How much NPK is too much?

[Phillybonker]

I think I may have perhaps over done it with the NPK's.

Grow information:

Growing outdoors in the ground, not in a pot.

Plants six weeks old.

Ingredients added:

* Blood & Bone 10 - 4 - 0.2

* Guano liquid 10 - 10 - 2

*90L of compost for each plant (contains small amount of chicken manure and blood & bone) NPK unknown by producer.

* Soil not that great so probably only trace amounts of NPK already in the soil.

I added blood & bone 8 weeks ago, this is their second scheduled feed but this time I include guano liquid. What do you guys think, am I screwed?

 

[Phytoplankton]

At this point you’ve put so much into the soil the only way to know is to put plants in it and see what happens. I followed your other post on the same subject.

 

[Phillybonker]

At this point you’ve put so much into the soil the only way to know is to put plants in it and see what happens. I followed your other post on the same subject.

I've only done it to two plants (given them 90 litres of compost each, blood & bone and guano liquid (80% seabird guano/ 20% bat guano), plus seaweed liquid. The other plants I have are in 60 litres of compost each with blood & bone, plus seaweed liquid.

I'm due to give them their weekly visit in 2 days time. I'll give an update here.

 

[SmokingWings]

* Soil not that great so probably only trace amounts of NPK already in the soil.

It is surprising just how well a plant will grow in any soil, even what we think of as a poor soil, without any amending.

I think I may have perhaps over done it with the NPK's.

I've only done it to two plants (given them 90 litres of compost each, blood & bone and guano liquid (80% seabird guano/ 20% bat guano), plus seaweed liquid. The other plants I have are in 60 litres of compost each with blood & bone, plus seaweed liquid.

It is not the N-P-K ratio, it is the amounts of the fertilizer mixtures that get put into the soil that could cause a problem.

 

[bobrown14]

In the ground... you cant overdo it. Too much soil as a buffer. Pics of plants and description of issues would be helpful.

 

[PlanetJ]

Pictures of your plants, and any non-regular-green leafs would help. If not in a container, you probably only killed your wallet a bit.

 

[Phillybonker]

In the ground... you cant overdo it. Too much soil as a buffer. Pics of plants and description of issues would be helpful.

Sweet sounds good to me

Hopefully you're right, I only did their last feed one week ago, I'll post pics if there are any issues.

 

[Phillybonker]

Pictures of your plants, and any non-regular-green leafs would help. If not in a container, you probably only killed your wallet a bit.

If the plants show any signs of being in trouble I'll definitely post pics. I don't mind killing my wallet, I do mind killing my plants by accident.

 

[Phillybonker]

Just got back from checking the plants which are doing fine....kind of.

One is booming but the other one is showing signs of stunted growth (it was growing slowly before I added all the ferts). At this point I've got no reason to believe the stunted growth is connected to over feeding. I'll get a better picture on whether the extra NPK has a negative effect or positive effect in a week or two when the ferts really kick in.