Boron is an indispensable trace element for the normal development of plants, and can promote the lush
growth of plants and the normal development of reproductive organs. According to the available
phosphorus content in the soil, reasonable supply of boron is one of the key measures to improve crop
yield and quality.
Boron and methylimine form a brown-yellow complex under weak acid conditions, with a characteristic
absorption peak at 420 nm, and the effective boron content in the soil can be calculated.
Reagents and Equipment Required but Not Provided:
Spectrophotometer, adjustable transferpettor, balance, mortar/ homogenizer, centrifuge, water-bath, 1mL
glass cuvette, sieve (40 mesh), ice and distilled water.
