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Using sugar-beet seedlings as phytometers, NAR, LAI and light intensity were measured at various levels in field-grown spring barley, winter wheat, sp...
Read morePitfall trapping in sugar-beet crops in East Anglia in 1970 and 1971 showed that Carabidae were much more active and abundant than other epigeic preda...
Read moreAphid clones that feed on the same plant species for many generations often develop biotypes specifically adapted to the particular host-plant. Such b...
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