- Duringthetobaccohardeningperiodbedoftobaccoseedlingwasthefallingtargetofalateaphidsandwasthemainresourceoftobaccovirusspreadbyaphids.Asagallmatures,asmallporeopens,enablingfertileaphidstoemergeanddisperse-andpredatorstoenter.Anyofseveralsmallinsectso...
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