Sampling saltbush seed lots for testing To accurately determine the sowing rate, the seed lot sample must be representative of the seed to be sown. Adhere to following procedure. Dry and clean the raw seed ready for sowing before taking a sample for testing. Control any insect pests that are present. Use only germination test results that are no more than six month sold to calculate the sowing rate.
All seed deteriorates, the rate depending on the species, storage conditions and time.
For saltbushes, the rate of deterioration in seed quality has not been measured, but saltbush seed will usually last for four to five years in room conditions. The seed testing procedure To provide an easily used result, the laboratory germination test used is one that determines the number of normal seedlings germinating from a known weight of the seed. This test is called a 'weighed replicate test'. A separate weed check test is needed for a report on any weed seeds present. A weighed replicate test takes account of germination, fruit size and seed lot purity all in the one test.