Two pages from roll of secondary nutrients and trace elements
A preliminary study started by me by the application of one spoon Borax (sodium meta borate – trace element Boron) mixed with 10 litres of bio-gas slery for 7 rubber trees. Boron deficiency on acidic sandy soil is a reason for the application for a study. One of the three recovered from brown bast and getting average yield and other six trees are recovered from brown bast with out proper milk vessels.
I am thankfull to Dr. Thomas Vargees for providing Borax for my studies.
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