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Lecture 18 Seeds
Terms in this set (10)
Seed Storage rule: sum of ______________________and __________should not be greater than 100.
storage temp, percent relative humidity
Certified seed can only be produced _________ years in one area. Why?
3-5, All seeds are subject to minimum purity and germination
General term for breaking physical dormancy is ________ What are 3 ways to do it?
scarification/ Animal digestion, fire, cold/hot temp cycles
Physiological dormancy is common in which types of forages?
Native grasses (bluestem ,eastern gamma, switchgrass)
What are some advantages to rapid germination?
P quicken root hair development
Slow-release N feeds new shoots and leaves
Possible to plant earlier
Number one reason for poor seedling establishment (assuming germination of unplanted seed is adequate)?
Why is it difficult to plant mixtures of different sized seeds at the same time?
Different seeds contain different coating materials, so the weight of the coating material must be considered
Seedling emergence is usually better in sands or clays
You can plant a bit deeper in sands. Why is this a possible advantage?
Seedling shove big particles aside and allow wind through by pores
Why should soil be packed firmly around seed?
Prevents drying of emerging tissues
Water to seed and seedling
Improved stand establishment
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