Abstract
'Georgia Red' peanut (Arachis hypogaea L.) and TU-82-155 sweetpotato [Ipomoea batatas (L.) Lam] were grown in monocultured or intercropped recirculating hydroponic systems in a greenhouse using the nutrient film technique (NFT). The objective was to determine whether growth and subsequent yield would be affected by intercropping. Treatments were sweetpotato monoculture (SP), peanut monoculture (PN), and sweetpotato and peanut grown in separate NFT channels but sharing a common nutrient solution (SP-PN). Greenhouse conditions ranged from 24 to 33 degrees C, 60% to 90% relative humidity (RH), and photosynthetic photon flux (PPF) of 200 to 1700 micromoles m-2 s-1. Sweetpotato cuttings (15 cm long) and 14-day-old seedlings of peanuts were planted into growth channels (0.15 x 0.15 x 1.2 m). Plants were spaced 25 cm apart within and 25 cm apart between growing channels. A modified half-Hoagland solution with a 1 N: 2.4 K ratio was used. Solution pH was maintained between 5.5 and 6.0 for treatments involving SP and 6.4 and 6.7 for PN. Electrical conductivity (EC) ranged between 1100 and 1200 microS cm-1. The number of storage roots per sweetpotato plant was similar for both SP and SP-PN. Storage root fresh and dry mass were 29% and 36% greater, respectively, for plants in the SP-PN treatment than for plants in the SP treatment. The percent dry mass of the storage roots, dry mass of fibrous and pencil roots, and the length-to-diameter ratio of storage roots were similar for SP and SP-PN sweetpotato plants. Likewise, foliage fresh and dry mass and harvest index were not significantly influenced by treatment. Total dry mass was 37% greater for PN than for SP-PN peanut plants, and pod dry mass was 82% higher. Mature and total seed dry mass and fibrous root dry mass were significantly greater for PN than for SP-PN plants. Harvest index (HI) was similar for both treatments. Root length tended to be lower for seedlings grown in the nutrient solution from the SP-PN treatment.
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Claims 10
Claim · model-written summary
Sweetpotato storage-root count was similar in monoculture and shared solution.
- Taxon
- sweetpotato
_Flower.jpg?width=60)
Ipomoea batatase1 - Treatment
- SP-PNe0
- Outcome
- number of storage roots per sweetpotato plante0
- Direction
- similare0
- Comparator
- SPe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_Flower.jpg?width=500)
Verbatim
e0“The number of storage roots per sweetpotato plant was similar for both SP and SP-PN.”
e1“sweetpotato [Ipomoea batatas (L.) Lam]”
Claim · model-written summary
Sweetpotato storage-root fresh mass was 29% greater with shared solution.
- Taxon
- sweetpotatoIpomoea batatase1
- Treatment
- SP-PN treatmente0
- Outcome
- Storage root freshe0
- Direction
- greatere0
- Value
- 29%e0
- Comparator
- SP treatmente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Storage root fresh and dry mass were 29% and 36% greater, respectively, for plants in the SP-PN treatment than for plants in the SP treatment.”
e1“sweetpotato [Ipomoea batatas (L.) Lam]”
Claim · model-written summary
Sweetpotato storage-root dry mass was 36% greater with shared solution.
- Taxon
- sweetpotatoIpomoea batatase1
- Treatment
- SP-PN treatmente0
- Outcome
- dry masse0
- Direction
- greatere0
- Value
- 36%e0
- Comparator
- SP treatmente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Storage root fresh and dry mass were 29% and 36% greater, respectively, for plants in the SP-PN treatment than for plants in the SP treatment.”
e1“sweetpotato [Ipomoea batatas (L.) Lam]”
Claim · model-written summary
Sweetpotato root dry-mass fraction, fibrous and pencil-root dry mass, and root shape were similar between treatments.
- Taxon
- sweetpotatoIpomoea batatase0
- Treatment
- SP-PNe0
- Outcome
- percent dry mass of the storage roots, dry mass of fibrous and pencil roots, and the length-to-diameter ratio of storage rootse0
- Direction
- similare0
- Comparator
- SPe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The percent dry mass of the storage roots, dry mass of fibrous and pencil roots, and the length-to-diameter ratio of storage roots were similar for SP and SP-PN sweetpotato plants.”
Claim · model-written summary
Sweetpotato foliage mass and harvest index were not significantly influenced by treatment.
- Taxon
- sweetpotatoIpomoea batatase1
- Treatment
- SP-PNe1
- Outcome
- foliage fresh and dry mass and harvest indexe0
- Direction
- not significantly influencede0
- Comparator
- SPe1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“foliage fresh and dry mass and harvest index were not significantly influenced by treatment.”
e1“SP and SP-PN sweetpotato plants”
Claim · model-written summary
Peanut total dry mass was 37% greater in monoculture.
- Taxon
- peanut
Arachis hypogaeae0 - Treatment
- PNe0
- Outcome
- Total dry masse0
- Direction
- greatere0
- Value
- 37%e0
- Comparator
- SP-PNe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Total dry mass was 37% greater for PN than for SP-PN peanut plants”
Claim · model-written summary
Peanut pod dry mass was 82% higher in monoculture.
- Taxon
- peanutArachis hypogaeae1
- Treatment
- PNe1
- Outcome
- pod dry masse0
- Direction
- highere0
- Value
- 82%e0
- Comparator
- SP-PNe1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“and pod dry mass was 82% higher.”
e1“for PN than for SP-PN peanut plants”
Claim · model-written summary
Peanut mature and total seed dry mass and fibrous-root dry mass were greater in monoculture.
- Taxon
- peanutArachis hypogaeae1
- Treatment
- PNe0
- Outcome
- Mature and total seed dry mass and fibrous root dry masse0
- Direction
- greatere0
- Comparator
- SP-PNe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Mature and total seed dry mass and fibrous root dry mass were significantly greater for PN than for SP-PN plants.”
e1“SP-PN peanut plants”
Claim · model-written summary
Peanut harvest index was similar between treatments.
- Taxon
- peanutArachis hypogaeae1
- Treatment
- PNe1
- Outcome
- Harvest index (HI)e0
- Direction
- similare0
- Comparator
- SP-PNe1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Harvest index (HI) was similar for both treatments.”
e1“for PN than for SP-PN peanut plants”
Claim · model-written summary
Seedling root length tended to be lower with solution from the shared treatment.
- Taxon
- peanutArachis hypogaeae1
- Treatment
- nutrient solution from the SP-PN treatmente0
- Outcome
- Root lengthe0
- Direction
- lowere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Root length tended to be lower for seedlings grown in the nutrient solution from the SP-PN treatment.”
e1“SP-PN peanut plants”
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See all 204 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.