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.
Spring starts about Mar 21 ( or Sept 21 - Southern H.) Summer, about June 21 (or Dec 21 - S.H.) Fall, about Sept 21 (or Mar 21 - S.H.) Winter about Dec. 21 (or Jun 21 - S.H.) The exact time varies slightly because the orbit is just slightly more than 4X3 months per season - 365 1/4 days all together.