Simulating seeding rate depends on seed weight and viability. This is needed by both farmer and extension staff in Jordan. Where can i find a database for crops, hybrids, viability %, and 1000 seeds weight ?
This thesis on basil intercropping might be useful for you. It does show that basil does not affect tomato yield or quality negatively and gives benefits to tomato in relation to disease and insect control under West Virginia experimental conditions.