Abstract: The invention relates to a method for the automatic irrigation of plants, wherein the temporal progression of soil moisture is determined from measured soil moisture values, and said progression is used for the calculation of an optimized irrigation time duration, such that both water excess in the soil and soil drying are avoided as much as possible. Preferably, the time duration of irrigation is constantly evaluated and optimized using comparisons of measured values with prespecified moisture- and dryness threshold values (GWmoist, GWdry), and automatically adjusted to changing environmental conditions and/or plant requirements.

Abstract: A mobile apparatus and a process for adequately irrigating soil, wherein the apparatus has an irrigation unit for irrigating soil and a mobile microwave measurement unit for determining the water content of the soil along a measurement path. A control unit is used to irrigate the soil along the measurement path depending on the measured water content. The apparatus preferably also has a water tank and leaves an area of soil to be irrigated autonomously.

Abstract: A method for the automatic irrigation of plants, wherein the temporal progression of soil moisture is determined from measured soil moisture values, and said progression is used for the calculation of an optimized irrigation time duration, such that both water excess in the soil and soil drying are avoided as much as possible. Preferably, the time duration of irrigation is constantly evaluated and optimized using comparisons of measured values with prespecified moisture- and dryness threshold values (GWmoist, GWdry), and automatically adjusted to changing environmental conditions and/or plant requirements.

Abstract: A mobile apparatus and process for adequately irrigating soil, wherein the apparatus has an irrigation unit for irrigating soil and a mobile microwave measurement unit for determining the water content of the soil along a measurement path. A control unit is used to irrigate the soil along the measurement path depending on the measured water content. The apparatus preferably also has a water tank and leaves an area of soil to be irrigated autonomously.

Abstract: A method for the automatic irrigation of plants, wherein the temporal progression of soil moisture is determined from measured soil moisture values, and said progression is used for the calculation of an optimized irrigation time duration, such that both water excess in the soil and soil drying are avoided as much as possible. Preferably, the time duration of irrigation is constantly evaluated and optimized using comparisons of measured values with prespecified moisture- and dryness threshold values (GWmoist, GWdry), and automatically adjusted to changing environmental conditions and/or plant requirements.

Abstract: The invention relates to a method and device for determining the water content of a medium, particularly of soils and the like, in which a probe or sensor (8) located in the medium is heated. A temporary change in temperature is effected by dissipating the thermal energy through the moisture in the area surrounding the probe, this change in temperature being used for determining the moisture content of the medium. An intermediate layer (13) is placed between the probe and the surrounding medium and is absorbent and mechanically deformable for mechanically coupling the probe to the surrounding medium and for decoupling the probe and the surrounding medium thereby enabling a precise measurement of moisture content to ensue while being subjected to the least possible thermal influence by the largely undetermined surrounding medium.

Abstract: The invention relates to a method and a device (30) for watering plants by means of an electronically operating control system. The substrate moisture is measured at time intervals, and the measured values of a plurality of measurements are stored. The measured values that have been stored are used to identify a trend in the moisture content of the substrate, and this trend is used to adjust a quantity of water to be applied. A number of measurement cycles taking place between two watering cycles is preferably used to readjust the quantity of water.

Abstract: The invention relates to a sensor for measuring the water content or moisture content in a solid matter medium, in particular to a ground humidity sensor, as well as to a device for use with a sensor for improving its accuracy. The sensor, or at least the region of the sensor designed for measurement, is surrounded by an interface, the interface absorbing and releasing moisture, as well as designed in a mechanically flexible manner, such that the interface may be adapted to a non-constant or not clearly defined surface of the solid matter medium surrounding the sensor, i.e. to the earth. By way of this, the contact surface between the sensor and the medium is optimized, and air gaps, impressions of stones, etc., are compensated or bridged. The interface is preferably manufactured of a felt of plastic fibers, and is exchangeably attached via a sensor or sensor head.

Abstract: The invention relates to a method and device for determining the water content of a medium, particularly of soils and the like, in which a probe or sensor (8) located in the medium is heated. A temporary change in temperature is effected by dissipating the thermal energy through the moisture in the area surrounding the probe, this change in temperature being used for determining the moisture content of the medium. An intermediate layer (13) is placed between the probe and the surrounding medium and is absorbent and mechanically deformable for mechanically coupling the probe to the surrounding medium and for decoupling the probe and the surrounding medium thereby enabling a precise measurement of moisture content to ensue while being subjected to the least possible thermal influence by the largely undetermined surrounding medium.