Thursday, June 30, 2016
1012 C Street  •  Floresville, TX 78114  •  Phone: 830-216-4519  •  Fax: 830-393-3219  • 

WCN Site Search


Preview the Paper Preview the Paper

Preview this week's Paper
A limited number of pages are displayed in this preview.
Preview this Week’s Issue ›
Subscribe Today ›

Lost & Found


VideoFound: male intact dog found in middle of road on 467 near Olmos loop area. Taking to a rescue or shelter soon. Cannot keep. If yours call Crystal at 830-832-4270.
FOUND: on Wed. June 29th an iPhone on the corner of 2nd & 3rd Sts. in front of the hardware store next to a maroon suburban turned into the theater
Lost purse @ Maverick's Friday night June 24. Please return. No questions asked. Reward. 830-391-4013
More Lost & Found ads ›

Help Wanted

MOBILE CRISIS OUTREACH LEADER. Camino Real Community Services has an opening for a Mobile Crisis Outreach Caseworker to respond to mental health crisis in Wilson and Karnes Counties. Requires a Bachelor’s Degree in psychology, sociology, social, or nursing, and must have reliable transportation and liability insurance. Hours are 8 a.m.-7 p.m., Mon.-Fri., must participate in an on-call rotation from 5 p.m.-8 a.m., weekdays and 24 hours on weekends and holidays. Submit resume to Camino Real Community Services, Attn: HRS, P.O. Box 725, Lytle, TX 78052; fax 830-772-4304. Visit www.caminorealcs.org for details. EOE.
Floresville ISD is accepting applications at www.fisd.us for the position of Electrician, 260 days, 5 days per week, 8 hour workday.
More Help Wanted ads ›

Featured Videos





Video Vault ›
You’ve been granted free access to this subscribers only article.

Agriculture Today


Brown, shedding leaves are not always indication of dead tree




E-Mail this Story to a Friend
Print this Story
October 5, 2011 | 3,008 views | Post a comment

COLLEGE STATION -- “Our trees are dying!” Reports like this are coming from throughout the state, but don’t write off that shade tree or loblolly pine just yet, said a Texas AgriLife Extension Service expert in a Sept. 27 Texas AgriLife press release.

“It’s really a wait-and-see kind of a game,” said Dr. Eric Taylor, AgriLife Extension forestry specialist from Overton. “Just because a tree’s leaves have turned brown -- or that the leaves have shed from the tree -- doesn’t mean the tree is dead.”

Trees respond to moisture, stress, and heat with natural defense mechanisms, and these responses vary from species to species, Taylor said.

Southern red oaks, for example, will senesce -- draw back the nutrients from their leaves -- early in response to stress.

“It’s the pulling back of nutrients that causes the leaves to turn brown,” Taylor said. “That leaf has actually been abscised from the tree and is no longer functioning, but it doesn’t mean the tree is dead.”

Other species don’t have that defense mechanism. They will simply drop their leaves while they are still green, Taylor said.

“You see a lot of that with the trees with thicker, waxier leaves,” he said.

Some trees can’t just drop leaves. All they can do is wilt, according to Taylor.

“Now those leaves will be wilted past the point of recovery, but none of that means the tree is dead,” he said. “We’ll have to see what happens next spring. If the tree was happy and healthy and somewhat vigorous, then it will likely have enough carbohydrates and energy reserves to come back next spring.”

There are some trees that are more drought-tolerant, particularly species that have smaller leaves with a waxy covering, such as live oak.

Pines are different from hardwood trees in how they respond to drought and heat, he said. They don’t have the built-in senescent defense mechanisms of pulling back lots of nutrients from leaves.

“They have two years of needle growth, and they’ll tend to shed the oldest needles and hold onto the current needles, which is why many pines have both brown and green needles,” he said. “If those current needles begin to shed, then that’s a good indication perhaps that the tree is beyond the point of recovery.”

Taylor said newer needles are found on the tips of the branches, while the older needles will be farther inward.

Limb drop is another matter, he said. It has to do with the “water status” within the tree. When trees transpire out more water than they receive, the lignin or glue that binds cells together breaks down.

“The sudden collapse of spaces between cells will cause limbs to drop, even though they may still appear to be alive and functioning.”

Taylor said that trees in over-crowded stands are at higher risk of dying.

“You’ve got to look back at the last decade, because trees are very slow to respond. So it’s the last decade of extremely intense temperatures and drought that the trees today have to work their way through.”
 

Your Opinions and Comments


Be the first to comment on this story!


You must be logged in to post a comment.




Not a subscriber?
Subscriber, but no password?
Forgot password?

Agriculture Today Archives


Full article available to Wilson County News subscribers only. Click here to subscribe. Add some ‘glads’ to your garden (June 29, 2016)
Full article available to Wilson County News subscribers only. Click here to subscribe. County Farm Bureau: Giving back to the community, more (June 29, 2016)
Full article available to Wilson County News subscribers only. Click here to subscribe. Dr. Johnson receives Honorary FFA degree (June 29, 2016)
Full article available to Wilson County News subscribers only. Click here to subscribe. Livestock Market Reports (June 29, 2016)
Full article available to Wilson County News subscribers only. Click here to subscribe. Pleasanton cowgirl represents Texas in Tennessee (June 29, 2016)
Full article available to Wilson County News subscribers only. Click here to subscribe. TDA Market Recap (June 29, 2016)
Full article available to Wilson County News subscribers only. Click here to subscribe. Texas Hay Report (June 29, 2016)
Full article available to Wilson County News subscribers only. Click here to subscribe. U.S. Cattlemen defend beef: Say no to ‘Meatless Monday’ (June 29, 2016)
Full article available to Wilson County News subscribers only. Click here to subscribe. County committee nomination period begins (June 22, 2016)
Full article available to Wilson County News subscribers only. Click here to subscribe. Hartmann takes the steer by the horns to win state championship (June 22, 2016)
Full article available to Wilson County News subscribers only. Click here to subscribe. La Vernia FFA wraps up school year with honors, scholarships (June 22, 2016)
Full article available to Wilson County News subscribers only. Click here to subscribe. Livestock Market Reports (June 22, 2016)
Full article available to Wilson County News subscribers only. Click here to subscribe. Root rot knocks out roses (June 22, 2016)
Full article available to Wilson County News subscribers only. Click here to subscribe. TDA Market Recap (June 22, 2016)
Full article available to Wilson County News subscribers only. Click here to subscribe. Texas Hay Report (June 22, 2016)
Full article available to Wilson County News subscribers only. Click here to subscribe. A student’s ag-related journey (June 15, 2016)
Full article available to Wilson County News subscribers only. Click here to subscribe. Family Land Heritage news (June 15, 2016)
Full article available to Wilson County News subscribers only. Click here to subscribe. Five dirty truths on agriculture (June 15, 2016)
Full article available to Wilson County News subscribers only. Click here to subscribe. Horseherb galloping through yards (June 15, 2016)
Full article available to Wilson County News subscribers only. Click here to subscribe. Kristin Storey: South Texas queen to compete for national title (June 15, 2016)
Full article available to Wilson County News subscribers only. Click here to subscribe. Livestock Market Reports (June 15, 2016)
Full article available to Wilson County News subscribers only. Click here to subscribe. Miller announces assistance for farmers devastated by floods (June 15, 2016)
Full article available to Wilson County News subscribers only. Click here to subscribe. No “rain, rain, go away” as precipitation persists (June 15, 2016)
Full article available to Wilson County News subscribers only. Click here to subscribe. Schwartz takes lead as Texas state veterinarian (June 15, 2016)
Full article available to Wilson County News subscribers only. Click here to subscribe. TDA Market Recap (June 15, 2016)
Full article available to Wilson County News subscribers only. Click here to subscribe. Texas Hay Report (June 15, 2016)
Full article available to Wilson County News subscribers only. Click here to subscribe. Texas Rural Leadership Program (June 15, 2016)
Full article available to Wilson County News subscribers only. Click here to subscribe. It’s almost rodeo time in Stockdale (June 8, 2016)
Full article available to Wilson County News subscribers only. Click here to subscribe. Livestock Market Reports (June 8, 2016)
Full article available to Wilson County News subscribers only. Click here to subscribe. Save seed pods for next fall (June 8, 2016)
Full article available to Wilson County News subscribers only. Click here to subscribe. TDA Market Recap (June 8, 2016)
Full article available to Wilson County News subscribers only. Click here to subscribe. Texas Hay Report (June 8, 2016)
Full article available to Wilson County News subscribers only. Click here to subscribe. Big Time Texas Hunts entries now on sale (June 1, 2016)
Full article available to Wilson County News subscribers only. Click here to subscribe. Burbridge leads the way in Buck Taylor roping event (June 1, 2016)
Full article available to Wilson County News subscribers only. Click here to subscribe. Farm Bureau solicits AgLead, FarmLead participants (June 1, 2016)
June 2016 Gardening Calendar (June 1, 2016)
Full article available to Wilson County News subscribers only. Click here to subscribe. Livestock Market Reports (June 1, 2016)
Full article available to Wilson County News subscribers only. Click here to subscribe. Save squash from vine borers (June 1, 2016)
Full article available to Wilson County News subscribers only. Click here to subscribe. State Farm Bureau testifies on agricultural use valuation (June 1, 2016)
Full article available to Wilson County News subscribers only. Click here to subscribe. TDA Market Recap (June 1, 2016)
Full article available to Wilson County News subscribers only. Click here to subscribe. Texas Hay Report (June 1, 2016)
Coupons ag-right
Triple R DC ExpertsVoncille Bielefeld homeAllstate & McBride RealtyHeavenly Touch home

  Copyright © 2007-2016 Wilson County News. All rights reserved. Web development by Drewa Designs.