maximum yield and grade of each type. Gypsum treatments, O, low, medium, and high rates, were superimposed on residual limestone rates on three sites with ‘Florunner’ (runner type) and on one site with ‘NC‐7’ (Virginia type) peanuts. Yield and grade of Florunner peanuts were not increased by limestone or gypsum treatments on any site even though soil Ca concentrations (Mehlich 1) ranged from 152 to 200 mg/kg among the sites. These levels were lower than the Georgia recommended minimum sufficiency value of 250 mg/kg. However, yield and grade of ‘NC‐7’ peanuts were increased by limestone or gypsum, but maximum yield occurred only where gypsum was applied even with soil Ca levels of 682 mg/kg. The minimum hull Ca level of 1.2 g/kg and seed Ca of 0.42 g/kg were sufficient for Florunner peanuts since yields and quality were not increased by limestone or gypsum application. Maximim yield and grade were achieved with Florunner at leaf, hull, and seed Ca concentrations of 13.2, 1.2, and 0.42 g/kg as compared with 26.0, 1.9, and 0.58 g/kg for NC‐7, respectively. These data show that NC‐7 has a higher Ca requirement than Florunner.
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Claims 8
Claim · model-written summary
Yield and grade of Florunner peanuts were not increased by limestone or gypsum treatments.
- Taxon
- peanuts
Arachis hypogaeae0 - Material
- Florunnere0
- Treatment
- limestone or gypsum treatmentse0
- Outcome
- yield and gradee0
- Direction
- not increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Yield and grade of Florunner peanuts were not increased by limestone or gypsum treatments on any site”
Claim · model-written summary
Yield and grade of NC‐7 peanuts were increased by limestone or gypsum.
- Taxon
- peanutsArachis hypogaeae1
- Material
- NC‐7e1
- Treatment
- limestone or gypsume1
- Outcome
- yield and gradee1
- Direction
- increasede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“yield and grade of ‘NC‐7’ peanuts were increased by limestone or gypsum, but maximum yield occurred only where gypsum was applied”
Claim · model-written summary
Maximum yield of NC‐7 peanuts occurred only where gypsum was applied.
- Taxon
- peanutsArachis hypogaeae1
- Material
- NC‐7e1
- Treatment
- gypsume1
- Outcome
- maximum yielde1
- Direction
- maximume1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“yield and grade of ‘NC‐7’ peanuts were increased by limestone or gypsum, but maximum yield occurred only where gypsum was applied”
Claim · model-written summary
A minimum hull Ca level of 1.2 g/kg was sufficient for Florunner peanuts.
- Taxon
- peanutsArachis hypogaeae2
- Material
- Florunnere2
- Organ / stage
- hulle2
- Outcome
- minimum hull Ca levele2
- Value
- 1.2 g/kge2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“The minimum hull Ca level of 1.2 g/kg and seed Ca of 0.42 g/kg were sufficient for Florunner peanuts”
Claim · model-written summary
A minimum seed Ca level of 0.42 g/kg was sufficient for Florunner peanuts.
- Taxon
- peanutsArachis hypogaeae2
- Material
- Florunnere2
- Organ / stage
- seede2
- Outcome
- seed Cae2
- Value
- 0.42 g/kge2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“The minimum hull Ca level of 1.2 g/kg and seed Ca of 0.42 g/kg were sufficient for Florunner peanuts”
Claim · model-written summary
Florunner peanuts reached maximum yield and grade at leaf, hull and seed Ca concentrations of 13.2, 1.2 and 0.42 g/kg.
- Taxon
- peanutsArachis hypogaeae0
- Material
- Florunnere3
- Organ / stage
- leaf, hull, and seede3
- Outcome
- yield and gradee3
- Value
- 13.2, 1.2, and 0.42 g/kge3
- Comparator
- NC‐7e3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Yield and grade of Florunner peanuts were not increased by limestone or gypsum treatments on any site”
e3“Maximim yield and grade were achieved with Florunner at leaf, hull, and seed Ca concentrations of 13.2, 1.2, and 0.42 g/kg as compared with 26.0, 1.9, and 0.58 g/kg for NC‐7”
Claim · model-written summary
NC‐7 peanuts reached maximum yield and grade at leaf, hull and seed Ca concentrations of 26.0, 1.9 and 0.58 g/kg.
- Taxon
- peanutsArachis hypogaeae0
- Material
- NC‐7e3
- Organ / stage
- leaf, hull, and seede3
- Outcome
- yield and gradee3
- Value
- 26.0, 1.9, and 0.58 g/kge3
- Comparator
- Florunnere3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Yield and grade of Florunner peanuts were not increased by limestone or gypsum treatments on any site”
e3“Maximim yield and grade were achieved with Florunner at leaf, hull, and seed Ca concentrations of 13.2, 1.2, and 0.42 g/kg as compared with 26.0, 1.9, and 0.58 g/kg for NC‐7”
Claim · model-written summary
NC‐7 peanuts have a higher Ca requirement than Florunner peanuts.
- Taxon
- peanutsArachis hypogaeae0
- Material
- NC‐7e4
- Outcome
- Ca requiremente4
- Direction
- highere4
- Comparator
- Florunnere4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Yield and grade of Florunner peanuts were not increased by limestone or gypsum treatments on any site”
e4“These data show that NC‐7 has a higher Ca requirement than Florunner”
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132 papers in the same direction as this paper · 7 in the opposite direction · 2 reporting no difference from an alternative
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See all 142 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.