Micro Nutrient recomendations

[daithi]

Can some one on here tell me where I could find how much my barley needs of a certain nutrient eg my analysis comes back showing low in mg and zn, but how much do I put on, it gets 5kg/ha of combitop, is this too little or too much. I can also buy two different Mn sprays one contains 500g/L and the other 235g/L both recommend 1L/ha. I know they don't cost a lot but I would like to know how much I should be putting on.
Thanks

 

[Cab-over Pete]

No idea, but put Fibrophos on your land for P&K which contains a list as long as your leg of trace elements. That way it gets into the soil.
The plant will then take what it needs, although I do concede it’s no good for the current crop.

 

[Spencer]

Can some one on here tell me where I could find how much my barley needs of a certain nutrient eg my analysis comes back showing low in mg and zn, but how much do I put on, it gets 5kg/ha of combitop, is this too little or too much. I can also buy two different Mn sprays one contains 500g/L and the other 235g/L both recommend 1L/ha. I know they don't cost a lot but I would like to know how much I should be putting on.
Thanks

Are you seriously deficient in Mg and Zn or moderate/slight? Your analysis should state. 5kg of combitop would be fine for moderate/slight. For seriously deficiency use 10kg, I believe this is stated on the bags from memory. Otherwise ask your agro?

 

[daithi]

Are you seriously deficient in Mg and Zn or moderate/slight? Your analysis should state. 5kg of combitop would be fine for moderate/slight. For seriously deficiency use 10kg, I believe this is stated on the bags from memory. Otherwise ask your agro?

Low in mg and boron, I don't see any recommendations on the sample result, Would 5kg/ha combitop be enough?

 

[daithi]

No idea, but put Fibrophos on your land for P&K which contains a list as long as your leg of trace elements. That way it gets into the soil.
The plant will then take what it needs, although I do concede it’s no good for the current crop.

Unfortunately I don't think Fibrophos is readily available in Ireland. I wish it was.

 

[Cab-over Pete]

Sorry, didn’t realise you were there.

 

[Gong Farmer]

Low in mg and boron, I don't see any recommendations on the sample result, Would 5kg/ha combitop be enough?

It's a surprisingly honest test in that it says more or less the crop is low in boron but don't worry about it. Just Mg and P need thinking about as far as I can see

 

[Luke Cropwalker]

Consider the type and timing of whatever K fertiliser has been used, possibly some slurry? This could have caused a luxury uptake leading to the low Mg levels.

 

[Spencer]

Low in mg and boron, I don't see any recommendations on the sample result, Would 5kg/ha combitop be enough?

I would suspect 5kg would be fine, if the actual crop isn’t showing deficiencies?