摘要:
A capacitance-based moisture sensor may include a sleeve having an internal cavity, a container filled with soil or other material inserted into the internal cavity, and a pair of ring-shaped conductive bands around the exterior of the sleeve forming a capacitor and providing a frequency output. The rings positioned around a perimeter of the sleeve may be connected to a fixed inductor to form an oscillator with a variable frequency output. The sensor may be calibrated from the frequency output for each of a plurality of substances, measuring the volumetric water content for saturation of the material, and determining at least one fitting constant in an equation wherein volumetric water content is a function of the frequency output and a plurality of fitting constants.
摘要:
A capacitance-based moisture sensor may include a sleeve having an internal cavity, a container filled with soil or other material inserted into the internal cavity, and a pair of ring-shaped conductive bands around the exterior of the sleeve forming a capacitor and providing a frequency output. The rings positioned around a perimeter of the sleeve may be connected to a fixed inductor to form an oscillator with a variable frequency output. The sensor may be calibrated from the frequency output for each of a plurality of substances, measuring the volumetric water content for saturation of the material, and determining at least one fitting constant in an equation wherein volumetric water content is a function of the frequency output and a plurality of fitting constants.
摘要:
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.
摘要:
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.
摘要:
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.
摘要:
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.
摘要:
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. The process includes establishing, in a field to be treated, at least one predetermined area of high nitrogen reference; photographing from the air, georeferenced portions of the field, using a particular spatial resolution; differentiating soil and crops, in the photographs thus obtained by segmenting images to select crop pixels; preparing a relative greenness map of the field from green plane based upon the high nitrogen reference area, the relative greenness map providing crop information having spatial resolution equivalent to the particular spatial resolution; and treating the crops in the field in accordance with the relative greenness map.
摘要:
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.
摘要:
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. A method of determining and recording locational variations in characteristics of a crop being harvested includes (a) obtaining a sample of the crop at each of a plurality of locations within the field and uniquely identifying each sample; (b) obtaining a locational description of each sample site; (c) correlating the sample identifications and corresponding locational descriptions into first data pairs; (d) recording the first data pairs in a first data file; (e) analyzing the samples to generate location-specific crop data; (f) correlating the location-specific crop data and the corresponding locational descriptions into second data pairs; and (g) recording the second data pairs in a second data file.
摘要:
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.