What mistake related to rooting powder application can contaminate the supply?
Answer
Dipping subsequent cuttings without refreshing the product.
Dipping one cutting into a container of rooting powder and then dipping another without refreshing the product introduces pathogens directly to the wound site of subsequent cuttings.

#Videos
5 Reasons Plant Cuttings Fail | How to Increase Success Rate
Related Questions
What results from using dull or dirty shears to take a cutting?What is a crucial immediate step after sterilizing cutting implements with a bleach solution?Why must a propagation cutting contain nodes?What specific risk do softwood cuttings face despite rooting easily?What critical issue arises when the rooting medium is too dense or poorly draining?What is often cited as the single greatest cause of early cutting failure?For most cuttings, where is targeted warmth necessary to encourage root production?What dangerous pathogen incubator is created by high trapped moisture at the stem base combined with cool temperatures?What mistake related to rooting powder application can contaminate the supply?If a cutting remains green but fails to produce roots after several weeks, what primary factor might be responsible?