Search Results

You are looking at 31 - 40 of 199 items for :

  • All content x
Clear All
Full access

M.A. Czarnota

glyphosate (as well lower rates) could be used to control a vast number of weed species ( Monsanto Co., 2003 ). ‘Parsoni’ juniper appeared to be the most sensitive to the increase in glyphosate concentrations ( Fig. 1 ). With conifers, it is still unclear

Free access

Manuela Baietto and A. Dan Wilson

occurred on sapwoods of angiosperm species (hardwoods) than on conifer species (gymnosperms) during the first and to a lesser extent in the second year of decay. Treatment effects on mean percent dry weight loss of wood blocks (the measure of decay) were

Full access

N.J. Gooch, Pascal Nzokou, and Bert M. Cregg

Recently, there has been an increasing interest in using live containerized conifers as an alternative to traditional cut Christmas trees. Live trees are used indoors for the holiday season and can be planted in the home landscape after the holiday

Free access

Ryan N. Contreras

Platycladus orientalis , Thuja occidentalis , and T. plicata are evergreen conifers and from each species, cultivars have been selected to fill many niches in modern landscapes. Platycladus orientalis , oriental arborvitae, is native to China

Free access

Yi-Xuan Kou, Hui-Ying Shang, Kang-Shan Mao, Zhong-Hu Li, Keith Rushforth, and Robert P. Adams

Leyland cypress, a rapidly growing hybrid conifer that possesses important ornamental and economic values, is widely cultivated in the United Kingdom, United States, Australia, New Zealand, and many other countries ( Hinesley et al., 2008 ; James

Free access

Robert R. Tripepi, Mary W. George, K. Amanda Linskey, John E. Lloyd, and Jennifer L. Van Wagoner

Production of balled and burlapped conifers is an important part of the total nursery stock sales of landscape plants grown in the United States. In Idaho, 2005 farm gate value of balled and burlapped plants was U.S. $28.6 million and comprised 71

Open access

Bryan K. Sales, David R. Bryla, Kristin M. Trippe, Jerry E. Weiland, Carolyn F. Scagel, Bernadine C. Strik, and Dan M. Sullivan

, Central Point, OR). This is a commercially available biochar manufactured from mixed conifers during conversion of wood to energy at Biomass One, a 30-MW wood-debris-fired power plant (White City, OR). The bokashi was produced from rice bran fermented with

Free access

Len Burkhart, Martin Meyer Jr., and S. Dorner Dr.

Rooting of shoots from in vitro culture of most conifers can be difficult. An antigibberellin, ancymidol, has been shown to promote rooting of in vitro proliferated shoots of asparagus clones, but it has not been tested on conifers. Ancymidol and flurprimidol was tested for rooting on established cultures of Lake States white pine (Pinus strobus). Pulse treatments containing 5 uM ancymidol and 0.5 uM NAA gave 43% rooting, while pulse treatment with 0.5 uM NAA resulted in 7% root formation. Flurprimidol also stimulated root formation on white pine shoots, but was less than ancymidol. Thuja occidentalis `Hetz's Wintergreen' formed roots on 87% of in vitro proliferated shoots when given a pulse treatment with 5 uM ancymidol and 50 uM NAA. Shoots initiated an average of 10 roots after 60 days on vermiculite containing 1/2 liquid MCM medium.

Free access

Len Burkhart, Martin Meyer Jr., and S. Dorner Dr.

Rooting of shoots from in vitro culture of most conifers can be difficult. An antigibberellin, ancymidol, has been shown to promote rooting of in vitro proliferated shoots of asparagus clones, but it has not been tested on conifers. Ancymidol and flurprimidol was tested for rooting on established cultures of Lake States white pine (Pinus strobus). Pulse treatments containing 5 uM ancymidol and 0.5 uM NAA gave 43% rooting, while pulse treatment with 0.5 uM NAA resulted in 7% root formation. Flurprimidol also stimulated root formation on white pine shoots, but was less than ancymidol. Thuja occidentalis `Hetz's Wintergreen' formed roots on 87% of in vitro proliferated shoots when given a pulse treatment with 5 uM ancymidol and 50 uM NAA. Shoots initiated an average of 10 roots after 60 days on vermiculite containing 1/2 liquid MCM medium.

Free access

A.M. Wagner and J.T. Fisher

Dormancy level is an important factor in rooting stem cuttings of conifers. Eldarica pine, a Mediterranean species, is a multiple flushing pine that does not appear to express endodormancy in southern New Mexico. Photoperiod manipulations can alter the dormancy level of some conifer species; however, effects on eldarica pine are unknown. Half-sib stock plants were randomly assigned to one of three photoperiods: natural daylength (>12 hours, control), long-term (7 months) exposure to 9-hour daylength (LTSD), and 2-week exposure to 9-hour daylength (STSD). Of the cuttings from LTSD stock plants, 78% rooted; however, only 67% of the cuttings from the other two treatments rooted. Differences in rooting also were related to shoot type of the cuttings. Cuttings from expanded short shoots without a bud rooted more frequently than cuttings from branch shoots with or without a bud present. Applications of these results are discussed.