Abstract
Abstract Corn ( Zea mays L.) grown under the semiarid conditions of the Central Great Plains requires supplemental irrigation to obtain maximum yields. This practice has become increasingly less profitable as the cost of application of irrigation water has risen. It may prove to be more cost effective to reduce the water requirement of corn by limiting the vegetative development of the plant. Two anti‐gibberellin, seed‐applied, experimental plant growth regulators (PGRs), BAS 106. .W and BAS 110. .W, were used on corn grown under low and high levels of irrigation in a 2‐yr (1984 and 1985) field study on a Rago silt loam soil (fine, montmorillonitic, mesic Pachic Argiustolls) to determine the effect of these PGRs on vegetative growth, water use, water stress, grain yield, and yield components. The PGRs were applied at three rates in both years (0, 100, and 200 mg a.i. kg −1 of BAS 106. .W in 1984 and 0, 125, and 250 mg a.i. kg −1 of BAS 110. .W in 1985). Increasing application rates of the PGRs caused a significant reduction in early season plant height, leaf area index (monitored in 1985 only), and dry matter accumulation (monitored in 1985 only), resulting in reduced early season evapotranspiration in both years. The PGR treatments reduced plant water stress during silking and early grain fill, particularly under the low irrigation treatment. The changes in plant growth and development associated with the PGRs resulted in a 9 and 16% increase in grain yield in 1984 and 1985, respectively, under the low irrigation treatment and a 7 and 9% reduction in grain yield in 1984 and 1985, respectively, under the high irrigation treatment. Therefore, reducing early season vegetative growth with the PGRs proved to be advantageous to productivity under water stress and counterproductive under nonlimiting water conditions.
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 7
Claim · model-written summary
Increasing PGR application rates significantly reduced early season plant height, leaf area index and dry matter accumulation in corn.
- Taxon
- Corn
Zea mays subsp. mayse0 - Treatment
- Increasing application rates of the PGRse1
- Outcome
- early season plant height, leaf area index (monitored in 1985 only), and dry matter accumulatione1
- Direction
- reductione1
- Setting
- Central Great Plainse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Corn ( Zea mays L.) grown under the semiarid conditions of the Central Great Plains”
e1“Increasing application rates of the PGRs caused a significant reduction in early season plant height, leaf area index (monitored in 1985 only), and dry matter accumulation”
Claim · model-written summary
PGR treatments reduced early season evapotranspiration in corn in both years.
- Taxon
- CornZea mays subsp. mayse0
- Treatment
- Increasing application rates of the PGRse1
- Outcome
- early season evapotranspiratione2
- Direction
- reducede2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Corn ( Zea mays L.) grown under the semiarid conditions of the Central Great Plains”
e1“Increasing application rates of the PGRs”
e2“resulting in reduced early season evapotranspiration in both years”
Claim · model-written summary
PGR treatments reduced plant water stress during silking and early grain fill, particularly under low irrigation.
- Taxon
- CornZea mays subsp. mayse0
- Treatment
- PGR treatmentse1
- Outcome
- plant water stresse1
- Direction
- reducede1
- Qualifier
- particularly under the low irrigation treatmente1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Corn ( Zea mays L.) grown under the semiarid conditions of the Central Great Plains”
e1“The PGR treatments reduced plant water stress during silking and early grain fill, particularly under the low irrigation treatment”
Claim · model-written summary
Under low irrigation the PGRs increased corn grain yield by 9% in 1984.
- Taxon
- CornZea mays subsp. mayse0
- Treatment
- PGRse1
- Outcome
- grain yielde2
- Direction
- increasee2
- Value
- 9e2
- Qualifier
- 1984e2
- Setting
- low irrigation treatmente2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Corn ( Zea mays L.) grown under the semiarid conditions of the Central Great Plains”
e1“The changes in plant growth and development associated with the PGRs”
e2“a 9 and 16% increase in grain yield in 1984 and 1985, respectively, under the low irrigation treatment”
Claim · model-written summary
Under low irrigation the PGRs increased corn grain yield by 16% in 1985.
- Taxon
- CornZea mays subsp. mayse0
- Treatment
- PGRse1
- Outcome
- grain yielde2
- Direction
- increasee2
- Value
- 16%e2
- Qualifier
- 1985e2
- Setting
- low irrigation treatmente2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Corn ( Zea mays L.) grown under the semiarid conditions of the Central Great Plains”
e1“The changes in plant growth and development associated with the PGRs”
e2“a 9 and 16% increase in grain yield in 1984 and 1985, respectively, under the low irrigation treatment”
Claim · model-written summary
Under high irrigation the PGRs reduced corn grain yield by 7% in 1984.
- Taxon
- CornZea mays subsp. mayse0
- Treatment
- PGRse1
- Outcome
- grain yielde2
- Direction
- reductione2
- Value
- 7e2
- Qualifier
- 1984e2
- Setting
- high irrigation treatmente2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Corn ( Zea mays L.) grown under the semiarid conditions of the Central Great Plains”
e1“The changes in plant growth and development associated with the PGRs”
e2“a 7 and 9% reduction in grain yield in 1984 and 1985, respectively, under the high irrigation treatment”
Claim · model-written summary
Under high irrigation the PGRs reduced corn grain yield by 9% in 1985.
- Taxon
- CornZea mays subsp. mayse0
- Treatment
- PGRse1
- Outcome
- grain yielde2
- Direction
- reductione2
- Value
- 9e2
- Qualifier
- 1985e2
- Setting
- high irrigation treatmente2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Corn ( Zea mays L.) grown under the semiarid conditions of the Central Great Plains”
e1“The changes in plant growth and development associated with the PGRs”
e2“a 7 and 9% reduction in grain yield in 1984 and 1985, respectively, under the high irrigation treatment”
The same questions in other papers
class · yield · Zea mays (maize)Positive and negative results
30 papers in the same direction as this paper · 3 in the opposite direction
- negative
- no effect
- negative
30 papers more in this group
See all 34 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.