Ultra-high carbon dioxide and light quality and quantity in...
Underground irrigation or saturation of soil
Unit dosage system for tree trunk implantation to control...
Unitary flower pot
Unitary tooth harvesting head disk saw
Unitized mat to facilitate growing plants
Units and system for hydroponics
Universal manual grafting device
Universal plant pot base
Unknown
Use of aquatic grasses as support for soil-less cultivation...
Use of needleless pneumatically actuated injection apparatus...
Use of night-break lighting to increase fruit set in...
Utilization of exhaust gases for plant growth