Slurry report.

[hubbahubba]

Could anyone tell me how much available npk units i have? spreading this slurry with dribble bar at 2000 gallon per acre?

Is it much good? Seems pretty low in nitrogen especially? Out suckled calf slats shed.

 

[daithi]

If you are putting on 2000gal/ acre = 9m3/ acre.
N 1000×.313%=3.13 ×9 = 28.17kg N at say 50% availability = 14 kg N
P 1.43 ×9=12.87kg/ acre 100% available
K 4×9 = 36 kg/acre 100% available.

 

[e3120]

Total NPK 56, 26, 72 units/ac, same as above in different language, then the availability on top. Getting 28 units of N from slurry without plastering it on at 3000g+ isn't too bad.

 

[woodylane]

If you are putting on 2000gal/ acre = 9m3/ acre.
N 1000×.313%=3.13 ×9 = 28.17kg N at say 50% availability = 14 kg N
P 1.43 ×9=12.87kg/ acre 100% available
K 4×9 = 36 kg/acre 100% available.

The P is only 50% available and K 90% in spring when band spreading, so 6.43kg/P and 32.4kg of K

 

[hubbahubba]

The P is only 50% available and K 90% in spring when band spreading, so 6.43kg/P and 32.4kg of K

What is band spreading? Does that mean u get more p & k if spread in autumn or winter?

 

[woodylane]

What is band spreading? Does that mean u get more p & k if spread in autumn or winter?

Band spreading is what you get from a dribble bar or a trailing shoe, nutrients are more available in spring than autumn.

 

[maltingbarleyboy]

Could anyone tell me how much available npk units i have? spreading this slurry with dribble bar at 2000 gallon per acre?

Is it much good? Seems pretty low in nitrogen especially? Out suckled calf slats shed.View attachment 1025378

That’s a crap analysis. Looks like SAC. NRM much better. The ammonium N is critical to know availability on N. Cattle slurry band spread now is 40% available roughly.

Download Manner NPK online, it gives you a good estimate of available NPK from any manure application

 

[hubbahubba]

Just looking at this again. See if slurry nitrogen is 40% available just, what happens to the other 60%? Any chance it becomes available but later on?

 

[woodylane]

Just looking at this again. See if slurry nitrogen is 40% available just, what happens to the other 60%? Any chance it becomes available but later on?

Yes some of it becomes available over the following years and some stays unavailable to the plant