| Patents for A01G 31 - Hydroponics; Cultivation without soil (10,431) |
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| 05/22/1990 | US4926585 Plant nutrient delivery system having a porous tubular member |
| 05/22/1990 | US4926584 Apparatus for hydroponic farming |
| 05/16/1990 | EP0247042B1 Packaged plant material and method of production |
| 05/09/1990 | EP0366994A1 Method for the manufacture of a fertilizer for hydroponics |
| 05/02/1990 | EP0214218B1 Aqueous rooting gel |
| 04/25/1990 | EP0365096A2 Method of growing plants |
| 04/24/1990 | US4918861 Plant growth bed with high loft textile fibers |
| 04/18/1990 | CN1041259A Fluid manifold |
| 04/17/1990 | US4916856 Process for the automated growing of a group of plants and corresponding installation |
| 04/11/1990 | EP0363168A2 Computerized fertilizer injector system |
| 04/04/1990 | EP0361955A2 Hydroponic crop production |
| 04/04/1990 | EP0361701A1 Fluid manifold |
| 03/27/1990 | US4910912 Aquaculture in nonconvective solar ponds |
| 03/22/1990 | WO1990002710A1 Wastewater treatment system |
| 03/20/1990 | US4908985 System and apparatus for hydroponic gardening |
| 03/14/1990 | EP0358629A1 A method for feeding plants by hydroponic cultivation |
| 03/13/1990 | US4908315 Integument and method for micropropagation and tissue culturing |
| 02/28/1990 | EP0355250A1 Rooting and culture mould for plants, and method of producing same |
| 02/22/1990 | WO1990001259A1 Substrate for plants and its use |
| 02/20/1990 | CA1265928A1 Indoor multiple-purpose hydroponic cultivation planter |
| 02/14/1990 | EP0354748A1 Rock wool growing medium |
| 02/13/1990 | US4899489 Device for growing plants |
| 02/07/1990 | CN1006676B Method for plant cultivation and apparatus for carrying out the method |
| 01/25/1990 | WO1990000348A1 Nutrient depleting envelopes containing aquatic plants |
| 01/24/1990 | EP0352031A1 Chamber for germination and cultivation of seeds and plants |
| 01/24/1990 | CN2051439U Warm-house vegetable soilless multilayer automatic liquid supplying cultivating apparatus |
| 01/17/1990 | EP0351241A1 Materials for use in plant propagation |
| 01/10/1990 | EP0350132A1 Agroblock, such as agroplug |
| 01/10/1990 | EP0349607A1 Preparation and use of plants of improved biological value |
| 01/10/1990 | CN1038567A Automatic cultivation engineering system for organic nutrient solutions derived from building |
| 12/28/1989 | WO1989012385A1 Integument and method for culturing and growing organic material |
| 12/26/1989 | US4888912 Nutrient depleting envelopes containing aquatic plants |
| 12/22/1989 | EP0308422A4 Systemic plant interface. |
| 12/19/1989 | US4887386 Fluid manifold |
| 12/14/1989 | WO1989011787A2 Control valves and method of plant growing using flow control |
| 12/13/1989 | CN1006036B Culture medium supports for plant tissue culture |
| 12/07/1989 | DE3818441A1 Substrate material for growing plants |
| 12/07/1989 | DE3818440A1 Method and device for the in vitro cultivation and in vitro propagation of plants |
| 12/05/1989 | US4884366 Micro-climate plant growing system |
| 11/30/1989 | WO1989011217A1 Method and apparatus for hydroponic gardening |
| 11/30/1989 | WO1989011216A1 A method and apparatus for sprouting seeds |
| 11/30/1989 | DE3817289A1 Means for feeding livestock |
| 11/29/1989 | EP0344078A1 Modular presentation enabling both the plant-breeding in vitro and a distribution and a use for the general public |
| 11/23/1989 | EP0342743A1 Plastic substrate |
| 11/15/1989 | CN2047480U Electron switch for watering and hydroponics |
| 11/14/1989 | US4879841 Conveyor |
| 11/14/1989 | US4879840 Method and an apparatus for mechanized setting out and harvesting of chicory |
| 11/08/1989 | CN1036878A Soil cultivation techniques for vegetable and mineral cotton grow seedlings |
| 11/08/1989 | CN1036876A Non-soil grow seedlings and soil cultivation techniques for vegetable and mineral cotton |
| 11/07/1989 | US4879172 Subtratum for soil-free cultivation |
| 11/02/1989 | EP0339848A1 Process for making polyurethane foams |
| 10/11/1989 | CN1036118A Device for cultivating herbs by nourishing fog and prescriptions of nourishing liq. |
| 10/10/1989 | US4872985 Distribution onto leaves, stems, roots of aquatic plants causes formation of biofilm; purification |
| 09/26/1989 | US4869019 Aeroponic apparatus |
| 09/26/1989 | CA1261162A1 Culture media for plants |
| 09/21/1989 | WO1989008383A1 A method and a system for growing plants |
| 09/20/1989 | EP0333289A1 A method of, and a container for, packing vegetables for sale, in particular chicory |
| 09/19/1989 | US4867779 Supplying a soluble mineral nutrients culture substrate for plant's root system; soiless |
| 09/13/1989 | EP0331692A1 Cultivation substrates based on mineral wool |
| 08/29/1989 | US4860490 Movable root contact-pressure plate assembly for hydroponic system |
| 08/24/1989 | WO1989007389A1 Solution culture apparatus |
| 08/23/1989 | EP0328560A1 Mineral substance, process for its manufacture and use thereof. |
| 08/10/1989 | WO1989006901A1 Process for cultivating plants fit for human use, in particular vegetables with low nitrate content |
| 07/27/1989 | WO1989006488A1 Process and installation for making a product for use as a cultivation support |
| 07/26/1989 | CN1034112A Assembled multi-use soilless-culturing device |
| 07/19/1989 | EP0324689A1 Process, product and equipment for manufacturing said product serving as a culture substrate |
| 07/19/1989 | EP0324607A1 Equipment for cultivation of mushrooms and like agricultural produce on movable beds |
| 07/06/1989 | DE3828697A1 Hydroculture plant receptacle |
| 07/05/1989 | CN1033547A Method for culturing bupleurum plants, anti-inflammatory agent containing said plant as effective component and plant culture apparatus |
| 06/28/1989 | CN1004604B Soilless culture of flowers by taking urea-formaldehyde foam as stroma |
| 06/01/1989 | WO1989004600A1 Plant-growth trough for earthless growing of plants |
| 06/01/1989 | WO1989004599A1 Preparation and use of plants of improved biological value |
| 05/30/1989 | US4833825 System for supporting growing plants |
| 05/17/1989 | CN1032894A Method and apparatus for germinating seed sprouts |
| 05/10/1989 | EP0314770A1 Improved equipment and processes for injecting nutritive aqueous solution in hydroponic cultivation. |
| 04/26/1989 | EP0313255A1 Plant growth promotion and medium therefor |
| 04/05/1989 | EP0310501A1 Substrate for soilless culture with water retention controlled through its thickness |
| 04/05/1989 | EP0310090A1 Process and device for completing the nutritious solution for hydroponic cultures |
| 04/05/1989 | CN2035173U Cultivation pot with soil |
| 03/29/1989 | EP0308545A1 A method and an apparatus for automatically watering plants |
| 03/29/1989 | EP0308422A1 Systemic plant interface |
| 03/21/1989 | US4813176 Aeroponic apparatus |
| 03/09/1989 | WO1989001736A1 Cultivation substrates based on mineral wool |
| 02/14/1989 | US4803803 Growing medium for plants |
| 02/01/1989 | EP0301619A1 Culture system and a holder intended for use in said system |
| 01/31/1989 | US4800674 Greenhouse structure |
| 01/26/1989 | WO1989000377A1 Improvements in or relating to plant growing methods |
| 01/25/1989 | EP0300578A2 Process for the production of a seed trough and a means thereto |
| 01/25/1989 | EP0300536A1 Method and device for mineral wool culture of plants with suction pressure control |
| 01/25/1989 | EP0300429A1 Culturing and conditioning process for plants, especially aquatic plants |
| 01/18/1989 | EP0299067A1 Support of culture medium for culturing plant |
| 01/12/1989 | WO1989000001A1 Device for artificial germination |
| 01/05/1989 | DE3744732A1 Plant substrate |
| 01/03/1989 | US4794728 Apparatus for hydroponics |
| 12/27/1988 | US4793096 Plant growing and handling system |
| 12/27/1988 | US4793095 Hectorite in water; propagation of softwood cuttings |
| 12/21/1988 | CN87105995A Fine textured soil reclamation method |
| 12/20/1988 | US4791755 Substrate for a cultivated plant |
| 12/13/1988 | US4790105 For seedling plants |
| 12/06/1988 | US4789584 Expanded, semi-rigid, hetero-cellular plastic; variable densities |