Abstract
Field experiment was conducted during rabi season for two years (2014-15 and 2015-16) on wheat cultivar HD- 2967 in a sandy loam soil (Inceptisol) for simulation of evapotranspiration, crop water use efficiency (WUE) and yield of wheat under different tillage (Conventional tillage (CT) and no tillage (NT)), residue (maize residue @ 5 t ha-1 (R+) and without residue (R0)) and nitrogen (60, 120 and 180 kg N ha-1, representing 50% (N60), 100% (N120) and 150% (N180) of the recommended dose of nitrogen for wheat (Triticum aestivum L.), respectively management practices using DSSAT (v 4.6) model. Experimental data of the years 2014-15 and 2015-16 was used for the calibration and validation of the model, respectively. The results showed no significant difference in grain and biomass yield due to tillage and crop residue mulch but it increased significantly with increase in the N levels. The WUE of wheat was also not influenced by tillage but increased significantly with the increase in N levels. The DSSAT model could satisfactorily simulate grain yield (R2 = 0.759), biomass yield (R2= 0.728) and seasonal ET (R2= 0.904) in wheat but simulation of WUE (R2= 0.414) was not significant under different tillage, residue and nitrogen management with acceptable level of accuracy.
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Claims 9
Claim · model-written summary
Tillage did not significantly change wheat grain or biomass yield.
- Taxon
- wheat
Triticum aestivume1 - Treatment
- tillagee0
- Outcome
- grain and biomass yielde0
- Direction
- no significant differencee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“no significant difference in grain and biomass yield due to tillage”
e1“yield of wheat”
Claim · model-written summary
Crop residue mulch did not significantly change wheat grain or biomass yield.
- Taxon
- wheatTriticum aestivume1
- Treatment
- crop residue mulche0
- Outcome
- grain and biomass yielde0
- Direction
- no significant differencee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“no significant difference in grain and biomass yield due to tillage and crop residue mulch”
e1“yield of wheat”
Claim · model-written summary
Higher nitrogen levels significantly increased wheat grain and biomass yield.
- Taxon
- wheatTriticum aestivume1
- Treatment
- N levelse0
- Outcome
- grain and biomass yielde0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“grain and biomass yield due to tillage and crop residue mulch but it increased significantly with increase in the N levels”
e1“yield of wheat”
Claim · model-written summary
Tillage did not influence wheat water use efficiency.
- Taxon
- wheatTriticum aestivume0
- Treatment
- tillagee0
- Outcome
- WUEe0
- Direction
- not influencede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The WUE of wheat was also not influenced by tillage”
Claim · model-written summary
Wheat water use efficiency increased significantly with nitrogen level.
- Taxon
- wheatTriticum aestivume0
- Treatment
- N levelse0
- Outcome
- WUEe0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The WUE of wheat was also not influenced by tillage but increased significantly with the increase in N levels”
Claim · model-written summary
DSSAT satisfactorily simulated wheat grain yield with R2 = 0.759.
- Taxon
- wheatTriticum aestivume1
- Outcome
- grain yielde0
- Value
- R2 = 0.759e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The DSSAT model could satisfactorily simulate grain yield (R2 = 0.759)”
e1“yield of wheat”
Claim · model-written summary
DSSAT satisfactorily simulated wheat biomass yield with R2= 0.728.
- Taxon
- wheatTriticum aestivume1
- Outcome
- biomass yielde0
- Value
- R2= 0.728e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“biomass yield (R2= 0.728)”
e1“yield of wheat”
Claim · model-written summary
DSSAT satisfactorily simulated seasonal evapotranspiration with R2= 0.904.
- Taxon
- wheatTriticum aestivume1
- Outcome
- seasonal ETe0
- Value
- R2= 0.904e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“seasonal ET (R2= 0.904)”
e1“yield of wheat”
Claim · model-written summary
DSSAT simulation of wheat water use efficiency was not significant, with R2= 0.414.
- Taxon
- wheatTriticum aestivume1
- Outcome
- WUEe0
- Value
- R2= 0.414e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“simulation of WUE (R2= 0.414) was not significant”
e1“yield of wheat”
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