grow weak plant

[xdrix]

Hello in my sow this year i have a weak plant.
The plant is a squash.Normaly a maxima but last year i have see a character of pepo and maxima in this plant ( twin male flower)
Last year i have haverest only one seed in the fruit of the last plant.
The seed have been little. She has germinate but she has developped a little cotyledon ans she make a very little leaf.TheI first leaf is yellow.
How can i help this plant. i like this variety?
And,you are you have an experience with a weak plant?

URL=https://www.casimages.com/i/200414044413774012.jpg.html]

[xdrix]

actually she is under my light 4000 kelvin and 1050 lumen during 14 h 30 per day. And she look like to take a vigor.

[xdrix]

I will repot my plant.

[xdrix]

When i have depote my plant i have discovered a little white toward in the ground and the root has been very little.
I have changed the ground and i have take a ground less rich and wood ash.And at background i have make a fertilizer N=4
P=3 K=5.

[xdrix]

As she have just one secondary root, I have put my plant under a little greenhouse in a room witout direct sunshine

I think that i could be on my red light for accelerated the root formation.

t° and humidity are good.

Unfortunately i have not found auxin and the squash make difficultely a root!
The second leaf after the cotyledon dries.
However she has a very little leaf and she use litle water and i think that its an advantage.
What do you think she could be survive?

[xdrix]

I have take a second greenhouse above my first greenhouse and i have 85% of humidity the afternoon with 19°C 66,2°F
And 17°C the morning 62,6°F.
In this conditions she could make a root.

[xdrix]

95% of humidity this evening

[xdrix]

Yeeeees! i have found the auxin.

[xdrix]

I have found the problem this is the seedling fly. She eat the nutricious reservs of the seedI will select a seed with the most big reserve possible!