Abstract
Abstract Several placements of vesicular‐arbuscular (VA) mycorrhizal inoculum in soil were compared in a greenhouse study of the potential use of VA fungi for increasing yields of agronomic crops on low P‐status soils. Placement of VA mycorrhizal inoculum and rock phosphate was considered an integral treatment. Inoculation with VA fungi increased corn yields about 50% over the increases due to indigenous mycorrhizal fungi. Placements of inoculum in a layer 5 cm below the seeds or mixed with a 5‐cm layer of soil below the seeds were effective; while two other placements, with the seeds or in a band with rock phosphate, were ineffective in increasing yields. None of the treatments that used rock phosphate were as effective as concentrated superphosphate in increasing yields, which indicated that lack of P was still limiting plant growth in the rock phosphate treatments. There were no effects of VA mycorrhizal inoculation of soil on growth of soybeans ( Glycine max L. Merrill ‘Harosoy 63’) and only a minor effect on sudangrass ( Sorghum bicolor var. sudanense ) for the placements that were tested.
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Claims 8
Claim · model-written summary
VA fungal inoculation raised corn yield by about 50% beyond indigenous mycorrhizal effects.
- Taxon
- corn
Zea mays subsp. mayse0 - Treatment
- Inoculation with VA fungie0
- Interactor
- VA fungie0symbiont
- Outcome
- corn yieldse0
- Direction
- increasede0
- Value
- about 50%e0
- Comparator
- indigenous mycorrhizal fungie0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Inoculation with VA fungi increased corn yields about 50% over the increases due to indigenous mycorrhizal fungi”
Claim · model-written summary
Inoculum placed in a layer 5 cm below seeds increased yields effectively.
- Taxon
- Three Agronomic Cropst0
- Treatment
- in a layer 5 cm below the seedse0
- Outcome
- yieldse0
- Direction
- increasinge0
Not reportedComparator
Verbatim
e0“Placements of inoculum in a layer 5 cm below the seeds or mixed with a 5‐cm layer of soil below the seeds were effective; while two other placements, with the seeds or in a band with rock phosphate, were ineffective in increasing yields”
t0“Three Agronomic Crops”
Claim · model-written summary
Inoculum mixed into a 5-cm soil layer below seeds increased yields effectively.
- Taxon
- Three Agronomic Cropst0
- Treatment
- mixed with a 5‐cm layer of soil below the seedse0
- Outcome
- yieldse0
- Direction
- increasinge0
Not reportedComparator
Verbatim
e0“Placements of inoculum in a layer 5 cm below the seeds or mixed with a 5‐cm layer of soil below the seeds were effective; while two other placements, with the seeds or in a band with rock phosphate, were ineffective in increasing yields”
t0“Three Agronomic Crops”
Claim · model-written summary
Placement with seeds was ineffective in increasing yields.
- Taxon
- Three Agronomic Cropst0
- Treatment
- with the seedse0
- Outcome
- yieldse0
- Direction
- ineffective in increasinge0
Not reportedComparator
Verbatim
e0“two other placements, with the seeds or in a band with rock phosphate, were ineffective in increasing yields”
t0“Three Agronomic Crops”
Claim · model-written summary
Placement in a band with rock phosphate was ineffective in increasing yields.
- Taxon
- Three Agronomic Cropst0
- Treatment
- in a band with rock phosphatee0
- Outcome
- yieldse0
- Direction
- ineffective in increasinge0
Not reportedComparator
Verbatim
e0“two other placements, with the seeds or in a band with rock phosphate, were ineffective in increasing yields”
t0“Three Agronomic Crops”
Claim · model-written summary
Rock-phosphate treatments were less effective than concentrated superphosphate for increasing yields.
Verbatim
e0“None of the treatments that used rock phosphate were as effective as concentrated superphosphate in increasing yields”
t0“Three Agronomic Crops”
Claim · model-written summary
VA inoculation had no effect on soybean growth for tested placements.
- Taxon
- soybeans
Glycine maxe0 - Material
- Harosoy 63e0
- Treatment
- VA mycorrhizal inoculation of soile0
- Interactor
- VA mycorrhizale0symbiont
- Outcome
- growth of soybeanse0
- Direction
- no effectse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“There were no effects of VA mycorrhizal inoculation of soil on growth of soybeans ( Glycine max L. Merrill ‘Harosoy 63’)”
Claim · model-written summary
VA inoculation had only a minor effect on sudangrass growth for tested placements.
- Taxon
- sudangrass
Sorghum ×drummondiie0 - Treatment
- VA mycorrhizal inoculation of soile1
- Interactor
- VA mycorrhizale1symbiont
- Outcome
- sudangrasse0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“only a minor effect on sudangrass ( Sorghum bicolor var. sudanense ) for the placements that were tested”
e1“VA mycorrhizal inoculation of soil”
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See all 538 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.