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- Author:
- Bruce A. Linquist, et al. ; Telha H. Rehman; Mark E. Lundy; Show all 3 Authors
- Source:
- Remote Sensing 2022 v.14 no.12 pp. -
- ISSN:
- 2072-4292
- Subject:
- grain yield; nitrogen; nitrogen fertilizers; normalized difference vegetation index; panicles; rice; total nitrogen; unmanned aerial vehicles; vegetation; California
- Abstract:
- ... Reflectance-based vegetation indices can be valuable for assessing crop nitrogen (N) status and predicting grain yield. While proximal sensors have been widely studied in agriculture, there is increasing interest in utilizing aerial sensors. Given that few studies have compared aerial and proximal sensors, the objective of this study was to quantitatively compare the sensitivity of aerially sensed ...
- DOI:
- 10.3390/rs14122770
- https://doi.org/10.3390/rs14122770
- Author:
- Bruce A. Linquist, et al. ; Gabriel T. LaHue; Show all 2 Author
- Source:
- Agricultural water management 2021 v.243 pp. 106445
- ISSN:
- 0378-3774
- Subject:
- Oryza sativa; clay; direct seeding; groundwater; irrigation; paddies; rice; seepage; soil water balance; surface water; water footprint; water management; water requirement; California
- Abstract:
- ... Rice (Oryza sativa) has one of highest applied water footprints of any crop, due in many cases to high percolation and lateral seepage rates in flooded rice fields. Better understanding the magnitude and variability of these subsurface water flows and their contribution to the rice field water balance is critical for efforts to reduce the water footprint of rice production and to limit the transpo ...
- DOI:
- 10.1016/j.agwat.2020.106445
- https://doi.org/10.1016/j.agwat.2020.106445
- Author:
- Bruce A. Linquist, et al. ; Johnny C. Campbell; Randal J. Southard; Show all 3 Authors
- Source:
- Nutrient cycling in agroecosystems 2022 v.122 no.3 pp. 255-271
- ISSN:
- 1385-1314
- Subject:
- agroecosystems; clay fraction; decision making; irrigation water; nitrogen; potassium; rice; soil parent materials; straw; California
- Abstract:
- ... Plant demand for K in rice is comparable to nitrogen. With yields and management practices changing, refining K fertility management and decision-making tools is necessary. Our objectives were to determine (1) how soil K balances affect soil K indices, (2) the best soil test indicator of plant K availability, and (3) the relationships between plant and soil K indices. We assessed soil (plow layer) ...
- DOI:
- 10.1007/s10705-022-10200-w
- https://doi.org/10.1007/s10705-022-10200-w
- Author:
- Bruce A. Linquist, et al. ; Anna C. Murray; Show all 2 Author
- Source:
- Agronomy journal 2020 v.112 no.1 pp. 441-449
- ISSN:
- 0002-1962
- Subject:
- Oryza sativa; agronomy; economic analysis; nitrogen; nitrogen content; nitrogen fertilizers; organic fertilizers; rice; California
- Abstract:
- ... Organic rice (Oryza sativa L.) systems in California utilize a 30‐d drain approximately one month into the growing season to control weeds. This drain may result in N losses and reduce yields. Two field trials were initiated to evaluate whether top‐dressing fertilizer N following the drain period could mitigate this problem by increasing N uptake and yields. Treatments evaluated rates and sources ...
- DOI:
- 10.1002/agj2.20063
- https://doi.org/10.1002/agj2.20063
- Author:
- Bruce A. Linquist, et al. ; Daniela R. Carrijo; Gabriel T. LaHue; Sanjai J. Parikh; Rufus L. Chaney; Show all 5 Authors
- Source:
- Science of the total environment 2022 v.839 pp. 156245
- ISSN:
- 0048-9697
- Subject:
- arsenic; cadmium; environment; irrigation; rice; soil water potential; water management
- Abstract:
- ... Arsenic exposure through rice consumption is a growing concern. Compared to Continuous Flooding (CF), irrigation practices that dry the soil at least once during the growing season [referred to here as Alternate Wetting and Drying (AWD)] can decrease As accumulation in grain; however, this can simultaneously increase grain Cd to potentially unsafe levels. We modelled grain As and Cd from field stu ...
- DOI:
- 10.1016/j.scitotenv.2022.156245
- https://doi.org/10.1016/j.scitotenv.2022.156245
- Author:
- Bruce A. Linquist, et al. ; Thort Chuong; Richard Plant; Show all 3 Authors
- Source:
- Soil Science Society of America journal 2020 v.84 no.3 pp. 784-797
- ISSN:
- 0361-5995
- Subject:
- Oryza sativa; ammonia; application rate; farmers; nitrogen fertilizers; nutrient use efficiency; rice; urea; volatilization
- Abstract:
- ... Ammonia volatilization, a primary N loss pathway from rice (Oryza sativa L.) production systems, leads to a reduction in N use efficiency and environmental problems. Ammonia volatilization has not been studied in water‐seeded rice systems or where aqueous NH₃ is the primary fertilizer N source. Our objective was to quantify NH₃ volatilization from preplant aqueous NH₃ and compare it with drilled o ...
- DOI:
- 10.1002/saj2.20074
- https://doi.org/10.1002/saj2.20074
7. Quantifying N leaching losses as a function of N balance: A path to sustainable food supply chains
- Author:
- Bruce A. Linquist, et al. ; Santiago Tamagno; Alison J. Eagle; Eileen L. McLellan; Chris van Kessel; Jagdish Kumar Ladha; Cameron M. Pittelkow; Show all 7 Authors
- Source:
- Agriculture, ecosystems & environment 2022 v.324 pp. 107714
- ISSN:
- 0167-8809
- Subject:
- United Nations Framework Convention on Climate Change; Zea mays; agriculture; case studies; corn; environment; fertilizer rates; food availability; food supply chain; freshwater ecosystems; grain yield; groundwater contamination; issues and policy; nitrates; nitrogen; nutrient use efficiency; water quality; Corn Belt region
- Abstract:
- ... Growing public concern over agricultural nitrogen (N) pollution is now reflected in consumers’ food choices and shareholders’ resolutions, causing rapid changes in global food supply chains. Nitrate (NO₃) leaching represents the primary N source for groundwater contamination and freshwater ecosystem degradation. However, simplified science-based indicators are still lacking to facilitate improved ...
- DOI:
- 10.1016/j.agee.2021.107714
- https://doi.org/10.1016/j.agee.2021.107714
- Author:
- Bruce A. Linquist, et al. ; Hongfei Wang; Aniruddha Ghosh; Robert J. Hijmans; Show all 4 Authors
- Source:
- Remote Sensing 2020 v.12 no.9 pp. -
- ISSN:
- 2072-4292
- Subject:
- agroecosystems; algorithms; climate change; data collection; growing season; harvest date; heading; models; moderate resolution imaging spectroradiometer; phenology; planting; prediction; remote sensing; rough rice; satellites; spatial data; spatial variation; surveys; temperature; temporal variation; time series analysis; weather; California
- Abstract:
- ... Obtaining detailed data on the spatio-temporal variation in crop phenology is critical to increasing our understanding of agro-ecosystem function, such as their response to weather variation and climate change. It is challenging to collect such data over large areas through field observations. The use of satellite remote sensing data has made phenology data collection easier, although the quality ...
- DOI:
- 10.3390/rs12091522
- https://doi.org/10.3390/rs12091522
- Author:
- Bruce A. Linquist, et al. ; Daniela R. Carrijo; Chongyang Li; Sanjai J. Parikh; Show all 4 Authors
- Source:
- Science of the total environment 2019 v.649 pp. 300-307
- ISSN:
- 0048-9697
- Subject:
- arsenic; chronic diseases; crops; drying; food contamination; growing season; human health; irrigation management; neoplasms; panicles; perched water table; public health; rice; soil quality; soil water potential; toxicity
- Abstract:
- ... The accumulation of arsenic (As) in rice grain is a public health concern since As is toxic to humans; in particular, inorganic As can cause many chronic diseases including cancer. Rice crops are prone to accumulating As, in part, due to the anaerobic soil conditions triggered by the traditional continuously flooded irrigation practice. The objective of this study was to determine how the severity ...
- DOI:
- 10.1016/j.scitotenv.2018.08.216
- https://doi.org/10.1016/j.scitotenv.2018.08.216
- Author:
- Bruce A. Linquist, et al. ; Gabriel T. LaHue; Show all 2 Author
- Source:
- Journal of hydrology 2019 v.574 pp. 202-210
- ISSN:
- 0022-1694
- Subject:
- agrochemicals; drainage channels; growing season; infiltrometers; irrigation; nutrients; paddies; pesticides; preferential flow; seepage; soil properties; California
- Abstract:
- ... Lateral seepage can be an important water loss pathway at the field level and a conduit for the discharge of pesticides and nutrients from rice fields. However, few studies have directly measured lateral seepage rates in flooded rice fields. This study sought to characterize the magnitude and variability of lateral seepage in California rice fields, and to explore the relationship between lateral ...
- DOI:
- 10.1016/j.jhydrol.2019.04.030
- https://doi.org/10.1016/j.jhydrol.2019.04.030
11. Use of Normalized Difference Vegetation Index to Assess N Status and Predict Grain Yield in Rice
- Author:
- Bruce A. Linquist, et al. ; Telha H. Rehman; Andre Froes Borja Reis; Nadeem Akbar; Show all 4 Authors
- Source:
- Agronomy journal 2019 v.111 no.6 pp. 2889-2898
- ISSN:
- 0002-1962
- Subject:
- Oryza sativa; Zea mays; aboveground biomass; agronomy; corn; developmental stages; grain yield; nitrogen; nitrogen fertilizers; normalized difference vegetation index; panicles; rice; total nitrogen; wheat; California
- Abstract:
- ... Fine tuning N recommendations requires an understanding of crop N status and yield potential early enough in the growing season when changes to N management can influence yields. Recent studies have demonstrated the ability of Normalized Difference Vegetation Index (NDVI) to assess crop N status and predict yield in wheat (Tricticum aestivum L.) and maize (Zea mays L.); however, there has been rel ...
- DOI:
- 10.2134/agronj2019.03.0217
- https://doi.org/10.2134/agronj2019.03.0217
- Author:
- Bruce A. Linquist, et al. ; Chongyang Li; Daniela R. Carrijo; Yuhei Nakayama; Peter G. Green; Sanjai J. Parikh; Show all 6 Authors
- Source:
- Agriculture, ecosystems & environment 2019 v.272 pp. 188-198
- ISSN:
- 0167-8809
- Subject:
- arsenic; bioaccumulation; bioavailability; cadmium; chemical speciation; drying; growing season; irrigation; perched water table; plant tissues; rhizosphere; rice; soil quality; straw; volumetric water content
- Abstract:
- ... Alternate wetting and drying (AWD) irrigation can be used to promote oxic soil conditions and decrease arsenic (As) mobility and uptake into rice plants. However, scant information is available quantifying plant As speciation and uptake at the field scale for AWD with different soil drying severities. It is hypothesized that as the severity of soil drying increases, plant uptake and subsequent acc ...
- DOI:
- 10.1016/j.agee.2018.11.009
- https://doi.org/10.1016/j.agee.2018.11.009
- Author:
- Bruce A. Linquist, et al. ; Hussain Sharifi; Robert J. Hijmans; James E. Hill; Show all 4 Authors
- Source:
- Paddy and water environment 2018 v.16 no.3 pp. 467-476
- ISSN:
- 1611-2490
- Subject:
- Oryza sativa; air temperature; cold; heading; irrigation; models; paddies; panicles; phenology; planting; prediction; rice; water; water temperature; California
- Abstract:
- ... Air temperature (Tₐ) is commonly used for modeling rice phenology. However, since the growing point of rice is under water during the vegetative and the early part of the reproductive period, water temperature (Tw) is likely to have a greater influence on crop developmental rates than Tₐ during this period. To test this hypothesis, we monitored Tw, Tₐ, and crop phenology in three commercial irriga ...
- DOI:
- 10.1007/s10333-018-0640-4
- https://doi.org/10.1007/s10333-018-0640-4
- Author:
- Bruce A. Linquist, et al. ; Daniela R. Carrijo; Mark E. Lundy; Show all 3 Authors
- Source:
- Field crops research 2017 v.203 pp. 173-180
- ISSN:
- 0378-4290
- Subject:
- carbon; crops; drying; grain yield; growing season; irrigation; meta-analysis; rice; soil water; soil water potential
- Abstract:
- ... Rice systems provide a major source of calories for more than half of the world’s population; however, they also use more water than other major crops. Alternate wetting and drying (AWD) is an irrigation practice (introduction of unsaturated soil conditions during the growing season) that can reduce water inputs in rice, yet it has not been widely adopted, in part, due to the potential for reduced ...
- DOI:
- 10.1016/j.fcr.2016.12.002
- https://doi.org/10.1016/j.fcr.2016.12.002
- Author:
- Bruce A. Linquist, et al. ; K. Christy Tanner; Lisamarie Windham-Myers; Mark Marvin-DiPasquale; Jacob A. Fleck; Show all 5 Authors
- Source:
- Soil Science Society of America journal 2018 v.82 no.1 pp. 115-125
- ISSN:
- 0361-5995
- Subject:
- Oryza sativa; aerobic conditions; bioaccumulation; ecosystems; fallow; field experimentation; grain yield; growing season; iron; irrigation; mercury; methylmercury compounds; microorganisms; oxidation; paddies; rice; soil; soil chemistry; soil sampling; surface water; toxicity; water content; water management; wildlife
- Abstract:
- ... Core Ideas We studied how alternate wetting and drying (AWD) water management effects methylmercury (MeHg) dynamics in rice fields. Alternate wetting and drying reduced MeHg concentrations in soil, water, and rice grain. Iron speciation indicated that AWD oxidized the soil and regenerated electron acceptors. Rice yield did not differ between AWD and the control over 4 yr. In flooded soils, includi ...
- DOI:
- 10.2136/sssaj2017.05.0158
- https://doi.org/10.2136/sssaj2017.05.0158
- Author:
- Bruce A. Linquist, et al. ; Mathias Marcos; Hussain Sharifi; Stephen R. Grattan; Show all 4 Authors
- Source:
- Agricultural water management 2018 v.195 pp. 37-46
- ISSN:
- 0378-3774
- Subject:
- basins; cropping systems; grain yield; growers; growing season; irrigation; irrigation water; management systems; models; paddies; planting; rice; salts; soil salinity; water management; water salinity
- Abstract:
- ... The scarcity of high quality irrigation water is a global issue facing rice growers, forcing many to adopt water management systems that may result in increased salinity and yield reductions. While salt concentrations in field water have been shown to vary depending on water management, the distribution and build-up patterns of dissolved salts are unclear. This study was conducted to elucidate the ...
- DOI:
- 10.1016/j.agwat.2017.09.016
- https://doi.org/10.1016/j.agwat.2017.09.016
- Author:
- Bruce A. Linquist, et al. ; Hussain Sharifi; Robert J. Hijmans; James E. Hill; Show all 4 Authors
- Source:
- Crop science 2017 v.57 no.1 pp. 444-453
- ISSN:
- 0011-183X
- Subject:
- Oryza sativa; climate change; cultivars; ecosystems; model validation; panicles; phenology; plant development; prediction; rice; temperature; California
- Abstract:
- ... Crop phenology models that use constant temperature parameters across developmental stages may be less accurate and have temperature‐dependent systematic prediction error (bias). Using the DD10 model, we evaluated default and optimized (DD_Opt) temperature parameters using data from seven California rice (Oryza sativa L.) cultivars grown in six locations over 3 yr (2012–2014). Furthermore, we eval ...
- DOI:
- 10.2135/cropsci2016.01.0072
- https://doi.org/10.2135/cropsci2016.01.0072
- Author:
- Bruce A. Linquist, et al. ; Daniel Geisseler; Patricia A. Lazicki; Show all 3 Authors
- Source:
- Soil biology & biochemistry 2017 v.115 pp. 452-460
- ISSN:
- 0038-0717
- Subject:
- rice; soil organic carbon; soil properties; mineral fertilizers; fertilizer application; soil microorganisms; ecosystems; Actinobacteria; oxygen; climate; community structure; microbial communities; soil quality; highlands; crops; crop rotation; rice soils; meta-analysis; nitrogen; microbial biomass; environmental factors; bacteria; fungi
- Abstract:
- ... Soil microorganisms are considered a sensitive indicator of soil health and quality. In cropping systems, soil microorganisms are strongly affected by crop management, including the application of fertilizers. While studies in natural ecosystems have generally found that increased nitrogen (N) inputs decrease microbial biomass, microorganisms in soils under upland crops often benefit from mineral ...
- DOI:
- 10.1016/j.soilbio.2017.09.018
- https://doi.org/10.1016/j.soilbio.2017.09.018
- Author:
- Bruce A. Linquist, et al. ; K. Christy Tanner; Lisamarie Windham‐Myers; Mark Marvin‐DiPasquale; Jacob A. Fleck; Kenneth W. Tate; Show all 6 Authors
- Source:
- Journal of environmental quality 2018 v.47 no.4 pp. 830-838
- ISSN:
- 0047-2425
- Subject:
- Oryza sativa; drainage water; fallow; growing season; irrigation water; mercury; methylmercury compounds; paddies; rice; rice straw; soil; surface water; toxicity; water quality; California
- Abstract:
- ... Few studies have considered how methylmercury (MeHg, a toxic form of Hg produced in anaerobic soils) production in rice (Oryza sativa L.) fields can affect water quality, and little is known about MeHg dynamics in rice fields. Surface water MeHg and total Hg (THg) imports, exports, and storage were studied in two commercial rice fields in the Sacramento Valley, California, where soil THg was low ( ...
- DOI:
- 10.2134/jeq2017.10.0390
- https://doi.org/10.2134/jeq2017.10.0390
20. Weed Community Dynamics and System Productivity in Alternative Irrigation Systems in California Rice
- Author:
- Bruce A. Linquist, et al. ; Whitney B. Brim-DeForest; Kassim Al-Khatib; Albert J. Fischer; Show all 4 Authors
- Source:
- Weed science 2017 v.65 no.1 pp. 177-188
- ISSN:
- 0043-1745
- Subject:
- Ammannia; Cyperus difformis; Heteranthera; Leptochloa fusca subsp. fascicularis; Oryza sativa; Schoenoplectus; biomass; canopy; crop-weed competition; drought; drying; grasses; growers; harvesting; herbicides; irrigation systems; plant density; planting; rice; soil; water content; weeds; California
- Abstract:
- ... Over the last 10 yr, California has experienced a series of ever-worsening droughts. Rice, traditionally a flooded crop, has come under increasing scrutiny with respect to its water use, leading to proposals to evaluate alternative irrigation systems. For growers, weed competition is one of the most limiting factors to maintaining high yields, so understanding the shifts among species in weed comm ...
- DOI:
- 10.1614/WS-D-16-00064.1
- https://doi.org/10.1614/WS-D-16-00064.1
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