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irrigation pic

D

DeltaRed

Well-known Member
Took this one this evening
a73330.jpg
 
How much water/acre do you put on with your system? What kind of pump? My newest fields are very flat and level, flood irrigations seems like it would be way cheaper than a pivot, but we have little or none of it up here.
 
We are all gravity feed from canals,from reservoirs,filled with mountain snowmelt.You can run lots rows,depending on gate opening,and amount of water fed into pipe,head presure,etc.You are seeing 8"(most common).6",10",and 12" are also available.Gated pipe is WONDERFUL!!
 
Can you get that corn up to 150 bpa if you shoot all the water it wants during this growing season. Or are you limited in how much water you can give the crop.
 
Some guys can grow 250(not this year) in the best soils.We are 100% dependent on irrigation here.We only get less than 10 " annually here in the valley.This year we are in a major drought.We are now cut back to 70% flow,some areas are down to 40%.Tough to grow a crop...
 
How many gallons per acre do you run when it is available? I`m trying to figure how big of a well and pump I would need to run something similar.
 
Came that way!That field is acutally too flat.Tha
water just sits there and doesnt run through unless
you 'push' alot of water down each furrow-"water
mark" as they are called here.
 
Delta correct me if I am wrong. Isn't the formula for water; 10 GPM per acre in other words 40 acres = 400 GPM. gitrib
 
I dont know of any "formula",although there probably is one.Most systems here give 1 acrefoot per acre of ground at 100%.Last year we had almost 200%,this year its down to 40% in some areas.our main 'company' is holding cautiously at 70%.Couple guys down on the river with the most SENIOR rights are still pulling 100%+.Steve
 
So one acre-foot per year? I wonder how that compares to what pivots put down? Everyone up here just goes by how long it takes to put down one inch, so I guess x12, wouldn`t take long with most of the pivots. Not meaning to be a pest, but there is not much irrigation around here, we only get an average of 11" of precipitation, and I am tossing around ideas that might be cheaper than a pivot or wheel-line.
 
one acre inch requires 27154 gals. At tassel time( most important time) corn uses about .27" per day and drops off from there. Prior to that it depends upon weather but gradually increases to the peak of tasseling. With gravity excess watering occurs near the pipe and at the lower end a shortage occurs unless excess water is allowed to flow, thus efficiency is reduced.
 
In the lettuce patch in Ca they use a Lazer guided scraper to level the big fields at 1degree of drop so the water runs slowly from one side to the other.
Fun to watch the guy out there running in figure eight all over the field.
Walt
 
(quoted from post at 09:20:05 06/13/12) So one acre-foot per year? I wonder how that compares to what pivots put down? Everyone up here just goes by how long it takes to put down one inch, so I guess x12, wouldn`t take long with most of the pivots. Not meaning to be a pest, but there is not much irrigation around here, we only get an average of 11" of precipitation, and I am tossing around ideas that might be cheaper than a pivot or wheel-line.
Click to expand...
Gravity works fine but is far less efficient than a pivot. You have to waste some on the low end to soak vs. little runoff with a pivot. The best thing about a pivot is that you can put on water at the rate you desire and cover more acres quicker and do a better job. You use less water. You may be able to get a system on a cost share through a natural resource district also. I'll post a pic of my pivot on canal water that I get 18" per acre a year. If using an unregulated well you could go more id needed. Hope this helps.
 
(quoted from post at 11:23:42 06/13/12)
(quoted from post at 09:20:05 06/13/12) So one acre-foot per year? I wonder how that compares to what pivots put down? Everyone up here just goes by how long it takes to put down one inch, so I guess x12, wouldn`t take long with most of the pivots. Not meaning to be a pest, but there is not much irrigation around here, we only get an average of 11" of precipitation, and I am tossing around ideas that might be cheaper than a pivot or wheel-line.
Click to expand...
Gravity works fine but is far less efficient than a pivot. You have to waste some on the low end to soak vs. little runoff with a pivot. The best thing about a pivot is that you can put on water at the rate you desire and cover more acres quicker and do a better job. You use less water. You may be able to get a system on a cost share through a natural resource district also. I'll post a pic of my pivot on canal water that I get 18" per acre a year. If using an unregulated well you could go more id needed. Hope this helps.
Click to expand...
Yes, it does help, at this point I am trying to learn all I can about any irrigation setups. Biggest reason I am looking at gravity is the possibility of wind power pumping into a pond, water here is free and our electric and fuel costs are astronomical.
 
You might need to calculate your pond size. 1 acre foot of water is around 352,000 gallons.
So to put out 1 inch on 12 acres you'd need a fairly good sized pond (think 1 acre pond 12 inches deep is 1 acre foot)
 
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