FIELD NOTES

Field Notes

• Technique How a graft actually knits together What is happening inside the sleeve for four weeks, why nothing is visible from the bench, and where the losses really occur. 8 MIN
• Compliance What the European rose rules mean inside your propagation house The systems approach, in plain terms — what is actually being audited, what has to be recorded, and which of it lands on propagation rather than on the pack house. 11 MIN
• Specification Choosing a sleeve bore against a measured stem Why one size over slips and one size under starves the join, how to sample a batch of rootstock properly, and what tolerance actually means on a silicone sleeve. 6 MIN
• Hygiene Hypochlorite is a protocol, not a product Available chlorine against parts per million, why a drum in a hot store is weaker than the label says, the contact times that matter, and the records an auditor will ask for. 8 MIN
• Media Reading a substrate specification Particle fraction, bulk density, pH and conductivity — what each one changes at the base of the cell, and which numbers to insist on before a delivery is accepted. 7 MIN