The present disclosure relates to the field of ecological restoration of a coal gangue hill, and in particular, to a solid waste-based porous material, a method for preparing the solid waste-based porous material, and a method of ecological restoration of the coal gangue hill by applying the solid waste-based porous material. A coal-based solid waste restoration material and mycorrhizal solid bacterial agent are mixed to restore the coal gangue hill, the coal-based solid waste restoration material is prepared by mixing coal-based solid waste porous materials, low-rank coal, and waste organic matter and adding a microbial quickly decomposition agent for aerobic fermentation and standing.

In one aspect, a system for monitoring a level of hydraulic fluid in an agricultural sprayer includes a drive system, a hydraulic fluid system, and a fill level sensor. The system also includes a computing system communicatively coupled to both the drive system and the fill level sensor. The computing system is configured to monitor the level of hydraulic fluid within the hydraulic fluid reservoir based on data received from the fill level sensor. The computing system is further configured to detect a leak condition in the hydraulic fluid system based at least in part on the monitored level of the hydraulic fluid within the hydraulic fluid reservoir and control an operation of the drive system to reduce the ground speed of the agricultural sprayer in response to detecting the leak condition.

With the use of low cost microphones mounted near each nozzle, sound signatures of the nozzles may be captured and compared to a baseline calibration measurement corresponding to a substantially new nozzle to determine if the nozzle is worn out. Sound signatures may be periodically captured and compared to the baseline calibration measurement to provide a continuous indicator of wear out for each nozzle. The invention has the advantage of being relatively low cost with ceramic microphones, for example, and with little or no moving parts required.

The present invention relates to methods and vehicles for separately applying a solid fertilizer and a liquid fertilizer additive to a working area of a field.

An apparatus and methods for delivering a particulate product onto a soil surface proximate adjacently spaced crop rows. The apparatus includes a plurality of drop members supported by and spaced laterally along a boom structure such that each drop member is positioned between two adjacently spaced crop rows. The drop member extends downwardly from the boom structure toward the soil surface. The drop member supports a hopper which receives a quantity of particulate product. Diverging particulate product passageways supported from a lower portion of the drop member deliver the particulate product from the hoppers onto the soil surface adjacent the two adjacently spaced crop rows. In alternative embodiments, the drop members may also support liquid passageways for delivering liquid product to the soil surface with the particulate product and the drop members may support spray assemblies for spraying plants in the adjacent crop rows.

An agricultural distribution machine for spreading liquid and/or solid plant protection products by means of a distribution apparatus which is height-adjustably arranged on a frame of the distribution machine having a plurality of nozzle holders with spray nozzles mounted thereon arranged spaced apart from each other for the purpose of distributing the plant protection product to be spread. Activation of the distribution apparatus is carried out based on at 10 least two spray profiles stored in a computer unit, each spray profile composed of a plurality of parameters. In order to achieve a consistent distribution quality of the plant protection product, different spray profiles can be stored in a computer unit and, in the instance of a deviation of the parameters of a spray profile, an automated activation of the distribution machine or of the distribution 15 apparatus to the parameters of a second spray profile is carried out.

A liquid dispensing apparatus for applying liquid products to row crops. The liquid dispensing apparatus includes a plurality of drop assemblies supported by and laterally spaced along a boom structure. Each of the drop assemblies includes dribble hoses for dribbling a liquid product onto the soil in a rhizosphere of adjacent crop rows. The drop assemblies may include a spray assembly for spraying the row crops. The dribble hoses may be supported by a base unit with positionable support brackets

A method for applying spray liquid by an agricultural spraying device includes steps of: applying the spray liquid to an agricultural area by a plurality of spraying elements which are arranged on a sprayer boom of the agricultural spraying device, and detecting plant rows on the agricultural area during the application of the spray liquid, the spray liquid being applied by at least one spraying element with a first spray pattern in row areas of the agricultural area which have plant rows, and being applied by at least another spraying element with a second spray pattern in row-free areas of the agricultural area without plant rows.

An agricultural method includes providing a positive air pressure chamber to prevent outside contaminants from entering the chamber; growing crops in a plurality of cells in the chamber, each cell having multi-grow benches or levels, each cell further having connectors to vertical hoists for vertical movements in the chamber; maintaining pre-set temperature, humidity, carbon dioxide, watering and lighting levels to achieve predetermined plant growth; using motorized transport rails to deliver benches for operations including seeding, harvesting, grow media recovery, and bench wash; dispensing seeds in the cell with a mechanical seeder coupled to the transport rails; growing the crops with computer controlled nutrients, light and air level; and harvesting the crops and delivering the harvested crop at a selected outlet of the chamber.

The invention relates to a device for moistening and/or fertilizing plants (1), comprising a movable spray lance (3) with at least one spray nozzle (4) arranged on the spray lance (3), wherein a preferably linear guide rail (2) is provided, wherein the spray lance (3) is movably guided in the guide rail (2) in a trajectory extending parallel to the guide rail (2) and extends substantially normal to this trajectory, and wherein a drive, preferably a linear drive (11), is arranged for moving the spray lance in the area of the guide rail (2). The invention further relates to a system for cultivating plants without a substrate, comprising the device according to the invention.