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Results obtained in investigations on the control of aphids in wheat in 1973 and 1974

Results obtained in investigations on the control of aphids in wheat in 1973 and 1974

Boletim Tecnico, Empresa Brasileira de Pesquisa Agropecuaria 98: 20

During field tests on the control of aphids on wheat in Brazil in 1973, grain yield after attack by Acyrthosiphon dirhodum (Wlk.) (Metopolophium dirhodum) at the time of stem elongation was 1.3 g/ear and that after attack by Sitobion avenae (F.) (Macrosiphum avenae) at the times of flowering, earing and grain filling was 0.6 g/ear, as compared with 2.2 g in undamaged plants.

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