A Farmer Started Irrigating a Soil Some 10 Years Ago

question 14

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

Grasp the concept of oxidative phosphorylation and its importance in energy production.

Identify the end products of glycolysis.

Understand redox reactions and the role of electron carriers in cellular metabolism.

Distinguish between catabolic and anabolic metabolic pathways and their regulation.