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Gentian seedlings in a plant nursery. Plant propagation is the process by which new plants grow from various sources, including seeds, cuttings, and other plant parts. Plant propagation can refer to both man-made and natural processes. Propagation typically occurs as a step in the overall cycle of plant growth.
Diameter at breast height, or DBH, is a standard method of expressing the diameter of the trunk or bole of a standing tree. DBH is one of the most common dendrometric measurements. Electronic calipers can measure diameter at breast height and send measured data via Bluetooth to a field computer .
Prochnau (1963), [129] four years after sowing, found that 14% of viable white spruce seed sown on mineral soil had produced surviving seedlings, at a seed:seedling ratio of 7.1:1. With Engelmann spruce, Smith and Clark (1960) [ 130 ] obtained average seventh year seed:seedling ratios of 21:1 on scarified seedbeds on dry sites, 38:1 on moist ...
If a nursery plant is sold as "bare root", it means that soil has been removed from the roots, the product being sold is just the plant. [80] Plants sold as bare root are marketed in the winter, [80] to sell to customers in spring. Plants sold as bare root include herbaceous and woody perennial plants. [75]
The seedlings of some flowering plants have no cotyledons at all. These are said to be acotyledons. The plumule is the part of a seed embryo that develops into the shoot bearing the first true leaves of a plant. In most seeds, for example the sunflower, the plumule is a small conical structure without any leaf structure. Growth of the plumule ...
[1] [2] When taking forest inventory the following are important things to measure and note: species, diameter at breast height (DBH), height, site quality, age, and defects. From the data collected one can calculate the number of trees per acre, the basal area, the volume of trees in an area, and the value of the timber. Inventories can be ...
Sapling. Phyllanthus acidus is an intermediary between a shrub and tree, reaching 2 to 9 m (6½ to 30 ft) high. [2] The tree's dense and bushy crown is composed of thickish, tough main branches, at the end of which are clusters of deciduous, greenish, 15-to-30-cm long branchlets.
Like all Borassus species, B. flabellifer is dioecious with male and female flowers on separate plants. But very rarely male and female flowers in same trees have also been noticed [ 7 ] The male flowers are less than 1 centimetre (0.39 in) long and form semi-circular clusters, which are hidden beneath scale-like bracts within the catkin -like ...