It is generally only used during the daylight saving time for places that observe Pacific Standard Time (PST) during the non-daylight saving period. As mentioned earlier, most parts of Arizona do not observe daylight saving time, so these parts remain on MST. The Navajo Nation lands, which extend to the states of Arizona, New Mexico and Utah, observe daylight saving time from April to October.
The nature of chaff is different enough from wheat to render it worthy of fire. If you plant a little of the stem or stalk of the wheat plant, it will not grow. If you tried to sell it, you might get a few pennies, but not anything like that of the grain itself.
Leaves of plants infected with wheat streak mosaic have a bright yellow streaking. Symptoms are often most severe near the leaf tip. The virus that causes wheat streak mosaic survives in volunteer wheat and is spread by wheat curl mites. The disease is often most severe in areas of a field that are closest to these sources of the disease and mites.