SYNOPSIS The effects of nursery practices on freeze tolerance of P taeda and P elliottii seedlings were examined by placing the seedlings in a freezing chamber and lowering the temperature to -10C. Injury was evaluated 10 days after the freeze treatment by examining cambial tissue (browning test). Top-pruning P taeda seedlings (three times) increased freeze tolerance while rootwrenching (six ti...

We compared responses of cuttings and seedlings of Eucalyptus globulus Labill. subsp. globulus to water stress in a 9-week greenhouse experiment. Optimal water availability was achieved by watering pots daily to field capacity, and two water stress treatments were imposed by reducing watering frequency to every 6 or 14 days. Within each treatment, height growth rates of cuttings and seedlings w...

Plant growth in a controlled environment system is highly dependent on the availability of light. The light-emitting diode (LED) capable providing needed quality and quantity light for plant. purpose this study was to determine effect white LED intensity vitro propagated apple (M-9) seedlings system. Seedlings were grown 30 days under five different intensities: 100–500 (L1), 250–500 (L2), 500–...

Biological agents are critical in the management of major diseases oil palm plantations. The potential arbuscular mycorrhiza fungi (AMF) and Trichoderma spp. to control basal stem rot disease was investigated this study. Three-month-old seedlings treated with AMF since beginning planting demonstrated colonization roots. With a 25 gram treatment main nursery, increased by 85.99% TBM-1 (the 1-yea...

Seedling damage during transportation often occurs in seedling that using container. The use of mahogany seeds sown on cocopeat as bare root is expected to answer the problems from nursery planting site. purpose this study was determine effect Mahagony age (on medium nursery) and length time delay (bare-root seedling). This used a completely randomized design (CRD) factorial with two factors, n...

Diffusates from seedlings and root exudates from 6-week-old plants of a monoecious line of cucumber, Cucumis sativus L., contained considerably higher levels of gibberellin-(GA-) like substances than did those from plants of an isogenic gynoecious line. Most of the GA-like activity was found in a chromatogram region typical of GA(1) and GA(3); some activity, particularly in root exudates, appea...

an ability of the fluorescent pseudomonad bacteria is to secrete such secondary metabolites as hydrogen cyanide, protease, salicylic acid as well as siderophore which prevent the growth of soil-habitant pathogens. tests were done for evaluating the materials produced by the said bacteria. in the tests' cultures, p. aeruginosa strains 7nsk2, utpf92, and utpf86 produced the most hydrogen cya...

IN ARKANSAS, 'Concord' grapevines trained to the Geneva Double Curtain system have consistently produced larger yields than vines trained to the bilateral cordon or Umbrella Kniffen systems [Ark. Farm Res. 28(5):12; 1978]. However, information was needed on the influence of pruning severity, cane length and shoot positioning on yield and juice quality as determined by percentage of soluble soli...

eight wheat varieties some of which were earlier reported to be resistant to pythium arrhennmanes, were inoculated with p. arrhenomanes. inoculation was performed by placing 2-day-old seedlings on the edge of a p. arrhenomanes culture on corn meal agar for 3 h at 25°c. infected seedlings were then transferred to test tubes (9 mm dia.) containing glass beads and 1 ml of sterile water, and in...