Early harvest because mold

eek 1 Flower – Light Shift, Energy Shift: The Sundae Driver Flip Begins The light has changed. The rhythm has changed. And so begins the next phase of our journey with these two beautiful Sundae Driver phenos—F2 and F3, strong, structured, and ready for the path ahead. Light Flip: 11/13 Schedule This week marks the official light flip, we’ve moved from 18/6 to 11 hours ON, 13 hours OFF. This is more than a timer tweak, it’s an intentional signal to the plants. It tells them: “It’s time to shift your energy. It’s time to bloom.” Why 11/13 and not the classic 12/12? From past experience, this slightly reduced light period tends to: • Encourage faster onset of flowering • Mimic natural seasonal changes more closely • Push plants gently but clearly into the bloom phase • Slightly reduce internodal stretching, depending on strain It’s a subtle technique for growers who want to bring their genetics into flower with intention, not just automation. ⸻ Current Plant Stats Both Sundae Driver phenos are looking phenomenal: • F2 (Pheno #2): 7 to 8 solid nodes, well-structured branching • F3 (Pheno #3): 6 to 7 nodes, evenly spaced, healthy top growth • Height: ~40 cm each • Structure: Symmetrical, thriving, ready to stretch They’re not showing pistils yet—no visible pre-flowers, no white hairs, but that’s expected. It’s Week 1 Flower by light schedule, not by physiology. The hormonal shift has just begun. ⸻ Nutrient Shift – From Start to Top This week also marks a change in the feed program. We’re saying goodbye to Aptus Start Booster and welcoming Top Booster into the rotation. • Why the switch? Because the plants are transitioning from root-zone stimulation to pre-flower induction. • Top Booster is designed to: • Initiate floral development • Begin the phosphorus-potassium push • Provide trace elements aligned with bloom-stage signaling We’re using the same measurements as Start Booster, no shock, no surge. Just a clean hand-off, keeping the biological engine running smooth. Current Feed Includes: • Aptus Regulator • Aptus CalMag Boost • Aptus All-in-One Liquid • Aptus Top Booster (new this week) ⸻ Environmental Stats – Pushing the Edge, Managing the Heat • PPFD: 760 µmol/m²/s – Measured on the TrolMaster MBS-PAR sensor, dialed in • Temp: 31°C – Yes, a bit high, but the girls aren’t complaining • Humidity: 50% • VPD: 2.23 – High, but within tolerance while waiting for AC upgrade We’re riding the edge this week. It’s warm, it’s dry, but the plants are thriving, showing no signs of stress. Their resilience is a testament to your setup, your genetics, and your love. ⸻ Looking Ahead – What to Expect We’re now in the hormonal build-up phase. The girls are about to stretch, about to signal floral commitment. Here’s what we might see by next week: • First white pistils • Stretch kicking in • Top growth pushing harder than lower nodes • Nutrient demands subtly shifting—watch potassium and magnesium uptake What not to expect yet: • Buds • Resin • Drastic shape changes That comes soon—but not quite yet. ⸻ Closing Thoughts – A Sunday Drive Into Bloom This isn’t just a new phase, it’s a new pace. The grow has shifted gears, and you can feel it in the rhythm of the room. Light is shorter. Energy is tighter. But the intention is louder than ever. The Sundae Driver girls are leading us gently into bloom, graceful, balanced, and full of promise. Thank you for following along. Let’s keep this community connected, curious, and committed to the craft. — Your Grow Companion Dog Doctor Official 📲 Don’t forget to Subscribe and follow me on Instagram and YouTube @DogDoctorOfficial for exclusive content, real-time updates, and behind-the-scenes magic. We’ve got so much more coming, including transplanting and all the amazing techniques that go along with it. You won’t want to miss it. • GrowDiaries Journal: https://growdiaries.com/grower/dogdoctorofficial • Instagram: https://www.instagram.com/dogdoctorofficial/ • YouTube: https://www.youtube.com/@dogdoctorofficial ⸻ Explore the Gear that Powers My Grow If you’re curious about the tech I’m using, check out these links: • Genetics, gear, nutrients, and more – Zamnesia: https://www.zamnesia.com/ • Environmental control & automation – TrolMaster: https://www.trolmaster.eu/ • Advanced LED lighting – Future of Grow: https://www.futureofgrow.com/ • Root and growth nutrition – Aptus Holland: https://aptus-holland.com/ • Nutrient systems & boosters – Plagron: https://plagron.com/en/ • Soil & substrate excellence – PRO-MIX BX: https://www.pthorticulture.com/en-us/products/pro-mix-bx-mycorrhizae • Curing and storage – Grove Bags: https://grovebags.com/ ⸻ We’ve got much more coming as we move through the grow cycles. Trust me, you won’t want to miss the next steps, let’s push the boundaries of indoor horticulture together! As always, this is shared for educational purposes, aiming to spread understanding and appreciation for this plant. Let’s celebrate it responsibly and continue to learn and grow together. With true love comes happiness. Always believe in yourself, and always do things expecting nothing and with an open heart. Be a giver, and the universe will give back in ways you could never imagine. 💚 Growers love to all 💚

Tag 70 - Beginn der 11 Woche. Die Pflanze hat sich in dieser Woche gut erholt und die Blüten sehen super aus und riechen dazu noch Wahnsinn! Ich glaube den pH-Wert zu senken war die richtige Entscheidung! In dieser Woche habe ich aufgehört mit dem Dünger und habe begonnen die Pflanze zu spülen, dabei gebe ich 1,5 - 2ml/l Flawless Finish von Advanced Nutrients zum normalen Wasser hinzu. Die Pflanze wurde hier an Tag 70 bereits 4x mit Flawless Finish gegossen. Ich gehe davon aus das ich im laufe dieser Woche ernten werde.

26.12.24: I have noticed light stress on my plants. I had moved the lights further away and increased the light intensity to 70%. Unfortunately that created some issues. Namely severe palour of the leaves. To try and rectify the situation, I've dimmed the lights to about 30%, staying at the same distance, about 30 inches away. I measured the par levels, after I did this. They should a reading of anywhere between 40 and 150, at the canopy of the plants. They are all different sizes. This seems to have improved the colouring on all plants. After this evenings watering, I will monitor recovery and increase lighting intensity again slowly. I am also using the light cycle of 21/3, so the plants have many hours more light to absorb, than for example 12/12 or 18/6. I am pleased with the progress, considering all of my mistakes! 29.12.24: So I finally gave LST a shot, it's probably a bit too late, however I really want to get the most of the triploid pheno, and I went a little crazy and LST'd all plants except 2, as they're too small. I did that late last night, this afternoon I was amazed to see the plants turn their leaves back to the light source. I'm glad I overcame my fear of trying it. I'm very excited to see them adapt and progress! 😁 there are videos above with before and after of my LST process. Thanks for checking out my diary 🍃 ✌️

This strain absolutely took off! The plant I super cropped is absolutely covered in trichomes. One plant matured a little quicker and yielded 2 ounces!

She has performed very good with the lst method, nice plant, fast growth, quality flowers, it's a very good choice for everyone who's looking for a good quality strain at affordable prices. Very nice genetic, this phenotype concretely has a very sweet and floral terps. You can check the other 2 phenos of ak420 here at my page

The purple lemonade is getting some beautiful sticky fat dank buds and the gorilla cookies is flowering nicely the node spacing is super close so i will be looking at some super dence fat sticky buds the smell is amazing i cant wait to have a joint with the two strains combined in it .

7/11 Got half in of rain last night. Glad I didn't water. Ph of rain water is very acidic. Added supports to the blueberry cheese in the 50. I just used string and went diagonal and attached to the cage. Wrote a ton but it disappeared. Anyway looking at previous diaries I was wrong about senescence. It wad the life cycle of those earwigs that did that to my plants (see other diaries). This soil mix is amazing. These plants gave only gotten like two small feeds of big bloom. I showed my commercial buddy and I'll keep it between us what was said but it made me feel really good. I'm considering either expanding the cage in one direction with some lumber I already have or moving a couple outside tge cage. That way I have more room. He said he's seen plants structurally similar reach huge heights (14f) so I'm just trying to avoid future problems. I at least need to get the trellis on. I hope poor that's food enough. Did a real nice video this morning but nothing wanted to upload and it just uploaded the same one twice. I'll try again and hopfully it will go up. If not I'll put it up tomorrow. 7/12 Dad has surgery this morning. I did a quick video and took some pictures. I need to do some rearranging with the plants and cut a pallet to fit in the back. Then I can put a vertical trellis up. Haven't decided if I'll add on to the cage, remove a couple plants or just rearrange things but I'm leaning towards the later. They will need water again and I'm wondering if I should start nutrients but everything looks so good. By this time on past diaries I'd be losing all my leaves bu now. MI think it wad part ear wigs and part to many nutes. This soil mix is taking these plants through veg. I'll probably do a feeding soon but it will be organic and it will he small like a big bloom or ancient amber. Im leaning towards not using growbig this year as my plants seem to be doing great without it. We'll see. I'll keep this updated. UPDATE: Went back over and gave plants a full watering. Some were slightly drooping. I was going to add nutes but decided against it as I didn't see any deficiency. So far NO Earwigs! I comed through the plants and I did find a jpn beetle which I happily killed. I mixed up 8 gallons of water and gave it to the 11 plants so it wasn't quite a gallon a plant. I need to rearrange the plants so I have room to move around. I also need to cut another pallet and use the spaces I'm not. Trellis needs to go up. 7/13 I think I've got the watering amount down. Now just to find how often which will depend on weather. I've watered very little this year. They loved that gallon. I was going to use big bloom and kelp me/you but looking at my garden I decided not too. My buddy asked what i was addingvthings for and to wait fir what i added to do what I wanted it to do. I see no nutrient deficiencies so why add anything? I think this soil mixture will get me all tgexway through veg. I dont plan on using much in fliwer either. Definitely good genetics. I really need to cut that palley and move the 1 10gallon to the far back coener. It will open thibgs up so much better. The garden looked so beautiful this morning. Getting very aromatic. I started untangling trellis netting but had to leave. I'll update what I do. Happy growing folks UPDATE: Went back over as I had a slight intuition that I needed to check the garden. I found and killed at least 7 jpn beetles. That's what's been making holes. They tried to escape and bounced off a tarp but I got it. I went through the interiors and found two pillars. If these beetles are gonna be around I'm ordering a net. I'm also close to positive I'm going to extend my cage in the back a few feet. Things are getting unmanageable in here. My buddy said I'll be having problems soon if I don't do something. I'll document what I decide to do. 7/14 Found ONE jpn beetle in the garden this morning. I can manage those well enough. The birds help too. I check my garden multiple times a day so I manually remove many pests. However I've noticed some thrip damage on a leaf and a leafhopper damage on "A" leaf so there are "some" pests around but not enough to spray shit. A couple wasps were doing there job while I was there. Supposed to get thunder storms after three and tonight. Supposed to get over a half inch of rain tonight. I lifted the bags and decided to hold off and let mother nature take care of it as the bags weren't totally dry. Only problem I really have is space. I AM moving that 10gallon (that's the same size as some 20's) in the back. There's 27in not being used and a few feet the other way. My buddy cautioned me that I'm going to have problems since my plants are so crowded. I agree with him. I spoke with me father and we have most materials to extend my cage four feet in the back. I think that's my plan. I'll extend the structure before the stretch then I can put up the supports. We'll see how this goes. UPDATE: Went back over to check the girls as I had a feeling I ought to. When I got there I saw that a couple of the blueberry cheese were pretty light (liftng the smart pot) but the others seemed to be fine. ONE 10th planet was light like that and the purple punch in the 10 gallon was as well. Each plant thar needed it got at least a half gallon of water. I'm waiting to see if we get the thunderstorms and the half inch of rain. I watered the MASSIVE blueberry cheese in the 50 but I only gave it 1 pitcher which is like 1/4 gallon or so. Don't know why I even gave it that. Looked fine but the soil WAS pretty dry. Next year I'm giving myself way more room. I was running trying to chase these jpn beetles. This time I have the dawn and water and a measuring cup to knock them in. This ain't my first rodeo. I did notice some bright yellow streaks on a leaf edge and I'm hoping it's not septoria. I doubt it but I have an anxiety disorder and I worry. I hope I can get the cage extended sooner rather than later. It's getting hard to move in there and more importantly I can't take any more plant pathogen problems. I'm considering starting a plant doctor regimen just to be safe. 7/15 Got a bunch of rain last night. No jpn beetles in the garden and not really much damage. I did notice this (I think it's leaf hoppers) that leave those dots close together on a leaf so it appears I've got a variety of pests. I'm considering how to approach this. I mean the damage is very minimal but I don't want it to get out of hand. Another thing I need to look out for is leaf septoria or any other fungal pathogens. I believe that has been part of my problems in the past. I think that's what caused my earlier grows to drop all their leaves so quick. I think I'm being overly cautious but its very crowded in there. With my father just getting out of surgery the girls will need to wait a little bit before before I can extend the cage. I could still cut the pallet and move the 1 10gallon and that would give more room. I rearranged a LITTLE BIT so they have a little more room but I've really got to get this cage extended. UPDATE: IT Rained so hard I had to pull the car over. We hydroplanned the whole way home. After working ob my house I went to see what the damage would be like. NOT A SINGLE BREAK THAT I COULD SEE. I took a video but since the wifi here sucks I'll have to upload it tomorrow. Walking around in the cage even if I cant get it extended I think I'll be OK. It obviously will open me up to lots more issues but at the very least I can reorganize before I build on. The 10 gal purple punch would fit perfectly in the back and I have a pallet I can cut to fit it in place. Putting that one back and pulling the others forward will be much better than what I've got going on now. I'm also thinking about running an extension cord and putting fans under the canopy or at an angle to keep the wind moving. Just thinking outloud. However after that storm the girls looked as happy as I've ever seen them. All happy praying to the sun, thankful for the much needed rain. Mother nature does a pretty good job with out me messing with it. I've noticed a couple interior lowest leaves turn yellow and die like a nitrogen deficiency but everything else is fine. Also noticed a leaf that looked like a p deficiency but again, it was the VERY bottom leaf on ONE plant. Again the rest of everything looks fantastic. I'll keep an eye out for anymore nutrient deficiencies and if anyone that reads this sees some please let me know. I should've taken stills since they looked so good but I got it on video. 7/16 It POURED last night and throughout the day. TORRENTIAL rain. The branch breaking sheet rain that us outdoor growers learned to fear. My plants aren't trellised currently. I know what I need to do now. I have a pallet to put in the back corner and I'm moving the purple punch in the 10 there. And pulling others forward where there's more room. Then when I extend it (it's gotta be done this week) everything g will be in their proper place and I can just throw on a vertical trellis. I also noticed more (leafhopper) damage on a leaf. Different leaf of the same plant so I'm considering spraying something. I have a number of products but I was trying not to use them. Luckily I have these diaries so I can look back and see certain plants reactions to certain nutes or fungacide/insecticide/nutes and the doses used. I haven't been using much but if my plants will remain cramped I'm going to start the plant doctor. I'm seeing more pillar damage too but BT is super narrow so I'm thinking when I fo spray for pests I might use cap jack and be done with it. Then I can apply the BT in flower if it's necessary. I took a video but I have to wait until tomorrow to upload. I took a quick snapshot though. 7/17 Despite the torrential rain I don't have any breaks. I'm noticing more pest damage though. Another leaf on the same plant had those closely shaped round circles. I forget what pest it is but it's there. Caterpillars are there I'm sure so I may do a preclcentative spray. Just unsure what I'm going to use. I lost a COUPLE very bottom interior leaves that look like they just got used up. After this rain I think think the plants might benefit from a feeding. Probably next water after they dry out. I REALLY need that cage extended. I expressed that today and it should be done this week. I'm looking for pallets today. I have the little one that I can put in the back which will allow me to move the 10 gallon and move the other forward. That will help some but I need more room. I'll update as I go. UPDATE: GOT A SMALL PALLET AND IT FIT PERFECT IN THE BACK ROW. I MOVED THE PURPLE PUNCH IN THE 10 GALLON ONTO IT. I SHIFTED A BUNCHVIF THINGS AROUND. I ROTATED ON BLUEBERRY CHEESE 180 DEGREES SO IT WOULD FIR BETTER. CROP ROTATION IS GOOD ANYWAY. I TOOK VIDEOS AND YOU CAN NOW SEE THE ROWS MUCH BETTER. 2 WITH 3 and 1 WITH 4. IT'S SIGNIFICANTLY BETTER THAN IT WAS. I CAN GET AROUND ALL SIDES OF EVERY PLANT NOW. GRANTED THE LARGE 50 IN THE BACK IS GOING TO HAVE SOME TROUBLE BUT ILL JUST STAKE IT TO THE CAGE. IT WILL GROW TOWARDS THE SUN ANYWAY. IM SUPRISED I DIDN'T LOSE A BUNCH OF LEAVES AFTER THIS RAIN. MOVING THINGS AROUND AND LOOKING ON THE INTERIOR OF PLANTS I FOUND A COUPLE LEAVES THAT HAD BEEN USED UP. I REMOVED A COUPKE LEAVES THAT HAD DONE THEIR JOB. I'LL UPDATE AS I GO ALONG.

Growing for FastBuds420 has truly been an honor their genetics are truly Best in the world in my book strange our name beautifully mimicking the smells and appearances of their names. Pineapple express is one . They nailed the name right on the head. This plant truly smells just like a pineapple and almost looks like a pineapple once the fade starts one of the biggest autos I’ve ever grown truly thankful for the opportunity to grow this plant FastBuds420. 4 Life 🌿💨💯

High GD community, Week 3, Veg 2 Two lovely Sweet Cherry Pie by Sweet Seeds! All on track so far! 1 feeding this week. Thats it for this week boys and girls, Thanks for reading and passing by and 💚💚💚👏👏👏👍👍👍 for Marshydro leds. Quality/price top! Grow safe buds and feel free to check out my other ladies doing fine thanks! 🌈viparspectra🌈 🎟️Organic_LarF♡viparspectra 🎟️ for your discount!!!! https://www.viparspectra.com/?aff=nbemz68cxril&utm_source=affiliate 🌈Join us now🌈 🙏🌿🌿🌿🙏 Special thanks to 🏅🌿greenbuzzliquids🌿🏅 Use organic_larF for 15% discount 👏👏👏Weedseedsexpress!!!! 👏👏👏 LarfxWSE for discount at weedseedsexpress!!! 15% off!!! 👽👽👽Zamnesia!!! 👽👽👽 Add OrganicLarF as a code when buying your own MarsHydro LED light and get a nice reduction!!!👽🚀🛸

12 day dry @ 58-63RH & 60-66F in blacked out dry tent | Glass Jar Cure LOUD N STANKY, opening a jar gives you the duck face funk face Early taste test & this Bud KOs leaving you in major terp sweats! Hitting like a Sumo wrestler sitting on you tickling all over! Flower hits with overwhelming squeeze & flavor like drinking a smoothie! Breaks down chunky, greasy & has a vivivd dark purple color.

Beginning of week 4 so far so good. The girls are reacting well to there training. Vita race from plagron is a game changer. They are super green and healthy everytime I feed them you see the difference.Did some defoliation. Nothing major just removed any leaf overlapping or blocking light to lower parts of the plant.

week intel: its time for second pruning they grew up too fast and need second pruning as below : first i remove big fan leaves and only leaves then let them rest for 1 day then the second part of pruning will get done that is removing branches based on these conditions: 1-if the branch is very low and never can make it to the top , 2- if branch is in shade even after pruning fan leaves , 3- if there are too many branches at the small space then non of them will get resources so if there is no space for branch then , they must get remove. everything is perfect! stresses : pruning big fan leaves and lower branches + a little E.C stress around 1.7 once a week feeding: i feed them 3 times this week with this order : day 1 : i feed them heavy with silicate +base nutrients(calcium & micros + Bloom) about 884 ppm - 1.7 e.c to cause a little stress. day 3 : i feed them low dose of Feeding Booster + Karbo Boost around 325 ppm - 0.6 e.c to let them recover a little but not fully recover still a little stress will caused. day 5 : i feed them with low dose of Top-Max + B-52 around 213 ppm - 0.4 e.c to let them recover the stresses to get ready for another stress next week. guide of the week : no more stresses from now on till the end and from next week i'll reduce the amount of nitrogen and calcium to below half to the end.

Welcome growfessors to another episode of growfessor theatre! Week 2 begins in the 4x4 tent for these 4 ladies. The grow medium is still damp and heavy, so no feed yet this week. I will wait a few more days before feeding. Ladies look happy and healthy under the Mars-Hydro TSW2000 light. Thanks for stopping by growfessors, tune in next week for another episode 👽🌳💚

Today marks week 8 of veg! For my vision with this plant I plant on letting her recover from her defoliation within the nexts 2 weeks. Then maybe a light defoliation and making the switch to 12/12. Things have been going well for this plant, as you may know she struggled at first! But now shes adapted to the nutrients well and feeding program im feeding everyother day! Water inbetween! Im also not giving the plant a lot of water making sure I do not over water the plant! Learning over here! Ive been enjoy playing and traning the plant getting her to grow big and wide and thick!!! Its been super fun! Im so ready to kick things into bloom the next couple weeks! Much love & happy growing! Lets Go GUAVA SLUSHY

Still stretching 🙄 but I think she's almost done! I will say, she's exactly the shape I was after, and that main cola is going to be my biggest indoor cola for sure. Exciting times ahead!

SECond week ok! 👽

Seedling managing 93F 30%RH, around 20 DLI. Vpd is in the 3's. No I don't recommend. Signum Magnum. "A great sign appeared in the sky a woman clothed with the sun with the moon under her feet and on her head a crown of twelve stars. Sing ye to the Lord a new canticle: because He has done wonderful things. Glory to the Father, and to the Son, and to the Holy Spirit As it was in the beginning, and now, and ever shall be, world without end." The plant nutrient nitrogen exists in forms with both positive and negative charges. Ammonium (NH4+)(immobile in soil)(Cation) has a positive charge, while nitrate (NO3-) (highly mobile in soil)(Anion)has a negative charge. Nitrogen is unique among plant nutrients in that it can exist in both positively charged (ammonium, NH₄⁺) and negatively charged (nitrate, NO₃⁻) forms in the soil. This makes it a special nutrient. In that it is responsible for providing balance for reactionary trade offs when it comes to ph. Because ph itself in the medium will always slowly drift towards acidicity, such is nature. 80% of nitrogen should be nitrate and no more than 20% ammoniacal nitrogen. Ca, mg, and K are the big 3 cations related to soil composition, pH & base saturation. When nitrogen is in the form of ammonium, it can compete with calcium, magnesium, and potassium for absorption sites in the plant root. This competition can lead to a reduction in the uptake of these other essential nutrients. Nitrogen, particularly in its nitrate form (NO3-), can increase soil acidity, which can also affect the availability of calcium, magnesium, and potassium. The form of nitrogen applied (ammonium vs. nitrate) can influence its interactions with other nutrients. Ammonium nitrogen can have a more pronounced negative effect on the uptake of calcium, magnesium, and potassium compared to nitrate nitrogen. Common forms of ammonium nitrogen include ammonium ion (NH4+), urea, and ammonium compounds like ammonium nitrate, ammonium sulfate, and ammonium phosphate. Common forms of nitrate nitrogen include potassium nitrate (KNO3), sodium nitrate (NaNO3), calcium nitrate (Ca(NO3)2), and ammonium nitrate (NH4NO3). Phosphorus is an essential plant nutrient, and its availability in the soil is strongly linked to the presence of oxygen. Plants primarily absorb phosphorus as phosphate (PO4), and oxygen is a key component of this molecule. Furthermore, the availability of phosphorus in the soil can be impacted by factors like soil aeration and temperature, which in turn affect the oxygen supply to the roots. Phosphorus uptake in plants is most critical during the early stages of growth, particularly within the first few weeks of plant development. Young plants actively growing tissues have a high demand for phosphorus. They may absorb up to 75% of their total phosphorus requirements within the first few weeks of vegetative growth, with up to 51% of uptake happening overnight, primarily in the first few hours or early nightfall. ⑨Anaerobic root respiration, or respiration without oxygen, is detrimental to plants because it's less efficient and produces toxic byproducts, leading to reduced energy production, nutrient uptake issues, and ultimately, root damage and plant stress. ⑨Anaerobic respiration, unlike aerobic respiration, doesn't utilize oxygen as the final electron acceptor in the electron transport chain. This results in a significant drop in the amount of energy (ATP) produced, which is necessary for various plant functions, including growth, nutrient uptake, and maintenance of cellular processes. ⑨In the absence of oxygen, plants produce byproducts like ethanol and lactic acid during anaerobic fermentation. These byproducts can be toxic to the roots and inhibit their function, ⑨When oxygen is depleted in a medium, the pH tends to decrease (become more acidic) due to the production of metabolic byproducts. This is particularly relevant in biological systems where aerobic respiration relies on oxygen as the final electron acceptor. ⑨When oxygen is scarce, plants may switch to anaerobic respiration. This process produces carbon dioxide (CO2) as a byproduct. ⑨CO2 dissolves in water to form carbonic acid (H2CO3). This acid lowers the pH of the medium, making it more acidic. ⑨Anaerobic conditions can impair a plant's ability to regulate its internal pH, leading to a drop in cytoplasmic pH and potentially cellular acidosis. ⑨The change in pH can also affect the availability of certain nutrients to the plant, as pH influences the solubility of micronutrients like iron, manganese, zinc, copper, and boron. ⑨The lack of oxygen in the plant medium leads to a decrease in pH due to the production of carbon dioxide during anaerobic respiration and impaired pH regulation within the plant. In plant cells, cellular acidosis, a drop in the internal pH of the cytosol, is a significant stress response, particularly during conditions like flooding or hypoxia. This acidification can be triggered by a decrease in oxygen levels, leading to the production of metabolic byproducts like lactic acid and CO2. The plant's ability to tolerate and recover from these conditions depends on its cellular mechanisms to regulate pH and mitigate the effects of acidosis. When plants are subjected to low oxygen environments, such as those experienced during flooding, anaerobic metabolism, which produces lactic acid and ethanol, becomes the primary source of energy. This can lead to a build-up of these acidic metabolites in the cytosol, causing a drop in pH. OXYGEN Atomic oxygen (single oxygen atom, O) is the lightest form of oxygen, as it has the lowest mass of the oxygen molecules. Oxygen also exists as a diatomic molecule (O2) and an allotrope called ozone (O3), which have higher masses due to the number of oxygen atoms combined. Atomic Oxygen (O): This refers to a single oxygen atom, which is the most fundamental form of oxygen. Molecular Oxygen (O2): This is the common form of oxygen we breathe, consisting of two oxygen atoms bonded together. Ozone (O3): This is an allotrope of oxygen, meaning it's a different form of the same element, consisting of three oxygen atoms bonded together. Since atomic oxygen has the fewest oxygen atoms, it naturally has the lowest mass compared to O2 or O3. Ozone (O3) Lifespan: Ozone has a relatively long lifespan in the stratosphere, particularly at lower altitudes. For example, at 32 km in the middle latitudes during spring, ozone has a lifetime of about 2 months. Oxygen (O) Lifespan: Atomic oxygen, on the other hand, has a much shorter lifespan. At the same altitude, its lifetime is about 4/100ths of a second. Ozone-Oxygen Cycle: The ozone-oxygen cycle involves the rapid exchange between atomic oxygen (O) and ozone (O3). UV radiation can split molecular oxygen (O2) into atomic oxygen (O), which then reacts with O2 to form ozone (O3). Ozone can also be photolyzed by UV radiation, creating atomic oxygen again, which can then react with O3 to reform O2. Dominant Form: The partitioning of odd oxygen (Ox) between ozone and atomic oxygen favors ozone in the lower stratosphere. This means that a much larger proportion of odd oxygen exists as ozone than as atomic oxygen, especially in the lower stratosphere. Recombination: Atomic oxygen has a high energy and reactivity. When it encounters another oxygen atom, they can combine to form O2. This process releases energy, contributing to the heating of the atmosphere. Ozone Formation: Atomic oxygen can also react with molecular oxygen (O2) to form ozone (O3). Ozone plays a significant role in absorbing harmful UV radiation. Other Reactions: Atomic oxygen can react with various other molecules in the atmosphere, like nitrogen (N2), water (H2O), and carbon dioxide (CO2), forming different compounds. UV light below 240nm (peak 185nm) creates ozone (O₃) through a process called photolysis, where UV light breaks down dioxygen molecules (O₂) into single atomic oxygen atoms (O). These single oxygen atoms then react with other oxygen molecules to form ozone (O₃). Specifically, UV-C light with wavelengths shorter than 240 nm can cause this photolysis. UV light with wavelengths between 240-280 nm, (peak 254 nm) breaks down ozone (O₃) into dioxygen molecules (O₂) and atomic oxygen atoms (O). 280nm does not have the energy potential to break apart the stable bond of (O₂) into enough (O) to make (O₃) At ground level, atomic oxygen (single oxygen atoms) has a very short lifespan. This is because it's highly reactive and quickly combines with other molecules to form stable diatomic oxygen (O2) or other compounds. While the exact timeframe varies depending on the specific circumstances, its lifespan is typically measured in nanoseconds or picoseconds.

Week 6 looking lovely