Abstract
Abstract The efficient recovery by crops of added nutrients and water is influenced by plant rooting characteristics. Published data on the relationship of irrigation water and root distribution of certain crops grown on sandy soils in humid regions are lmited and needed. This field study was a part of an investigation on three soil types to determine the effect of plant‐water stress and irrigation on root distribution of corn ( Zea mays L.), soybeans [ Glycine max (L.) Merr.], and peanuts ( Arachis hypogaea L.). The basic irrigation plan was to replenish the water deficit in only the top 30 to 60 cm of the soil profile. Depth of wetting and the degree of soil water depletion below the irrigated soil layer varied with irrigation frequency and amount of water per application. Although treatments were not the same in the four experiments reported, the major part of the study involved four water management treatments: 1) no irrigation; 2) light, infrequent irrigation; 3) light, frequent irrigation; and 4) medium, infrequent irrigation. Seed yields were obtained at maturity and root length measurements were made at full canopy. Root lengths per unit volume of soil were measured by the Line intercept method. Yields of corn and peanuts increased with total amount of irrigation water used, but there was no yield response to irrigation in the soybean experiment. Peanut and soybean root growth (root length per unit area to a depth of 150 cm) was not affected by water management. In the corn experiments, irrigation increased the length of roots in the 150 cm soil profile. The largest root length value was found in the light, infrequent irrigation treatment. Crops vary in rooting response to plant‐water stress and irrigation strategy. Limited rooting of corn under water stress very likely decreases the efficiency of water and fertilizer use.
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Claims 8
Claim · model-written summary
Corn yield increased with irrigation amount.
- Taxon
- corn
Zea mays subsp. mayse0 - Treatment
- irrigation watere0
- Outcome
- Yieldse0
- Direction
- increasede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Yields of corn and peanuts increased with total amount of irrigation water used”
Claim · model-written summary
Peanut yield increased with irrigation amount.
- Taxon
- peanuts
Arachis hypogaeae0 - Treatment
- irrigation watere0
- Outcome
- Yieldse0
- Direction
- increasede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Yields of corn and peanuts increased with total amount of irrigation water used”
Claim · model-written summary
Soybean yield did not respond to irrigation.
- Taxon
- soybean
Glycine maxe0 - Treatment
- irrigatione0
- Outcome
- yielde0
- Direction
- no yield responsee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“there was no yield response to irrigation in the soybean experiment.”
Claim · model-written summary
Peanut root growth was unaffected by water management.
- Taxon
- PeanutArachis hypogaeae0
- Treatment
- water managemente0
- Outcome
- root growthe0
- Direction
- not affectede0
- Qualifier
- to a depth of 150 cme0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Peanut and soybean root growth (root length per unit area to a depth of 150 cm) was not affected by water management.”
Claim · model-written summary
Soybean root growth was unaffected by water management.
- Taxon
- soybeanGlycine maxe0
- Treatment
- water managemente0
- Outcome
- root growthe0
- Direction
- not affectede0
- Qualifier
- to a depth of 150 cme0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Peanut and soybean root growth (root length per unit area to a depth of 150 cm) was not affected by water management.”
Claim · model-written summary
Irrigation increased corn root length within the 150 cm soil profile.
- Taxon
- cornZea mays subsp. mayse0
- Treatment
- irrigatione0
- Outcome
- length of rootse0
- Direction
- increasede0
- Qualifier
- 150 cm soil profilee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In the corn experiments, irrigation increased the length of roots in the 150 cm soil profile.”
Claim · model-written summary
Light, infrequent irrigation produced the greatest root length.
- Taxon
- cornZea mays subsp. mayst0
- Treatment
- light, infrequent irrigatione0
- Outcome
- root lengthe0
- Direction
- largeste0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The largest root length value was found in the light, infrequent irrigation treatment.”
t0“Corn”
Claim · model-written summary
Limited corn rooting under water stress likely decreases water and fertilizer use efficiency.
- Taxon
- cornZea mays subsp. mayse0
- Organ / stage
- rootinge0
- Outcome
- efficiency of water and fertilizer usee0
- Direction
- decreasese0
- Qualifier
- very likelye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Limited rooting of corn under water stress very likely decreases the efficiency of water and fertilizer use.”
The same questions in other papers
light · growth · Zea mays (maize)Positive and negative results
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- negative
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See all 57 papers →irrigation · growth · Zea mays (maize)Positive and negative results
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See all 289 papers →irrigation · yield · Glycine max (soybean)Positive and negative results
78 papers in the same direction as this paper · 264 in the opposite direction
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See all 343 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.