What is the consequence of severe nematode infestation in crops?

Severe nematode infestation in crops leads to significant crop stunting and damage. Nematodes are microscopic roundworms that can affect plant roots, leading to symptoms such as poor root development, reduced nutrient uptake, and overall compromised plant health. As these pests invade and feed on plant tissues, they can cause galls or lesions on the roots, which further diminishes the plant's ability to absorb water and nutrients.

The damage from nematodes not only impacts the immediate health of the plants but can also lead to long-term effects on crop yield and quality. Crops affected by nematodes often exhibit reduced growth, less vigor, and ultimately lower yields. Therefore, managing nematode populations is crucial for maintaining the overall health and productivity of agricultural systems. The other options, such as increased yield, improved soil fertility, and higher nutritional value, would not accurately reflect the negative impact that severe nematode infestations have on crops.