If the seed collector has a good planning about seed acquisition, it will reduce wastage of money and quantity of seeds. So, the quantity of seed required must be calculated well in advance. The seed collection plan must be based on the following points: 

• Number of healthy plants of acceptable size, required for planting and distribution.
• Number of seeds needed to produce the required quantity of plants.
• Seed per weight/kilogram and seed type.
• Seed treatment should be practiced in the absence of good germination test results. It can be assumed that for every four seeds sown, only one transplantable seedling will be produced.
• Calculate the weight of seeds to be sown in grams.