Hi my tomatoes are drying out and loosing the leaves. Any ideas what it could be ?
by Curious-Ad5063
2 Comments
speppers69
Your plants have edema. Look at your leaves. Those blister-like bumps? That is edema. Your plants are absorbing more water than they can expel out. Very common in plants in a greenhouse. High humidity environments. You NEED better air circulation. Use a water meter before watering if you can’t tell when your plants need water.
Your VPD is way out of whack. The plants can’t breathe. For optimal indoor tomato growth, maintain a Vapor Pressure Deficit (VPD) between 0.8-1.2 kPa for most stages, increasing to 1.2-1.5 kPa during flowering/fruiting. This encourages nutrient uptake while preventing excessive transpiration or fungal diseases. There are lots of VPD charts online.
2 Comments
Your plants have edema. Look at your leaves. Those blister-like bumps? That is edema. Your plants are absorbing more water than they can expel out. Very common in plants in a greenhouse. High humidity environments. You NEED better air circulation. Use a water meter before watering if you can’t tell when your plants need water.
https://gardening.usask.ca/articles-and-lists/articles-disorders/disorder-edema.php
https://pnwhandbooks.org/plantdisease/host-disease/greenhouse-plants-tomato-oedema
Your VPD is way out of whack. The plants can’t breathe. For optimal indoor tomato growth, maintain a Vapor Pressure Deficit (VPD) between 0.8-1.2 kPa for most stages, increasing to 1.2-1.5 kPa during flowering/fruiting. This encourages nutrient uptake while preventing excessive transpiration or fungal diseases. There are lots of VPD charts online.