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| On going nutrient Deficiencies http://byap.backyardmagazines.com/forum/viewtopic.php?f=3&t=23614 |
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| Author: | Stuart Chignell [ Nov 29th, '14, 16:41 ] |
| Post subject: | On going nutrient Deficiencies |
Attachment: Corn 1.jpg [ 154.31 KiB | Viewed 6613 times ] The corn is doing great and I haven't seen any signs of deficiency in the corn until this week. Attachment: corn 2.jpg [ 152.96 KiB | Viewed 6613 times ] What do you collective peoples think is missing here? Also getting a lot of this pattern which I had put down to some insect Attachment: Corn 3.jpg [ 143.62 KiB | Viewed 6613 times ] |
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| Author: | Stuart Chignell [ Nov 29th, '14, 16:46 ] |
| Post subject: | Re: On going nutrient Deficiencies |
The zucchinis have obvious problems and I've been working on that with a foliar spray from the disscussion in the kale thread. Attachment: Zuc 1.jpg [ 128.93 KiB | Viewed 6612 times ] The new growth seems to be doing better but I'm concerned that the old leaves have got worse over the last week suggesting that they need another foliar spray of Mg and K (?) shortly. Attachment: Zuc 2.jpg [ 169.96 KiB | Viewed 6612 times ] |
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| Author: | Stuart Chignell [ Nov 29th, '14, 16:51 ] |
| Post subject: | Re: On going nutrient Deficiencies |
I had put the holes in the Rhubarb and horseraddish down to slugs or something but Damage or Cookie (or someone) on another thread said that holes in leaves was a Mg problem. Attachment: Rhubarbd Mg def.jpg [ 162.34 KiB | Viewed 6613 times ] Attachment: Horse Raddish Mg.jpg [ 200.56 KiB | Viewed 6613 times ] Attachment: Horse Raddish Mg and Ca.jpg [ 158.87 KiB | Viewed 6613 times ] We will see how the next week goes. I've added MgSO4 and Lime. A whole cup full of lime did stuff all to the pH so I've got plenty of room to move (pH ~6.4). |
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| Author: | Stuart Chignell [ Nov 29th, '14, 16:54 ] |
| Post subject: | Re: On going nutrient Deficiencies |
Interestingly the constant flood bed seems to be struggling where as the FnD bed is begging to run. Attachment: Rhubarb FnD.jpg [ 198.13 KiB | Viewed 6614 times ] Attachment: Rhubarb CF.jpg [ 228.1 KiB | Viewed 6614 times ] |
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| Author: | Bcasey2703 [ Nov 30th, '14, 10:27 ] |
| Post subject: | Re: On going nutrient Deficiencies |
Big difference Stu! I have the same thing happening in my system, F&D seem to outperform CF, but not very definitive on my end as hours in sun is different, and I perhaps pick more from certain beds. |
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| Author: | Colum Black-Byron [ Nov 30th, '14, 11:00 ] |
| Post subject: | Re: On going nutrient Deficiencies |
Is your pH still really high? Could it be locking out the nutes? |
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| Author: | dasboot [ Nov 30th, '14, 13:39 ] |
| Post subject: | Re: On going nutrient Deficiencies |
I think i can see powdery mildew in a couple of the pics as well.... 
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| Author: | Stuart Chignell [ Nov 30th, '14, 17:25 ] |
| Post subject: | Re: On going nutrient Deficiencies |
Bcasey2703 wrote: Big difference Stu! I have the same thing happening in my system, F&D seem to outperform CF, but not very definitive on my end as hours in sun is different, and I perhaps pick more from certain beds. The FnD bed I got about 5kg off about 2month ago. It is so in need of another harvest but I haven't had the time to process it so I've left it to grow. The Rhubarb in the CF (F=flood both beds are CF (flow) so as not to confuse  ) hasn't been picked this year at all.
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| Author: | Stuart Chignell [ Nov 30th, '14, 17:28 ] |
| Post subject: | Re: On going nutrient Deficiencies |
Colum Black-Byron wrote: Is your pH still really high? Could it be locking out the nutes? pH has finally dropped from ~8ish to 6.5 and that is after adding bits of KOH, and lime. After the discussion in other threads I've been adding more lime and MgSO4. I think the high NO3 is what has been locking out nutrients although that doesn't explain why the CF is so far behind the FnD. |
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| Author: | Stuart Chignell [ Nov 30th, '14, 17:30 ] |
| Post subject: | Re: On going nutrient Deficiencies |
dasboot wrote: I think i can see powdery mildew in a couple of the pics as well.... That is residue from the foliar spraying. Which brings me to a question...should I do a water spray to redisolve/wash off the residue? |
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| Author: | Colum Black-Byron [ Dec 1st, '14, 05:19 ] |
| Post subject: | Re: On going nutrient Deficiencies |
Stuart Chignell wrote: Colum Black-Byron wrote: Is your pH still really high? Could it be locking out the nutes? pH has finally dropped from ~8ish to 6.5 and that is after adding bits of KOH, and lime. After the discussion in other threads I've been adding more lime and MgSO4. I think the high NO3 is what has been locking out nutrients although that doesn't explain why the CF is so far behind the FnD. I have a feeling it's the same reason as mine. Channelling, the water is taking the path of least resistance through the beds, which I'm guessing is through the irrigation pipe you have along the bottom, then the plants aren't getting fresher water, and aren't growing as fast. Just a guess though. |
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| Author: | Stuart Chignell [ Dec 1st, '14, 05:46 ] |
| Post subject: | Re: On going nutrient Deficiencies |
Maybe. In which case I'd expect that the plants at the start of the bed would be growing well but also at the end of the bed which they are not. My guess is O2 depletion. I've had an O2 sensor on order for a while but I still don't have it yet so I can't check. It makes sense that if DWC doesn't do as well without aeration as with then the same would be true with large media filled beds run CFd. How is that as an acronym for Constant flood Which would would make constant flow CFw
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| Author: | Titus [ Dec 1st, '14, 06:39 ] |
| Post subject: | Re: On going nutrient Deficiencies |
Hi i am just reading a book. So this monkey says; Yellow leaves IF OLDER LEAVES Lack of nitrogen caused by wet soil ( media) - wet soil stops nitrogen being taken into plant This would correlate with your FD versus CF observations Titus PS improve drainage or reduce watering |
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| Author: | Stuart Chignell [ Dec 1st, '14, 07:00 ] |
| Post subject: | Re: On going nutrient Deficiencies |
It could be but I don't think so Titus. The really yellow leaves I posted above are on the Zucs in the FnD bed where as the Zucs in the CF bed are not as badly affected. Also if you look at the super yellow leaf above and this shot here from two days ago Attachment: Zuc 2.jpg [ 169.96 KiB | Viewed 6510 times ] Then compare it with this one from today Attachment: Zuc Growth.jpg [ 213.96 KiB | Viewed 6510 times ] You can see that I might have got on top of things. Well at least improved them. |
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| Author: | Stuart Chignell [ Dec 1st, '14, 07:02 ] |
| Post subject: | Re: On going nutrient Deficiencies |
In that last shot the bright yellow leaf that I posted at the top of this page is now hidden behind the growth of the new leaves. You can just see it peeking out from behind the new leaves and the wooden edge of the GB. |
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