because then they emerge at different times. Cleaning the holes out after all the spring bees leave their nests might mean that species still in their tubes get killed during the cleaning process. Anyway, instructions should mention an emergence box … so that you can get everyone out of the ...
Cock MJW, van Lenteren JC, Brodeur J, Barratt BIP, Bigler F, Bolckmans K, Coˆnsoli FL, Haas F, Mason PG, Parra JRP (2009) In: The use and exchange of biological control agents for food and agriculture, Report prepared for the FAO genetic resources commission by the IOBC global ...
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