Which of the following will increase the evaporation (E) from the soil surface?
A) plastic mulch
B) the use of no-till culture
C) stubble mulch farming
D) adding straw mulch to the soil surface
E) none of the above
E
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A. monophase B. split-phase C. biphase D. synchronous
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The most economical way to plant perennials is by cuttings
Indicate whether the statement is true or false
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What causes the nitrogen and the oxygen in the air to combine and form oxides of nitrogen NOX?
A) Sunlight B) Heat above 2500°F (1370°C) C) Any spark D) Chemical reaction in the catalytic converter
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