Chrysanthemum, wheat, and soybean were grown in a growth chamber to study the effects of airflow direction, velocity, and turbulence on vegetative growth. These three plant species were chosen to examine how plants with different leaf architectures and morphology are influenced by varying air velocity and pattern. A hot wire anemometer accurate to ±0.025 m s-1 and capable of responding to 50 khz turbulent velocity fluctuations was used to characterize the environment in a growth chamber under three different experimental conditions: <0.50 m s-1 horizontal velocity, >1.00 m s-1 horizontal velocity, and <0.50 m s-1 vertical velocity. Plants were grown under the three different treatments for five weeks with plant height, width, stem diameter, and node number, and fresh and dry weights of leaves, stem, and roots determined at three internals throughout each experiment. Tire variation in plant development resulting from the different treatments has practical implications for using ventilation to aid in controlling plant growth and development.
-sodium is labeled for use in turfgrass as Velocity (Valent U.S.A. Corp., Walnut Creek, CA) herbicide for selective postemergent control of annual bluegrass ( Poa annua L.) and roughstalk bluegrass in creeping bentgrass ( Agrostis stolonifera L.) and
2004 Velocity product label Valent U.S.A. Corp Walnut Creek, CA Anonymous 2005 Certainty product label Monsanto Company St. Louis, MO Askew, S.D. Beam, J.B. McCall, D.S. Barker, W
,6-dimethoxypyrimidin-2-yl)oxy] benzoic acid} (BYS) and sulfosulfuron {1-[4,6-dimethoxypyrimidin-2-yl]-3-[2-ethanesulfonyl-imidazo(1,2-a)pyridine-3-yl) sulfonyl]urea} (SULFO). Bispyribac–sodium is labeled for use in turfgrass as Velocity™ (Valent U.S.A. Corp., Walnut
A method is described for separating large and small pollen effectively from a heterogeneous mixture. This method potentially is applicable to separation of pollen grains of different ploidy levels, since “unreduced” 2n pollen is larger than normal pollen (n); it might then be used to increase the efficiency of a breeding program employing sexual polyploidization and to diminish crossing inefficiencies in interploid crosses.
, and abiotic stress mitigation of organically grown hydroponic tomatoes under adverse environmental conditions. Materials and Methods Plant materials and growth conditions. Hybrid Velocity F1 and Sigma F1 (Semillas Fito; Barcelona, Spain
landscaping. Guam, 48 km long × 19 km wide at a latitude of 13.5° N in the western Pacific Ocean, lies within the trade wind zone where the dry season winds are typically a constant ENE with a velocity of 14–25 km·h −1 ( Lander, 1994 ). One historical note
, USA), ‘Velocity F1’, ‘Sigma F1’ (Semillas Fito; Barcelona, Spain), ‘SV4129TH’, ‘Shourouq F1’ (Seminis ® ; Bayer Pty. Ltd.; Johannesburg, South Africa), and ‘Salimah F1’ (H.M. Clause SAS, Portes-Les-Valence, France) are hybrid cultivars. The organic
velocity of 0.5 m/s was less than 0.6 °C, and the sd of canopy temperature without air disturbance was more than 1.1 °C. Stagnant air will form a boundary layer on the surface of plants, and as a result, the physiological processes of crops are suppressed
self-incompatible ( Smith, 1982 ). In this study, we evaluated changes in germination, germination velocity, and viability of seeds of prevariety germplasms of these four native tickseed species when freshly harvested seeds from cultivated plants were