TEOSINTE (Eulaena mexicana Schrad.)

I. Application and Amplification of General Seed Certification Standards

The General Seed Certification Standards are basic and, together with the following specific standards constitute the standards for certification of teosinte seed. 

II. Land requirements

Land to be used for seed production of  teosinte shall be free of volunteer plants. 

III. Field Inspection

A minimum of  three  inspections shall be made, the first before flowering, second during peak flowering and the third at maturity and prior to harvesting.

IV. Field Standards

A. General requirements

1. Isolation

    Teosinte seed fields shall be isolated from the contaminants shown in the column 1 of the Table below by the distances specified in columns 2 and 3 of the said Table:

        Contaminants                                                                                   Minimum distance (meters)

                                                                                                                Foundation        Certified

            1                                                                                                         2                     3

Fields of other varieties                                                                                  200                 100

Fields of the same variety not conforming to 

varietal purity requirements for certification                                                     200                 100

B. Specific requirements

        Factor                                                                                              Maximum permitted (%)*

                                                                                                                Foundation            Certified

       Offtypes that have shed or are shedding

       pollen when 5.0% or more of  the plants 

       have receptive silks                                                                              0.10                      0.50

 *  Maximum permitted at and after flowering.

V. Seed standards

        Factor                                                                                              Standards for each class

                                                                                                                Foundation            Certified

Pure seed (minimum)                                                                                98.0%                    98.0%

Inert matter (maximum)                                                                              2.0%                     2.0%

Other crop seeds (maximum)                                                                     5/ kg                     10 / kg

Total weed seeds (maximum)                                                                    None                     None

Germination  (minimum)                                                                             80%                      80%

Moisture (maximum)                                                                                 12.0%                   12.0%

For vapour-proof containers (maximum)                                                    8.0%                      8.0%