Plant Nutrients and Soil Fertility

Which of the following is NOT a potential source of plant nutrients?

Organic nutrient sources always have a consistently high concentration of readily available nutrients.

What is one way that plant nutrients improve soil quality?

A wide carbon to nitrogen ratio (C:N) in organic material, such as cereal straw, causes nutrients to be released ______.

Which essential nutrient is a component of chlorophyll and promotes leafy growth?

Phosphorus aids in the transfer of energy from sunlight to plants.

Name one role of nutrients in plants besides improving soil quality and crop yield.

Match the nutrient with its role in the plant:

According to the provided information, which of the following nitrogen (N) concentrations in plants indicates a sufficient level?

According to Arnon and Stout's criteria, an element is considered essential even if its deficiency can be substituted by another element.

Name one nutrient classified as mobile in both soil and plants according to the provided information.

According to the information provided, a zinc concentration of 15 ppm in plants would be considered ______.

Match the nutrient with its mobility in soil:

According to the provided information, which of the following nutrients is considered immobile in plants?

Which of the following nutrients is considered highly mobile in the soil?

A plant can complete its life cycle even with a deficiency of an essential element, according to Arnon and Stout's criteria.

Immobile nutrients in plants can be easily translocated from older to younger tissues.

According to the provided table, which of the following elements has excessive/toxic values that start the lowest?

Name three mechanisms by which plants transport nutrients from the soil.

Deficiency symptoms of mobile nutrients in plants are typically observed on ______ leaves.

Match the following nutrients with their mobility in the soil:

Which of these nutrients is considered mobile within plants?

Nutrients in the soil are always readily available to plants, regardless of their mobility.

Name two less mobile or intermediate nutrients.

Which of the following factors decreases the diffusion rate of nutrients in the soil?

All fertile soils are productive.

What term describes the energy-driven process where carriers and ion channels transport nutrients across the plasmalemma and tonoplast of root cells?

The pathways through soil are not direct, which increases the ______ of nutrient movement.

Match the ion interaction with its effect:

According to the 'Viets effect', which ion enhances the uptake of K, Rb, Br, Cl, sulphates and phosphates?

Soil fertility and soil productivity are the same thing.

What does soil reaction indicate?

What is the optimal pH range for most plant nutrients?

Soils with low CEC can hold a larger amount of nutrients compared to soils with high CEC.

What is the formula for calculating pH?

Saline soils have a pH range between ___ and ___

What happens to the availability of nitrates above pH 8?

Match the following terms with their descriptions:

Name two important anions in soil.

High CEC soils tend to be lower in fertility as they cannot hold cations effectively.

What is the primary consequence of poor drainage in soils?

Cool, wet soils can increase the rate of micronutrient uptake by crops.

What agricultural practice is associated with the depletion of micronutrients due to increased cropping intensity?

Soil texture affects how well nutrients and water are retained in the soil; _____ soils hold nutrients better than sandy soils.

Match the following factors with their impacts on micronutrient availability:

Which of the following is a consequence of large-scale deforestation on soil health?

Sandy soils are less likely to be low in micronutrients than clay soils.

What is an example of a disease that can occur due to zinc deficiency in rice?