Claim · model-written summary
CWUE increased from rainfed 2.03 to FIT 2.44 kg m-3 in 2010.
- Treatment
- FITe0
- Outcome
- CWUEe0
- Direction
- increasede0
- Value
- 2.44 kg m-3e0
- Qualifier
- 2.03 kg m-3e0
- Comparator
- rainfed treatmente0
Zea maysNot reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleSetting
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The CWUE increased with irrigation from 1.89 kg m-3 for the rainfed treatment to 2.58 kg m-3 for the 60% FIT in 2009 and from 2.03 kg m-3 for the rainfed treatment to 2.44 kg m-3 for the FIT in 2010.”
t0“Maize”
Title
K. Djaman; S. Irmak Transactions of the ASABE 2012. doi:10.13031/2013.42262
Other claims from this paper (19)
- Association Soil water extraction increased with irrigation amounts.
- Association Soil water extraction generally decreased with depth.
- Observation Topsoil supplied 39% of seasonal extraction under rainfed conditions.
- Observation Topsoil supplied 42% of seasonal extraction under 50% FIT.
- Observation Topsoil supplied 48% of seasonal extraction under 60% FIT.
- Observation Topsoil supplied 48% of seasonal extraction under 75% FIT.
- Observation Topsoil supplied 51% of seasonal extraction under FIT.
- Intervention effect Rainfed maize extracted more water from the 0.60-0.90 m layer, contributing 19% of total extraction.
- Intervention effect Rainfed maize extracted more water from the 0.90-1.2 m layer, contributing 17% of total extraction.
- Observation The deepest soil layer contributed about 5% to 8% of seasonal extraction.
- Observation Water efficiencies varied between years with seasonal water supply, extraction, climate and yield.
- Intervention effect CWUE increased from rainfed 1.89 to 60% FIT 2.58 kg m-3 in 2009.
- Association CWUE correlated strongly with evapotranspiration, irrigation and grain yield, with the reported R2 values.
- Association IWUE and ETWUE decreased with evapotranspiration and irrigation in 2009, but increased in 2010.
- Observation IWUE ranged from FIT 3.63 to 50% FIT 5.9 kg m-3 in 2009, and from 50% FIT 2.52 to 75% FIT 3.24 kg m-3 in 2010.
- Intervention effect 60% FIT produced the largest average IWUE, 4.33 kg m-3.
- Observation ETWUE ranged from FIT 4.65 to 50% FIT 6.09 kg m-3 in 2009 and from 50% FIT 5.94 to FIT 6.73 kg m-3 in 2010.
- Observation 60% and 75% FIT had similar or greater CWUE and ETWUE than FIT; ETWUE peaked at about 580 mm ETa in 2009 and 634 mm in 2010, below full irrigation ETa.
- Recommendation The authors recommend 60% and 75% FIT as viable irrigation strategies with comparable productivity and 40% or 25% less irrigation water, respectively, under the studied conditions.