China boron humate manufacturersselect 2020 high quality boron humate products in best price from certified chinese fertilizer manufacturers, iron fertilizer suppliers, wholesalers and factory on made-in-china Rbchem organic fertilizer liquid boron+zinc organic fertilizer_okchem. products. products; suppliers; hot search. isononanoic acid copper oxide titanium dioxide hemp seed oil vitamin e fumed silica antifoam defoamers silane coupling agent sodium citrate citric acid monohydrate citric acid anhydrous citric acid. 1. mixing 10-15g per kilo of feed for chickens, geese, ducks and turkeys. 2. mixing with nitrogen fertilizer: 5% of total blend i.e, 5kgs of boron humate per 100kgs of urea. 3. including at 7 % of fertilizer rate. i.e. 7 kg of boron granules with every 100 kg of granular fertilizer but do not exceed 12 kg per ha Boron humate. boron humate is black brown powder or granule, soluble in water and alkaline solution. it contains rich humic acid and organic boron, which is a organic chelator and microbial stimulator.