Tomato yield and water use efficiency – coupling effects between growth stage specific soil water deficits

2015 ◽  
Vol 65 (5) ◽  
pp. 460-469
Author(s):  
Si Chen ◽  
Zhen-jiang Zhou ◽  
Mathias N. Andersen ◽  
Tian-tian Hu
Keyword(s):  
Water Use Efficiency ◽  
Soil Water ◽  
Water Use ◽  
Growth Stage ◽  
Coupling Effects ◽  
Water Deficits ◽  
Tomato Yield ◽  
Use Efficiency

Timing irrigation to suit citrus phenology: a means of reducing water use without compromising fruit yield and quality?

2007 ◽  
Vol 47 (1) ◽  
pp. 71 ◽  
Author(s):  
R. J. Hutton ◽  
J. J. Landsberg ◽  
B. G. Sutton
Keyword(s):  
Water Stress ◽  
Water Use Efficiency ◽  
Soil Water ◽  
Water Use ◽  
Fruit Size ◽  
Fruit Growth ◽  
Fruit Yield ◽  
Juice Quality ◽  
Water Deficits ◽  
Use Efficiency

This paper addresses the question of whether a citrus crop has the same need for water at all stages of development or whether it is possible to withhold water at times when the crop is less sensitive to water stress, thus, reducing total water use and improving water use efficiency while still maintaining yield. To answer this question water applied by irrigation was reduced by up to 33% relative to standard full irrigation by extending the intervals between applications from 3 to 17 days during fruit growth stages II and III in the annual growth cycle. As expected, the longer intervals resulted in greater depletion in soil moisture and significant water stress developed as soil water deficits approached the lower limits of plant available water. Stressed trees exhibited mean pre-dawn water potential (ψl) values of –0.93 MPa and midday ψl values decreased to between –2.0 and –2.5 MPa. Periodic soil water deficits in late summer and autumn reduced shoot growth, but fruit yield was unaffected, and there was no evidence of reduced canopy size. Water use efficiency (mass of fruit produced per unit water applied) improved, but fruit growth was extremely sensitive to moisture stress and extended irrigation intervals in summer and autumn reduced fruit size. Fruit juice quality was also affected, as there was an increase in both total soluble solids and juice acidity, but the practical consequences of these were limited because there were only small changes to the sugar : acid ratios. This work has demonstrated that deficient irrigation during summer can be used to manipulate growth and reduce water use, but at the risk of a marginal reduction in fruit size.

Water Use, Grain Yield, and Osmoregulation in Wheat

1986 ◽  
Vol 13 (4) ◽  
pp. 523 ◽  
Author(s):  
JM Morgan ◽  
AG Condon
Keyword(s):  
Grain Yield ◽  
Water Use Efficiency ◽  
Soil Water ◽  
Water Use ◽  
Harvest Index ◽  
High Water ◽  
Total Water ◽  
Water Deficits ◽  
Turgor Maintenance ◽  
Use Efficiency

Genotypic differences in turgor maintenance in wheat were shown to be associated with differences in grain yield in the field at both high and Low water deficits. High water deficits were produced by growing plants in field plots using water stored in the soil at sowing, and excluding rain with a rain cover. At low water deficits plants received rainfall, and irrigation was supplied before and immediately after sowing, at tillering, at jointing, at ear emergence, and during grain filling. Yield differences were analysed in terms of harvest index, water use, and water use efficiency. Water use was calculated from changes in soil water contents. At high water deficits all three factors were associated with differences in turgor maintenance. However, only the variations in water use and harvest index could be logically associated with differences in turgor maintenance. Analysis of the soil water extraction data showed that the differences in water use efficiency were due solely to differences in water use at depth while surface water losses were the same, i.e. the ratio of transpiration to soil evaporation would have been higher in low-osmoregulating genotypes. At low water deficits, no differences were observed in harvest index, though there were non-significant correlations between turgor maintenance and total water use efficiency or total water use. A similar result was obtained when the water use and yield data were related to osmoregulation measurements made in the glasshouse. It is therefore concluded that effects of turgor maintenance or osmoregulation on grain yield were primarily associated with differences in water use which were, in turn, due to differences in water extraction at soil depths between 25 and 150 cm.

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

Effect of growth stage based irrigation on soil water extraction and water use efficiency of spring safflower cultivars

2016 ◽  
Vol 177 ◽  
pp. 432-439 ◽  
Author(s):  
Sukhbir Singh ◽  
Sangamesh V. Angadi ◽  
Kulbhushan K. Grover ◽  
Rolston St. Hilaire ◽  
Sultan Begna
Keyword(s):  
Water Use Efficiency ◽  
Soil Water ◽  
Water Use ◽  
Growth Stage ◽  
Water Extraction ◽  
Use Efficiency ◽  
Soil Water Extraction

scholarly journals Yield and water use of cherry tomato under water availability and potassium doses

2018 ◽  
Vol 22 (5) ◽  
pp. 326-331 ◽  
Author(s):  
Adriano B. Pacheco ◽  
Tonny J. A. da Silva ◽  
Edna M. Bonfim-Silva ◽  
Hamilton A. W. Castro ◽  
Marcio Koetz
Keyword(s):  
Water Use Efficiency ◽  
Soil Water ◽  
Water Use ◽  
Water Availability ◽  
Soil Water Availability ◽  
Cherry Tomato ◽  
Soil Water Tension ◽  
Tomato Yield ◽  
Use Efficiency ◽  
Water Tension

ABSTRACT The objective of this study was to evaluate the yield and water use of cherry tomatoes under soil water availability and potassium (K) doses in a greenhouse. The experiment was conducted in randomized blocks in a 52 fractional factorial design, corresponding to five levels of water availability and five K doses, with 13 combinations (4-0; 4-250; 4-500; 14-125; 14-375; 24-0; 24-250; 24-500; 34-125; 34-375; 44-0; 44-250; 44-500) (kPa-mg dm-3) and four replicates. A drip irrigation system with semi-automated irrigation control was used. The analyzed variables were shoot dry matter, number of fruits, yield, water consumption and water use efficiency. Highest cherry tomato yield occurs at soil water tension of 24 kPa and K dose of 290 mg dm-3. Soil water tension of 44 kPa and K dose of 290 mg dm-3 allow for higher water use efficiency in cherry tomato. Cherry tomato yield and water use are influenced by soil water availability and K doses in greenhouse.

scholarly journals Yield, water use efficiency, and yield response factor in carrot crop under different irrigation depths

2016 ◽  
Vol 46 (7) ◽  
pp. 1145-1150 ◽  
Author(s):  
Daniel Fonseca de Carvalho ◽  
Dionizio Honório de Oliveira Neto ◽  
Luiz Fernando Felix ◽  
José Guilherme Marinho Guerra ◽  
Conan Ayade Salvador
Keyword(s):  
Water Use Efficiency ◽  
Soil Water ◽  
Water Use ◽  
Block Design ◽  
Time Domain Reflectometry ◽  
Yield Response ◽  
Response Factor ◽  
Use Efficiency ◽  
The Mean ◽  
Yield Response Factor

ABSTRACT: The aim of the present study was to evaluate the effect of different irrigation depths on the yield, water use efficiency (WUE), and yield response factor (Ky) of carrot (cv. 'Brasília') in the edaphoclimatic conditions of Baixada Fluminense, RJ, Brazil. Field trials were conducted in a Red-Yellow Argisol in the 2010-2011period. A randomized block design was used, with 5 treatments (depths) and 4 replicates. Depths were applied by drippers with different flow rates, and the irrigation was managed by time domain reflectometry (TDR) technique. The reference (ETo) and crop (ETc) evapotranspiration depths reached 286.3 and 264.1mm in 2010, and 336.0 and 329.9mm in 2011, respectively. The root yield varied from 30.4 to 68.9t ha-1 as a response to treatments without irrigation and 100% replacement of the soil water depth, respectively. Values for WUE in the carrot crop varied from 15 to 31kg m-3 and the mean Ky value was 0.82. The mean values for Kc were obtained in the initial (0.76), intermediate (1.02), and final (0.96) stages. Carrot crop was influenced by different water depths (treatments) applied, and the highest value for WUE was obtained for 63.4% of soil water replacement.

Sign in / Sign up

Export Citation Format

Share Document