Abstract: A process for determining the health of crops in a field and for correcting deficiencies in the health of the crops is disclosed. The process includes georeferencing aerial photographs of at least a portion of the field, the aerial photographs having a particular spatial resolution; determining the green plane in the aerial photographs thus taken; preparing a relative greenness map of the field based upon the nitrogen reference area, the relative greenness map providing crop status information having spatial resolution equivalent to the spatial resolution of the aerial photographs; converting the relative greenness map to a nitrogen recommendation map having spatial resolution equivalent to the spatial resolution of the photographs; and applying nitrogen to the field according to the nitrogen recommendation map, whereby the nitrogen is applied to the field without loss of spatial information. A process for treating crops is also disclosed.

Abstract: A process for determining the health of crops in a field and for correcting deficiencies in the health of the crops is disclosed. The process includes georeferencing aerial photographs of at least a portion of the field, the aerial photographs having a particular spatial resolution; determining the green plane in the aerial photographs thus taken; preparing a relative greenness map of the field based upon the nitrogen reference area, the relative greenness map providing crop status information having spatial resolution equivalent to the spatial resolution of the aerial photographs; converting the relative greenness map to a nitrogen recommendation map having spatial resolution equivalent to the spatial resolution of the photographs; and applying nitrogen to the field according to the nitrogen recommendation map, whereby the nitrogen is applied to the field without loss of spatial information. A process for treating crops is also disclosed.

Abstract: An apparatus and method is disclosed for producing a plurality of video signals to be processed by an image processor, where the video signals are representative of light reflected from a source region, such as a segment of an agricultural field. The apparatus includes a light receiving unit for receiving the light reflected from the source region and a multi-spectral sensor coupled to the light receiving unit for converting the light received by the light receiving unit into the video signals. The multi-spectral sensor includes a prism for dividing the light received by the light receiving unit into a plurality of light components, a plurality of light-detecting arrays each having a plurality of pixels for receiving the light components and producing electronic signals in response thereto, and a sensor control circuit for converting the electronic signals into video signals and for controlling the responsiveness of the pixels of the light detecting arrays to the light components.

Abstract: A process for determining the health of crops in a field and treating the crops in accordance with that determination. The process first establishes, in a field in which the health of the crops is to be determined, at least one predetermined reference area of crops having a determined nutrient, e.g. nitrogen, content. Then, georeferenced aerial photographs are taken of at least a portion of the field. From the photographs, the green plane is determined. From the green plane, a relative greenness map of the field based upon the nitrogen reference area is prepared. The greenness map may be transmitted to a farm vehicle on the field and thereafter, the field may be selectively treated in accordance with the nutrient deficiencies detected and recorded on the greenness map.

Abstract: An agricultural system for acquiring grain samples from a field includes a combine, a grain sample acquiring apparatus for acquiring a grain sample at a plurality of locations within the field, a location signal generating circuit, and a data recorder which communicates with the location signal generating circuit and records the sample site locations.

Abstract: The invention relates to novel urease inhibited fertilizer compositions containing urea and a urease inhibiting amount of one or more diaminophosphinyl compounds having oxidized sulfur functions, and methods and composition for inhibiting the activity of urease through use of such compounds.

Abstract: The invention relates to novel urease inhibited fertilizer compositions containing urea and a urease inhibiting amount of one or more diaminophosphinyl compounds having oxidized sulfur functions, and methods and composition for inhibiting the activity of urease through use of such compounds.

Abstract: The invention relates to novel urease inhibited fertilizer compositions containing urea and a urease inhibiting amount of one or more diaminophosphinyl compounds having oxidized sulfur functions, and methods and composition for inhibiting the activity of urease through use of such compounds.

Abstract: The invention relates to novel urease inhibited fertilizer compositions containing urea and a urease inhibiting amount of one or more o-diaminophosphinyl derivatives of oximes, and methods and composition for inhibiting the activity of urease through use of such compounds.

Abstract: The invention rleates to novel urease inhibited fertilizer compositions containing urea, a urease inhibiting effective amount of phosphorotriamidate compounds, and a method and composition for using such compounds to inhibit the activity of urease.

Abstract: The invention relates to novel urease inhibited fertilizer compositions containing urea and a urease inhibiting amount of phosphorotriamidate compounds, and methods and composition for inhibiting the activity of urease through use of such compounds.

Abstract: Novel urease inhibiting phosphorothiolate compounds, urea based fertilizer compositions including such compounds, and methods and compositions for using such compounds to inhibit the activity of urease.

Abstract: The invention relates to novel urease inhibited fertilizer compositions containing urea and a urease inhibiting amount of one or more phosphoric triamide compounds, and methods and composition for inhibiting the urease catalyzed hydrolysis of urea through use of such compounds.

Abstract: The invention relates to novel urease inhibited fertilizer compositions containing urea and a urease inhibiting amount of hydroxamic acid or diaminophosphinyl compounds, and methods and composition for inhibiting the activity of urease through use of such compounds.

Abstract: The invention relates to novel urease inhibited fertilizer compositions containing urea and a urease inhibiting amount of novel poly-phosphorodiamide compounds.

Abstract: Novel urease inhibiting aminophenol compounds and urea based fertilizer compositions including such compounds, and methods and compositions for inhibiting the activity of urease through use of a urease inhibiting effective amount of one or more of the aforementioned aminophenol compounds.

Abstract: The invention relates to novel urease inhibited fertilizer compositions containing urea and a urease inhibiting amount of one or more aryl phosphoric triamide and aryl phosphorodiamidate compounds, and to methods and compositions for inhibiting the activity of urease through use of such compounds.

Abstract: The invention relates to novel urease and/or nitrification inhibited fertilizer compositions containing; and methods and compositions for inhibiting urease and/or nitrification through use of a urease and/or nitrification inhibiting amount of novel phosphoric triamide compounds.

Abstract: Novel urease inhibiting phosphorodiamide compounds, urea based fertilizer compositions including such compounds, and methods and composition for using said compounds to inhibit the catalytic activity of urease.

Abstract: Novel urease inhibiting phosphoroamide compounds and urea based fertilizer compositions including such compounds, and methods and compositions for inhibiting the activity of urease through use of a urease inhibiting effective amount of one or more of the aforementioned phosphoroamide compounds.