A method for increasing production of hybrid seed of bee-pollinated crops,
such as alfalfa and soybean at predetermined hybridity levels. Hybrid
seed is produced using female and pollenizer plants at a selected ratio
of female plants to pollenizer plants. The female plants and the
pollenizer plants are intermingled in the hybrid seed production field.
Prediction of percentage of hybridity at various female to pollenizer
ratios allows for selection of a ratio of female plants to pollenizer
plants to provide seed at a test percentage of hybridity. The percentage
of hybridity may be increased post-harvest by employing techniques using
seed properties such as size differential, color or density to remove a
higher percentage of non-hybrid seed. The hybrid seed product is
maximized at various hybridity levels. Planting according to subrows
allows for separate harvesting of intermingled crops. Testing the hybrid
seed product provides verification of percentage of hybridity.