Daniel E. Wells
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View article: Controlling Salmonella enterica in Water-recirculating Systems for Lettuce Production Using a Bacteriophage Cocktail
Controlling Salmonella enterica in Water-recirculating Systems for Lettuce Production Using a Bacteriophage Cocktail Open
Controlled environment agriculture, including hydroponics, vertical farms, and aquaponics, has gained significant attention in recent years for its soil-free cultivation methods using nutrient solutions and substrates. However, food safety…
View article: Evaluation of Probiotic Effects on the Growth Performance and Microbiome of Nile Tilapia (<i>Oreochromis niloticus</i>) in a High‐Density Biofloc System
Evaluation of Probiotic Effects on the Growth Performance and Microbiome of Nile Tilapia (<i>Oreochromis niloticus</i>) in a High‐Density Biofloc System Open
Biofloc technology is an aquaculture production system that has gained popularity with tilapia production. Probiotics provide benefits for the host and/or aquatic environments by both regulating and modulating microbial communities and the…
View article: Effect of Exogenous Dietary Protease and a Humic Substance on Growth and Microbial Composition of Nile Tilapia (<i>Oreochromis niloticus</i>) and Romaine Lettuce (<i>Lactuca sativa</i>) in a Biofloc‐Integrated Decoupled Aquaponics System
Effect of Exogenous Dietary Protease and a Humic Substance on Growth and Microbial Composition of Nile Tilapia (<i>Oreochromis niloticus</i>) and Romaine Lettuce (<i>Lactuca sativa</i>) in a Biofloc‐Integrated Decoupled Aquaponics System Open
Aquaponics and biofloc‐based aquaculture systems are environmentally sustainable food production systems. When biofloc technology is combined with hydroponic systems, it expands economic diversity by producing additional value‐added produc…
View article: Supplemental figures for "Mass-Balance Process Model of a Decoupled Aquaponics System"
Supplemental figures for "Mass-Balance Process Model of a Decoupled Aquaponics System" Open
Figure S1 shows water and feed inputs to the aquaponics system over the course of one year. Figure S2 shows modeled rates of nitrogen gas evolution over time due to denitrification in the aquaponics system.
View article: Mass-Balance Process Model of a Decoupled Aquaponics System
Mass-Balance Process Model of a Decoupled Aquaponics System Open
Highlights A mass balanced process model for a large, decoupled aquaponics system was developed in SuperPro Designer. The flows of N, P, and C were determined over the course of a full year of system operation. On average, tilapia assimila…
View article: Effects of Nursery Container Color and Spacing on Root Zone Temperatures of ‘Soft Touch’ Holly
Effects of Nursery Container Color and Spacing on Root Zone Temperatures of ‘Soft Touch’ Holly Open
Newly up-potted ‘Soft Touch’ Japanese hollies (Ilex crenata ‘Soft Touch’) were grown in Mobile, AL in 1.5 L containers to evaluate the effects of growth from black or white container colors and container spacing (jammed or spaced) in relat…
View article: Microbial Interactions, Growth, and Health of Aquatic Species in Biofloc Systems
Microbial Interactions, Growth, and Health of Aquatic Species in Biofloc Systems Open
Biofloc technology involves the manipulation of the culture system’s carbon: nitrogen ratio to promote bacterial community growth to convert toxic nitrogenous wastes and organics into functional microbial protein; this protein can then be …
View article: Effects of Hydraulic Retention Time of Aquaculture Effluent on Nutrient Film Technique Lettuce Productivity
Effects of Hydraulic Retention Time of Aquaculture Effluent on Nutrient Film Technique Lettuce Productivity Open
Nutrient film technique (NFT) is a popular, ergonomic, hydroponic system, but is not often used in commercial aquaponic systems due to lower efficiency in overall nutrient removal. Experiments were conducted to assess if NFT lettuce produc…
View article: Performance of Greenhouse-Grown Beit Alpha Cucumber in Pine Bark and Perlite Substrates Fertigated with Biofloc Aquaculture Effluent
Performance of Greenhouse-Grown Beit Alpha Cucumber in Pine Bark and Perlite Substrates Fertigated with Biofloc Aquaculture Effluent Open
Using aquaculture effluent (AE) to fertigate plants is gaining popularity worldwide. However, in substrate-based systems, the choice of substrate is essential due to their effects on crop productivity. Differences in the retention of nutri…
View article: Performance of Aquaculture Effluent for Tomato Production in Outdoor Raised Beds
Performance of Aquaculture Effluent for Tomato Production in Outdoor Raised Beds Open
Raised bed production trials were conducted to evaluate the effectiveness of effluent from a biofloc-style recirculating aquaculture system producing nile tilapia ( Oreochromis niloticus ) as nutrient-rich irrigation water for fall ‘Celebr…
View article: Effect of pH on Cucumber Growth and Nutrient Availability in a Decoupled Aquaponic System with Minimal Solids Removal
Effect of pH on Cucumber Growth and Nutrient Availability in a Decoupled Aquaponic System with Minimal Solids Removal Open
Decoupled aquaponic systems are gaining popularity as a way to manage water quality in aquaponic systems to suit plant and fish growth independently. Aquaponic systems are known to be deficient in several plant-essential elements, which ca…
View article: Comparisons between Aquaponic and Conventional Hydroponic Crop Yields: A Meta-Analysis
Comparisons between Aquaponic and Conventional Hydroponic Crop Yields: A Meta-Analysis Open
Aquaponic is a relatively new system of farming, which has received much research attention due to its potential for sustainability. However, there is no consensus on comparability between crop yields obtained from aquaponics (AP) and conv…
View article: Selection of Heat Tolerant Lettuce (Lactuca sativa L.) Cultivars Grown in Deep Water Culture and Their Marketability
Selection of Heat Tolerant Lettuce (Lactuca sativa L.) Cultivars Grown in Deep Water Culture and Their Marketability Open
Lettuce is a cool season vegetable often produced in greenhouses and other protective structures to meet market demands. Greenhouses are being increasingly adopted in warm climate zones where excessive heat often leads to physiological dis…
View article: Long-term Response to Phosphorus Banding in Irrigated and Nonirrigated Pecan Production
Long-term Response to Phosphorus Banding in Irrigated and Nonirrigated Pecan Production Open
An experiment was conducted to determine the effects of banded phosphorus (P) applications at differing rates in irrigated and nonirrigated pecan ( Carya illinoinensis ) plots on P movement within the soil, P uptake and movement within pec…
View article: Preemergence Herbicides Applied Pre- and Postcrimp in a Rye Cover Crop System for Control of Escape Weeds in Watermelon
Preemergence Herbicides Applied Pre- and Postcrimp in a Rye Cover Crop System for Control of Escape Weeds in Watermelon Open
Field studies were conducted in 2016 and 2017 in Tallassee, AL, to evaluate the effect of preemergence (PRE) herbicide applications pre- and postcrimp in a cereal rye ( Secale cereale ) cover crop for control of escape weeds in watermelon …
View article: Poultry Litter Ash Rate and Placement Affect Phosphorus Dissolution in a Horticultural Substrate1
Poultry Litter Ash Rate and Placement Affect Phosphorus Dissolution in a Horticultural Substrate1 Open
Poultry litter ash (PLA) is a byproduct of bioenergy production and an effective P source for horticultural crops since it reduces P losses from container production due to its low P solubility. Experiments were conducted to determine effe…
View article: Poultry Litter Ash Reduces Phosphorus Losses during Greenhouse Production of Lantana camara L. ‘New Gold’
Poultry Litter Ash Reduces Phosphorus Losses during Greenhouse Production of Lantana camara L. ‘New Gold’ Open
Phosphorus (P) fertilizers with high water-solubility are often applied in excessive amounts to porous horticultural substrates to produce high-quality plants. As a result, high P losses during containerized plant production have presented…