bean aphid造句

• Dust containing 3 % hexaethyl tetraphosphate at a concentration of 40 pounds per acre can kill some bean aphids.
• The slate-blue aphids on nasturtiums are bean aphids, the whitish-green ones on kale are cabbage aphids, and the pale green ones on practically everything are green peach aphids.
• He arrived at Rothamsted Experimental Station, Harpenden, in 1948 as an assistant experimental officer in the entomology department to work with Dr C G Johnson on the black bean aphid.
• On a test plot of field beans ( " Vicia faba " ), plants without black bean aphids yielded an average of 56 seeds per plant, those with aphids and no ants yielded 17 seeds, and those with both ants and aphids averaged eight seeds per plant.
• Broad bean plants are highly susceptible to early summer infestations of the black bean aphid, " Aphis fabae ", and a wide variety of " Aphis spp . ", " Acyrthosiphon pisum ", and " Myzus persicae ", ( Pea aphid, Bean aphid, Cowpea aphid, Melon aphid, Peach aphid ).
• Broad bean plants are highly susceptible to early summer infestations of the black bean aphid, " Aphis fabae ", and a wide variety of " Aphis spp . ", " Acyrthosiphon pisum ", and " Myzus persicae ", ( Pea aphid, Bean aphid, Cowpea aphid, Melon aphid, Peach aphid ).