Evaluation of dynamic uniformity and application efficiency of mobile drip irrigation

Oker, Tobias E.; Kisekka, Isaya; Sheshukov, Aleksey Y.; Aguilar, Jonathan; Rogers, Danny H.

doi:10.1007/s00271-019-00648-0

Cited by 10 publications

(6 citation statements)

References 29 publications

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“…The reduced rate of MDI applied about 25% less than the MESA and 31% less than the full rate MDI but continued to further reduce yield. This, combined with visual observations of corrugations across the alfalfa in the MDI span, may suggest that there was poor irrigation distribution throughout the rootzone, which has also been recently noted in a study on soil water redistribution, where MDI demonstrated poor horizontal uniformity (Oker et al., 2020). Future work that may be useful is collecting soil moisture data beneath and between the drip lines at shallow depths.…”

Section: Resultssupporting

confidence: 62%

“…Filtration of MDI is critical and requires removal of finer contaminants than LEPA or MESA. High WAE has been measured in these systems, such as in Georgia, where MDI had a WAE of 98.4% (Oker et al., 2020). In Kansas, MDI was compared with low elevation spray application (LESA) in a corn ( Zea mays L.) field trial where mini‐lysimeters measured 35% less WDEL losses with MDI (Kisekka et al., 2016).…”

Section: Introductionmentioning

confidence: 99%

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On‐farm evaluations of overhead irrigation sprinkler packages at full and reduced rates

Holt,

Yost,

Creech

et al. 2023

Soil Science Soc of Amer J

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Irrigation is a critical resource in meeting the global demand for food, feed, fiber, and fuel. One water optimization method with high potential and interest is the use of more efficient irrigation systems. In many areas where pivots are used, the most common sprinkler package is mid‐elevation sprinkler application (MESA), which typically has application efficiencies near 80%. Low‐energy precision application (LEPA) and mobile drip irrigation (MDI) can have greater than 95% application efficiency. The objective of this research was to evaluate the ability of LEPA and MDI to maintain crop yield and quality in alfalfa (Medicago sativa L.) and silage corn (Zea mays L.), at similar and reduced irrigation rates as MESA. The intent of the reduced rate was to determine if the decreased application losses with LEPA and MDI could result in sustained crop production with a 20% irrigation rate reduction. Actual reductions ranged from 5% to 55% depending on system and site due to equipment constraints. Data from two farms in Utah during 2018–2020 provided evidence that these systems can often maintain yield and forage quality with 5%–55% less applied water. However, there were also many instances where yield was reduced by LEPA and MDI, even with similar application rates to MESA. This indicates that the two higher efficiency systems will not save water in all cases and that the application system must be carefully evaluated in small on‐farm trials over multiple years for its ability to succeed in specific field conditions.

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Section: Resultssupporting

confidence: 62%

Section: Introductionmentioning

confidence: 99%

On‐farm evaluations of overhead irrigation sprinkler packages at full and reduced rates

Holt,

Yost,

Creech

et al. 2023

Soil Science Soc of Amer J

View full text Add to dashboard Cite

show abstract

“…Whereas, the increase in pressure gave the best coefficient uniformity of distribution of drippers, uniformity distribution and less proportion of variance, and thus the best application efficiency of water. Subsurface drip requires less pressure and therefore less energy consumption and less cost of operation [22] and [23].…”

Section: Resultsmentioning

confidence: 99%

Impact of Evaluation of Different Irrigation Methods with Sensor System on Water Consumptive Use and Water Use Efficiency for Maize Yield

Thamer¹,

Nassif²,

Almaeini³

et al. 2021

JWARP

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“…The adoption of conservation practices such as no till, crop intensification and diversification, or rotation with pastures, will have positive effects on soil health (Balota et al 2003, Acosta-Martínez et al 2004, Davis et al 2012, Cotton et al 2013, Rosenzweig et al 2018 and can help to minimize the negative impacts of irrigation retirement. In addition, producers may adopt alternative strategies to manage decreasing water supplies, including the adoption of more efficient irrigation technologies (Murley et al 2018, Oker et al 2020, deficit irrigation (Rudnick et al 2019), or the transition to crop rotations with lower water demands (Araya et al 2017, Schlegel et al 2017. These management decisions would also affect crop yields, economic profitability, and soil microbial communities (Araya et al 2017, Manning et al 2018, Flynn et al 2021.…”

Section: Soil Microbial Responses To Irrigation Retirementmentioning

confidence: 99%

Plant and soil microbial responses to irrigation retirement in semiarid cropping systems

Núñez¹,

Ball²,

Schipanski³

2022

Environ. Res. Commun.

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Water scarcity limits irrigated agriculture, and there is an increasing frequency of situations where farmers must transition from irrigated to dryland cropping systems. This transition poses several challenges, and it is necessary to understand the changes in crop productivity and soil health for the design of viable cropping systems. Our objective was to compare the impact of irrigation retirement on crop production and soil microbial dynamics under the two major crops of the semiarid High Plains. In a formerly irrigated field, we installed a transition experiment that consisted of two irrigation managements, irrigated and non-irrigated (retired), under two cropping systems: continuous maize and continuous winter wheat. Lower soil moisture after irrigation retirement decreased plant biomass production in both crops, with a higher effect on maize (2 to 6-fold decrease) than on wheat (20% less aboveground biomass production). In both crops, irrigation retirement affected crop development in the order grain yield > aboveground biomass > belowground biomass. Soil microbial communities were less affected by irrigation retirement than the evaluated crops and changes were concentrated in the maize agroecosystem. After three seasons, the high decrease in maize productivity and soil moisture resulted in 50% less extracellular enzyme activity in the dryland treatment, but without consistent effects on microbial biomass or community composition assessed by phospholipid fatty acids. Winter wheat appears as a viable option not only to sustain crop production but also to minimize the negative impacts of irrigation retirement on soil health. However, root production was lower in wheat than in maize, which may affect the long-term evolution of soil organic carbon.

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Evaluation of dynamic uniformity and application efficiency of mobile drip irrigation

Cited by 10 publications

References 29 publications

On‐farm evaluations of overhead irrigation sprinkler packages at full and reduced rates

On‐farm evaluations of overhead irrigation sprinkler packages at full and reduced rates

Impact of Evaluation of Different Irrigation Methods with Sensor System on Water Consumptive Use and Water Use Efficiency for Maize Yield

Plant and soil microbial responses to irrigation retirement in semiarid cropping systems

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