phosphorous deficiency and cold temperatures??

RomanX · May 7, 2017

several questions:

how should I (or if) to combat / treat purple-ish stems and leaf undersides of cold treatment seedlings? I know this purpling is a characteristic sign of phosphorous deficiency and that P uptake is impaired by cold temperatures: so what can I do to remedy this? (PS more fertilizer only corrected this for 1-2 days. . . . )

When these seedlings were transplanted outside last week, they recovered almost immediately (for 2-3 days, the weather was unseasonally very warm - in the low 80's) but then came the usual chilly weather (69-70) with daily showers and thunderstorms. The tomato starts are exhibiting P deficiency again: purplish stems, droopy leaves with tips curving down. What should I do?

May 7, 2017	#1
RomanX Tomatovillian™ Join Date: Jan 2015 Location: North Carolina Posts: 119	phosphorous deficiency and cold temperatures?? several questions: how should I (or if) to combat / treat purple-ish stems and leaf undersides of cold treatment seedlings? I know this purpling is a characteristic sign of phosphorous deficiency and that P uptake is impaired by cold temperatures: so what can I do to remedy this? (PS more fertilizer only corrected this for 1-2 days. . . . ) When these seedlings were transplanted outside last week, they recovered almost immediately (for 2-3 days, the weather was unseasonally very warm - in the low 80's) but then came the usual chilly weather (69-70) with daily showers and thunderstorms. The tomato starts are exhibiting P deficiency again: purplish stems, droopy leaves with tips curving down. What should I do?