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Aspects Of Some Compacted Campground Ameliorating Practices, Keith Foster
Aspects Of Some Compacted Campground Ameliorating Practices, Keith Foster
Electronic Theses and Dissertations
The purpose of this study was to determine if the direct mechanical manipulation of compacted campground soils, with and without the addition of organic materials and the planting of grasses, had any long lasting effect on the amelioration of these deteriorated campsites. An attempt was also made to determine the natural recovery time for East Texas sandy loam soils using the campground closure method. Closure or partial (seasonal) closure of campsites reduced compaction to an acceptable level in three years. Roto-tilling alone was the least effective treatment. Roto-tilling and the addition of bark or chips to maintain the loose soil …
Texas Forestry Paper No. 27, J. David Lenhart, David M. Hyink
Texas Forestry Paper No. 27, J. David Lenhart, David M. Hyink
Texas Forestry Papers, No. 1-29, 1970-1976
"Number of 8.7 - foot veneer bolts in loblolly pine trees of old-field plantations in the interior west gulf coastal plain"
Texas Forestry Paper No. 28, J. J. Stransky, L. K. Halis, E. S. Nixon
Texas Forestry Paper No. 28, J. J. Stransky, L. K. Halis, E. S. Nixon
Texas Forestry Papers, No. 1-29, 1970-1976
"Plants following timber harvest: importance to songbirds"
Texas Forestry Paper No. 29, Ellis V. Hunt Jr., Edwin L. Miller
Texas Forestry Paper No. 29, Ellis V. Hunt Jr., Edwin L. Miller
Texas Forestry Papers, No. 1-29, 1970-1976
"Plant cover and soil erosion following site preparation and planting in east texas"
Effects Of Six Insecticides On Emergence Of Some Parasites And Predators From Southern Pine Beetle Infested Trees, Jack E. Coster, I. R. Ragenovich
Effects Of Six Insecticides On Emergence Of Some Parasites And Predators From Southern Pine Beetle Infested Trees, Jack E. Coster, I. R. Ragenovich
Faculty Publications
Six insecticides (lindane, phosmet, diazinon, acephate, propoxur, and carbaryl) were tested to determine effects on predators and parasites associated with southern pine beetle, Dendroctonus frontalis Zimmerman, in eastern Texas. Eleven species of parasites and predators emerged from insecticide-treated pine bolts. The most prevalent species was Coeloides pissodis followed by Medetera lJistriata, Roptrocerus xylophagorum, Corticeus glaber, and Thanasimus dulJius. In terms of emergence from treated pines, only diazinon significantly reduced the total number of associated insects. They were 65% fewer in number following diazinon treatment. The insecticides differed in their effects on the 11 associates. C. glaber, C. pissodis, M. lJistriata, …
Endoparasitic Nematodes Of Ips Bark Beetles In Eastern Texas, Jack E. Coster, William Hoffard
Endoparasitic Nematodes Of Ips Bark Beetles In Eastern Texas, Jack E. Coster, William Hoffard
Faculty Publications
East Texas Ips species contained 4 specific internal nematodes; I. avulsus (Eichhoff) were infected with Parasitylenchus avulsi Massey, I. grandicollis (Eichhoff) with Contortylenchus grandicolli (Massey) Rlihm, and I. calligraphus (Germar) with Contortylenchus elongatus (Massey) Nickle and Parasitaphelenchus sp. In all 3 bark beetles, infection peaked in July and August when 50-58% of adults from naturally attacked pine trees contained nematodes. Infection levels declined to 20-30% during January and February. Infected I. grandicollis and I. avulsus adults appeared lighter in color than noninfected adults. Nematode infection apparently delayed emergence of both sexes of I. grandicollis and females of I. avulsus. In …