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Plant Protection and Quarantine (PPQ) is one of six operational program units within the Animal and Plant Health Inspection Service (APHIS) of the United States Department of Agriculture (USDA). The PPQ works to safeguard agriculture and natural resources in the U.S. against the entry, establishment, and spread of animal and plant pests, and noxious weeds in order to help ensure the protection ...
Chemical control poses risks to other plants, soil chemistry and biology, water quality, and animals; it should only be utilized if manual control is insufficiently effective. Pre-emergent chemicals can be most effective in combination with manual control; it prevents the annual seeds of T. terrestris from sprouting to make new plants.
Tree planting is the process of transplanting tree seedlings, generally for forestry, land reclamation, or landscaping purposes. It differs from the transplantation of larger trees in arboriculture and from the lower-cost but slower and less reliable distribution of tree seeds.
Method. This method of pollination is done by manually transferring pollen from the stamen of one plant to the pistil of another. The plant the pollen is taken from is called the pollen donor or pollen parent, while the plant receiving the pollen is the seed parent. Hand-pollination is often done with a cotton swab or small brush, but can also ...
Plants have evolved to require different amounts of light, and lengths of daytime; their growth and development is determined by the amount of light/light intensity that they receive. Control of this may be achieved artificially through the use of fluorescent lights in an indoor setting. Manipulating the amount of light also controls flowering.
This is a list of companion plants, traditionally planted together. Many more are in the list of beneficial weeds. Companion planting is thought by its practitioners to assist in the growth of one or both plants involved in the association. Possible mechanisms [ 1 ] include attracting beneficial insects, [ 2 ] repelling pests, [ 3 ] or providing nutrients such as by fixing nitrogen, [ 4 ...
Pruning is a horticultural, arboricultural, and silvicultural practice involving the selective removal of certain parts of a plant, such as branches, buds, or roots. The practice entails the targeted removal of diseased, damaged, dead, non-productive, structurally unsound, or otherwise unwanted plant material from crop and landscape plants.
Depending on its species, a nematode may be beneficial or detrimental to plant health. From agricultural and horticulture perspectives, the two categories of nematodes are the predatory ones, which kill garden pests; and the pest nematodes, which attack plants, or act as vectors spreading plant viruses between crop plants. [62]