Multiple Choice
A farmer started irrigating a soil some 10 years ago but in recent years yields have declined and the soil physical condition has deteriorated.Which of the following most likely accounts for this situation?
A) high content of Ca and Mg in the irrigation water
B) failure to use conservation tillage to reduce salt accumulation at the soil surface
C) high SAR of the irrigation water
D) excessive drainage of the soil
E) high gypsum content in the soil
Correct Answer:
Verified
Correct Answer:
Verified
Q9: Removal of excess salts from the soil
Q10: The growth of plants on sodic soils
Q11: Sulfuric acid is sometimes added to irrigation
Q12: Normal alkaline soils often exhibit deficiencies of
Q13: Lack of adequate drainage in irrigation projects
Q15: If you want to reclaim a saline
Q16: Attempts to leach the excess salts from
Q17: Gypsum is the most widely used chemical
Q18: Gypsum plus irrigation reduces the pH of
Q19: If you wanted to reduce the percentage