Optimizing fertilization under ridge-furrow rainfall harvesting system to improve foxtail millet yield and water use in a semiarid region, China

2020 ◽  
Vol 227 ◽  
pp. 105852
Author(s):  
Xudong Zhang ◽  
Muhammad Kamran ◽  
Fangjian Li ◽  
Xuanke Xue ◽  
Zhikuan Jia ◽  
...  
Keyword(s):  
Water Use ◽  
Foxtail Millet ◽  
Semiarid Region ◽  
Millet Yield

scholarly journals Evaluation of AquaCrop Model for Foxtail Millet (Setaria italica) Growth and Water Use with Plastic Film Mulching and No Mulching under Different Weather Conditions

Water ◽  
2018 ◽  
Vol 10 (7) ◽  
pp. 836 ◽  
Author(s):  
Da-Xin Guo ◽  
Chao-Fei Chen ◽  
Ping-Yi Guo ◽  
Xiang-Yang Yuan ◽  
Xu-Guang Xing ◽  
...  
Keyword(s):  
Water Use ◽  
Foxtail Millet ◽  
Weather Conditions ◽  
Setaria Italica ◽  
Plastic Film ◽  
Plastic Film Mulching ◽  
Aquacrop Model ◽  
Film Mulching

scholarly journals Optimized Regulated Deficit Irrigation Management for Watermelon Cultivation in a Semiarid Region

2021 ◽  
Vol 9 (2) ◽  
pp. 113
Author(s):  
Kelly Nascimento Leite ◽  
Daniel Fonseca de Carvalho ◽  
Jose Maria Tarjuelo Martin- Benito ◽  
Geocleber Gomes de Sousa ◽  
Alfonso Dominguez Padilla
Keyword(s):  
Water Use Efficiency ◽  
Water Use ◽  
Water Scarcity ◽  
Deficit Irrigation ◽  
Irrigation Management ◽  
Control Treatment ◽  
Water Volume ◽  
Semiarid Region ◽  
Regulated Deficit Irrigation ◽  
Use Efficiency

The present study aimed to validate the MOPECO crop simulation model and to determine a viable irrigation management for watermelon in the semiarid region of Northeast Brazil, using methodologies of optimized regulated deficit irrigation (ORDI) and constant deficit irrigation (CDI). The experiment was carried out during October to December 2013 and the second one from July to August 2014 in plots of land of producers in the Baixo Acaraú Irrigated Perimeter – Ceará, Brazil. Treatments were characterized by ORDI management (70, 80, 90% ETa/ETm ratio) and CDI management along the entire cycle (70, 80 and 90% ETm) and control treatment, irrigated with 100% of the water requirement of the crop (ETm). In terms of saving of water resources, the results showed that management with regulated deficit irrigation leads to favorable and economically viable results for the farmer, of water saving, especially in a situation of severe water scarcity, irrigation management with regulated water deficit (ORDI) can provide favorable and economically viable results for the farmer. The highest value of WUE (41.8 kg m-3) was obtained with the treatment of lowest water volume applied (352.1 L) in the second experiment, decreasing with the increase in the water volume used. The ORDI methodology represents a better water use efficiency for all treatments of deficit applied compared to CDI treatments. The difference of ORDI and CDI methodology provided an increase of up to 200% in the gross margin obtained with the exploration of the watermelon culture which represents a range of R$ 986.00 in profit in a situation of water scarcity, as in the case of the studied region, the strategy with water supply of 70% of ETa/ETm ratio regulated by phenological stage was recommended in order to obtain highest water use efficiency.

scholarly journals Water use and environmental parameters influence proso millet yield

2017 ◽  
Vol 212 ◽  
pp. 34-44 ◽  
Author(s):  
David C. Nielsen ◽  
Merle F. Vigil
Keyword(s):  
Water Use ◽  
Environmental Parameters ◽  
Proso Millet ◽  
Millet Yield

scholarly journals Precocity, yield and water-use efficiency of banana plants under planting densities and irrigation depths, in semiarid region

2019 ◽  
Vol 49 ◽  
Author(s):  
Marcelo Rocha dos Santos ◽  
Sérgio Luiz Rodrigues Donato ◽  
Diogo Barreto Magalhães ◽  
Manoel Pereira Cotrim
Keyword(s):  
Water Use Efficiency ◽  
Water Use ◽  
Block Design ◽  
Planting Density ◽  
Semiarid Region ◽  
Randomized Block Design ◽  
Brazilian Semiarid ◽  
Split Plot ◽  
Irrigation Depth ◽  
Use Efficiency

ABSTRACT Banana is a crop of major importance for the Brazilian semiarid region. However, because of the low availability and irregularities of the rainfall in this area, it is necessary to combine techniques that allow a higher water-use efficiency. This study aimed to evaluate the influence of different combinations of irrigation depths and planting densities on the precocity, yield and water-use efficiency of BRS Platina banana plants, in the semiarid region of the Bahia state, Brazil. A randomized block design with four replicates was used, in a split-plot arrangement. Irrigation depths of 55 %, 70 %, 85 % and 100 % of the crop evapotranspiration (ETc) were assigned to the plot, and the planting densities of 1,600 plants ha-1, 2,000 plants ha-1, 2,666 plants ha-1 and 3,333 plants ha-1 to the split-plot. The hands weight and number of fruits decreased in a linear way with the increase in the planting density (1,600 plants ha-1 to 3,333 plants ha-1) from 10.89 kg to 9.49 kg and from 97.16 to 89.86, respectively; whereas the hands yield (15.5 t ha-1 to 25.79 t ha-1) and the harvest period (442 to 455 days) increased. The number of fruits increased linearly from 89.46 to 98.08 with the irrigation depth of 55 % to 100 % of the ETc. The yield and water-use efficiency increased linearly as the planting density increased (1,600 plants ha-1 to 3,333 plants ha-1) from 5.14 to 8.60, while the water-use efficiency decreased with the irrigation depth from 7.97 to 5.50, conidering 55 % to 100 % of the ETc. It is possible to obtain higher yields and a higher water-use efficiency by using a higher planting density and irrigation levels below 100 % of the ETc.

Estimating water use of a black locust plantation by the thermal dissipation probe method in the semiarid region of Loess Plateau, China

2010 ◽  
Vol 15 (4) ◽  
pp. 241-251 ◽  
Author(s):  
Yi-Long Wang ◽  
Guo-Bin Liu ◽  
Tomonori Kume ◽  
Kyoichi Otsuki ◽  
Norikazu Yamanaka ◽  
...  
Keyword(s):  
Water Use ◽  
Loess Plateau ◽  
Black Locust ◽  
Probe Method ◽  
Thermal Dissipation ◽  
Semiarid Region ◽  
Thermal Dissipation Probe

Diurnal Course of Gas Exchange and Water Use Efficiency of Platycladus orientalis in the Semiarid Region of the Loess Plateau

2006 ◽  
Vol 1 (1) ◽  
pp. 118-123
Author(s):  
Jinghui Tian ◽  
Kangning He ◽  
Baitian Wang ◽  
Jianghong Guo ◽  
Weiqiang Zhang ◽  
...  
Keyword(s):  
Gas Exchange ◽  
Water Use Efficiency ◽  
Water Use ◽  
Loess Plateau ◽  
Semiarid Region ◽  
The Loess Plateau ◽  
Platycladus Orientalis ◽  
Diurnal Course ◽  
Use Efficiency

scholarly journals Evapotranspiration, crop coefficient and water use efficiency of onion cultivated under different irrigation depths

2022 ◽  
Vol 26 (3) ◽  
pp. 219-225
Author(s):  
Wendy K. Matsunaga ◽  
Vicente de P. R. da Silva ◽  
Victória P. Amorim ◽  
Eliton S. G. Sales ◽  
Sílvia M. Dantas ◽  
...  
Keyword(s):  
Water Use Efficiency ◽  
Water Use ◽  
Field Experiments ◽  
Crop Coefficient ◽  
Northeastern Brazil ◽  
Semiarid Region ◽  
Crop Evapotranspiration ◽  
Maturation Stages ◽  
Use Efficiency ◽  
Crop Coefficients

ABSTRACT This study aimed to determine crop evapotranspiration through the soil water balance, the crop coefficient and water use efficiency of the onion (Allium cepa L.) in a system with four irrigation regimes, cultivated in the semiarid region of northeastern Brazil. Two field experiments were carried out during the rainy and dry periods of the region in 2018, using the treatments of 100% (T1), 75% (T2), 50% (T3) and 25% (T4) of the reference evapotranspiration for daily water replacement and five replicates for each treatment. It was verified that crop evapotranspiration varies according to the water availability in the soil; however, the highest water use efficiency occurred for the T3 treatment. The T1 treatment obtained the highest estimated yield, 43.86 tons ha-1, while T4 obtained 13.47 tons ha-1, the lowest estimated yield among the treatments, and this difference was statistically significant (p ≤ 0.05) by F test. The crop coefficients obtained were 0.68, 0.89, 0.99 and 0.73 for the initial, vegetative, bulbing and maturation stages, respectively.

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