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Introduction
Potassium is a necessary nutrient for soil in which rice grain is grown, as it is critical in maximising yield.
In order to profitably produce rice, reliable information regarding the potassium content of the soil must be available to farmers. Thus, we can analyse the potassium content of the plant tissue in the roots of the rice grain.
To determine the potassium content, the Horiba LAQUAtwin K-11 potassium ion (K+) meter can be used. This is an easy and quick method used to determine the potassium content of soil for the growth of rice crops.
Method
- The above ground portion of the crop is separated from the root using shears.
- The lower stem is washed of soil.
- The stem is cut into 1 cm pieces.
- The pieces of stem are frozen overnight.
- A frozen piece of stem is placed in a sap press to obtain the sap.
- A small sample of the sap is placed on the sensor of the LAQUAtwin K-11 meter and the potassium content is measured after one minute.
- To repeat sampling, wash the sensor with tap water and pat dry with a paper tissue.
LAQUAtwin: the only meters with flat sensor technology.
HORIBA’s highly-sensitive, flat sensor technology opens up new possibilities for sampling and sample types. Only a small amount of sample is required, so you can easily sample in situ without the need for beakers or other labware. Sensors are easily replaced as required.
Calibrate and measure at the touch of a button — the smiley face will tell you when the result can be read.
LAQUAtwin is fully waterproof and dustproof.
The meter and sensor are fully waterproof* and dustproof, so you can take it anywhere.
* IP67 rated. Will withstand immersion for 30 minutes at 1 m. Not suitable for underwater use.
Carry case comes as standard for handy portability.
The compact carry case contains everything you need for your measurements, including the standard solution and sampling sheets.