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Entry Date
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Nick Name
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Location
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Sunday, May 03, 2009
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shazzy
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Joliet, IL
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Entry 26 of 227 |
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i wouldn't have thought i needed it, but the plants let me know it was time to tap into the main line misting system and put some mister heads above each set of plants. at 2 pm with all vents open and no wind on a sunny 70 degree, the temp in the greenhouses was only 84. but i didn't think about the low air humidity under 20% from the north wind. coming off a cloudy week and this being the second day of bright sunshine in a row, the plants were flagging a tad bit. nothing heavy, but with the good watering they got yesterday, it was not from lack of moisture in the soil. the flagging is cuz of the north wind with low humidity. the root system is not all that large right now and transpiration was kicking at the max. the plants picked right back up nicely after the quick mist. so i set the timer for tomorrow as it will be a little warmer with n.e. winds which means even less humidity. the 7 minute bursts 4 times a day with black tornado misters will cool the plants and get the top half inch of soil wet at the most. i do not want to water the plants, just cool them and wetten the soil surface for a nice evaporation cooling process of the warmed and drying soil in between misting intervals: every 1.5 hours from 11-3:30 with 3:30 being the last one for plenty of time to to let the surface soil moisture evaporate before i seal up the greenhouses around 7 pm and set the space heaters to 60 for overnight. this is an interesting and delicate time for trying to microclimatize very young plants with temp swings that bright sunshine can create. from here on out it will be fully vent if there is any chance for clear sunshine during the day. with no one to control my venting of my greenhouses while at work, the vents come open in 40 degree morning temps with the space running at 85 that will shut off when the sun warms the temps up, and then the misting system will be used on days that i feel the plants need it.
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