Chemical News and Journal of Industrial Science, Tom 144,Wydanie 3743Chemical news office., 1932 |
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Strona 23
... amount . cutting by hand shears of the necessary plots was done just previous to application of the spray ; the cut material was raked off . 66 99 A key to the plots , together with certain details as regards number of weeds on the ...
... amount . cutting by hand shears of the necessary plots was done just previous to application of the spray ; the cut material was raked off . 66 99 A key to the plots , together with certain details as regards number of weeds on the ...
Strona 26
... amounts , as the toxic metallic cation of any soluble inorganic weed killer ( e.g. , copper sulphate ) would be " fixed " in the soil by base exchange , and would be inoperative unless its hydroxide were soluble , and thus capable of ...
... amounts , as the toxic metallic cation of any soluble inorganic weed killer ( e.g. , copper sulphate ) would be " fixed " in the soil by base exchange , and would be inoperative unless its hydroxide were soluble , and thus capable of ...
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