CH Plant Nutrition and Fertilization 3

Question 1

Which fertilization practice is recommended to reduce nutrient runoff into waterways in the US?

Accepted Answer

Use split applications and slow-release products

Answer

Apply fertilizer before heavy rain

Answer

Double the rate to reduce frequency

Answer

Apply only foliar sprays

Question 2

Which micronutrient deficiency causes 'little leaf' or 'rosette' symptoms in fruit trees and ornamentals?

Accepted Answer

Zinc

Answer

Boron

Answer

Manganese

Answer

Copper

Question 3

The cation exchange capacity (CEC) of a soil influences its ability to:

Accepted Answer

Retain and supply positively charged nutrients

Answer

Drain excess water

Answer

Support beneficial fungi

Answer

Control soil temperature

Question 4

Foliar fertilization is most effective for correcting deficiencies of which type of nutrients?

Accepted Answer

Immobile micronutrients such as iron and manganese

Answer

Macronutrients applied at high rates

Answer

Mobile nutrients like nitrogen

Answer

Calcium and sulfur

Question 5

Compost is valued as a soil amendment partly because it improves nutrient retention. This is mainly due to its contribution of:

Accepted Answer

Cation exchange capacity via humus

Answer

Inorganic minerals

Answer

High phosphorus content

Answer

Rapid nitrogen release

Question 6

When is the BEST time to apply granular fertilizer to established deciduous trees in the US?

Accepted Answer

Late fall after leaf drop or early spring before bud break

Answer

Mid-summer during peak heat

Answer

During drought stress

Answer

Immediately after heavy pruning