Article
Agronomy
Xin Hui, Yudong Zheng, Haijun Yan
Summary: The selection of suitable low-pressure sprinklers can reduce energy consumption, wind drift, and evaporation losses. Water distribution above and below the crop canopy varies, with differences increasing as maize grows. Factors such as sprinkler type and growth stage affect water distribution.
AGRICULTURAL WATER MANAGEMENT
(2021)
Article
Engineering, Civil
Shahin Solgi, Seyed Hamid Ahmadi, Ali Reza Sepaskhah, Mohsen Edalat
Summary: Water-saving through deficit irrigation management is an effective approach to improve water productivity in sustainable agriculture. Crop modeling can be used to evaluate the impact of different irrigation scenarios on yield and water productivity. This study assessed the effects of surface and sprinkler irrigation under different climatic scenarios and irrigation strategies. The results showed that reducing irrigation water by 30% improved water productivity in different growing seasons. Additionally, sprinkler irrigation can increase water productivity and sustain crop production in normal and wet years, but may have negative effects in other conditions. It is important to synchronize irrigation strategies with rainfall characteristics in areas with erratic rainfalls to enhance water productivity and maintain crop production.
JOURNAL OF HYDROLOGY
(2022)
Article
Energy & Fuels
Waqar Ahmed Qureshi, Qingjiang Xiang, Zhengdian Xu, Zhizun Fan
Summary: The distribution of water deteriorates when the operating pressure of an impact sprinkler (IS) decreases to some level. The aeration jet method is utilized to form an aeration impact sprinkler (AIS), aiming to improve the uniformity of water distribution under low pressure. The results showed that the AIS had a greater coefficient of uniformity (CU) than the IS, resulting in reaching the specified value in the IS standard under low operating pressure. The uniformity of water distribution changed with the operating pressure and slightly decreased with the increase in combination spacing.
FRONTIERS IN ENERGY RESEARCH
(2023)
Article
Agronomy
Pan Tang, Chao Chen
Summary: The study investigates the influence of frequency and duration of drive spoon-dispersed water jet on water distribution and uniformity. The experiment demonstrates that increased working pressure and decreased distance between counterweight-installed position and rotation axis lead to an increased frequency and decreased duration of the water jet. Adjusting the distance from the counterweight improves application rates and increases distribution uniformity.
Article
Environmental Sciences
Abdelmoneim Z. Mohamed, R. Troy Peters, Abid Sarwar, Behnaz Molaei, Don McMoran
Summary: A computer model was developed to simulate the varying depths of water applied to the ground due to the intermittent movements of a typical center pivot. The study found that factors such as wetted radius, timer setting, cycle time, and travel speed all affect irrigation uniformity. It is recommended to adjust the run time based on specific conditions to reduce machinery wear.
Article
Agronomy
Susan A. O'Shaughnessy, Hyungmin Rho, Paul D. Colaizzi, Fekede Workneh, Charles M. Rush
Summary: This study quantifies the impact of zebra chip (ZC) disease on potato crop response and investigates the relationship between irrigation level and disease severity. The results show that ZC disease significantly reduces tuber yield and crop water productivity. Irrigation does not alleviate the severity of the disease, suggesting that withholding irrigation in affected areas could be beneficial.
AGRICULTURAL WATER MANAGEMENT
(2022)
Article
Agricultural Engineering
R. Chen, H. Li, J. Wang, C. Chen
Summary: The experiment results show that sprinklers with larger nozzle diameters and higher working pressures can produce greater coefficients of discharge, and the wetted radius gradually increases with the increase in working pressure and nozzle diameter. The water distribution differs between FSPSB and FSPSY, with FSPSB providing a more discrete distribution and FSPSY offering a more uniform distribution.
TRANSACTIONS OF THE ASABE
(2021)
Article
Agronomy
Hesham S. Ghazzawy, Abu Elnasr E. Sobaih, Hani A. Mansour
Summary: This research examines the role of micro-irrigation systems on date palm production and quality in a semi-arid region. The results show that drip irrigation is more efficient than sprinkler irrigation for date palms, particularly in semi-arid regions. Increasing water applied and water deficit can both significantly affect yield and quality of date palms.
Article
Agronomy
Abdelaziz M. Okasha, Nehad Deraz, Adel H. Elmetwalli, Salah Elsayed, Mayadah W. Falah, Aitazaz Ahsan Farooque, Zaher Mundher Yaseen
Summary: The study assessed the impact of different irrigation techniques on cauliflower, with drip irrigation showing the highest yield and water productivity, while alternate furrow irrigation proved to be an effective option for water saving.
Article
Environmental Sciences
Marinos Eliades, Adriana Bruggeman, Hakan Djuma, Christos Christofi, Christoph Kuells
Summary: This study introduced a dynamic K-c approach based on LAI observations to improve water balance computations. The use of dynamic K-c resulted in estimates with low bias, and irrigation efficiency could be enhanced by reducing irrigation amounts and increasing frequency.
Article
Agronomy
Abbas Haghshenas, Yahya Emam, Ali Reza Sepaskhah, Mohsen Edalat
Summary: A two-year field experiment in Iran explored the use of wheat cultivar mixtures with different ripening patterns to mitigate post-anthesis water stress. Results showed that under stressful conditions, heterogeneity in ripening pattern of mixtures diminished, leading to reduced differences in grain yields and agronomic characteristics. While some casual beneficial effects were observed, they were not consistent across all conditions.
EUROPEAN JOURNAL OF AGRONOMY
(2021)
Article
Environmental Sciences
Hexiang Zheng, Biyu Wang, Xuesong Cao, Jiabin Wu, Haofang Yan, Delong Tian
Summary: Determining the optimal irrigation amount and buried depth of subsurface drip irrigation laterals is crucial for enhancing crop yield and irrigation water efficiency in arid regions. A field trial was conducted to investigate the effects of irrigation volumes and burial depths on water consumption, yield and water productivity of alfalfa. The results revealed that increasing the irrigation amount led to significant increases in alfalfa water consumption, yield and water productivity, while increasing the buried depth of drip irrigation laterals resulted in a decrease in these parameters. Based on the study, it is recommended to apply 22.5 to 30.0 mm of irrigation amount, with a frequency of 5 to 7 days, and a buried drip irrigation lateral depth of 20 cm for alfalfa cultivation in the study area.
Article
Agronomy
Hope Njuki Nakabuye, Daran Rudnick, Kendall C. DeJonge, Tsz Him Lo, Derek Heeren, Xin Qiao, Trenton E. Franz, Abia Katimbo, Jiaming Duan
Summary: This study evaluated the performance of a simplified crop canopy temperature measurement method in irrigation scheduling for maize, and found that it had a strong correlation with the conventional Crop Water Stress Index and soil water depletion. The method showed slight differences compared to other commonly used scheduling methods in terms of grain yield and Irrigation Water Productivity. Considering the crop growth stage could further improve scheduling.
AGRICULTURAL WATER MANAGEMENT
(2022)
Article
Agronomy
Danni Yang, Sien Li, Mousong Wu, Hanbo Yang, Wenxin Zhang, Ji Chen, Chunyu Wang, Siyu Huang, Ruoqing Zhang, Yunxuan Zhang
Summary: Drip irrigation has been widely implemented in arid agricultural regions to mitigate water shortage and improve water productivity. It was found that drip irrigation increased yield and water productivity, while decreasing leaf area index. The promotion of root development and increase in soil temperature were key factors contributing to the improved crop activity.
EUROPEAN JOURNAL OF AGRONOMY
(2023)
Article
Agronomy
Rui Chen, Hong Li, Jian Wang, Zhuoyang Song
Summary: This study investigated the effects of water application rate and droplet kinetic energy on soil runoff, infiltration, and erosion in sprinkler irrigation. It found that these two parameters are critical indicators for predicting runoff occurrence time, final runoff rate, and infiltration depth.
AGRICULTURAL WATER MANAGEMENT
(2023)
Article
Agronomy
Jiaxin Sun, Yanli Yang, Peng Qi, Guangxin Zhang, Yao Wu
Summary: The optimal allocation of agricultural water and land resources is crucial for farmers' economic benefits, carbon sequestration, and water resource conservation. This study developed a novel water-carbon-economy coupling model and applied it to a real farm, demonstrating its effectiveness in achieving the optimal allocation of water and land resources. The model balances economic, environmental, and social benefits.
AGRICULTURAL WATER MANAGEMENT
(2024)
