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Large numbers of newly flight-mature alate alienicolae of Myzus persicae (Sulz.) were flown in a flight chamber for 5 or 10 h. Flown aphids marked wit...
Read moreThe following is virtually the author's summary. Dipterous eggs laid in the soil round the bases of plants in market-garden crops of cabbage and cauli...
Read moreAnnual determinations were made of the numbers of viable weed seeds in the soil on plots of a 9-year experiment with vegetable crops in which 4 primar...
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