Abstract: Provided are a cultivation assisting device and a cultivation assisting method which are capable of assisting cultivators in cultivating crops using nanobubble water effectively. In order to assist cultivation of crops using nanobubble water, first information relating to a nanobubble water use condition is acquired for each cultivator cultivating a crop and second information relating to the result of cultivation is acquired for each cultivator; from the first information and second information of each cultivator, the correlation between the use condition and the result is determined; a selection of a result is accepted; and a use condition based on the selected result is derived on the basis of the correlation.

Abstract: The present invention addresses the problem of providing a spider mite control method that makes it possible to achieve high control effects without using a miticide. A spider mite control method in which nano-bubble water is applied to a plant.

Abstract: The present invention addresses the problem of providing a fertilizer absorption improvement method that makes it possible to conveniently improve fertilizer absorption. This fertilizer absorption improvement method involves applying nano-bubble water to a plant.

Abstract: Provided is a liquid supply apparatus which is capable of directly taking in a liquid from a flow channel and appropriately mixing a gas into the liquid when generating-nanobubbles in the liquid using an ultrafine bubble generating apparatus. The liquid supply apparatus comprises a flow channel for a liquid supplied from a liquid supply source and an ultrafine bubble generating apparatus for generating nanobubbles in the liquid. The ultrafine bubble generating apparatus is provided with: a liquid ejector for ejecting the liquid taken in from the flow channel; a gas mixer for pressurizing and mixing a gas into the liquid ejected from the liquid ejector; and a nanobubble-generating nozzle for generating nanobubbles in the liquid by passing the liquid with intermixed gas therethrough.

Abstract: Provided is an ultrafine bubble generating apparatus capable, when generating nanobubbles in a liquid, of appropriately mixing a gas into a liquid ejected from a liquid ejector. The ultrafine bubble generating apparatus includes a liquid ejector for ejecting a liquid, a gas mixer for pressurizing and mixing a gas into the liquid ejected from the liquid ejector, and an ultrafine bubble generator for generating nanobubbles in the liquid by passing the liquid with intermixed gas therethrough. Between the liquid ejector and the ultrafine bubble generator, the gas mixer pressurizes and mixes the gas into the liquid, which is flowing in a pressurized state toward the ultrafine bubble generator.

Abstract: The purpose of the present invention is to provide a method for producing fruit having improved quality which has fewer restrictions on place and the like and can be more casually used. This method for producing fruit having improved quality uses nanobubble water for a plant body belonging to fruit trees.