Crop Physiology Laboratory HYDROPONICS Nutrient Management in Recirculating Hydroponic Culture - by Bruce Bugbee Emerging Research Techniques & New Instrumentation for Plant Biology - by Bruce Bugbee Long-Term Effects of NH4+/NO3- Ratios on Growth and Nitrification in Hydroponic Culture - by Bruce Bugbee The Long-Term Effects of High NH4+/NO3- Ratios on Wheat Growth and Nitrification in ...