Claim · model-written summary
The larger 2 mm/day deficit after tasseling reduced irrigation amounts by 26% at the second irrigation level.
- Taxon
- corn
Zea mays subsp. mayse0 - Treatment
- larger 2 mm/day daily deficit after tasselinge1
- Outcome
- irrigation amountse1
- Direction
- reducede1
- Value
- 26e1
Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleComparatorSettingQualifier
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“irrigated corn (Zea mays L.)”
e1“The larger 2 mm/day daily deficit after tasseling reduced yields by 7, 9, and 15% for the three respective irrigation levels and reduced irrigation amounts by 19, 26, and 25%”
Title
Irrigation Scheduling with Planned Soil Water Depletion
F. R. Lamm; D. H. Rogers; H. L. Manges Transactions of the ASAE 1994. doi:10.13031/2013.28232
Other claims from this paper (18)
- Association Plant-available soil water at physiological maturity was related linearly to irrigation amounts in corn.
- Association Plant-available soil water at physiological maturity was reduced by only 25 mm for each 100 mm reduction in irrigation.
- Intervention effect A small daily deficit of 1 mm/day after tasseling reduced corn yield by 7% under heavy irrigation management.
- Intervention effect A small daily deficit of 1 mm/day after tasseling reduced corn yield by 1% under normal irrigation management.
- Intervention effect A small daily deficit of 1 mm/day after tasseling reduced corn yield by 3% under deficit irrigation management.
- Intervention effect The 1 mm/day deficit saved approximately 12% of irrigation at the first (heavy) irrigation management level.
- Intervention effect The 1 mm/day deficit saved approximately 9% of irrigation at the second (normal) irrigation management level.
- Intervention effect The 1 mm/day deficit gave approximately 0% irrigation savings at the third (deficit) irrigation management level.
- Intervention effect The 1 mm/day deficit generally resulted in slight reductions in available soil water at physiological maturity.
- Intervention effect In some cases the 1 mm/day deficit had little effect on total seasonal irrigation amount but only shifted the irrigation event to a later date.
- Intervention effect The larger 2 mm/day deficit after tasseling reduced corn yield by 7% at the first (heavy) irrigation level.
- Intervention effect The larger 2 mm/day deficit after tasseling reduced corn yield by 9% at the second (normal) irrigation level.
- Intervention effect The larger 2 mm/day deficit after tasseling reduced corn yield by 15% at the third (deficit) irrigation level.
- Intervention effect The larger 2 mm/day deficit after tasseling reduced irrigation amounts by 19% at the first irrigation level.
- Intervention effect The larger 2 mm/day deficit after tasseling reduced irrigation amounts by 25% at the third irrigation level.
- Association Corn yields were related linearly to irrigation and water use, with reduced irrigation or water use reflected by yield reductions.
- Intervention effect Water use efficiencies were similar whether or not planned soil water depletion was used.
- Recommendation The authors conclude that irrigation scheduling with planned soil water depletion was not justified from a water conservation standpoint.