d. Planting methods.
Broadcast seedings of small amounts of seed, such as 5 to 10 kg. per hectare, require special care. The first step is to mix the seed with a large volume of a carrier substance, up to 20 volumes of carrier to 1 volume of seed. The carrier may be fine-texture plant material such as rice bran, or finely ground meal of a grain. A third choice might be screened, moist, fine-textured soil. Sand is not desirable, for it is too heavy. The seed and carrier should be well mixed just before planting; mixing the seed for each hectare separately. Broadcasting the mixture by hand calls for careful manipulation, and there should be preliminary practice using the carrier material without seed. Practice a sweeping motion, using the thumb and fingers to release small portions of a handful on the outward sweep and a small portion on the return sweep. There are small "whirlwind-type" broadcasting machines that are hand operated, and capable of adjustment to release metered amounts of seed. These inexpensive machines give reasonably uniform distribution.
The intent is to establish substantial populations of the introduced species on the initial seeding. With careful management, these initial plants will seed and spread to thicken the cover of improved species in successive years.