Bright yellow stripes on a few leaves

[MaeEast]

Hi all.
I'm having a problem on my 5-6 week old outdoor very berry plant. Soil and water are fine. Been giving Terra Vega nutes and am switching this weekend to flowering nutes. Have a few small bright yellow markings on a few leaves. Anyone know what it could be? I don't see any bugs at all.
Much appreciated.

 

[MaeEast]

Hi all.
I'm having a problem on my 5-6 week old outdoor very berry plant. Soil and water are fine. Been giving Terra Vega nutes and am switching this weekend to flowering nutes. Have a few small bright yellow markings on a few leaves. Anyone know what it could be? I don't see any bugs at all.
Much appreciated.

Ps it's been super hot in my part of Canada with not much rain and lots of humidity.

 

[MaeEast]

Anyone know what's up?