A. Darrasse1, C. Bureau, R. Samson, C. E. Morris, and M. A. Jacques, Contamination of bean seeds by Xanthomonas axonopodis pv. phaseoli associated with low bacterial densities in the phyllosphere under field and greenhouse conditions EUROPEAN, JOURNAL OF PLANT PATHOLOGY, vol.119, issue.2, pp.203-215, 2007.

N. W. Schaad, Inoculum thresholds of seedborne pathogens: Bacteria, Phytopathology, vol.78, pp.872-875, 1988.

, When in swath, leave it only for a few days maximum there, for if rain comes, the seed may start to germinate. Pre-harvest sprouting is one of the major factors of inferior seed quality

, Harvest in one operation: so no quality differences occur in the lot (they will result in bags with good and bad seed, even if one tries to mix). If a combine is used, be very sure it is clean or was used for the same variety before

, Preclean when possible: separate the seeds from the inflorescence material (except with maize

, If the material is too wet, artificial drying may be necessary and should start immediately after harvest. Each day lost will result in an ever increasing decline in seed quality

, Store the seed dry in airy conditions, free from the floor

, To avoid varietal admixture, harvested products should be kept separate and not used on the same machinery without thorough cleaning

, Combat rodents and insect as best as you can

, Make sure you have intact floors without crevices and wipe or vacuum clean these regularly

C. J. Almekinders and N. P. Louwaars, Farmers' seed production -New approaches and practices, 1999.

, International Rules for Seed Testing. International Seed Testing Association, ISTA 2009