Determing water use and crop coefficients of drip-irrigated cotton in south Xinjiang of China under various irrigation amounts

2022 ◽  
Vol 176 ◽  
pp. 114376
Author(s):  
Xianghao Hou ◽  
Junliang Fan ◽  
Fucang Zhang ◽  
Wenhui Hu ◽  
Fulai Yan ◽  
...  
Keyword(s):  
Water Use ◽  
Crop Coefficients ◽  
Xinjiang Of China

scholarly journals Water Use and Crop Coefficients in Sprinkler Irrigated Rice

2009 ◽  
Vol 4 (2) ◽  
pp. 47 ◽  
Author(s):  
Antonino Spanu ◽  
Antonio Murtas ◽  
Francesca Ballone
Keyword(s):  
Water Use ◽  
Irrigated Rice ◽  
Crop Coefficients

scholarly journals Determining Water Use and Crop Coefficients of Five Woody Landscape Plants

2006 ◽  
Vol 24 (3) ◽  
pp. 160-165 ◽  
Author(s):  
G. Niu ◽  
D.S. Rodriguez ◽  
R. Cabrera ◽  
C. McKenney ◽  
W. Mackay
Keyword(s):  
Leaf Area ◽  
Water Use ◽  
Culture System ◽  
Growth Parameters ◽  
Growth Index ◽  
Crop Coefficient ◽  
Nerium Oleander ◽  
Culture Systems ◽  
Unit Leaf ◽  
Crop Coefficients

Abstract The water use and crop coefficient of five woody landscape species were determined by growing the shrubs both in 56-liter (15 gal) drainage lysimeters and in above-ground 10-liter containers (#3). Water use per plant, crop coefficient and overall growth parameters differed by species and culture system. Of the five species tested, Buddleia davidii ‘Burgundy’ and Nerium oleander ‘Hardy Pink’ had higher water use per plant in the lysimeters than in the containers. Water use per plant for Abelia grandiflora ‘Edward Goucher’, Euonymus japonica and Ilex vomitoria ‘Pride of Houston’ was the same for the two culture systems. Crop coefficient and growth index of A. grandiflora, E. japonica, and I. vomitoria was similar between the two systems. The growth index of B. davidii and N. oleander was much higher in the lysimeters than in the containers. Abelia grandiflora and E. japonica had more growth in the containers than in the lysimeters while I. vomitoria had slightly larger leaf area in the lysimeters than in the containers. The culture system did not affect the water use per unit leaf area of all species. Therefore, our results indicated that by quantifying the leaf area, the plant water use in the two culture systems is exchangeable.

scholarly journals Performance of methods for estimation of table beet water requirement in Alagoas

2018 ◽  
Vol 22 (3) ◽  
pp. 189-193 ◽  
Author(s):  
Daniella P. dos Santos ◽  
Célia S. dos Santos ◽  
Leiliane M. da Silva ◽  
Márcio A. L. dos Santos ◽  
Cícero G. dos Santos
Keyword(s):  
Water Use ◽  
Standard Method ◽  
Water Scarcity ◽  
Performance Index ◽  
Reference Evapotranspiration ◽  
Irrigation Management ◽  
Crop Evapotranspiration ◽  
Abstract Optimization ◽  
Crop Coefficients ◽  
Drainage Lysimeter

ABSTRACT Optimization of water use in agriculture is fundamental, particularly in regions where water scarcity is intense, requiring the adoption of technologies that promote increased irrigation efficiency. The objective of this study was to evaluate evapotranspiration models and to estimate the crop coefficients of beet grown in a drainage lysimeter in the Agreste region of Alagoas. The experiment was conducted at the Campus of the Federal University of Alagoas - UFAL, in the municipality of Arapiraca, AL, between March and April 2014. Crop evapotranspiration (ETc) was estimated in drainage lysimeters and reference evapotranspiration (ETo) by Penman-Monteith-FAO 56 and Hargreaves-Samani methods. The Hargreaves-Samani method presented a good performance index for ETo estimation compared with the Penman-Monteith-FAO method, indicating that it is adequate for the study area. Beet ETc showed a cumulative demand of 202.11 mm for a cumulative reference evapotranspiration of 152.00 mm. Kc values determined using the Penman-Monteith-FAO 56 and Hargreaves-Samani methods were overestimated, in comparison to the Kc values of the FAO-56 standard method. With the obtained results, it is possible to correct the equations of the methods for the region, allowing for adequate irrigation management.

On-farm measurement of the water use and productivity of maize

2008 ◽  
Vol 48 (3) ◽  
pp. 274 ◽  
Author(s):  
K. L. Greenwood ◽  
G. N. Mundy ◽  
K. B. Kelly
Keyword(s):  
Dairy Cows ◽  
Water Content ◽  
Soil Water ◽  
Soil Water Content ◽  
Water Use ◽  
Water Productivity ◽  
Weather Data ◽  
Local Conditions ◽  
High Yields ◽  
Crop Coefficients

Maize, as a C4 species, is likely to use water more productively than the perennial ryegrass and white clover pastures typically grown for dairy cows in northern Victoria. However, only estimates of water use by irrigated maize crops are available for this region. We measured the growth and water use of three commercial maize crops used for silage in northern Victoria. Crops under centre pivot irrigation were monitored in 2003–04 (Spray 1) and 2004–05 (Spray 2). A border-check irrigated crop (Border-check) was monitored in 2004–05. The Spray 1 crop was irrigated 30 times and received 782 mm of rainfall and irrigation. The crop yielded 22 t DM/ha, giving a water productivity of 28 kg DM/ha.mm (including irrigation, rainfall and change in soil water content). In the cooler, wetter summer of 2004–05, the water productivity was 34 kg DM/ha.mm for the Spray 2 crop and 30 kg DM/ha.mm for the Border-check crop. Crop evapotranspiration was estimated from weather data and a daily soil water balance was computed according to FAO 56. The estimated and measured changes in soil water content were in good agreement and indicated that the basal crop coefficients in the model (Kcb = 1.15 during the mid-season, before correction for non-standard humidity and wind speed) were appropriate to local conditions. Maize grown for silage in northern Victoria has higher water productivity than pastures. However, high yields are required to make it economically viable compared with alternative forages for dairy cows. These data will assist dairy farmers to select the optimum forage mix for their enterprises.

Water use, crop coefficients, and irrigation management criteria for camelina production in arid regions

2010 ◽  
Vol 29 (1) ◽  
pp. 27-43 ◽  
Author(s):  
D. J. Hunsaker ◽  
A. N. French ◽  
T. R. Clarke ◽  
D. M. El-Shikha
Keyword(s):  
Water Use ◽  
Arid Regions ◽  
Irrigation Management ◽  
Crop Coefficients

scholarly journals Assessment of Consumptive use and Water use Efficiency of Okra (abelmoschus esculentus l. Moench) Using Minilysimeters in Makurdi, Benue State, Nigeria

2019 ◽  
Vol 2 (1) ◽  
Keyword(s):  
Water Use Efficiency ◽  
Water Use ◽  
Potential Evapotranspiration ◽  
Block Design ◽  
Water Capacity ◽  
Consumptive Use ◽  
Available Water ◽  
Available Water Capacity ◽  
Use Efficiency ◽  
Crop Coefficients

This study was carried out during the 2015 and 2016 dry cropping seasons at the Teaching and Research Farm of the University of Agriculture, Makurdi, Southern Guinea Savanna Agroecology of Nigeria. The objectives were to determine the consumptive use and water use efficiency of okra using the Lysimetric technique. This involved the use of twelve (12) locally fabricated minilysimeters housing three (3) irrigation treatments corresponding to 50, 75 and 100% of the soil available water capacity replicated four (4) times and laid out in a Randomized Complete Block Design (RCBD). The Blaney-Criddle formula which is latitude dependent derives its strength from a 5-year accumulated temperature, data was used to predict the potential evapotranspiration of okra. The crop evapotranspiration is equivalent to the crop water use. Results show that the consumptive use estimated varied from 263.52 – 1,944.90 mm, water use efficiency was from 22.73 – 2.28 kg/ha/mm and crop coefficients of 0.36 – 2.28 corresponding to 50 – 100% (Low to High) soil available water capacity (SAWC) respectively. Okra performed better under low soil available water capacity.

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