Abstract
Abstract The aims of this study were: (i) to evaluate the agronomic characteristics of thin‐grain rice genotypes with high yield potential under irrigation conditions; (ii) to quantify water productivity (WP) in thin‐grain rice genotypes, based on crop evapotranspiration (ET C ) and irrigation and surface drainage control. Eight genotypes were planted: four varieties, two promising lines and hybrid Clearfield XL745 and IRGA. Direct dry seeding was carried out mechanically at a density of 80 kg ha ‐1 for the varieties and 32 kg ha ‐1 for the hybrid; drainage was performed every 9.3 m inside of the border. The results indicate that there are significant differences ( P > 0.05) among genotypes for grain yield and its components, except for lodging. The varieties and promising rice lines evaluated expressed good productive capacity, but they were surpassed by 19% by the average productivity recorded by the variety IRGA and the hybrid Clearfield. The variation in water demand based on ET C is evident in the optimal irrigation depth applications of 264 mm for the hybrid and 318 mm for the intermediate‐cycle genotypes. The border irrigation method with drainage troughs significantly increases water productivity based on the applied irrigation (WP I ), averaging 2.0 kg m ‐3 . © 2018 John Wiley & Sons, Ltd.
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Claims 5
Claim · model-written summary
Rice genotypes reportedly differed significantly in grain yield and components, except lodging, despite the stated P > 0.05.
- Taxon
- Rice
Oryza sativat0 - Material
- genotypese0
- Outcome
- grain yield and its componentse0
- Qualifier
- except for lodginge0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“there are significant differences ( P > 0.05) among genotypes for grain yield and its components, except for lodging”
t0“Rice”
Claim · model-written summary
Varieties and promising lines had good productive capacity but averaged 19% below IRGA and Clearfield.
- Taxon
- riceOryza sativae0
- Material
- varieties and promising rice linese0
- Outcome
- productive capacitye0
- Direction
- surpassede0
- Value
- 19%e0
- Comparator
- variety IRGA and the hybrid Clearfielde0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The varieties and promising rice lines evaluated expressed good productive capacity, but they were surpassed by 19% by the average productivity recorded by the variety IRGA and the hybrid Clearfield.”
Claim · model-written summary
Optimal irrigation depth was 264 mm for the rice hybrid.
- Taxon
- RiceOryza sativat0
- Material
- hybride0
- Outcome
- optimal irrigation depth applicationse0
- Value
- 264 mme0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“optimal irrigation depth applications of 264 mm for the hybrid”
t0“Rice”
Claim · model-written summary
Optimal irrigation depth was 318 mm for intermediate-cycle rice genotypes.
- Taxon
- RiceOryza sativat0
- Material
- intermediate‐cycle genotypese0
- Outcome
- optimal irrigation depth applicationse1
- Value
- 318 mme0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“318 mm for the intermediate‐cycle genotypes”
e1“optimal irrigation depth applications”
t0“Rice”
Claim · model-written summary
Border irrigation with drainage troughs significantly increased rice water productivity, averaging 2.0 kg m ‐3.
- Taxon
- RiceOryza sativat0
- Treatment
- border irrigation method with drainage troughse0
- Outcome
- water productivity based on the applied irrigatione0
- Direction
- increasese0
- Value
- 2.0 kg m ‐3e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The border irrigation method with drainage troughs significantly increases water productivity based on the applied irrigation (WP I ), averaging 2.0 kg m ‐3 .”
t0“Rice”
The same questions in other papers
irrigation · physiology: water · Oryza sativa (rice)Positive and negative results
349 papers in the same direction as this paper · 25 in the opposite direction · 5 reporting no difference from an alternative
- negative
- positive
- positive
376 papers more in this group
See all 380 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.