... K organic matter, salinity, and PH in the soil, fertilizer and plantsWith the function of time display, can automatically record ... tested sampleCan store about 1000 groups datum (time, place, fertilizer), datum can be checked at any time.Can print testing ... so onBig LCD display, easy to operateCan set crop variety, crop yield, fertilizer variety, and automatically count the fertilizing amountBuilt-in ...