A5036250291- Irrigation Practices and Water Management
- Algal biology and biofuel production
- Plant Water Relations and Carbon Dynamics
- Soil and Unsaturated Flow
- Greenhouse Technology and Climate Control
- Remote Sensing in Agriculture
- Aquatic Ecosystems and Phytoplankton Dynamics
- Plant biochemistry and biosynthesis
- Plant Surface Properties and Treatments
- Soil Moisture and Remote Sensing
- Marine and coastal ecosystems
- Leaf Properties and Growth Measurement
- Wastewater Treatment and Reuse
- Hydraulic flow and structures
- Smart Agriculture and AI
- Water Quality Monitoring and Analysis
- Groundwater flow and contamination studies
- Turfgrass Adaptation and Management
- Water-Energy-Food Nexus Studies
- Biodiesel Production and Applications
- Land Use and Ecosystem Services
- Microbial Community Ecology and Physiology
- Digital Platforms and Economics
- Entomopathogenic Microorganisms in Pest Control
- Pesticide and Herbicide Environmental Studies
University of Arizona
2013-2024
Pacific Northwest National Laboratory
2020
New Mexico State University
2016
European Space Research and Technology Centre
2004
Paderborn University
2002
Brazilian Agricultural Research Corporation
1997
Agricultural Research Corporation
1997
Twin Cities Spine Center
1997
University of California, Davis
1991-1995
University of California System
1989
A microalgae growth model was developed for predicting biomass productivity in outdoor ponds under nutrient-replete conditions and diurnally fluctuating light intensities water temperatures. The validated three different species (Chlorella sorokiniana, Nannochloropsis salina, Picochlorum sp.), successfully all cases raceway pond cultures. can be run batch continuous culture mode at depths and, addition to incident sunlight temperature data, requires the following experimentally determined...
The cultivation efforts within the National Alliance for Advanced Biofuels and Bioproducts (NAABB) were developed to provide four major goals consortium, which included biomass production downstream experimentation, development of new assessment tools cultivation, reactor technologies, methods robust cultivation. NAABB consortium testbeds produced over 1500 kg processing. a number model strains, but also took into some more promising strains found through prospecting consortium. Cultivation...
Various remote sensing indices have been used to infer crop nitrogen (N) status for field-scale nutrient management. However, such may indicate erroneous N if there is a decrease in canopy density influenced by other factors, as water stress. The Canopy Chlorophyll Content Index (CCCI) two-dimensional index that has proposed inferring cotton status. CCCI uses reflectances the near-infrared (NIR) and red spectral regions account seasonal changes density, while NIR far-red are detect relative...
The present study examines how climatic conditions and pond design affect the growth performance of microalgae. From January to April 2011, outdoor batch cultures Nannochloropsis salina were grown in three replicate 780 L conventional raceways, as well an experimental 7500 algae raceway integrated (ARID) pond. ARID culture system utilizes a series 8–20 cm deep basins 1.5 m canal enhance light exposure mitigate temperature variations extremes. reached stationary phase 27 days earlier than...
The present study investigated the relationship between crop water stress index (CWSI) and soil moisture for surface irrigated cotton (Gossypium hirsutum, Delta Pine 90b) at Maricopa, Arizona during 1998 season. CWSI was linked to through coefficient Ks that accounts reduced evapotranspiration when there is a shortage of water. A recovery Krec introduced account as recovered from after irrigation events. (SWSI) derived in terms Krec. SWSI compared reasonably well CWSI, but atmospheric...
ABSTRACT The following four management schemes were evaluated for lessening the chemical clogging effects of high calcium content water in drip-tape: 1) above ground day-time application, 2) night-time 3) subsurface placement drip-tape, and 4) lowering pH irrigation water. Calcium, magnesium bicarbonate ions injected into source to evaluate qualities with electrical conductivities 0.59, 1.12, 2.02 dS/m. Irrigation duration each scheme was hours daily over 100-day investigation. Volumetric...
Sorghum (Sorghum bicolor L.) has emerged as a pivotal global food crop. Consequently, it is imperative to explore sustainable and eco-friendly strategies achieve sorghum production with high yield. This study aimed reveal the effects of irrigation management nitrogen rates their interactions on growth traits, yield soil nitrate-N ammonium-N accumulation improve practices under drip irrigation. A 2-year (2021 2022) field experiment was conducted drip-irrigated fertilized in Heilongjiang...
A remote sensing package called the agricultural irrigation imaging system (AgIIS) aboard a linear move was developed to simultaneously monitor water status, nitrogen and canopy density at one-meter spatial resolution. The present study investigated relationship between status detected by AgIIS soil moisture for 1999 cotton (Gossypium hirsutum, Delta Pine 90b) season in Maricopa, Ariz. Water quantified deficit index (WDI), an expansion of crop stress where influence temperature is accounted...
A groundbased remote sensing system (Agricultural Irrigation Imaging System, or AgIIS) was attached to alinearmove irrigation system. The used develop images of a 1ha field at 1 m resolution address issuesof spatial scale and test the ability separate water nitrogen stress usingthe coefficient variation (CV) for indices. 2 Latin square experimentwith four replicates conducted on cotton this purpose. Treatments included optimal low with optimaland water. ANOVA not an adequate method assess...
Summary Microalgae as a biofuel source are of great interest. Bacterial phycosphere inhabitants algal cultures hypothesized to contribute productivity. In this study, the bacterial composition Chlorella sorokiniana was determined over several production cycles in different growing seasons by 16S rRNA gene sequencing and identification. The diversity increased with time during each individual reactor run, based on Faith’s phylogenetic metric versus days post‐inoculation ( R = 0.66, P <...
A subsurface drip irrigation (SDI) system is potentially efficient because it provides water directly to the rootzone, minimizing evaporative loss, especially in arid lands. In this study, was compared tostandard overhead sprinkler of Bermuda grass turf using reclaimed water. Research focused on response ofBermuda two treatments, and irrigation. Soil moisturecontent calculated via time domain reflectometry (TDR) neutron probe data. The remotely sensed crop waterstress index (CWSI) could not...
The momentum transport phenomena at the interface of porous medium and fluid have been numerically investigated. single domain approach is used with matching boundary conditions; that is, Brinkman-Forchheimer-extended Darcy equation for present study. Five typical media found in natural engineered systems are selected order to cover a wide range number (6.25 × 10−4≤Da≤ 5.90 10−11). In addition, six different Reynolds numbers (10 ≤R≤ 1,000) tested each case. When Da> 10−7, results showed...
Ground-based remote sensing can provide data at spatial resolutions, repeat frequencies, and turnaround times that are suitable for daily farm management the field scale, whereas present satellite airborne platforms do not meet these criteria. Remotely sensed data, when combined with other ancillary spatially distributed maps of vegetation vigor, evapotranspiration, crop water stress, nitrogen status. The objective this paper was to describe design, operation, processing a ground-based...