Up to 1 957 the phosphate and the potassium chloride were applied in furrows once a year and the ammonium three times a year ... 0.25 g.of copper and 0.16 g. of boron per liter, the two first elements in the form of sulphate and the last one in the form of borax (sodium retro- borate) . ... The average cost of processing 100 lbs. of cherry coffee based upon figures from the 30 farms surveyed reached $1 . 17.
|Title||:||Coffee and Cacao Technical Services|
|Publisher||:||Bib. Orton IICA / CATIE -|