Chemical News and Journal of Industrial Science, Tom 144,Wydanie 3743Chemical news office., 1932 |
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Strona 22
... spray should tend to level up any superiority conferred by a spreader , as the spray should cause death by way of the wounds , without spreading over the whole of the weed surfaces being necessary . ( 7 ) Arsenic pentoxide : A 5 per ...
... spray should tend to level up any superiority conferred by a spreader , as the spray should cause death by way of the wounds , without spreading over the whole of the weed surfaces being necessary . ( 7 ) Arsenic pentoxide : A 5 per ...
Strona 23
... spray . Soap would have been impossible as a wetter and spreader because of incompati- bility with the calcium ... spray was used per plot , the spraying apparatus being a 24 gallon " Four Oaks knapsack sprayer with a double medium ...
... spray . Soap would have been impossible as a wetter and spreader because of incompati- bility with the calcium ... spray was used per plot , the spraying apparatus being a 24 gallon " Four Oaks knapsack sprayer with a double medium ...
Strona 26
... spray is given ; as wild onions were pre- dominant on practically every plot , detailed figures are given for these also , particularly as the wild onion is difficultly - eradicable . The reductions are given as percentages of the ...
... spray is given ; as wild onions were pre- dominant on practically every plot , detailed figures are given for these also , particularly as the wild onion is difficultly - eradicable . The reductions are given as percentages of the ...
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