Can someone help ID what is wrong with this plant?

Icefisher · May 11, 2015

Hello all, am sort of desperate, I do not want to lose this plant if at all possible.

I am using Morgan county Master blend fertilizer, Calcium nitrate, and Epsom salt.

The ph of my nutrients is 6.0 with ppm of 810 and correlating EC of 1.21. I am using a 1000 watt HPS bulb for about 15 hours a day. The plant has exhibited these symptoms for some time now and every attempt I have made to improve the situation have not worked. I have changed the solution out almost every other day. I even tried soaking the plant in buffered water for a period of time to see if that would help. I do not understand what could be wrong, the plant is still putting out new growth and the root system is white and healthy looking. It even has several blossom sets on the main stem. I have attached a couple of photos. One leaf gets it and then others on the same branch get it curl and dry up. Then the whole branch dies off. I have been trimming the diseased branches hoping that the plant would mend itself. Please, does anyone know what it could be? Can it be saved?

Thanks Icefisher

KarenO · May 11, 2015

Looks like edema
KarenO

kurt · May 11, 2015

If your bulbs are that close to the plant as shown in the image they are getting burned.1000 watts will put out some heat.If you placed the bulb that close for the image only disregard what I said.See below.
https://www.sunlightsupply.com/page/...ked-questions/
How high do I need to hang my lights above my plants?
The higher the wattage the further away you want the light to be from your plants due to the amount of heat. HID lighting will be further away than a fluorescent fixture because of this. When mounting your lighting fixture take into account the type of plant and how tall the plant will grow. You want to keep the light as close as you can, but not so close to burn the plant. A simple rule is “if it is comfortable for the back of your hand, it will be a safe distance for your plants”. Doing a little research on the type of plant and where it comes from will help in determining how much (or little) light your plants like. With fast growing plants, you may need to check the hanging height on a regular basis as plants that get too close to the lamp will be severely burned.

Gardeneer · May 12, 2015

Quote:

Originally Posted by Icefisher

Hello all, am sort of desperate, I do not want to lose this plant if at all possible.

I am using Morgan county Master blend fertilizer, Calcium nitrate, and Epsom salt.

The ph of my nutrients is 6.0 with ppm of 810 and correlating EC of 1.21. I am using a 1000 watt HPS bulb for about 15 hours a day. The plant has exhibited these symptoms for some time now and every attempt I have made to improve the situation have not worked. I have changed the solution out almost every other day. I even tried soaking the plant in buffered water for a period of time to see if that would help. I do not understand what could be wrong, the plant is still putting out new growth and the root system is white and healthy looking. It even has several blossom sets on the main stem. I have attached a couple of photos. One leaf gets it and then others on the same branch get it curl and dry up. Then the whole branch dies off. I have been trimming the diseased branches hoping that the plant would mend itself. Please, does anyone know what it could be? Can it be saved?

Thanks Icefisher

Quote:

I am using a 1000 watt HPS bulb for about 15 hours a day

HMM. that sounds like too much light / heat/ lumen to me.
I have been using CFL, each tube is 34w. So running to sets of 48" tube ( total 4 tubes) the wattage is just under 140 watts.

On the symptome I also see EDEMA and also burn. blotches.

Gardeneer

KarenO · May 12, 2015

I guess I don't get growing tomatoes indoors in May? If you really want to save it, maybe harden it off and let it be outside? I understand indoor growing in the off season, but nothing beats actual sunshine on tomatoes. Maybe I just don't understand.
Edema is not a disease, it is caused by over/inconsistent watering and that is edema.
KO

RayR · May 12, 2015

High humidity around the canopy will definitely exasperate Edema by slowing down transpiration. I agree that it looks like Edema from the blisters along the veins on the bottom of the leaf.

Icefisher · May 12, 2015

I just wanted to take a moment to thank everyone who responded to my call for help regarding the sick plant. This is my first time ever growing things hydroponically so every day is a very new day when it comes to caring for these plants.

In a million years, I would not have guessed the plants were getting too much water! To me it is so counter intuitive based on the symptoms of the branches drying out! The measurements taken on my nutrient solution, told me that the plant was not being adequately fed but I could not figure out why. I have one other plant that is doing fantastic and I have not done anything different to that one. It is a different strain of plant and perhaps that explains it. Since getting your input, I have made significant changes to the level of the nutrient solution in both of my plants. Am not 100% sure,but it looks like the sick plant liked what I did, the other plant maybe too is showing better characteristics.

I have done so much reading on the net regarding this stuff my brain is in hydroponic knowledge edema!

Thanks to all for their input
Regards
Icefisher

May 11, 2015	#3
kurt Tomatovillian™ Join Date: Oct 2011 Location: Homestead,Everglades City Fl. Posts: 2,500	If your bulbs are that close to the plant as shown in the image they are getting burned.1000 watts will put out some heat.If you placed the bulb that close for the image only disregard what I said.See below. https://www.sunlightsupply.com/page/...ked-questions/ How high do I need to hang my lights above my plants? The higher the wattage the further away you want the light to be from your plants due to the amount of heat. HID lighting will be further away than a fluorescent fixture because of this. When mounting your lighting fixture take into account the type of plant and how tall the plant will grow. You want to keep the light as close as you can, but not so close to burn the plant. A simple rule is “if it is comfortable for the back of your hand, it will be a safe distance for your plants”. Doing a little research on the type of plant and where it comes from will help in determining how much (or little) light your plants like. With fast growing plants, you may need to check the hanging height on a regular basis as plants that get too close to the lamp will be severely burned. __________________ KURT

May 12, 2015	#7
Icefisher Tomatovillian™ Join Date: Mar 2015 Location: Wisconsin Posts: 28	Thank you to all!!!! I just wanted to take a moment to thank everyone who responded to my call for help regarding the sick plant. This is my first time ever growing things hydroponically so every day is a very new day when it comes to caring for these plants. In a million years, I would not have guessed the plants were getting too much water! To me it is so counter intuitive based on the symptoms of the branches drying out! The measurements taken on my nutrient solution, told me that the plant was not being adequately fed but I could not figure out why. I have one other plant that is doing fantastic and I have not done anything different to that one. It is a different strain of plant and perhaps that explains it. Since getting your input, I have made significant changes to the level of the nutrient solution in both of my plants. Am not 100% sure,but it looks like the sick plant liked what I did, the other plant maybe too is showing better characteristics. I have done so much reading on the net regarding this stuff my brain is in hydroponic knowledge edema! Thanks to all for their input Regards Icefisher

May 11, 2015	#2
KarenO Tomatovillian™ Join Date: Oct 2012 Location: Vancouver Island Posts: 5,931	Looks like edema KarenO

May 12, 2015	#6
RayR Tomatovillian™ Join Date: Jun 2010 Location: Cheektowaga, NY Posts: 2,466	High humidity around the canopy will definitely exasperate Edema by slowing down transpiration. I agree that it looks like Edema from the blisters along the veins on the bottom of the leaf.