What is one possible result of irrigation? 

A)  waterlogging of the soil 
B)  low soil pH 
C)  high nutrient levels in the soil 
D)  high soil pH

Waterlogging

The saturation of soil with water, usually due to excessive rain or irrigation, which can lead to reduced oxygen availability for plants.

Irrigation

The artificial application of water to land to assist in the growing of crops and vegetation.

Soil PH

A measure of the acidity or alkalinity of soil, significantly affecting nutrient availability, microbial activity, and plant growth.