Soil Preparation and Analysis
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Subject: Best source of nitrogen
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From
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Location
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Message
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Date Posted
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Mister Leon |
Pittsburgh
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My soil report suggested to add 2.3lbs of nitrogen per 1000 sq ft. what would be the best source of nitrogen to apply now? Do i need something that is fast releasing?
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3/25/2010 6:41:57 PM
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Bohica (Tom) |
Www.extremepumpkinstore.com
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I would recommend blood meal.
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3/25/2010 7:45:49 PM
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bathabitat |
Willamette Valley, Oregon
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I'd go with Urea (46-0-0) at 5 or 6 lbs per 1000 sq ft. (cost $1.50 to $2 per 1000 sq ft)
or if you want to go with blood meal you could do that too: 20 lbs per 1000 sq ft (cost $20 to $40 per 1000 sq ft)
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3/31/2010 2:48:41 PM
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Tomato Man |
Colorado Springs, CO
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I wouldn't touch urea.....with a 20 ft. pole ! Just because it's cheap....doesn't necessarily mean that it is good.
Why do you want "fast" releasing N ? The crash on the other side of the high....will surely stress your plant, just when you want its metabolism clicking for a stable period of flowering, fruiting and maturity. Consider the blood meal, cottonseed meal and/or alfalfa meal and a heapin' helpin' of a mature compost that you have had a hand in creating. Amend your patch now....and wait for the optimal calendar date in your area. You'll have adequate N
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3/31/2010 10:40:12 PM
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PumpkinBrat |
Paradise Mountain, New York
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I always go organic with everything now. I never use any type of man made fertilizer. Urea is man made from natural gas.Blood meal is very costly. Soybean meal 48% is also 7-2-1 a great way to go organic and it's loaded with Amino Acids.
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4/1/2010 2:10:02 AM
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Frank and Tina |
South East
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bloodmeal, soybean meal, cottonseed meal, fish meal, feather meal, corn gluten meal, alfa alfa meal........google them.
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4/1/2010 8:51:00 AM
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bathabitat |
Willamette Valley, Oregon
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Urea fertilizer isn't "Organic" so if you're striving for that philosophy, urea fertilizer isn't what you want. Tomato Man, PumpkinBrat, and the Cooks give you some fine alternative organic N sources. However, there is nothing inherently harmful to soil organisms or pumpkins about a modest amount of urea during the pre-season. Actually about 1/2 of the N in manure starts out as urea: http://www.uky.edu/Ag/AnimalSciences/pubs/agr165.pdf
So if a person adds manure, they add urea or the products of urea decomposition. Just like with manure, I wouldn't add more than just a little chemical fertilizer (e.g. urea) at any one time during the season, but pre-season (now) is still fine (in the appropriate amount). Soil microbes are well equipped to deal with a moderate amount of urea. There's still time for it to equilibrate with the existing organic matter and mineral soil exchange sites, so if you’re low in N a little urea now should help raise the overall plant-availability of N in the soil early in the season.
Don't get me wrong, organic sources should work fine too assuming the soil warms up enough by planting time.
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4/1/2010 4:16:56 PM
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CliffWarren |
Pocatello (cliffwarren@yahoo.com)
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My understanding is that urea is slow release nitrogen, or at least much slower than ammonical nitrogen.
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4/6/2010 6:24:25 PM
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bathabitat |
Willamette Valley, Oregon
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Urea breaks down into ammonium and then nitrate pretty quickly (over the coarse of a few days to a couple weeks) depending on moisture/temperature. It is slower release than ammonium or nitrate, but that's not saying much. Blood meal is slower than urea, but pretty available. The plant based N sources (Alfalfa pellets, Soybean meal, etc.) are much slower (and don't give up all the N they hold, which is fine, but one should probably account for that in calculating the amount to add).
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4/11/2010 6:43:37 PM
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Total Posts: 9 |
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