KevinM - 11/29/2015 20:46
Tara I don't know how closely you read your citation but from the article:
"Seed is inoculated and treated with insecticide and fungicide. A common fertilizer formula we use is 02-20-18, at a rate of 202 lbs./acre.
That is how we manage a common soybean crop in Brazil. The difference between the regions is the fertilizer. In cerrado areas up north
(Mato Grosso
) they
use twice the fertilizer rate we use in southern Brazil. The soil there is sandy and poor, while the soil here in the South is rich in clay
(70%
) and
has a good native fertility."
So by my calculations, they use 60 lb/acre potash in the south and 120 lb/acre potash in the cerrado region. I assume that would be per crop. So if they plant two crops they may well use 200 lb/acre. Just sayin.