CULT:Germination and Nitrogen:(germination & heat mats)
- Subject: [iris] CULT:Germination and Nitrogen:(germination & heat mats)
- From: A*@aol.com
- Date: Thu, 5 Dec 2002 11:44:44 EST
- List-archive: <http://www.hort.net/lists/iris/> (Web Archive)
In a message dated 12/5/2002 6:34:46 AM Central Standard Time,
lmann@volfirst.net writes:
<< and maybe even nutrients (I read somewhere that nitrogen as nitrate (I
think) helps break dormancy in some/many seeds) are suitable.
>>
Linda, keep up the research! You may have supplied the answer to why my
germination rate dropped from over 80% to around 50%.
Does anyone know if germination is better in springs with heavier rain fall?
From the 'free' nitrogen? In earlier years, I sprayed my emerging seedlings
(and surrounding seed) with water containing Miracle Grow, a practice I'd
stopped due to time constraints. The decrease in germination could be the
decreased spring watering itself, but again it could be the lack of the MG
and the nitrogen?
Many of those hesitant seed have sprouted in the fall. The crop sprouting in
2001 produced almost as many in the fall as in the spring. I'd say
approximately 50% in the spring with another 30% in the fall (due to fall
rains/nitrogen?). Which adds up to my 80%. For this crop, it was very good
since I lost many of them in the late hard freeze this past spring. They
were in a frost pocket and hadn't been established long enough to form big
healthy clumps. It's a year later but I still have plants from these crosses
due to the fall emerging seedlings.
Betty Wilkerson Zone 6 SouthCentral Kentucky
American Iris Society web site <http://www.irises.org>
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