Tuesday, June 26, 2012

transpiration II

although it has rained a bit this month all that has accomplished on the palmer drought indices is to bring the short-term and long-term drought projections into line as "moderate" ( as opposed to a moderate long -term and severe short term ) so the rain hasn't had much impact as evidenced by the water i'm using on my gardens...i hadn't been to campus since sunday...i skipped yesterday because it was fairly cool...but when i got to campus this evening i go a message that told me to come out more often for a while when i saw the curled leaves on the zea diploperennis ( top photo ) ...water passes through the plants and evaporates as part of the water cycle...when the plants begin to lose too much water the stomata close and the leaves begin to curl...the second photo is of the same leaves about twenty minutes or so after i began to water...like its descendant maize, teosinte takes up water quickly and the stomata open causing the leaves to flatten out to their original shape...it is going to be hot according to the forecast with no chance of rain before the end of the week ( and i will believe that when i see it )so i will be doing daily visits to the garden to keep things well watered...dry or not the jerusalem artichokes are indeed about to burst into yellow blooms almost a ,month early ( third photo ) they still aren't more than three feet tall and their rush to bloom is odd to me...especially since th e far larger plants in my yard are in no seeming hurry to do anything of the sort...no even nascent buds back there and they are pushing five feet in height...none of them are water starved so i have to think its a sunlight issue...the plants in my back yard get some shatde and the ones on campus are in full sun all day... the fourth photo is of another zea diploperennis plant and the fifith is of hopi blue maize which is growing rapidly ( as it is in my backyard as well )...there are some brussels sprouts up on campus...which is the only place i have any...lots of peas, beans, kholrabi, turnips, potatoes, sweet potatoes, sunflowers, maize, garlic, squash, wheat,beets, herbs, and jerusalem artichokes...but no brussels sprouts...hope the ones on campus are productive.

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