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It profiles plants that are invasive or noxious weeds, [3] threatened or endangered, [3] giving out data on worldwide distribution [3] of its habitat; as well as passport information. [6] GRIN also incorporates an Economic Plants Database. [3] The network is maintained by GRIN's Database Management Unit (GRIN/DBMU). [2]
This list of horticulture and gardening books includes notable gardening books and journals, which can to aid in research and for residential gardeners in planning, planting, harvesting, and maintaining gardens. Gardening books encompass a variety of subjects from garden design, vegetable gardens, perennial gardens, to shade gardens.
The United States Department of Agriculture (USDA) is an executive department of the United States federal government that aims to meet the needs of commercial farming and livestock food production, promotes agricultural trade and production, works to assure food safety, protects natural resources, fosters rural communities and works to end hunger in the United States and internationally.
It is a unique resource documenting new introductions of fruit and nut cultivars as well as specimens discovered by USDA's plant explorers, representing 38 plant families in all. [20] Some of these watercolors were published in the Yearbook of the United States Department of Agriculture in the 1902–1913 period, but many were never published ...
Since the establishment of the Office of Seed and Plant Introduction there has been an office within the USDA with this responsibility, though its name changes periodically. [2] Today, the branch of the USDA responsible for collecting and introducing new plant species is called the National Germplasm Resources Laboratory. [2] [7]
A honey bee collecting nectar from an apricot flower.. The nectar resource in a given area depends on the kinds of flowering plants present and their blooming periods. Which kinds grow in an area depends on soil texture, soil pH, soil drainage, daily maximum and minimum temperatures, precipitation, extreme minimum winter temperature, and growing degre
a) Reduction of logging slash, plant competition, and humus prior to direct seeding, planting, scarifying or in anticipation of natural seeding in partially cut stands or in connection with seed-tree systems. b) Reduction or elimination of unwanted forest cover prior to planting or seeding, or prior to preliminary scarification thereto.
Traditionally, an operator would plant at about 4.5-5.5 mph for optimal performance. However, with the advent of these systems electrical motors match the speed of the tractor and "dead-drop" the seed in the trench using either a belt or brush-belt which cause the forward momentum of the planter to be offset by the rearward momentum of the seed.