Answer:
7. SEED TREATMENTS TO HASTEN GERMINATION
Many tree seeds have hard seed coats which are impermeable to water and air, or which prevent the emergence of seed parts. Simple treatment is required to:
Hasten seed germinationEnsure rapid and uniform seedling establishmentShorten the time of exposure of potted seeds to pests and other stresses.
Treatment may be done in several ways:
7.1 Tap water treatment
Soak seeds in tap water for 12–48 hours (depending on how hard the seed coat is) before planting.
If seeds do not absorb water, another treatment must be used (Seeds which have absorbed water will swell.)
Hot water treatment.Figure 26 Tap water treatment. 7.2 Hot water treatment
Pour hot water (boiled, and then cooled for about 5–10 minutes to 80 °C) into a container with seeds. (Use 10 parts of water to 1 part of seed.)
Let stand for 3–10 minutes or until water cools off.
If seeds have not swelled, leave to soak overnight
7.3 Mechanical
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