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A plant which completes its life cycle (i.e. germinates, reproduces, and dies) within two years or growing seasons. Biennial plants usually form a basal rosette of leaves in the first year and then flower and fruit in the second year. bifid Forked; cut in two for about half its length. Compare trifid. bifoliate
These modifications change the suite of species most adapted to grow, survive, and reproduce in an area, causing floristic changes. These floristic changes contribute to structural changes inherent in plant growth even in the absence of species changes (especially where plants have a large maximum size, i.e., trees), causing slow and broadly ...
(pl.) aboiteaux A sluice or conduit built beneath a coastal dike, with a hinged gate or a one-way valve that closes during high tide, preventing salt water from flowing into the sluice and flooding the land behind the dike, but remains open during low tide, allowing fresh water precipitation and irrigation runoff to drain from the land into the sea; or a method of land reclamation which relies ...
Horticulture is the art and science of growing ornamental plants, fruits, vegetables, flowers, trees and shrubs. Horticulture is commonly associated with the more professional and technical aspects of plant cultivation on a smaller and more controlled scale than agronomy .
The zinc content of commercially available plant-based food ranges from 3 to 10 μg/g fresh weight. [77] Copper: Essential micronutrient: Cu 2+ 0.01 [71] 1 [70] CuSO 4: Plant sensitivity to copper is highly variable. 0.1 ppm can be toxic to some plants [71] while a concentration up to 0.5 ppm for many plants is often considered ideal. [70 ...
Plant domestication is seen as the birth of agriculture. However, it is arguably proceeded by a very long history of gardening wild plants. While the 12,000 year-old date is the commonly accepted timeline describing plant domestication, there is now evidence from the Ohalo II hunter-gatherer site showing earlier signs of disturbing the soil and cultivation of pre-domesticated crop species. [8]
The feeding relationships between different species in a given ecosystem. Also called a food chain, food network, or trophic social network. weed A plant growing where it is not wanted, often at a high rate of dispersal. wetland A type of ecosystem consisting of land permanently or seasonally saturated with water; the habitat of aquatic plants ...
Within a guild each species of insect or plant provides a unique set of diverse services that work in harmony. Plants may be grown for food production, drawing nutrients from deep in the soil through tap roots, balancing nitrogen levels in the soil , for attracting beneficial insects to the garden, and repelling undesirable insects or pests.