scholarly journals Temporal and Local Heterogeneities of Water Table Depth under Different Agricultural Water Management Conditions

Water ◽  
2021 ◽  
Vol 13 (16) ◽  
pp. 2148
Author(s):  
Jonathan A. Lafond ◽  
Silvio J. Gumiere ◽  
Virginie Vanlandeghem ◽  
Jacques Gallichand ◽  
Alain N. Rousseau ◽  
...  
Keyword(s):  
Water Management ◽  
Water Table ◽  
Cropping Systems ◽  
Irrigation Management ◽  
Sprinkler Irrigation ◽  
Water Table Depth ◽  
Management Systems ◽  
Integrated Water Management ◽  
Growing Seasons ◽  
Good Drainage

Integrated water management has become a priority for cropping systems where subirrigation is possible. Compared to conventional sprinkler irrigation, the controlling water table can lead to a substantial increase in yield and water use efficiency with less pumping energy requirements. Knowing the spatiotemporal distribution of water table depth (WTD) and soil properties should help perform intelligent, integrated water management. Observation wells were installed in cranberry fields with different water management systems: Bottom, with good drainage and controlled WTD management; Surface, with good drainage and sprinkler irrigation management; Natural, without drainage, or with imperfectly drained and conventional sprinkler irrigation. During the 2017–2020 growing seasons, WTD was monitored on an hourly basis, while precipitation was measured at each site. Multi-frequential periodogram analysis revealed a dominant periodic component of 40 days each year in WTD fluctuations for the Bottom and Surface systems; for the Natural system, periodicity was heterogeneous and ranged from 2 to 6 weeks. Temporal cross correlations with precipitation show that for almost all the sites, there is a 3 to 9 h lag before WTD rises; one exception is a subirrigation site. These results indicate that automatic water table management based on continuously updated knowledge could contribute to integrated water management systems, by using precipitation-based models to predict WTD.

Four Nitrogen Levels and Three Water Management Systems on Rice Yield and Nitrogen Recovery

1969 ◽  
Vol 70 (3) ◽  
pp. 197-205
Author(s):  
Rafael F. Olmeda ◽  
Fernando Abruña
Keyword(s):  
Water Management ◽  
Grain Yield ◽  
Management System ◽  
Rice Yield ◽  
Irrigation Management ◽  
The Other ◽  
Nitrogen Recovery ◽  
Management Systems ◽  
Water Management System ◽  
Nitrogen Levels

The permanently flooded, and the dry seeded and afterwards permanently flooded treatments produced higher grain yield than intermittent flooding treatments at all nitrogen levels. Rice responded up to 125 kg N/ha irrespective of the water management system. Recovery of applied nitrogen was higher when permanently flooded. The largest proportion of extracted nitrogen occurred in the stems and the lowest in the roots. Flowering was delayed 12 days in the intermittent flooding system at all nitrogen levels as compared to the other two irrigation management systems.

scholarly journals Effects of Irrigation Nonuniformity on Nitrogen and Water Use Efficiencies in Shallow-rooted Vegetable Cropping Systems

HortScience ◽  
1997 ◽  
Vol 32 (3) ◽  
pp. 446B-446
Author(s):  
B. Sanden ◽  
L. Wu ◽  
J.P. Mitchell ◽  
L. Pan ◽  
R. Strohman
Keyword(s):  
Water Use ◽  
Irrigation Water ◽  
Water Distribution ◽  
Cropping Systems ◽  
Irrigation Management ◽  
Sprinkler Irrigation ◽  
Initial Stage ◽  
Irrigation Uniformity ◽  
Distribution Uniformity ◽  
Set Up

This research tests the hypothesis that decreasing lateral spacing from 45 to 35 feet in solid-set sprinkler systems increases the uniformity of irrigation water distribution and improves water and N fertilizer use efficiencies. Three different spacings between sprinkler laterals (35', 40', and 45') were set up in three blocks in a 60-acre commercial carrot field in Western Kern County in California's San Joaquin Valley. Determinations of irrigation water distribution uniformity, yields, crop water use, plant growth, and nitrate leaching were made. Mean sprinkler distribution uniformities (DU) were found to be 80.6%, 78.1%, and 86% for the 35-, 40-, and 45-ft spacings, respectively. Total carrot yield and quality did not differ significantly among the three spacings, corroborating the finding that irrigation uniformities were similar among the treatments. Although the three lateral spacings evaluated in this initial experiment did not result in major differences in irrigation uniformity, total yields, or quality, the findings of this initial stage of our research are significant. They point to the need for new assessments of currently used protocols for evaluating sprinkler irrigation management of water and nitrogen fertilizer if they can be confirmed by repeated trials in coming years.

scholarly journals Alleviating peatland fire risk using water management trinity and community involvement

2021 ◽  
Vol 914 (1) ◽  
pp. 012037
Author(s):  
N I Fawzi ◽  
I Z Qurani ◽  
R Darajat
Keyword(s):  
Water Management ◽  
Water Table ◽  
Community Involvement ◽  
Swot Analysis ◽  
Negative Impact ◽  
Fire Risk ◽  
Water Table Depth ◽  
Water Regulation ◽  
Soil Drainage

Abstract Conventionally, agriculture in peatland requires soil drainage to enable the crops to grow. This often results in being over-drained and makes it vulnerable to fires. The risk can be contained by applying water management trinity (WMT), which creates canals for water regulation and reservoirs instead of drainage. This study aimed to examine, elaborate, and validate the WMT effect and community involvement in minimizing fire risk in peatland. We collected water table depth every two weeks from 1 April 2017 to 31 December 2020 in a coconut plantation under WMT and employed Focus Groups Discussions (FGD) in five villages in Pulau Burung District, Indragiri Hilir Regency, Riau. The result showed that the existence of WMT for more than three decades has successfully maintained water table depth between 30 and 70 cm that is influenced by seasons. The fire occurrence based on the FGD interview has been validated with hotspot data from NASA’s FIRMS. This research also employed SWOT analysis to examine the local fire mitigation strategy. The progress in lowering fire incidents and risk should be intervened with finding long-term solutions to increase farmers’ capability on sustainable agriculture. Our finding reveals that the main strength in lowering fire risk is people’s awareness in every village on the negative impact of land burning, along with the existence of WMT.

scholarly journals Distinguishing Capillary Fringe Reflection in a GPR Profile for Precise Water Table Depth Estimation in a Boreal Podzolic Soil Field

Water ◽  
2020 ◽  
Vol 12 (6) ◽  
pp. 1670
Author(s):  
Chameera Illawathure ◽  
Mumtaz Cheema ◽  
Vanessa Kavanagh ◽  
Lakshman Galagedara
Keyword(s):  
Water Table ◽  
Shallow Groundwater ◽  
Depth Estimation ◽  
Water Table Depth ◽  
Soil Conditions ◽  
Capillary Fringe ◽  
Growing Seasons ◽  
Sampling Volume ◽  
Highly Correlated ◽  
Using Data

Relative permittivity and soil moisture are highly correlated; therefore, the top boundary of saturated soil gives strong reflections in ground-penetrating radar (GPR) profiles. Conventionally in shallow groundwater systems, the first dominant reflection comes from the capillary fringe, followed by the actual water table. The objective of this study was to calibrate and validate a site-specific relationship between GPR-estimated depth to the capillary fringe (DCF) and measured water table depth (WTDm). Common midpoint (CMP) GPR surveys were carried out in order to estimate the average radar velocity, and common offset (CO) surveys were carried out to map the water table variability in the 2017 and 2018 growing seasons. Also, GPR sampling volume geometry with radar velocities in different soil layers was considered to support the CMP estimations. The regression model (R2 = 0.9778) between DCF and WTDm, developed for the site in 2017, was validated using data from 2018. A regression analysis between DCF and WTDm for the two growing seasons suggested an average capillary height of 0.741 m (R2 = 0.911, n = 16), which is compatible with the existing literature under similar soil conditions. The described method should be further developed over several growing seasons to encompass wider water table variability.

scholarly journals A New Method for Rapid Measurement of Canal Water Table Depth Using Airborne LiDAR, with Application to Drained Peatlands in Indonesia

Water ◽  
2020 ◽  
Vol 12 (5) ◽  
pp. 1486
Author(s):  
Ronald Vernimmen ◽  
Aljosja Hooijer ◽  
Dedi Mulyadi ◽  
Iwan Setiawan ◽  
Maarten Pronk ◽  
...  
Keyword(s):  
Water Management ◽  
Data Collection ◽  
Water Table ◽  
Grid Cell ◽  
Soil Surface ◽  
Field Measurements ◽  
Water Table Depth ◽  
Airborne Lidar ◽  
Lidar Data ◽  
Canal Water

Water management in lowland areas usually aims to keep water tables within a narrow range to avoid flooding and drought conditions. A common water management target parameter is the depth of the canal water table below the surrounding soil surface. We demonstrated a method that rapidly determines canal water table depth (CWD) from airborne LiDAR data. The water table elevation was measured as the minimum value determined in a grid of 100 m × 100 m applied to a 1 m × 1 m digital terrain model (DTM), and the soil surface was calculated as the median value of values in each grid cell. Results for areas in eastern Sumatra and West Kalimantan, Indonesia, were validated against 145 field measurements at the time of LiDAR data collection. LiDAR-derived CWD was found to be accurate within 0.25 m and 0.5 m for 86% and 99% of field measurements, respectively, with an R2 value of 0.74. We demonstrated the method for CWD conditions in a drained peatland area in Central Kalimantan, where we found CWD in the dry season of 2011 to be generally below −1.5 and often below −2.5 m indicating severely overdrained conditions. We concluded that airborne LiDAR can provide an efficient and rapid mapping tool of CWD at the time of LiDAR data collection, which can be cost-effective especially where LiDAR data or derived DTMs are already available. The method can be applied to any LiDAR-based DTM that represents a flat landscape that has open water bodies.

scholarly journals STUDI MUKA AIR TANAH GAMBUT DAN IMPLIKASINYA TERHADAP DEGRADASI LAHAN PADA BEBERAPA KUBAH GAMBUT DI KABUPATEN SIAK

2018 ◽  
Vol 4 (2) ◽  
Author(s):  
Hasmana Soewandita
Keyword(s):  
Water Management ◽  
Water Table ◽  
Water Table Depth ◽  
Land Clearing ◽  
Virgin Forest ◽  
Construction Activity ◽  
Control Failure ◽  
Peatland Degradation ◽  
Water Table Control

Overdrainaged phenomena on peat land after reclamated for agriculture area is indicated water management/water table control failure.  Water table depth of peat land on virgin forest that has been  reclamated is low (0.15 m) and this condition on Zamrud peat dome.  Water table dept on old reclamated peat land has better condition than peat land after new reclamated as plantation area. Peatland degradation showed overdrainage phenomena has potential happened on land clearing and  canal construction activity.  This condition have effected to water table dept  about 1 m. Overdrainaged impact on peatland has caused  fire of peatland.  For example this condition occured in  Siak Kecil peat dome and Kandis peat dome.  Keywords : peat dome, water table

scholarly journals Performances of Durum Wheat Varieties Under Conventional and No-Chemical Input Management Systems in a Semiarid Mediterranean Environment

Agronomy ◽  
2019 ◽  
Vol 9 (12) ◽  
pp. 788 ◽  
Author(s):  
Umberto Anastasi ◽  
Sebastiano Andrea Corinzia ◽  
Salvatore Luciano Cosentino ◽  
Danilo Scordia
Keyword(s):  
Durum Wheat ◽  
Significant Interaction ◽  
Cropping Systems ◽  
Cropping System ◽  
Holistic Approach ◽  
Growing Season ◽  
Negative Influence ◽  
Management Systems ◽  
Wheat Varieties ◽  
Growing Seasons

Chemical input reduction in agricultural systems is strongly demanded with the aim to improve the quality and the safety of food/feed products in an environmental sustainable perspective. Durum wheat is the most important food crop widely grown across the Mediterranean basin. However, the choice of tailored-genotypes can represent a key strategy in resource limiting conditions. The present study investigated the performance of fourteen commercial durum wheat varieties, in terms of morphologic, productive and quality traits under two cropping systems, conventional (CH) and no-chemical input (NC), for two growing seasons. The NC cropping system affected plant phenology, grain yield, and its components (i.e., ears m−2 and test weight). However, the negative influence exerted by the NC depended by the growing season (significant interaction between growing season and cropping system), which in turn affected the production behavior of genotypes (significant interaction between growing season and genotype). The additive main effect and multiplicative interaction (AMMI) analysis showed that genotype (G) effect explained the 4.3% of the total variability, the environment (E) the 71.7% and the G × E interaction the 9.4%. The AMMI stability value (ASV) indicated that Meridiano, Claudio, Saragolla, and Normanno were the most stable genotypes among environments (combination of years and management systems). An integrated environmental assessment, including a soil nitrogen balance, can help to provide a more holistic approach to the sustainability of the no-chemical Mediterranean cropping systems based on cereal-legume rotation.

Sign in / Sign up

Export Citation Format

Share Document