| Patents for A01C 21 - Methods of fertilising (3,888) |
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| 08/26/1997 | US5659998 Water-absorbent polymer mixture for underground dispersion |
| 05/21/1997 | CN1150132A Technique for manufacturing liquid quick-acting farm manure and applying method |
| 04/23/1997 | CN2252487Y Multifunctional regularly-releasing fertilizing packet |
| 04/23/1997 | CN1034656C Application method for antiseptic and yield-increasing liquid |
| 03/13/1997 | DE19532870A1 Controlling and/or regulating agricultural processing and/or distribution machine |
| 03/12/1997 | EP0761084A1 Method for controlling and/or regulating agricultural processing and/or distributing machines |
| 02/27/1997 | DE19531083A1 Fertiliser brick for controlled release by weather over one year |
| 11/12/1996 | CA2151034C Method and apparatus for delivering additive foam |
| 10/30/1996 | EP0739329A1 Mouldings containing fertilisers |
| 10/02/1996 | CN1132018A Method for applying fertilizer and farm chemical as solid-state substance buried in the acupoints of plant's xylem |
| 07/18/1996 | DE19507928C1 Shaped compost bodies are fertilisers and soil improvers and protectors |
| 06/27/1996 | WO1996019419A1 Food mixture for plants, a method of introducing the said mixture into the soil and a device for same |
| 04/18/1996 | DE4436924A1 Long-term fertiliser rods |
| 01/17/1996 | CN2217298Y Wrapped pesticide-strip to be embedded in wooden point of wood-plant |
| 12/27/1995 | CN1113902A Huaxia magnetic composite special fertilizer |
| 12/26/1995 | US5477792 For applying an additive to soil |
| 10/31/1995 | US5461992 Deep root tree and shrub fertilizer stake drivers |
| 10/24/1995 | US5460106 Method, apparatus and device for delivering and distributing a foam containing a soil additive into soil |
| 09/26/1995 | US5452672 Multiple earth auger and fertilizer dispensing apparatus |
| 05/04/1995 | DE4336625A1 Method for the regeneration and/or renovation of lawn areas |
| 04/27/1995 | DE4336244A1 Ground-working appliance |
| 03/30/1995 | WO1995008253A1 Method and apparatus for delivering additive foam |
| 03/30/1995 | DE4409112A1 Method for protecting agriculturally or horticulturally utilisable areas against substance translocation |
| 03/29/1995 | CN2193013Y Fertilizer mixer |
| 03/23/1995 | WO1995007873A1 Mouldings containing fertilisers |
| 03/08/1995 | CN1099550A Method for using computer recommending fertilizer application formula |
| 02/22/1995 | EP0639546A1 Material comprising a fertilizer which is released slowly and fertilizer rods as well as plant-pots made therefrom |
| 02/22/1995 | EP0639545A1 Process for manufacturing articles, particularly granular long-term release fertilizers and fertilizer granules |
| 02/16/1995 | WO1995004870A1 Soil sampler for analysis for fertilizer determination |
| 02/16/1995 | WO1995004450A1 Method of fertilizer application |
| 01/31/1995 | US5385596 Treating of agricultural soil |
| 12/27/1994 | US5375541 Material insertion machine |
| 12/06/1994 | US5370069 Apparatus and method for aerating and/or introducing particulate matter into a ground surface |
| 12/06/1994 | US5370068 Coulter fertilizer applicator unit |
| 10/11/1994 | CA1332284C Agricultural processes and products |
| 09/21/1994 | EP0326594B1 Aqueous boron-containing compositions |
| 06/23/1994 | DE4332393A1 Stabilisation of water and plant nutrients in the soil |
| 06/07/1994 | US5317834 Agricultural processes and products |
| 05/25/1994 | CN1086953A Process for planting non-contaminated vegetables |
| 05/18/1994 | EP0597417A1 Organic or organomineral fertiliser comprising compost |
| 04/19/1994 | US5303663 Method of treating soil to promote plant growth |
| 04/19/1994 | US5303503 Irrigation and fertilization system |
| 04/06/1994 | CN2160941Y Scientific fertiliser applying calculator |
| 03/10/1994 | DE4229354A1 Fertilising plants esp. trees - involves preparing fertilizer mixture contg. food specific to plant and location e.g. according to soil analysis results |
| 12/09/1993 | DE4218580A1 Compsns. for inhibiting fertiliser nitrification in soil - contains 1-guanyl-3-methyl-pyrazole and e.g. 3-methyl pyrazole or dicyandiamide and synergist |
| 09/29/1993 | CN1076796A Calculator for scientifically applying fertilizer |
| 09/28/1993 | CA1322463C Aqueous boron-containing compositions |
| 09/01/1993 | CN1075590A Fertilizing and determination method for taking account of crops and soil |
| 07/21/1993 | CN1074330A Method of steam fertilising |
| 07/07/1993 | CN1073825A Device for releasing carbon dioxide |
| 04/14/1993 | CN1020248C Method of planting seedlings |
| 03/02/1993 | CA1314071C Soil chemical sensor and precision agricultural chemical delivery system and method |
| 12/22/1992 | US5172768 Device for loosening soil |
| 12/17/1992 | DE4119504A1 Solid mineral-organic fertiliser providing convenient disposal of excess manure - consists of gypsum mixed with animal and/or human faeces and/or urine which is then dried |
| 12/10/1992 | DE4118919A1 Nutrient contg. soils prepn. - by granulating inorganic and organic waste components with liq. that contains plant nutrients. |
| 10/20/1992 | US5156102 Apparatus for sowing granular material |
| 09/10/1992 | DE4107941A1 Foamed glass - used as chemical carrier medium esp. for delayed release of artificial fertiliser |
| 09/01/1992 | US5143020 Pond fertilizing apparatus |
| 07/07/1992 | US5127186 Encapsulated earthworm cocoons |
| 06/02/1992 | US5117579 Method and apparatus for applying fixed nitrogen to plants |
| 03/25/1992 | EP0476550A1 Soil additive pellets, to feed plants with nitrogen, and process for their production |
| 01/08/1992 | CN1057565A Antiseptic and yield-increasing liquid and its preparation |
| 12/17/1991 | US5073257 Apparatus for treating water |
| 11/12/1991 | US5063863 Tree fertilizing tool using an auger and measuring means |
| 11/05/1991 | US5062543 Food pellet dispensing appliance |
| 10/16/1991 | CN2086509U Colorimetric card for applying fertilizer according to leaves colour |
| 07/24/1991 | EP0438356A1 Device for a controlled release of fertilizers |
| 07/23/1991 | US5033397 Soil chemical sensor and precision agricultural chemical delivery system and method |
| 07/18/1991 | CA2034064A1 Device for a controlled release of fertilizers |
| 06/11/1991 | US5022182 Permeable receptacle of nutrients and moisture |
| 05/21/1991 | US5016548 Method of planting seedlings |
| 05/08/1991 | DE4035223A1 Component for timed release of active material into soil - where active ingredients are contained in degradable polyethylene film on various thicknesses or contg. degradation initiators |
| 05/02/1991 | DE3935533A1 Machine for distributing mulch or compost - has rectangular open top box with outlets in bottom |
| 04/09/1991 | US5005345 Adding humectant |
| 01/29/1991 | US4987841 Coulter wheel assembly including applying dry or liquid fertilizer |
| 01/02/1991 | EP0405944A1 A fertilizing device |
| 11/28/1990 | CN1010544B Determination of soil fertility and optimization for manure-applying |
| 11/06/1990 | CA1275864C Deep band fertilizer and double side band seeding attachment |
| 09/27/1990 | DE4014563A1 Ecologically sound agricultural system - reduces prodn. surpluses and promotes nature protection by setting land aside |
| 08/01/1990 | EP0289517B1 Process and device for loosening soil |
| 06/27/1990 | EP0375615A2 Method of treating water containing fertilisers |
| 06/21/1990 | CA2005970A1 Method of treating water containing fertilisers |
| 06/19/1990 | US4934288 Tool for fertilizing plants, trees and shrubs |
| 06/05/1990 | US4930431 No-till field implement |
| 05/30/1990 | EP0370593A2 Soil chemical sensor and precision method for determining the amount of agricultural chemicals |
| 05/23/1990 | EP0369766A2 Apparatus for sowing granular material |
| 03/07/1990 | EP0356755A1 Device for slow release fertilisation |
| 02/08/1990 | DE3844555A1 Method of determining optimal nitrogen, potassium and phosphate fertiliser combinations for a quality-orientated production of agricultural produce in crop plants |
| 01/17/1990 | CN1038744A Method of planting seedlings |
| 11/21/1989 | US4881344 Sleeve for plant germination substrate |
| 11/14/1989 | EP0326594A4 Aqueous boron-containing compositions. |
| 09/20/1989 | EP0332733A1 Substrate envelope for cultivating plants |
| 08/09/1989 | EP0326594A1 Aqueous boron-containing compositions |
| 07/04/1989 | US4844725 Aqueous boron-containing compositions |
| 06/13/1989 | US4839051 Waste water flows through sloping zone containing soil and plants; free of chemical additives |
| 05/10/1989 | CN1032724A Determination of soil fertility and optimization for manure-applying |
| 02/09/1989 | DE3731094C1 Fertiliser stick and method for its production |
| 02/09/1989 | DE3725127A1 Method for improving the discharge technique for liquid manure used for agricultural purposes |
| 01/12/1989 | WO1989000154A1 Aqueous boron-containing compositions |
| 01/04/1989 | CN2030005U Pipeline applying fertilizer device |