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Three successive generations of Spodoptera exempta (Wlk.) were observed on cereal crops and grasses at Salisbury Research Station, Rhodesia, during Ja...
Read moreA laboratory experiment testing survival of first instar larvae of Anoplognathus porosus (Dalm.) at high temperatures and various soil moistures is de...
Read moreSince indigenous natural enemies of Antonina graminis (Mask.) do not appear to control the pest in Israel. The hymenopterous parasite Neodusmetia sang...
Read moreFlight phenologies of the migrant aphid Rhopalosiphum padi, as indicated by suction trap catches throughout France in 1978-88, were compared using mul...
Read moreAn anholocyclic clone of Rhopalosiphum padi was reared on leaves of barley seedlings at 20°C in LD 16:8. First-instar nymphs and newly moulted, pre-re...
Read moreA study was carried out in the UK in 1982-84 of 5 passerine bird species in four plots (70 ha), two of which were sprayed at 300 g/ha with fenitrothio...
Read moreFurther observations in Britain [cf. RAE/A 60, 2745] showed that the net annual production of lime saplings (Tilia vulgaris) was 23.4 g dry matter/sap...
Read moreThe evidence for the suggestion that smoke pollution is the main selective factor determining melanic frequencies of the polymorphic Adalia bipunctata...
Read moreThe author has found that the stages in the ovarian cycle of female of Hylemya (Erioischia) brassicae (Bch.) can be numbered in a similar way to that ...
Read moreSpiders were sampled, by suction (D-vac) and direct counts of their webs, in a controlled sheep-grazing experiment on calcareous ex-arable land and in...
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