Diseases

Yellow Turnip Mosaic Virus

This disease gives the host a yellow green tint on the leave’s veins. Usually causes small vesicles to develop near the edge of the chloroplasts. Also, the chloroplasts may become rounded and clumped and are visible by a light microscope. The only problem that this disease causes is that the plant becomes more susceptible to frost than healthy plants. This disease in transmitted by insect vectors like the mustard beetle and occasionally grasshoppers.  Being carried by beetles it is very easily controlled by pesticides.

More information can be found by following this hyperlink YTMV.

                                                                                                                                          Root-Knot Nematodes

These diseases are caused by a number of nematodes that are in the soil. They  may cause spotty or stunted plant growth, root galls, and restricted root growth by  stealing nutrients from the vascular parenchyma cells.  Most times a heavily  infected plant’s roots will be destroyed by harvest time from the nutrient rich galls  attracting fungi and bacteria. This disease can be controlled by crop rotation to  keep the environment host free, or if the nematode population densities are  extremely high a nematicide may be required.