G
Guest
asdf
Last edited:
-
As of today ICMag has his own Discord server. In this Discord server you can chat, talk with eachother, listen to music, share stories and pictures...and much more. Join now and let's grow together! Join ICMag Discord here! More details in this thread here: here.
G
Guest
I have seen this many times with my own plants with no lingering effects. It usually occurs on my young plants in cold nighttime temps. Getting some more warm air in the room at night has always helped though.
G
Guest
so i shouldnt be that worried?
Have you tested the soil ph? Directions are in my signature. I bet you added too much lime. Promix already contains some lime then you added quite a bit more. Your aiming for no higher than 6.2 in a soilless mix. (5.6-6.2)
I think the wavy leaf is mild zinc deficiency.
Obvious solution is the seedlings need fert with micros containing zinc
Other possible reasons:
>too wet
>too cold
>too much phosphorus = too much bonemeal
>too much alkaline earth metals especially magnesium; this could be too much lime with calcium and magnesium
>too much copper
>too much iron
>ph too high
>rootbound
I think the wavy leaf is mild zinc deficiency.
Obvious solution is the seedlings need fert with micros containing zinc
Other possible reasons:
>too wet
>too cold
>too much phosphorus = too much bonemeal
>too much alkaline earth metals especially magnesium; this could be too much lime with calcium and magnesium
>too much copper
>too much iron
>ph too high
>rootbound
Last edited:
G
Guest
i will check the soil PH asap.
This guy had the same problem. He was calling them twisters. http://www.icmag.com/ic/showthread.php?t=39991&highlight=twisters
G
Guest
could just be a mutant...what strain?
G
Guest
nirvana's ice... im not sure if this has anything to do with it... but i have another plant of the exact same strain in the exact same mix and has no problems...
G
Guest
i wouldnt worry just yet
G
Guest
also, this plant is growing very slowly... the one that is perfectly fine is a week younger (planted on oct 13th) and much bigger....
G
Guest
they are individuals my friend some have more vigor...dont rite it off...some turn around in flower...just wait and see..peace
'Hidden hunger' threatens many crops, researcher says
'Hidden hunger' threatens many crops, researcher says
WEST LAFAYETTE, Ind. – Acres of crops fail to reach yield potential every year, and a Purdue University plant pathologist says the reason often can be traced to the same source that robs humans of optimal performance: a poor diet.
Pathologist Don Huber says crops usually get enough phosphorus, potassium and other common minerals to grow, but often can't draw sufficient micronutrients from the soil to fend off diseases. Such nutrients include the metals manganese, copper, zinc, iron and boron.
Symptoms aren't always apparent. Scientists call the phenomenon "hidden hunger."
"Plant nutrition has a big effect on the plant's susceptibility to disease," Huber says. "Micronutrients regulate a plant's physiology. Not much micronutrient is needed to mobilize a plant's disease resistance, but it is critical."
Soil composition is frequently overlooked in crop production, Huber says. Farmers and agronomists typically pay more attention to controlling insects and alien vegetation, or to weather forecasts. Huber suggests soil nutrition plays an equally important role in plant development.
In studies at four Purdue agricultural research farms and at agronomy centers in Alberta, Canada, Huber and Canadian researchers found that micronutrient deficiencies have both a direct and indirect impact on crops.
"Manganese, from a disease standpoint, plays a critical role," Huber says. "It's not only directly involved in plant photosynthesis but also in defense to disease." Soybeans, wheat, oats and barley are especially vulnerable to manganese shortages.
Wheat and corn also need adequate amounts of zinc, Huber says.
Corn is sensitive to imbalances of manganese and nitrogen, which work in concert within the plant. In extreme cases the imbalance can set off a chain of events resulting in the plant feeding off the nutrient reserves in its own cell walls to ensure kernel development, Huber says. The cannibalization weakens the plant, inviting disease.
"When the plant begins feeding on its own tissue, stalk rot can become severe," Huber says.
Other examples of micronutrient deficiencies, and the problems they can cause, include:
• Boron – Stunted growth and poor root development in alfalfa.
• Chlorine – Stunting, tip wilt, high amino acid levels in various crops.
• Copper – Leaf tip death, severe reactions to some herbicides, unusual crop lodging, melanosis (browning) of upper stem and heads, sterility and low test weight in wheat and barley.
• Iron – Stunting, chlorosis (yellowing) and short and highly branched roots in various legumes, field beans and fruit trees.
• Molybdenum – Stunting, chlorosis, breakdown and wilting of leaves in legumes and oats.
Farmers should not assume all diseases are connected to nutrient deficiencies, Huber says, but crop malnutrition occurs more frequently than might be believed.
"You see this hidden hunger in many soils, and symptoms don't always show up in some plants," Huber says. "You may have a plant that's a little stunted and the yield not as great, and you don't know why. Micronutrient deficiency may be the reason."
For farmers who suspect their crops are nutrient-starved, a plant sample analysis may be in order. If the analysis points to nutrient deficiency, there are several steps farmers can take to boost plant immunity: apply nutrients to the soil or crop; alter the soil's pH level, moisture and tillage; plant seed with better nutrient absorption characteristics; or grow crops during seasons when conditions are less likely to create plant stress.
Farmers also may consider checking the nitrogen levels in their fields, because there is a link between nitrogen and micronutrient nutrition in crops, Huber says.
"This year in Indiana we've lost up to 200 pounds of nitrogen per acre from some of our soils, almost all from denitrification – the movement of nitrogen from the soil back into the atmosphere," Huber says. "Where we've inhibited nitrification we've lost less than a fourth of that amount."
Huber's research indicated that when nitrification inhibitors were applied to soils to maintain adequate nitrogen and manganese levels for corn, yields rose 14 bushels per acre. Soybean yields following the corn increased as much as 22 bushels per acre from nitrification inhibitor use.
Nitrification inhibitor applications cost about $7.50 an acre for corn, Huber says.
Huber's micronutrient research will appear in the Encyclopedia of Plant Pathology (John Wiley & Sons Inc., New York, N.Y.). He cowrote a chapter, titled "Crop Deficiency Diseases," with Ieuan Evans and Elston Solberg, agronomy researchers at Alberta Agriculture, Food and Rural Development.
The encyclopedia is due out this fall.
Source: Don Huber, (765) 494-4652; [email protected]
Writer: Steve Leer, (765) 494-8415, [email protected]
Purdue News Service: (765) 494-2096; [email protected]
'Hidden hunger' threatens many crops, researcher says
'Hidden hunger' threatens many crops, researcher sayscurtisd said:
WEST LAFAYETTE, Ind. – Acres of crops fail to reach yield potential every year, and a Purdue University plant pathologist says the reason often can be traced to the same source that robs humans of optimal performance: a poor diet.
Pathologist Don Huber says crops usually get enough phosphorus, potassium and other common minerals to grow, but often can't draw sufficient micronutrients from the soil to fend off diseases. Such nutrients include the metals manganese, copper, zinc, iron and boron.
Symptoms aren't always apparent. Scientists call the phenomenon "hidden hunger."
"Plant nutrition has a big effect on the plant's susceptibility to disease," Huber says. "Micronutrients regulate a plant's physiology. Not much micronutrient is needed to mobilize a plant's disease resistance, but it is critical."
Soil composition is frequently overlooked in crop production, Huber says. Farmers and agronomists typically pay more attention to controlling insects and alien vegetation, or to weather forecasts. Huber suggests soil nutrition plays an equally important role in plant development.
In studies at four Purdue agricultural research farms and at agronomy centers in Alberta, Canada, Huber and Canadian researchers found that micronutrient deficiencies have both a direct and indirect impact on crops.
"Manganese, from a disease standpoint, plays a critical role," Huber says. "It's not only directly involved in plant photosynthesis but also in defense to disease." Soybeans, wheat, oats and barley are especially vulnerable to manganese shortages.
Wheat and corn also need adequate amounts of zinc, Huber says.
Corn is sensitive to imbalances of manganese and nitrogen, which work in concert within the plant. In extreme cases the imbalance can set off a chain of events resulting in the plant feeding off the nutrient reserves in its own cell walls to ensure kernel development, Huber says. The cannibalization weakens the plant, inviting disease.
"When the plant begins feeding on its own tissue, stalk rot can become severe," Huber says.
Other examples of micronutrient deficiencies, and the problems they can cause, include:
• Boron – Stunted growth and poor root development in alfalfa.
• Chlorine – Stunting, tip wilt, high amino acid levels in various crops.
• Copper – Leaf tip death, severe reactions to some herbicides, unusual crop lodging, melanosis (browning) of upper stem and heads, sterility and low test weight in wheat and barley.
• Iron – Stunting, chlorosis (yellowing) and short and highly branched roots in various legumes, field beans and fruit trees.
• Molybdenum – Stunting, chlorosis, breakdown and wilting of leaves in legumes and oats.
Farmers should not assume all diseases are connected to nutrient deficiencies, Huber says, but crop malnutrition occurs more frequently than might be believed.
"You see this hidden hunger in many soils, and symptoms don't always show up in some plants," Huber says. "You may have a plant that's a little stunted and the yield not as great, and you don't know why. Micronutrient deficiency may be the reason."
For farmers who suspect their crops are nutrient-starved, a plant sample analysis may be in order. If the analysis points to nutrient deficiency, there are several steps farmers can take to boost plant immunity: apply nutrients to the soil or crop; alter the soil's pH level, moisture and tillage; plant seed with better nutrient absorption characteristics; or grow crops during seasons when conditions are less likely to create plant stress.
Farmers also may consider checking the nitrogen levels in their fields, because there is a link between nitrogen and micronutrient nutrition in crops, Huber says.
"This year in Indiana we've lost up to 200 pounds of nitrogen per acre from some of our soils, almost all from denitrification – the movement of nitrogen from the soil back into the atmosphere," Huber says. "Where we've inhibited nitrification we've lost less than a fourth of that amount."
Huber's research indicated that when nitrification inhibitors were applied to soils to maintain adequate nitrogen and manganese levels for corn, yields rose 14 bushels per acre. Soybean yields following the corn increased as much as 22 bushels per acre from nitrification inhibitor use.
Nitrification inhibitor applications cost about $7.50 an acre for corn, Huber says.
Huber's micronutrient research will appear in the Encyclopedia of Plant Pathology (John Wiley & Sons Inc., New York, N.Y.). He cowrote a chapter, titled "Crop Deficiency Diseases," with Ieuan Evans and Elston Solberg, agronomy researchers at Alberta Agriculture, Food and Rural Development.
The encyclopedia is due out this fall.
Source: Don Huber, (765) 494-4652; [email protected]
Writer: Steve Leer, (765) 494-8415, [email protected]
Purdue News Service: (765) 494-2096; [email protected]
G
Guest
curtisd said:
I was just sharing my similar experience. This could very well be a deficiency or environmental problem. The warmer air just seems to fix the problem for me. What are the temps at night?
G
Guest
the runoff's ph was 7.3 sproutco...
my cab is in the garage and we havent turned the heater on out there yet, but we will be turning it on in the next few weeks probably... im not exactly sure of the temperature inside the cab though...
my cab is in the garage and we havent turned the heater on out there yet, but we will be turning it on in the next few weeks probably... im not exactly sure of the temperature inside the cab though...
Acidify your water to ph 5.8. I suggest sulfuric or battery acid. See my signature below "how to make your own ph up and down".
If runoff ph is still high after 7-10 days of acidifying your water, you may consider adding pure sulfur to the pot. (not a sulfate)
Add .75 pounds elemental sulfur per cubic yard. This would be 341 grams. 180 teaspoons per pound. 1/27 x 135 tsp = 5 teaspoons per cubic foot or 2/3 teaspoon per gallon of soil mix.
If runoff ph is still high after 7-10 days of acidifying your water, you may consider adding pure sulfur to the pot. (not a sulfate)
Add .75 pounds elemental sulfur per cubic yard. This would be 341 grams. 180 teaspoons per pound. 1/27 x 135 tsp = 5 teaspoons per cubic foot or 2/3 teaspoon per gallon of soil mix.
G
Guest
soil at 5.8?thread starter dont worry about your plant
sproutco said:
G
Guest
what should the run off of my ph be?
i thought you meant water with a solution that was 5.8
i thought you meant water with a solution that was 5.8
unicorn said:
OP's got 2 Tbsp's dolo going on in that medium. A 5.8 nute solution won't stay 5.8 for long in that medium. Maybe the rhizospheres pH will be 6.3 since his runoff now is 7.3.
