To acquire a 20 percent protein content for alfalfa hay, the plant needs to be cut:
a. after it blooms
b. just as it begins to bloom
c. during the bloom, which lasts 6 days
d. only when the new tillers are up about 6 inches
B
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Some alternatives to traditional field production systems of nursery plants include: ________, ________, and ________.
Fill in the blank(s) with the appropriate word(s).
Some commonly used coarse mineral components of propagation media include: ________, ________, ________, and ________.
Fill in the blank(s) with the appropriate word(s).
In PB EIFS, the insulation commonly used is _______.
A) expanded polystyrene. B) polyisocyanurate. C) fiberglass. D) extruded polystyrene. E) none of the above.
A continuous-time signal with a fundamental period of 2 seconds is sampled at a rate of 6 samples/second. Some selected values of the discrete-time signal that result
x[0] = 3, x[13] = 1, x[7] = ?7, x[33] = 0, x[17] = ?3 Find the following numerical values, if it is possible to do so. If it is impossible, explain why. (a) x[24] (b) x[18] (c) x[21] (d) x[103]