I been growing Pecan trees many years Been studying Problems with trees there a lot info now on web about Nickel it do good for all growers read what on web about Nickel Plus and Nickel CBM. I been using Nickel Plus over year now very good results. Its important follow label instruction to spray foliage I'm going use for 3 years start a leave sample for Nickel if find Lab can do sample. Nickel been overlooked too long in all plants studies are not complete for most crop other Pecans few others. If ever enjoyed on years nickel give one year after year that should hit in your pocket book. Only place make this product that I know about is Nipan can't find any other web so here link to what need to read about Nickel please read all info it will take some time.

http://www.nickelplus.biz/index.htm