strain. Tlic qwsttion of nctunl stininitition of iasccts by low conccutrnt.ions of poison wiis 11 tlifliciilt onc. In t.11~ liiniinn ficltl, sninll cpiintitics of iirscnic iirc given ns stiniulnnt.s, \vhcrcas grciitcr quiintit.ics kill, nntl :I siniilar considcrnt.ion niight npply to insccticitlcs.
The trend of progress in crop production
β Scribed by Russell, E. J.
- Publisher
- Wiley (John Wiley & Sons)
- Year
- 1939
- Weight
- 634 KB
- Volume
- 58
- Category
- Article
- ISSN
- 0368-4075
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β¦ Synopsis
D i r e c t o r of the Rotharnsted Experimental Station (Contribution t o the Symposium on ** The Trend of Progress,'' to be held during the Annual Meeting o f the Society in Exeter, and to be presented a t a special session organized by the Food Group at Dartington H a l l , Tomes, on
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