Which of the following is a symptom of soybean cyst nematode infection?

Severe stunting and discoloration of plants is a prominent symptom associated with soybean cyst nematode (SCN) infection. The nematodes infest the roots and alter the plant's ability to uptake nutrients and water effectively, leading to overall poor plant health. Infected soybeans often exhibit noticeable stunting, as the nematodes impede normal root development and function. Discoloration can manifest as yellowing in the leaves, which is a direct result of stress from the parasitic interaction.

Recognizing these symptoms is crucial for effective diagnosis and management of SCN, as timely intervention can help mitigate crop loss and improve yield. Being able to identify the specific signs of SCN infection in soybean plants allows growers to implement appropriate control measures, such as crop rotation, resistant varieties, or chemical treatments to manage the infestation and protect their crops.