Drip irrigation.

[tomjerry]

I have a small farm and would like to learn more about drip irrigation.There seems to be two types of pipe.One type has holes that can make a small spray and the other small holes on the edge and only drip. I see on the Web corn fields with drip and can understand how it would soak down and water the roots buy can't see how it soaks the new seeds that are planted at app. 30 centimeters apart.Also I have some questions about header pipe size. Any help would be appreciated. If you have time please pm me

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[rice555]

Hello All, tomjerry I used a 1" LDPE with this set up, I'm running

the tape in this pic., about 3/4 of a rai for corn.

Less weeds with drip vs spray tape and 2/3's less water. Spray

tape is also low pressure, .8 to 1 Bar.

rice555

[tomjerry]

Thanks for the pic

It almost exactly what I want to do.I going right now to global house for more fittings.I would like to talk to you for a few minuets if you don't mind. I don't know how to send a personal message but will post my phone number if that is the best way to talk to you.let me know.

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[tomjerry]

Hello All, tomjerry I used a 1" LDPE with this set up, I'm running

the tape in this pic., about 3/4 of a rai for corn.

Less weeds with drip vs spray tape and 2/3's less water. Spray

tape is also low pressure, .8 to 1 Bar.

rice555

I am not familiar with the term "LDPE" The drip tube I bought is about one inch wide but the hole pipe size is half inch. It has drip spacing at 10cm (about 4 inches) my runs will be 60 meters being fed from a 1 1/4 main pipe. I am going to hook it all up and see what pressure the pump runs at before investing in a regulator. What part of Thailand are you in?

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[rice555]

Hello All, tomjerry, LDPE is the black PE tubbing/pipe used for water,

Vs PVC. Their is a roll of 1" LDPE next to my drip tape in the plastic

crate in the first pic. The 2nd pic you can see the 1" LDPE I use for a

supply. I have valves on each tape as the pump I use is inadequate to

supply enough when I fertigate and I need to do the 3 rows of beans

separately from the corn. Always use a filter before the tape.

Pic. 3 is what I use to install, except for the water pump pliers and

scissors, everything is from Super Products. Make sure you pick up

some of the connectors(2 blue collars) to splice damaged tape to keep

going, not another trip to the store to get some.

I use the 1" stake to hold the LDPE in place and some 20 cm stakes to

keep the tape in place on the growing bed. I use the looped blue collar

end cap and a stake to hold the tape so it doesn't roll and keeps a little

tension to help stay in place. Heat will expand the tape and will make it

move if you don't.

I forgot to put the 10mm hand punch in the picture to punch the hole

through the LDPE for the tape fitting/valve& fitting.

Just click on my name to PM me

[tomjerry]

A lot of useful info. Could you post a PC of the filter you use so I can get a idea of size.? I had another look and figured out how to pm, thanks

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[rice555]

Hello All, tomjerry, this is the two set ups I have, the first is what I use for

the 1+ rai back yard that I've used for years till I rented the 2 rai behind the

place we rent here in Muang Korat. I t is set up to use the original PVC water

pipes to the garden/backyard.

The second system is for the 2 rai out back and goes through a hole in the

wall and is all 1"LDPE. The water comes from a well via a plunger pump to

a 2000Lt tank. From the tank, about 1M higher than the pump, is 2"HDPE

to the 1" pump.

Lines run from the pump to both setups, you can see the pump in the #2

picture, the junk is the owners.

There is another thread on drip irrigation on the second page.

You can see some of the stuff I use at www.superproducts.co.th, they have

PDF's of their catalog you can D/L.

rice555

[tomjerry]

Hi. I got your pm with your email address but I can't send to it. Does your email start with a M or r. It was hard to tell if your name is part of the email.

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[rice555]

Hello All, here's the 10mm punch and a piece of 1" LDPE

with the drip tape fitting for poly tubing installed. I'll post

some info on layflat, punches and fitting later.

rice555

[teemuj]

Looking for 16mm LDPE pipe for a small drip irrigation set up in Bangkok. Where can I find these?

[rice555]

Hello All, HomePro, KU Garden Center close to JJ and about a mile away

from KU is the main Super Products store. www.superproducts.co.th

Most everything you'll need in one store, don't forget to get a catalog.

rice555

[teemuj]

Correction - HomePro has stopped stocking LDPE pipes. Just checked and thats why asking here

[rice555]

Hello All, teemuj I'm not located in BKK and was going on past experiences.

Home Pro in the past(Korat) had kits with parts for a small garden system.

I don't know how much 16mm you need, but 100M is the smallest amount,

1 roll, I also think it comes in 200M roll.

100M roll costs about Bt.280.

My next trip to BKK next month for Hortiasia 2014, S-P will be one of my stops

as it's the only place I've found cam-loc fittings.(1" M, FM and cap)

rice555

[teemuj]

No worries. I will visit KU Garden Center and S-P as instructed. Thanks for info!

[Canada]

Global stocks all that you need for drip, spray, or sprinkler. But I don't know about global in Bkk

[rice555]

Hello All, Canada 95% of the irrigation products GH carries is from Super Products.

I didn't know there was a GH in Korat to a few months back. it's huge!

In the pic, the "A" flag is the parking lot, the long white rectangle is the store.

But GH and DoHome(Korat) both don't have all of the SP product line.

rice555

[Canada]

@ rice555

Do you have experience applying fertiliser through your drip system? This is something that we are wanting to do next, but have no experience. I want even, accurate distribution. We are going to do about 2-3 rai per application as that's all that our system will pump right now. Works out to a system capacity of about 1700 litres, including header pipe and all runs of drip tape.

Global does have in the catalogue for "drip parts" a metering valve that is adjustable. It will regulate the fertiliser application as a percentage of flow. The largest one runs about 23,800 baht. I think this is what I need. The other end of the spectrum is an 800 baht "venturi valve" that you just fit inline and stick it in a bucket of fertiliser. I fail to see how this method could be done with any accuracy or consistency.

Any tips?

[Canada]

I do all my drip irrigation shopping at GB in Udon, or Khon Kaen, recently in Chiang Mai too, but that's just a small system for home. They all stock the same parts of the same brand. For the price, there is good value actually.

[rice555]

Hello All, Canada the venture injectors work great, I've used two, 3/4" & 1", the

1" I used on 2 rai field, OP field corn(Hickory King). I think I got good even fertilizer

coverage with a simple device.

You can go with the Mix Rite(Super Products) of the Dosatron(have their local info

if anyone is looking, they were at Hortiasia2013), Dosatron is used in Hydro.

You figure out the amount of fertilizer you need, fill up your drip tapes, start the

injector and run to it's used up, keep the water going for 20 mins more to flush the

tapes out, stop the pump.

Remember, a FILTER before the tape/lines. the 3/4" was set up with village water

and well water. The 1" was well-2,000L tank.

The banana plantation is done with venture(NaanDan-Metzerplas).

rice555

[Canada]

Hello All, Canada the venture injectors work great, I've used two, 3/4" & 1", the

1" I used on 2 rai field, OP field corn(Hickory King). I think I got good even fertilizer

coverage with a simple device.

You can go with the Mix Rite(Super Products) of the Dosatron(have their local info

if anyone is looking, they were at Hortiasia2013), Dosatron is used in Hydro.

You figure out the amount of fertilizer you need, fill up your drip tapes, start the

injector and run to it's used up, keep the water going for 20 mins more to flush the

tapes out, stop the pump.

Remember, a FILTER before the tape/lines. the 3/4" was set up with village water

and well water. The 1" was well-2,000L tank.

The banana plantation is done with venture(NaanDan-Metzerplas).

rice555

Hmmm. That's kind of how I figured it would have to be done. But to ensure even distribution, I thought you'd have to dilute the fertiliser as well. My thought was to fill the system, dilute the fertiliser in the amount of the system (1700 litres) and then run water after that, as you say. Diluting the fert for the entire capacity of the system means that you don't actually need a venturi device. Just pump from the well first, then from a 2000 litre tank with fert, then switch to the well again. I think that would ensure even distribution.

Thoughts on that?

Can you buy easily dilatable NPK fert? or Urea?

Thanks

[Canada]

And yes, those are the venturi's that I am talking about. Got one, but afraid to use it.

[rice555]

Hello All, there's a good amount of water-soluble fertilizers available in 25K bags.

For something more specific, you can buy separate chems and mix your own with

or with micro nutrients, "most" of what I use in Hydro you can use for dirt fertilizers.

If you have good internet speed and can watch U-Tube, there's a shitload of How-To's

on the web, most irrigation Co's have videos.

As a safety practice, I never put anything into a water tank but water, you never know,

better safe than sorry.

If you are worried about getting the fert distributed evenly, drip will get a more even

than what you've done before. Again, it doesn't matter what brand of tape you use, all

the big Co's have How-To's choice of tape/line, filtration and maintenance.

rice555

[Canada]

Thank you.

[rice555]

Hello All, this is just WESCO's W-S fertilizers, you can alter the NPK of

any of theses to suit your needs. See pic.

If you are having a problem figuring how much W-S-Fert to an area of

land, you might try calling WESCO and talking to them, the one guy we

use for Hydro speaks good English and very knowledgeable.

rice555

[Canada]

Hello All, this is just WESCO's W-S fertilizers, you can alter the NPK of

any of theses to suit your needs. See pic.

If you are having a problem figuring how much W-S-Fert to an area of

land, you might try calling WESCO and talking to them, the one guy we

use for Hydro speaks good English and very knowledgeable.

rice555

Thanks for that.

Damn!! That looks so easy. I've got the venturi already.

What area are you farming in Rice555? And where are you buying your Wesco fertilizer?

[rice555]

Hello All, Canada I'm in Muang Korat 8 years and 6 years on the W. side of town, did

flood irrigation for corn/egg and other vegetables at the farm, close to Phi Mai, hope to

move in there the beginning of the new year.

The only way I could water/irrigate here in Muang doing most of the work without a tractor

I started using drip. Besides using less water, it also doesn't produce the weeds that

flood irrigation. Easy to add fertilizer with the drip system.

But here in Muang, I've grown eggs, chilies(Mex), papaya, corn, sunflowers and bush &

vine long beans.

The pic is one thing I was looking into for the farm, bur probable a gas pump, this has the

injector and filter, this unit is from the land of white PVC, but easy to do here.

Some local ag store in your area should have a contact for WESCO or other supplyer of

WS fertilizer, again, House Ag Mag has adds for at least 3 suppliers of WSF.

rice555

[rice555]

Hello All, here's the chart for SP's injector, you just need a pressure gauge

on each side of the injector to use these formulas.

rice555

all Greek to me, I just use amount of fert per field, fill line, start injector, 15-20Min.

after fert is finished, stop pump.

[Canada]

Thanks Rice for your help. Timing and circumstance are forcing me to fertilize in the traditional method again this year. If I don't sell the farm this year, I'll be looking to try this next year on one of our plots.

Cheers

[icetime]

Hello

Nice info on drip irrigation. I am looking to install small drip irrigation line to feed our balcony garden as we will be out for over a month.

Any suggestion on what kind of timer, line and drips to use?