Root Knot Nematodes. If your tomato plants are stunted, their roots have knots (galls) and the foliage is pale yellow, they are most likely infested with root knot nematodes. The galls caused by the nematodes keep the roots from sending nutrients up to the foliage, which causes the stunting and yellowing.
The time when fall starts is between summer and winter. As with the other seasons, its commencement differs and is based on the hemisphere you are in. Commencement Dates. In astronomical terms the season begins on September 22 up to November 22 in the Northern Hemisphere.
The autumn (fall) equinox in the Northern Hemisphere is the spring equinox in the Southern Hemisphere. Fall - Autumn Activities and Games. In 2017, fall begins on March 20th (22:45 UTC) for countries in the Southern Hemisphere (parts of South America, parts of Africa, Australia, and Antarctica).