Open Access. Powered by Scholars. Published by Universities.®
- Discipline
Articles 1 - 2 of 2
Full-Text Articles in Plant Sciences
Nutrient Management For Recirculating Hydroponics, Noah J. Langenfeld, Lauren E. Payne, Bruce Bugbee
Nutrient Management For Recirculating Hydroponics, Noah J. Langenfeld, Lauren E. Payne, Bruce Bugbee
Hydroponics/Soilless Media
Steady-state nutrient management is essential in hydroponic culture. Determination of an appropriate refill solution is attained using the principle of mass balance. Optimizing the ratio of nutrient elements and refill solution concentrations requires an understanding of the ratio of nutrients in tissue to water, which is measured as water use efficiency (WUE). This ratio is then multiplied by the desired concentration of nutrients in leaf tissue to determine the refill solution composition. Deep-flow hydroponics enables constant monitoring of solution parameters and root health. We have achieved a steady-state nitrogen concentration in solution by using an automated pH control system that …
Carrot Cultivar Evaluation: Soilless Media Vs. Hydroponics, Derek R. Pinnock, Bruce Bugbee
Carrot Cultivar Evaluation: Soilless Media Vs. Hydroponics, Derek R. Pinnock, Bruce Bugbee
Hydroponics/Soilless Media
Nine cultivars of carrots were grown in a growth chamber. Each cultivar was grown both in hydroponic and soil-less media root-zone for sixty days. Three 30L tubs were used for each root-zone treatment. Three cultivars were planted in each tub, initially at 180 plants m-2 then thinned to 90 plants m-2 on day 45.