0 till and phos

[Guest]

What drill are you using?

Just an old morris maxim 2
Sure has been good to us

[helmsdale]

30-35lb actual with the seed for cereals depending on soil test, and 40lb with legumes, again with the seed.

[malleefarmer]

High ph soil phosphorus get tied up here

Edit my fert rates not sure if you call fert by name but i sow a blend of 60% Map 40% urea at seeding 60 to 70 kg per ha then top up if crops good of 40 to 50kg urea spread when crop has 5 leaves plus.

Thats enought for 2 to 3 t ha crop or more if rains are kind.
Ferts a expensive part of farming here.

[GDR]

we double shoot
nothing goes with seed , 3/4" away same depth , atom jet , one wing
have gone as high as 300 lbs product (total blend) with no problems, even though gerry says it doesn't work

Same here. Use stealth paired row and put all the fert down below. Canola blend about 350lbs and 330 on wheat with no issues. Moisture usually not a problem here but if it were bone dry it might be an issue.

[GDR]

Phos is slow to move and availability slow also. 35 to 40lbs here. Have put double that or more down when seeding forages then no annual application while in production because they say it can only move 1/2 per year so hard to get it to the roots broadcasting.

[HappyFarmer]

how are they applying the phos in their trials?

Is everyone satisfied with putting the phos with the seed or just an inch below and to the side?

has anyone done a test strip with deep banded phos beside seed placed, what were the results?

40 lbs actual P and 30 k with cereals with seed with 5710 on 9.8's and 3/4 inch openers last 7 years no issues.

40 lbs actual P with canola seed last 7 years same set up and have had enough. Moving it to all in MRB next year. On the wet years with good soil moisture I had no issues but the last 3 dry springs I am seeing some emergence issue. Im set up with a small 350 tank so filling is a issue when your are putting 420 lbs of product down. Right now in my farming carrier I have to make the equipment work that I have so a tank and tractor upgrade isn't in the cards. Ideally I would like to go 15 p with canola seed and 25 p down midrow. Will see how this new plan works this year.

[bobofthenorth]

Phosphate is tightly held by the soil cation exchange sites. Plant available phosphate is only about 1/10 of a percent of the total soil phosphate. When you apply soluble phosphate (fertilizer) the soil immediately goes to work trying to restore that equilibrium where only 1/10 of a percent of total soil P is actually available.

That soil chemistry means that very little of the phosphate you apply in any particular year is used in the year of application. It also means that skipping the phosphate for one or even several years may not have much impact on yield. You're applying 30 or 40# of phosphate; if your soil test is 25-45# that means your total soil P is 25000 - 45000 pounds. So skipping a 30 or 40 pound application in any given year isn't all that important, with one big caveat. Plants have trouble taking up phosphate in cold soils. That's why you seed place phosphate - to increase the concentration of soluble phosphate near to the seedling. Phosphate is important for early root development. P deficiency will show up as delayed growth which the plant may grow out of. No matter what the snake oil salesmen have told you, measuring a yield response from P is extremely difficult. Some years there simply isn't a yield response.

[farmaholic]

Is phos required throughout the entire plant growth cycle?
I thought most was needed early.

caseih, 300 lbs. per acre with Atomjets could probably be pretty toxic in the Sahara Slum of the Ghetto some years... the Swamp can probably handle that.

We should be using more.

[helmsdale]

Is phos required throughout the entire plant growth cycle?
I thought most was needed early.

caseih, 300 lbs. per acre with Atomjets could probably be pretty toxic in the Sahara Slum of the Ghetto some years... the Swamp can probably handle that.

We should be using more.

I did 315 in wheat on a 3" spread single shoot once to see what happened... N component was 100% esn. Blend ended up being 109lb N, 35lb P. In sandy soil I seen no mortality issues, but soil moisture was extreme by special area standards.

Yield was meh, protein was retarded...

[malleefarmer]

we double shoot
nothing goes with seed , 3/4" away same depth , atom jet , one wing
have gone as high as 300 lbs product (total blend) with no problems, even though gerry says it doesn't work

Sorry for ignorance 300 lbs acre hectare. I mentioned my 60 to 80 kg per ha.

Is MAP and DAP foreign fert terms to you? MonO and di ammonia phosphates