1838results about "Weed killers" patented technology

Automatic pesticide, insecticide, repellant, poison, air freshener, disinfectant or other spray-type delivery systems are proposed for automating the delivery of these items to areas, for controlling pests easier, for improving environmental conditions, and for making it easier to freshen the air and to disinfect areas. The device includes a logic circuit and mechanisms containing a circuit that will enable a user to program the device to discharge a spray of its poison, disinfecting or air freshening spray(s) at a pre-selected time interval or day/time interval chosen in the unit's memory. An electromechanical valve opens to let contents escape when the spraying mechanism of the system is activated. The valve connects to a pressurized spray cylinder and it releases a controlled burst of insecticide, pesticide, repellant, disinfectant, and or air freshener as programmed. Control circuits allow the user to set when the system goes off.

Methods for making transgenic plants that are resistant to HPPD herbicides are presented. Polynucleotides other than those from Pseudomonas fluorescens that encode resistant HPPD enzymes are enclosed for use in the process of making transgenic plants that are tolerant to HPPD-inhibiting herbicides.

A method and system of treating plants is provided. The method includes measuring optical properties of a plant using a plurality of spectral bands. The method further includes calculating in a computational device at least two vegetative indexes using the optical properties, each of the at least two vegetative indexes correlating to one or more plant growth parameters. The method further includes calculating in the computational device a water invariant chlorophyll index from at least two vegetative indexes using the plurality of spectral bands. The also provides for treating one or more of the plants based on the water invariant chlorophyll index.

A composition is provided that contains one or more molecular encapsulation agents within each of which is encapsulated one or more cyclopropenes and that contains one or more adjuvants selected from the group consisting of surfactants, alcohols, hydrocarbon oils, and mixtures thereof. Also provided is a method that includes the step of contacting such compositions to one or more plants or plant parts.

A portable, steam weed killing apparatus designed to be environmentally friendly, economical, fast acting and used by an individual standing in an upright position. The apparatus is intended for killing weeds and unwanted plants in gardens, flower beds and along sidewalks by application of concentrated heated water or steam thereto. The apparatus includes electrically powered, portable steam generating unit containing a water reservoir, an electric pump and an electric steam heater. The apparatus also includes an elongated, rigid guide bar with a weed cover attached to its distal end. A flexible hose delivers steam from the steam generating unit to the weed cover. During use, the weed cover is placed over the undesired plant and the steam generating unit is operated to deliver a concentrated amount of steam to the plant located inside the weed cover. In another embodiment of the invention, the steam generating unit includes a super-heating steam unit which provides saturated, super-heated steam for greater killing effect.

Therefore, the illustrative embodiments provide a computer program product comprising a computer recordable media having computer usable program code. Resource needs are determined for each plant in a plurality of plants to form individual resource needs. Conditions are identified in an environment in which the plurality of plants are located by receiving input from a sensor system to form current conditions. A plurality of per plant prescriptions are calculated for the plurality of plants using the individual resource needs and the current conditions. The application of the resource is controlled from a mobile utility vehicle to each plant in the plurality of plants using the plurality of per plant prescriptions.

The invention relates to a high-efficiency weeding robot which belongs to the technical field of agricultural machinery application. The robot comprises an automatic navigation and weed identification camera head and a control system, wherein a weeding device comprises an interline cutting and smearing weeding mechanism arranged below a trolley, and an inline weeding mechanism; the cylinder bodies of a left horizontal cylinder and a right horizontal cylinder of the inline weeding mechanism are respectively arranged at the bottom of the trolley; horizontal piston rods of the left horizontal cylinder and the right horizontal cylinder are respectively and fixedly connected with installment frames of a left vertical cylinder and a right vertical cylinder; the upper ends of the installment frames of the left vertical cylinder and the right vertical cylinder are installed in horizontal rails on the trolley to form a moving pair; the cylinders of the left vertical cylinder and the right vertical cylinder are respectively installed on the installment frames of the left vertical cylinder and the right vertical cylinder; and the lower ends of vertical pistons of the left vertical cylinder and the right vertical cylinder are respectively connected with a left end effector and a right end effector the bottoms of which are provided with electric circular saws. The invention can remove weeds in lines and among lines with high working speed and high weeding efficiency, thereby radically solving the difficulty of removing weeds in lines.

A high speed, low cost, wide spectrum light scanning and sensor unit (10) for receiving reflected light from an object and diffracting the light into segments of wavelengths and a linear sensor array (32) having elements positioned to receive the segments and to measure the relative magnitude of such segments to define a spectral distribution of the object together with a digital identifier-controller (36) connected to said sensing device and having a memory for memorizing a spectral distribution of light representing a first standard object, and additional memory for receiving a spectral distributions of other objects and programmable logic circuitry containing a program for determining the similarity between the standard object and the other objects.

Disclosed herein is a light fixture. The light fixture includes at least one first light source that emits at a peak wavelength in a range of approximately 380 nm to approximately 420 nm and at least one second light source that emits at a different peak wavelength, wherein a combined light output of the at least one first light source and the at least one second light source emits a colored light that is perceived as white light. The white light is defined by having a color rendering index (CRI) value of more than approximately 50. The at least one second light source that emits at a different peak wavelength consists of an xy coordinate on a International Commission on Illumination (CIE) 1931 xy color space diagram above a black body curve within a bounded area defined by a first line of approximately y=2.23989x−0.382773 and a second line of approximately y=1.1551x−0.195082. The combined light output has a proportion of spectral energy measured in the approximately 380 nm to approximately 420 nm range of greater than approximately 20%.

A system and method for removing harmful biological and organic substances from an enclosure, vehicle or container includes protecting heat-sensitive articles within the enclosure. A plurality of temperature probes are positioned at predetermined locations within the enclosure. The air within the structure is heated to a predetermined temperature up to 400° F. to kill organisms and cause harmful substances in the enclosure to migrate into the ambient air. A negative pressure is created in the enclosure and the heated air carrying the harmful substances passed through a filter and is then vented from the enclosure and passed through a filter to remove the harmful substances from the heated air. The system effectively kills, molds, viruses and bacteria and reduces the levels of allergens and volatile organic compounds in the enclosure.

The invention relates to a method and system for volume-specific treatment of ground and plants as required. The aim of the invention is to improve a method and system as above, such that the distribution of plants is scanned with complete spatial coverage and the treatment of the ground or plant condition is efficiently controlled, by simultaneously taking account of morphological, plant physiological, equipment performance and specific local properties.

A method of destroying or controlling unwanted vegetation and agricultural pests is disclosed. The method produces a jet stream of treatment fluid, being mixed combustion gas and superheated or dry steam for application to thermally destroy unwanted vegetation and posts. The method involves the use of a hydrocarbon burner and a water source.

The present invention belongs to the field of pasture plant cultication technology, in the concrete, it relates to a cultivation method capable of raising drought resistance of Lucerne and protecting Lucerne from winter freezing injury. Said method includes the following steps: selecting cold resistant variety, setecting field, weeding and fertilizer application, ridge forming, ridge-seeding and field management.

The invention relates to a method for carrying out real-time identification and targeted spraying on cotton field weedsVisual system hardwares, comprising an additional light source, a CCD color video camera, an A/D converter, a DSP image processor, a D/A converter and an LCD (liquid crystal display) display; the additional light source can improve the situation in which light is not uniform or bright enough under natural conditions.The identification method comprises the following steps: a video camera installed at the front part of a weeding machine captures cotton field images in real time; after A/D conversion, the images are stored in a chip memory for being called by a DSP (Digital Signal Processor); the DSP extracts frame images from video streams and processes the frame images; green plants from soil backgrounds are segmented by the Cr characteristic method; the images are equally divided into four lines according to the arrangement of spray nozzles with each spray nozzle corresponding to a line; position features are used to recognize weeds among the lines; the weeds are recognized according to area and form features of blades; weeds position information is transmitted to a microcontroller; and the spray nozzles are opened to carry out accurate targeted spraying of weed killer to save pesticides and reduce pollution to the environment.

A method of killing or controlling vegetation particularly along roadside berms involves the application of pressurized hot water from a moving applicator head in close proximity to the ground. The pressurized hot water is applied as jets of hot water from an applicator head at a temperature in the range of 100 DEG C. to 110 DEG C. and the flow rate of about 10 liters/minute supplied from one or more pumps operating at a pump pressure of between 200 to 100 psi. The apparatus is mounted on or in a vehicle such as a van, containing a water tank (1), a boiler (2) arranged to heat pressurized water supplied by a pump (4) under pressure to the boiler (2). The pump (4) is a piston pump which supplies the pressurized water through the boiler to a hand held applicator (5) or optionally a towed boom applicator (6). The hand held applicator (5) has an applicator head inside a shroud so that the pressurized hot water is applied to the surface of vegetation as jets of water within the confines of the shroud.

A method of distinguishing individual plants within a row of plants, including directing radiation at the row of plants at an angle selected to illuminate a portion of the plant and cast a shadow at the plant center, collecting an image from the radiation reflected off of two or more contiguous plants with a detector, identifying a continuous foreground region indicative of a plant within the image, identifying points of interest within the region, classifying the points of interest as plant centers and non-plant centers, and segmenting the region into sub-regions, each sub-region encompassing a single point of interest classified as a plant center.

An apparatus (22) for selectively discriminating vegetation or plant matter (28) comprises a light emitting means (24), a light sensing means (30) and a distance sensing means (34). The light emitting means generates a beam of light (26) that can be directed onto plants or plant matter moving relative to the apparatus. The light sensing means senses light transmitted from said light emitting means and reflected from the plants or plant matter, and generates a reflection signal in response to the sensing of the reflected light. The distance sensing means senses the relative distance moved and generates a distance signal. A processing means (32) is operatively connected to the light sensing means and the distance sensing means to combine the reflection signal and distance signal to discriminate different types of plants or plant matter.

The invention discloses a method for directly seeding rice, which comprises the following steps of: preparing soil; preparing a slag fertilizer; soaking seeds and accelerating germination; digging holes and seeding in a dry field; weeding; fertilizing in a land for growing field crops; thinning; and preventing and controlling plant diseases and insect pests. Since the method for directly seeding the rice directly digs holes and seeds in the field, the method can ensure that rice in a dry area grows normally by using a little amount of water before the head sprouting process of the rice, achieves good drought-resisting and water-saving effects, eliminates the transplanting step, avoids damaging root systems of the rice, strengthens the tillering capacity of the rice, achieves high yield, simplifies the working procedure, saves labor force, has low production cost, high efficiency and convenient operation, and can be widely used for planting rice in mountain areas, hilly areas, easily droughty areas and water-lacking dead angles of pieces of paddy fields.

The invention belongs to the technical field of modern agriculture equipment and particularly relates to a toward-target spraying machine and method for crops in the field. In the prior art, because the crops in the field are sprayed in a manually or mechanically continuous mode, labor intensity is high, working efficiency is low, pesticide waste is caused, and the environment is polluted. The toward-target spraying machine and method for the crops in the field are designed and mainly used for performing pesticide spraying and foliage dressing on the crops in the field and preventing and treating the nutritional deficiency disease of the crops. Information of the crops in the field is obtained through a machine vision system and input into a control system, and the control system outputs a signal to control mechanisms of the spraying machine to move according to the input speed information and crop line trail information so that spraying nozzles can be turned on instantaneously to spray pesticides when aligning with the crops. Because continuous spraying is changed to be intermittent automatic toward-target spraying, working efficiency is improved, the pesticides are saved, and environment pollution is reduced.