Soil pH Level Meter Tester for Plants Crops Flowers Vegetable Acidity Moisture PH Measurement Garden Tools MAPH-010

Features:
Battery is no need.
Could test soil pH soil fertility
Suggest to use indoors or outdoors
convenient to use, simple to operate, solid quality
Accurate results

Specifications:
Material: Plastic
Soil PH Measurement Range: 2.5 - 10.0 pH
Accuracy: ±0.25 pH(20℃)±0.2 pH (Suitable for farm or education experiments)
Working Temperature: 0 - 50°C(32-122°F)
Calibration: Manual point 1
Measurements: About 11cm/4.33" X 6cm/2.36"
Length of Probe: 16cm

Notes:
1. Soil pH value is a very important factor for the quality of crops.
2. Most of crops cannot survive in too acid or too alkaline soil.
3. Get the right pH reading for your Crop is very important.

Using Method:
1. Measuring soil pH, as far as possible to probe deeply into the earth and probe the upper portion for about 1 cm.
2. On the table is 2.5-9 numerical, numerical 7 basic is neutral, the smaller the number shows that the greater the acidity, please adjust soil pH value according to plant varieties.
4. Please pay attention that insert electrodes without touching the stone, not too hard, otherwise easy to damage the electrode, clean electrode after use.

Soil pH
Soil pH, also known as "soil reaction." It is the soil solution of the acid-base reaction.
Mainly depends on the concentration of hydrogen ions in the soil solution at pH values. pH of
the solution is equal to 7 neutral solution; pH of less than 7, the acid reaction; pH value greater
than 7 is alkaline reaction. Soil pH can generally be divided into the following levels:

pH of soil pH
<4.5 strong acidic
4.5-5.5 strongly acidic
5.5-6.5 Acid
6.5-7.5 neutral
7.5-8.5 Alkaline
8.5-9.5 strongly alkaline
> 9.5 strong alkaline

Soil pH on soil fertility and a great influence on plant growth, China's northwest, north many
soil pH value, pH value of small red soil. Therefore can be grown and adapted to soil pH and
plant crops. Such as acid red soil area planted hi tea, and strong alkali such as alfalfa. Soil pH
effects on nutrient availability is also great, such as neutral soil phosphorus availability large;
alkaline soil trace elements (manganese, copper, zinc, etc.) effectiveness is poor. In agricultural
production should be noted that the pH of the soil, and actively take measures to adjust.

Common crop optimum soil pH range is how much?
Soil pH on plant nutrient availability, soil structural and crop growth have a great relationship.
First, soil organic state by microbial nutrients to participate in activities in order to make it
into nutrients for plant uptake of available state, while the majority of microorganisms involved
in decomposition of organic matter in the near-neutral growth environment, so the effective soil
nutrient in general close to neutral reaction is the best. Secondly, structural soil pH also affects
the soil. Acidic soil, the hydrogen ion concentration, easy to colloids leaching out calcium
substitution, it is easy to acidic soil compaction. The substitution of the alkaline soil contains
large amounts of sodium ions and hydroxide ions, so that soil particles dispersed, dry compaction,
resulting in poor structural earth. In addition, soil pH and plant growth also has a very close
relationship. In nature, some plants on soil pH conditions demanding that they can only be in a
particular pH range grow, these plants from the soil pH can be indicative that, so called
indicator plants. Such as azalea only grow in acidic soils, known acidic soil indicator plants;
Kashiwagi is calcareous soil indicator plants, and salsa is an alkaline earth indicator plants.
Different cultivated plants have different optimum growth pH range (see table below),
knowing their respective optimal growth range, we can according to local conditions based on soil
pH, choose the right crops; or according to crop, adjust the soil pH to the proper range.