Oklahoma State University

Other

Gordon V Johnson

Marvin Lyle Stone

John Bruce Solie

William R Raun

Duane Needham

Kyle Freeman

An elongate mounting strip for mounting screens to structures includes an elongate base that can be secured to the structure with screws, bolts, rivets, adhesives, etc. The elongate base includes an array of relatively stiff filaments or hooks or posts over which the edge of the screen can be stretched and secured. The filaments or hooks engage through and hook onto the openings in the screen to secure the screen in place. A protective and decorative cover is provided for concealing this attachment.

Mounting strip for screens

A method for in-season macro and micronutrient application based on predicted yield potential, coefficient of variation, and a nutrient response index. The inventive method includes the steps of: determining a nutrient response index for a field; determining the normalized difference vegetation index (NDVI) of an area to fertilize; determining the coefficient of variation of NDVI over a plot; determining a predicted crop yield for the area without additional nutrient; determining an attainable crop yield for the area with additional nutrient; determining the nutrient requirement for the area as the difference between the nutrient removal at the attainable yield minus the nutrient removal at the predicted yield, adjusted by the efficiency of nutrient utilization in the particular crop as indicated by the coefficient of variation.

Use of within-field-element-size CV for improved nutrient fertilization in crop production

A method for in-season macro and micronutrient application based on predicted yield potential and a nutrient response index. The inventive method includes the steps of: determining a nutrient response index for a field; determining the normalized difference vegetation index (NDVI) of an area to fertilize; determining a predicted crop yield for the area; determining an attainable crop yield for the area; determining the nutrient requirement for the area as the difference between the nutrient removal at the attainable yield minus the nutrient removal at the predicted yield, adjusted by the efficiency of nutrient uptake in the particular crop. In one preferred embodiment, processing requirements at the time of application of the nutrient are eased by generating a lookup table of nutrient requirement relative to measured NDVI prior to application of the nutrient.

Process for in-season fertilizer nutrient application based on predicted yield potential

A spectral reflectance sensor including: a light source for emitting a modulated beam of red light; a light source for emitting a modulated beam of near infrared light; a receiver for receiving reflected light produced by either the red source or the near infrared source; a receiver for receiving incident light from either the red source or the infrared source; a signal conditioner responsive to the modulation such that the signals produced by the receivers in response to reflected and incident light from the source can be discriminated from signals produced by ambient light; and a microprocessor having an input such that the microprocessor can determine the intensities of incident red light, reflected red light; incident near infrared light; and reflected near infrared light. From these intensities, and by knowing the growing days since emergence or planting, the sensor can calculate the mid-growing season nitrogen fertilizer requirements of a plant.

Optical spectral reflectance sensor and controller

A method for in-season fertilizer nitrogen application based on predicted yield potential and a nutrient response index. The inventive method includes the steps of: determining a nutrient response index for a field; determining the normalized difference vegetation index of an area to fertilize; determining a predicted crop yield for the area; determining an attainable crop yield for the area; determining nitrogen uptake for the vegetation within the area; and determining the amount of fertilizer nitrogen required by said vegetation. In one embodiment, the normalized difference vegetation index is determined by scanning an area to fertilize with a spectral reflectance sensor which provides reflectance values for red light and near infrared light. The normalized difference vegetation index (NDVI) is defined by: NDVI&equals;(NIR&minus;red)/(NIR&plus;red) where &ldquo;NIR&rdquo; is the reflectance value for near infrared light and &ldquo;red&rdquo; is the reflectance value for red light.

Process for in-season fertilizer nitrogen application based on predicted yield potential

A pumping apparatus is set forth for use in a flowing well which flows into the well from formations on the exterior thereby producing a mix of oil and water. A column is accumulated where oil stratifies on the top. An oil producing pump is positioned to draw from the top portions of the column and produce oil to the surface through a production tubing string in response to operation of a sucker rod actuated pump. The sucker rod string in addition operates a water expelling pump on the opposite stroke, thereby forcing water out of the accumulated column of liquid. The water is returned from the cased well into a water receiving formation on the exterior.

Oil well pumping mechanism providing water removal without lifting

A soil sampling device secured to a vehicle for taking soil samples while the vehicle is moving is provided with a housing having a first and second portion. The first portion has a chamber extending outwardly therefrom and the second portion has a soil inlet opening. Soil retaining baffles are disposed within the second portion adjacent the soil inlet opening. The housing is pivotally connected to a mounting bar and brace, which is secured to the vehicle. A hydraulic piston rotates the housing so that the second portion strikes the ground and a small portion of soil is injected into the inlet opening and retained by the soil retaining baffles. The housing is rotated and the captured soil is directed to the chamber whereupon the soil sampler is in position to take another soil sample.

Growing community of inventors

Stillwater, OK, United States of America

Gordon V Johnson