Abstract
Abstract The need for supplemental Ca continues to be the most likely nutritional problem of peanut ( Arachis hypogaea L.) production on acid, sandy, and low cation exchange capacity (CEC) soils. The need for supplemental Ca from gypsum for improved yield, quality, and seed germination of four runner‐type cultivars was evaluated on 14 sites with a range in available soil Ca of 48 to 242 mg kg −1 during 1987 to 1989. Yields of all four cultivars were increased by addition of gypsum at the five sites with the lowest Mehlich‐1 extractable Ca (< 158 mg kg −1 ), although the magnitude of response varied among cultivars. Increases in sound mature kernal occurred for GK 7 and Southern Runner at soil Ca levels higher than that required for maximum yield. Calcium composition of nuts also was affected more by supplemental gypsum than was either yield or SMK. Germination percentage and seedling survival were both highly correlated with seed‐Ca concentration. Minimum seed Ca needed for maximum germination ranged between 368 and 414 mg kg −1 for the four cultivars. Comparable Ca values for seedling survival ranged between 361 and 445 mg kg −1 . The correlations between soil Ca and either germination or seedling vigor were less than those between seed Ca and germination or seedling vigor. All correlations involving Ca and germination suggest that soils used to produce seed, probably need a higher level of available Ca than those used for general production.
Abstract from the paper’s OpenAlex record, shown for indexing and research. Copyright remains with the authors or the publisher. Read at the source ↗
The text the model read, with the source record’s inline markup (italics, sub- and superscripts) rendered and its character entities decoded; quote offsets refer to the raw text.
Claims 9
Claim · model-written summary
Gypsum increased yields of all four cultivars at the five lowest calcium sites.
- Taxon
- peanut
Arachis hypogaeat0 - Treatment
- addition of gypsume0
- Outcome
- Yieldse0
- Direction
- increasede0
- Qualifier
- five sites with the lowest Mehlich‐1 extractable Ca (< 158 mg kg −1 )e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Yields of all four cultivars were increased by addition of gypsum at the five sites with the lowest Mehlich‐1 extractable Ca (< 158 mg kg −1 )”
t0“peanut”
Claim · model-written summary
Yield response magnitude varied among cultivars.
- Taxon
- peanutArachis hypogaeat0
- Outcome
- magnitude of responsee0
- Direction
- variede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the magnitude of response varied among cultivars”
t0“peanut”
Claim · model-written summary
Gypsum increased sound mature kernels in GK 7 and Southern Runner at soil calcium above that needed for maximum yield.
- Taxon
- peanutArachis hypogaeat0
- Material
- GK 7 and Southern Runnere0
- Treatment
- supplemental gypsume0
- Outcome
- sound mature kernale0
- Direction
- Increasese0
- Qualifier
- soil Ca levels higher than that required for maximum yielde0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Increases in sound mature kernal occurred for GK 7 and Southern Runner at soil Ca levels higher than that required for maximum yield. Calcium composition of nuts also was affected more by supplemental gypsum than was either yield or SMK”
t0“Supplemental Calcium Application on Yield, Grade, and Seed Quality of Runner Peanut”
Claim · model-written summary
Supplemental gypsum affected nut calcium composition more than yield or sound mature kernels.
- Taxon
- peanutArachis hypogaeat0
- Treatment
- supplemental gypsume0
- Outcome
- Calcium composition of nutse0
- Direction
- affected moree0
- Comparator
- yield or SMKe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Calcium composition of nuts also was affected more by supplemental gypsum than was either yield or SMK”
t0“peanut”
Claim · model-written summary
Seed calcium concentration correlated highly with germination percentage and seedling survival.
- Taxon
- peanutArachis hypogaeat0
- Compound
- seed‐Ca concentratione0
- Outcome
- Germination percentage and seedling survivale0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Germination percentage and seedling survival were both highly correlated with seed‐Ca concentration”
t0“peanut”
Claim · model-written summary
Minimum seed calcium for maximum germination ranged from 368 to 414 mg kg −1.
- Taxon
- peanutArachis hypogaeat0
- Outcome
- seed Ca needed for maximum germinatione0
- Direction
- maximume0
- Value
- 368 and 414 mg kg −1e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Minimum seed Ca needed for maximum germination ranged between 368 and 414 mg kg −1”
t0“peanut”
Claim · model-written summary
Calcium values for seedling survival ranged from 361 to 445 mg kg −1.
- Taxon
- peanutArachis hypogaeat0
- Outcome
- Ca values for seedling survivale0
- Value
- 361 and 445 mg kg −1e0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Comparable Ca values for seedling survival ranged between 361 and 445 mg kg −1”
t0“peanut”
Claim · model-written summary
Soil calcium correlations with germination or seedling vigor were weaker than seed calcium correlations.
- Taxon
- peanutArachis hypogaeat0
- Outcome
- correlations between soil Ca and either germination or seedling vigore0
- Direction
- less thane0
- Comparator
- those between seed Ca and germination or seedling vigore0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The correlations between soil Ca and either germination or seedling vigor were less than those between seed Ca and germination or seedling vigor”
t0“peanut”
Claim · model-written summary
The authors suggest seed production soils need more available calcium than general production soils.
- Taxon
- peanutArachis hypogaeat0
- Outcome
- higher level of available Cae0
- Comparator
- those used for general productione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“soils used to produce seed, probably need a higher level of available Ca than those used for general production”
t0“peanut”
The same questions in other papers
lime · yield · Arachis hypogaea (peanut)Positive and negative results
132 papers in the same direction as this paper · 7 in the opposite direction · 2 reporting no difference from an alternative
- positive
- positive
- positive
138 papers more in this group
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.