The system that involves tilling a narrow 8- to 12-inch band in crop residue in the fall and planting the row crop the following spring is called ____________________
Fill in the blank(s) with correct word
strip tillage
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Technician A says that some vehicle manufacturers recommend an ILSAC grade be used in the engine. Technician B says that an oil with the specified API rating and SAE viscosity rating should be used in an engine. Which technician is correct?
A. Both technicians A and B B. Technician A only C. Neither technician A nor B D. Technician B only
Technician A says to use a coarse sandpaper when cleaning bimetal engines with super-smooth cast iron block surfaces. Technician B says a sharp gasket scraper is recommended for use on machined aluminum. Who is correct?
A. Technician A B. Technician B C. Both technicians D. Neither technician
Texas bluegrass is known for its heat and ____________________ tolerance
Fill in the blank(s) with correct word
Which of the following does not describe aluminum hydroxy ions (such as Al(OH)2+) in the soil?
A) They block negative sites on some clays thereby reducing the cation exchange capacity. B) They influence the swelling of some clays by entering into the interlayer spaces. C) They are commonly applied to help reduce the soil pH for acid-loving plants. D) They are more prominent in acid than in neutral soils. E) They affect the pH of the soil solution through hydrolysis.