Re: CULT:Watering Twice a Day

In a message dated 8/14/2002 10:01:28 AM Central Daylight Time, 
wmoores@watervalley.net writes:


> Walter Moores
> Enid Lake, MS USA 7/8 (Wondering why sprinkling with overhead
> sprinklers causes more rot than rainfall).
> 

My experience watering irises overhead is limited. The only time I have ever 
watered them is after planting. If they have not received rain within one 
week of planting I overhead water with 1.5 to 2 inches. I water again in 2 
weeks if they again fail to get water in that period of time. Then I forget 
about further watering. I've not noticed any rot resulting from these periods 
of overhead watering.

All that being said, I have experienced bacterial crown rot overhead watering 
daylilies. Crown rot in daylilies appears to be the equivalent of soft rot in 
irises. Both having similar, if not the same, foul odor and both having 
similar, if not the same, effect on the plants. Reducing them to mush.

In daylilies crown rot most often occures naturally when the plants undergo 
long periods of moist, warm, humid conditions. It does however occure in 
another instance. When plants are stessed e.g. they have undergone an 
extended period of drought and then receive copious amounts of overhead 
watering (rain or overhead irrigation) they may contract crown rot. So 
rightly or wrongly so, I have concluded that dramatic changes in the 
enviorenment of stressed plants increases their suseptability to rot if other 
conditions are favorable for the bacteria's growth. No suprise I'm sure, but 
some daylily lines are significantly more susceptable than others.

It could be that we sometimes do not water until we feel sorry for the plants 
and we do not feel sorry for the plants until they are stressed.

Smiles with opinions not expertese on all subjects,
Bill Burleson 7a/b
Old South Iris Society


[Non-text portions of this message have been removed]


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