Woody Plant Supplemental Water Study

Woody Plant Supplemental Water Study


We’re here at the Bridger Plant Materials Center at Bridger Montana and this is our sub-irrigation tube study where we are testing the effects of sub-surface delivery of supplimental water to four different species of plants ponderosa pine, Rocky Mointain juniper, green ash and bur oak and what we found is when you have herbaceous cover like this thickspike wheatgrass cover you see here you cannot add enough water to compensate for the competition and when you don’t have herbaceous competition, when you have fallow conditions you have dramtically better results and we will see that in the next video We’re here at the Bridger Plant Materials Center in Bridger Montana at the second planting of our sub-irrigation tube study The first one was on a site where we had herbaceous competition and this site has no herbaceous competition and you can see the dramatic effect of competition on water utilization by the plants Some of these green ash are actually 15 feet tall on this site. On the herbaceous site none of the green ash or bur oak are over three feet tall So that’s a testament to the value of keeping your woody plantings as clean as you can either by using mechanical or chemical cultivation or weed barrier

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