scholarly journals Contributions of Capacity for Soil Water Extraction and Water Use Efficiency to Maintenance of Dry matter Production in Rice subjected to Drought.

1996 ◽  
Vol 65 (4) ◽  
pp. 652-662 ◽  
Author(s):  
Tohru KOBATA ◽  
Tomomi OKUNO ◽  
Takanobu YAMAMOTO
Keyword(s):  
Water Use Efficiency ◽  
Soil Water ◽  
Water Use ◽  
Dry Matter ◽  
Water Extraction ◽  
Dry Matter Production ◽  
Matter Production ◽  
Use Efficiency ◽  
Soil Water Extraction

Effects of used plastic film disposal patterns on dry matter production and water use efficiency of oil flax in arid areas

2013 ◽  
Vol 20 (11) ◽  
pp. 1457-1463
Author(s):  
Bing WU ◽  
Yu-Hong GAO ◽  
Li ZHAO ◽  
Yong-Jun CHEN ◽  
Peng LING ◽  
...  
Keyword(s):  
Water Use Efficiency ◽  
Water Use ◽  
Dry Matter ◽  
Dry Matter Production ◽  
Arid Areas ◽  
Plastic Film ◽  
Matter Production ◽  
Use Efficiency

Discrimination in Carbon Isotopes of Leaves Correlates With Water-Use Efficiency of Field-Grown Peanut Cultivars

1988 ◽  
Vol 15 (6) ◽  
pp. 815 ◽  
Author(s):  
GC Wright ◽  
KT Hubick ◽  
GD Farquhar
Keyword(s):  
Water Use Efficiency ◽  
Water Use ◽  
Dry Matter ◽  
Dry Matter Production ◽  
Dry Matter Yield ◽  
Strong Negative Correlation ◽  
Matter Production ◽  
Whole Plant ◽  
Use Efficiency ◽  
The Relationship

Variation in water-use efficiency (W, g of total dry matter produced/kg water used), and its correlation with cultivar isotope discrimination in leaves (Δ) was assessed in peanut plants grown in small canopies in the field. Plants were grown in separate minilysimeters that were both embedded in the ground and positioned above the crop. Differences among cultivars were found in W and � and the relationship between W and Δ was compared for plants grown in open and closed canopies. Genetic variability in W in plants grown in the field under non-limiting water conditions was demonstrated, with Tifton-8, of Virginia habit, having the highest W (3.71 g/kg) and Rangkasbitung, an Indonesian cultivar of Spanish habit, the lowest (2.46 g/ kg). Variability in W was due to variation in total dry matter production more than that of water use. A strong negative correlation was found between Δ and W, and also between Δ and total dry matter. The relationship between whole plant W, including roots, and Δ was stronger than that between shoot W, without roots and Δ. The improvement occurred because of variation among cultivars in the root to shoot ratio. This highlights the importance of taking account of root dry matter in studies concerning W. There were significant differences in W and Δ between plants in pots above-ground compared to pots in the ground, with above-ground plants having significantly lower values of both W and Δ. The ranking of W and Δ among cultivars was not affected by the contrast in environment, which suggests these parameters are under strong genetic control. Total above-ground dry matter yield at maturity was negatively correlated with Δ, while pod yield was not. It appears a negative association between harvest index and Δ may exist; however not all cultivars used in this and other studies follow this response. Both water-use efficiency, Wand total dry matter production are negatively correlated with Δ in leaves of peanut plants grown in small canopies in the field. Measurement of Δ may prove a useful trait for selecting cultivars with improved W and total dry matter yield under field conditions.

Effects of subsoiling and supplemental irrigation on dry matter production and water use efficiency in wheat

2013 ◽  
Vol 33 (7) ◽  
pp. 2260-2271 ◽  
Author(s):  
郑成岩 ZHENG Chengyan ◽  
于振文 YU Zhenwen ◽  
张永丽 ZHANG Yongli ◽  
王东 WANG Dong ◽  
石玉 SHI Yu ◽  
...  
Keyword(s):  
Water Use Efficiency ◽  
Water Use ◽  
Dry Matter ◽  
Dry Matter Production ◽  
Supplemental Irrigation ◽  
Matter Production ◽  
Use Efficiency

Growth, development, and yield of three oilseed Brassica species in a water-limited environment

1994 ◽  
Vol 34 (1) ◽  
pp. 93 ◽  
Author(s):  
GJ Lewis ◽  
N Thurling
Keyword(s):  
Water Use Efficiency ◽  
Water Use ◽  
Seed Yield ◽  
Dry Matter ◽  
Soil Evaporation ◽  
Dry Matter Production ◽  
Open Flower ◽  
Matter Production ◽  
Use Efficiency ◽  
Oilseed Brassicas

Representative lines of Brassica napus, B. campestris, and B. juncea were compared at East Beverley in the central wheatbelt of Western Australia on the basis of agronomic and physiological characters known to affect seed yield. Seed yield of B. juncea line 81794 was 32% higher than the locally adapted B. napus cv. Wesbrook (76 g/m2). Yields of B. napus cv. Eureka and the 2 B. campestris populations were not significantly different from Wesbrook and were lower than 81794. The higher yield of 81794 was due to higher dry matter production, particularly after first open flower. Yield superiority of 81794 was not associated with any single yield component. Under the water-stressed conditions of this experiment, seed yield had a strong positive correlation with dry matter production after first open flower. Differences in dry matter production during this period were due to variation in crop growth rates among the lines, not to variations in duration of the period. There was no relationship between flowering time and seed yield in this experiment, suggesting earlier reproductive development is not obligatory for high yield of oilseed Brassicas in low rainfall mediterranean environments. Total water use throughout the season differed little among populations, but there were differences in water use patterns over time. The greater rate of dry matter accumulation of 81794 is due to its ability to extract more water from the soil profile after anthesis; postanthesis water use of 81794 was 20% higher than that of Wesbrook. Water use efficiency of 81794 was also higher than that of Wesbrook, because soil evaporation comprised a smaller proportion of evapotranspiration. Further increases in seed yield of oilseed brassicas in this environment should be possible if higher postanthesis water use could be combined with lower soil evaporation and improved water use efficiency.

Response of four grain legumes to water stress in south-eastern Queensland. III. Dry matter production, yield and water use efficiency

1982 ◽  
Vol 33 (3) ◽  
pp. 511 ◽  
Author(s):  
RJ Lawn
Keyword(s):  
Water Stress ◽  
Water Use Efficiency ◽  
Water Use ◽  
Seed Yield ◽  
Water Availability ◽  
Dry Matter ◽  
Seasonal Pattern ◽  
Dry Matter Production ◽  
Matter Production ◽  
Use Efficiency

Dry matter production, yield and water use efficiency of soybean (Glycine max), black gram (Vigna mungo), green gram (V. radiata) and cowpea (V. unguiculata) under irrigated, rain-fed fallowed and rain-fed double-cropped culture were evaluated at Dalby in south-east Queensland. Differential species responses to cultural treatments were related to strategies of growth and water use in response to water stress. The major effect of differences between strategies related to differences in the short term rate of soil water use, which together with the seasonal pattern of water availability influenced both the total, and seasonal pattern of water use. Regardless of strategy adopted, dry matter production was primarily a function of water use. However, seed yield and water use efficiency for seed yield depended on the seasonal pattern of water use. The relative agronomic success of the various strategies therefore depended on the seasonal profiles of water availability. Some implications of the differences in stress response strategy for adaptation of these species to agricultural environments are discussed.

scholarly journals Soil water extraction pattern and water use efficiency of spring canola under growth-stage-based irrigation management

2020 ◽  
Vol 239 ◽  
pp. 106232
Author(s):  
Krishna B. Katuwal ◽  
Youngkoo Cho ◽  
Sukhbir Singh ◽  
Sangamesh V. Angadi ◽  
Sultan Begna ◽  
...  
Keyword(s):  
Water Use Efficiency ◽  
Soil Water ◽  
Water Use ◽  
Growth Stage ◽  
Irrigation Management ◽  
Water Extraction ◽  
Spring Canola ◽  
Extraction Pattern ◽  
Use Efficiency ◽  
Soil Water Extraction

WATER USE EFFICIENCY OF CORN, SUNFLOWER AND WHEAT WITH LIMITING SOIL MOISTURE

1983 ◽  
Vol 63 (3) ◽  
pp. 747-749 ◽  
Author(s):  
D. G. GREEN ◽  
D. W. L. READ
Keyword(s):  
Soil Moisture ◽  
Water Use Efficiency ◽  
Water Use ◽  
Dry Matter ◽  
Dry Matter Production ◽  
Wheat Cultivars ◽  
Matter Production ◽  
Use Efficiency ◽  
Limited Moisture

Corn was superior to wheat in water use efficiency (WUE) calculated by using total dry matter production. Manitou wheat under adequate soil moisture was more efficient in water use than Pitic 62 or Wascana wheats. All wheat cultivars showed improved WUE with limited moisture. Sunflowers were the most adaptive species at changing WUE in response to available moisture.Key words: Water use efficiency

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