RICE BEAN (REDBEAN): Vigna umbellata (Thunb.) Ohwi & Ohashi; 

(syn. Phaseolus calcaratus Roxb.)

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 rice bean seed.

II. Land requirements

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

III. Field Inspection

A minimum of  two inspections shall be made, the first before flowering, the second during flowering and the second at the flowering and fruit stage.

IV. Field Standards

A. General requirements

1. Isolation

    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 of the same species                                                    50                    20

Fields of the same variety not conforming to 

varietal purity requirements for certification                                                      50                   20

B. Specific requirements

        Factor                                                                                              Maximum permitted (%)*

                                                                                                                Foundation            Certified

       Offtypes                                                                                               0.10                      0.20 

 *  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)                                                                     None                    5 / kg

Weed seeds (maximum)                                                                            5/ kg                   10 / kg

Other distinguishable varieties (maximum)                                                  10/ kg                  20 / kg      

Germination  including hard seeds (minimum)                                              70 %                    70 %

Moisture (maximum)                                                                                  9.0%                   9.0%

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