ICM Nutrient Management Plan Part 1

ICM Nutrient Management Plan Part 1


okay now that we have our p index done we
have our new management plan done we know how much manure we’re putting on
each field hopefully you’ve created a map there with the manure that’s going
to go in the fields and you’ve got a column in ear quad- or mine applebees
own 2016 manure because i do have a joint table here if it just says manure
that’s fine but you may not have your pee index in here but that’s okay so
this is where my table is just a couple thing for cleanup here I’ve got stuff in
here I really don’t want so i’m going to right click on this and turn that off I
don’t care what that is these are fields that we really need we just don’t want
to look at them it’s something that ArcGIS needs to make things run so i can
turn a lot of these off i’m not going to delete a mess i still be there i just
don’t have to look at them so that’s my first step as we’re working through
trying to clean things up turn off things that i really don’t care that i
need and that one knows came in from the joint tables will turn that off so i’m
having zone tidy my P and X in amount of manure and where that’s going on the field right
now that’s what we have for table so far so this is going to be a nutrient plan
i’m going to come up here and i’m going to go save as with this map and i’m
going to call it rather than farm map now nutrient map and say that and I in
whatever folder you have make sure he goes in the right place click save now
wait kind of cleans it up and gets things done there as you read my
instructions the first set instructions to add new column so they add new
columns I’m going to come up here and I’m just going to go to add field and it
wants me to add several of them the first one that says is ma n oops ma an
underscore remember you can’t use spaces you can’t use anything but letters
numbers and underscore so this is manure end it’s how much nitrogen I’m going to
get out of my manure I tell you to make a column short integer that basically
won’t have any decimal places in it and it’s less than 10,000 that kind of fits
what we want it’s a simplest way to go so we’ll just click ok on that again
addressed of the columns I’m going to pause this video why add the rest of
columns in there but go ahead and add the rest of columns the same way okay so
i got all my columns added in there again hopefully you’ve got the manure
already done in that first column have you’ve done it next is we’re going to
start putting in some formulas to calculate
how much nutrient actually got put on by that manure so as we look at the first
one the formulas going to be listed there and it says if you’re using liquid
manure in case of the dairy farm here that I’m working with example it is
liquid we want to take the thousands gallons of the liquid manure that’s in
that column second column there on that screen here times the analysis to that
manure but we got a divided by a thousand because the analysis is the
actual pounds per thousand gallons so I’m just going to click on the top of
here and go to the field calculator and yes I can do it outside of a session
watch so here’s my manure double-click that in and we’re going to click that
times the analysis now what’s the analysis well go back to my excel sheet
I want to know what nitrogen is in that first year and it’s at 11.2 on this one
now yours numbers may be different that’s fine you don’t have to have same
numbers as me but whatever you have available that first year is what we’re
concerned about so 11.2 is the amount of nitrogen it’s going to get per thousand
gallons that first year remember this is an thousands of gallons that’s per
thousand so we have to make sure we divide this calculation by a thousand to
get the actual pounds of nitrogen that went on that field from that application
once we click OK there you will see it’ll go ahead and calculate all your
records and you’ll see down through that count how much when you i put in in this
column that’s how much nitrogen i got same thing with the phosphorus same
thing with the potassium so now again for the phosphorus come back here and here’s our
my phosphorus analysis is in here and right at 7.2 again you might have a
different number that you’ve used that’s okay as long as user number from your
manure management plan so I’ll do the same thing with the phosphorus count
column in here and I’ll just basically do my field calculator yes manure times
not 11.2 now but we’re going to take a time seven what I say 7.2 I better
double-check that sorry about that 7.2 and we’re going to click OK and that
will let me pause this oops my mistake i forgot the ride by a thousand that’s why
i didn’t i got that error message so I / thousand that’s how much phosphorus
okay okay now I same thing but the same formula name but where do i get my k
well if i go to manure management plan we never did anything with k but if you
go to first page there’s no k in there are k 20 as we would look at it the
reason is we don’t worry about k as an environmental issue manure management
plans are there to deal with environmental issues k is not an
environmental problem they asking this fine it doesn’t cause any issues so then
i’m going to go back to my manure analysis okay and in my manure analysis
at least for the college farm we’ve got potassium here at 15.2 if you don’t have
manure analysis then if you go to the appendix that we did with the manure
management in the appendix manure management plant assignment there’s
appendix there it’ll give you an analysis for whatever type of livestock
manure you’re using it’ll give it so the in the case of K we put in 15.2 for that
formula so i’ll go ahead and fill that in and then i’ll pick up again so i’ll
pause for a minute so i did that and you got to manure k in there now next is
what are our recommendations so how much how do we know how much nutrients we
actually need for a field well we’re going to rely on iowa state again we’re
in Iowa College in Iowa University we’re going to rely on their results but this
is a pretty standard in the Midwest pamphlet they use if you go back to your
instructions and let me pull that out of the screen announcing your instructions
it refers to a p.m. 1688 if you click on that that’s going to open up Iowa State
site and you want to download you can buy it if you want but you can
download a PDF file of that and open that up and that’s going to have our
recommendations in it and this is what it looks like we’re going to go to a
later table in there so we’re just going to hit the down arrow and go through
some pages let me pause this why get and you will see several tables and you
scroll through there I scroll all the way down the table 9 table 9 is
phosphorus and potassium recommendations for corn silage that’s corn silage and
that’s primarily what we’re raising on this farm so that’s what I’m going to go
with again you got to go back now another headache go back and you figure
out what’s in each field so if you have a crop will taste which includes corn
grain in some incurrence corn silage and then some in the alfalfa then you use a
different table so I’m just going to give the example here for silage most
farms should have more than one crop so you can have a variable recommendation
here so if I’m on corn silage here what I’m
going to do is look at my soil test report here and figure out how much p or
k this field is going to need compared to that soil test report so now I need
to look at my soil test results and I’ll pause this why bring that up on the map
for you okay every range things here a little bit so we could see both the PDF
file in our table at the same time so I’m looking at this table of
recommendations for corn silage and I need to look at okay what is the p1 test
on our soil and that should be in your table if not you may have to bring it
back in again you had a soil test table that you did in Excel and joined or you
enter the data right into here but it should be there one of the things I’m
going to do is I’m going to grab this P test column and pull it over a little
ways so it’s kind of right next to my P recommendation um column and we’re going
to come over here and we’ll do nitrogen a little bit but here’s my t-test here’s
my recommendations so at a pee test of 131 I’m going to come over here in 130
fawn on a bright one is going to come into this very high rate in a very high
range i’m going to put in 0 whoops i got started editing session i believe yes
sorry about that whoops its owns all right and so I’m just going to click in
there and I’m going to put in 0 go on down to the next one its soil test is at
93 and you’re going to see on this farm that just about everything for
phosphorus is going to be zero as we go on down I don’t know if I even have a
feel that’s going to be low enough to need anything 39 it looks really on this
farm 37 about as low as i go all the phosphorus is going to be zero now on
your farms that may vary that’s fine so I’m just going to hit zero all the way
down because we really have high phosphorus on this farm the reason for
that is this is a livestock farm with a lot of manure and you put large
quantities of manure on you’re going to build up your phosphorus level to soil
because phosphorus is very stable in the soil and it’s going to stay around
forever when you put it in there so you can build it up and that’s where you did
the P index and the anti test it meant affect your p index for
really phosphorus very stable when it doesn’t wash away very easy either so
it’s not that big of environment issue so the next thing I want to look is at k
do I need any potassium so I’m going to grab my K test and drag that over ups
grab a column and move it over to my k whoops right before my K a test in come
down here and we’re going to look at the top again and then I’m going to come
down here and it’s pay area you won’t go to call it fied moist or slurry it’s a
field moist sample because we took them in put them in bags they were they
didn’t let them dry out overnight or anything and wouldn’t come down his
field and in order to put anything on I need a test between 88 and 120 and I’m
looking at all my results here and again it doesn’t look like i need any k with
the numbers that i see in this actual college farms why would be 0 in there
but just keep things interesting i’m going to put a couple numbers in here
keep mine your numbers are going to be different so don’t necessarily let’s say
we put let’s say this number was lesson on it would fit into the category of
unless they would dry for example just to give you a number so in that case i
put on 200 pounds of k there i put on 200 pounds of k there but normally that
would be a zero i just want to do that to get some numbers in here and let’s
say just to put some numbers in over here i’m going to put 50 down knows but
realistically we would put zeros and all those and go on down okay so that takes
care of our p + our K racks i put some numbers in there just to show you how to
calculations work but actually with the data i have here from 2016 from our soil
test on this college farm everything’s get that high the very high range and
that kind of protein levels you really don’t want to put anything more on
unless corn prices are really good and then you might add some because you’ll
get a little bit of yield response even at a high level but not enough to
justify the cost of the fertilizer at a very high level no you’re not going to
get any yield response to speak of so in some cases you might put some on at the
management decision again kind of depends on the price of fertilizer price
of corn or whatever you’re selling the one thing we haven’t done though is a
nitrogen recommendations and if you go back to my instructions on the class i
said for the nitrogen regulation we’re going to use iowa state’s in rate
calculation if you click on that link that’ll open up their corn rate and
calculator so what does calculator is going to do is actually going to take
any count the price just like we talked about with the phosphorus potassium so
we can do multiple price scenarios or any single price panero’s it’s been put
together by Iowa State and Purdue in University of Minnesota sell several
universities in our area that are using this thing originally designed by iowa
state but several now I’ve come on board to make to work with it so we’re going
to start here we’re just going to do a single price for this example so first
thing I’m going to do is select my state Iowa and again we’re in corn following
corn on this farm that rotation if you’ve got soy beans in your rotation it
was previous year you need to adjust that America differentiate between corn
size and regular corn select the region we’re just going to say main as we look
at that not southeast Iowa with a little bit different and let’s say we want to
use anhydrous and currently anhydrous price is there if you don’t know any
better go ahead and take the default so they’re probably pretty close what’s
going on corn price is a little high right now I’m just going to back it down
to three as a realistic price their chart size medium small large return
nitrogen displays we’ll just go ahead and look down here and this is the
information and what it’s saying from this now is the most profitable nitrogen
rate is 174 pounds per acre using what we did for corn price and the price of
the fertilizer anywhere from 1.58 1.88 is a profitable rate so if you’re trying to
push your yields a little bit for some one reason or other you might go to 1.88
if you’re really tight on money you might go to the 1.58 anywhere in that
range it’s going to make you about the same money at the 1.88 you’re going to
get more yield but you put more morning to get into that yield so it’s kind of
break even but it did bring you more corn so if you need more corn to feed
your livestock you’d probably go to the upper range so you can kind of pick
anything in between there I’m just going to go with the 174 as amount of nitrogen
that we are recommending for this farm so that takes me back to arcmap and then
in the zone nitrogen recommendation everything is corn silage if you have
any alfalfa then you would obviously not put anything in for
alfalfa I’ll just say that one was in our falfa field and I don’t have my
fields on here but that’s something you would have to be looking up I’m kind of
skipping that part so I’m gonna go down put all those numbers in for nitrogen ok
so I’ve got all my numbers in as far as the data the last thing I have to do is
actually make a recommendation and do a quick math on that I think I’m going to
stop this video and pick up with that part in the second video so we’ll stop
this one and then you can pick up with the next one after this one

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