• Study Resource
  • Explore Categories
    • Arts & Humanities
    • Business
    • Engineering & Technology
    • Foreign Language
    • History
    • Math
    • Science
    • Social Science

    Top subcategories

    • Advanced Math
    • Algebra
    • Basic Math
    • Calculus
    • Geometry
    • Linear Algebra
    • Pre-Algebra
    • Pre-Calculus
    • Statistics And Probability
    • Trigonometry
    • other →

    Top subcategories

    • Astronomy
    • Astrophysics
    • Biology
    • Chemistry
    • Earth Science
    • Environmental Science
    • Health Science
    • Physics
    • other →

    Top subcategories

    • Anthropology
    • Law
    • Political Science
    • Psychology
    • Sociology
    • other →

    Top subcategories

    • Accounting
    • Economics
    • Finance
    • Management
    • other →

    Top subcategories

    • Aerospace Engineering
    • Bioengineering
    • Chemical Engineering
    • Civil Engineering
    • Computer Science
    • Electrical Engineering
    • Industrial Engineering
    • Mechanical Engineering
    • Web Design
    • other →

    Top subcategories

    • Architecture
    • Communications
    • English
    • Gender Studies
    • Music
    • Performing Arts
    • Philosophy
    • Religious Studies
    • Writing
    • other →

    Top subcategories

    • Ancient History
    • European History
    • US History
    • World History
    • other →

    Top subcategories

    • Croatian
    • Czech
    • Finnish
    • Greek
    • Hindi
    • Japanese
    • Korean
    • Persian
    • Swedish
    • Turkish
    • other →
 
Profile Documents Logout
Upload
16 Easy Steps to Gardening in Alaska
16 Easy Steps to Gardening in Alaska

... to 3 pounds per 100 square feet, working it into the top 2 inches of garden soil. Both nitrogen and potash will injure seed and the roots of plants on contact, so thoroughly mix the fertilizer into the seedbed. For equal results using approximately one-half the fertilizer, place a band of complete f ...
Corn Fields Callin` It Quit: Check for Stalk Rot
Corn Fields Callin` It Quit: Check for Stalk Rot

... were conducive for disease development. A fungicide application may have been warranted on susceptible hybrids between the corn growth stages of tassel and brown silk (sometimes before dent if disease continued to spread up the plant) to try to preserve corn yield. It has been well documented, that ...
PDF view - Woody Plants Database
PDF view - Woody Plants Database

... 'Compactum' - compact, slow-growing, rounded form; tolerant of juglone; pink buds open in spring to sweetly fragrant white flowers arranged in snowball-like clusters, to 3" across; fall foliage dull red to wine-red to burgundy; grows 2.5 -4' tall and wide ...
Production guidelines for Carrot agriculture, forestry & fisheries
Production guidelines for Carrot agriculture, forestry & fisheries

... Compost or organic manure should not be applied since they cause unattractive, hairy roots, with a coarser texture. Carrots have low nitrogen requirements and good yields can be obtained with 80 kg/ha of nitrogen applications. Nitrogen can be applied at planting and the remainder at 4 to 8 weeks. Fo ...
sindh textbook borad jamshoro
sindh textbook borad jamshoro

... The use of soil for greenhouse production before the 1960s was common. Today a few growers still use soil in their mixes. The bulk of production is in soilless mixes. Soilless mixes must provide support, aeration, nutrient and moisture retention just as soils do, but the addition of fertilizers or n ...
Crop Sheet and How To Grow Peas
Crop Sheet and How To Grow Peas

... The main pest is the pea moth, whose maggot-like caterpillar will be found in pods of peas – so do look out before eating! Early sowings of peas can help to avoid attack by the peas moth. Insect-proof mesh will keep these moths off and you can buy a trap. Other pests include pea aphid and pea thrips ...
Rhododendron - Azalea or Rhododendron (Ericaceae)
Rhododendron - Azalea or Rhododendron (Ericaceae)

... reaching the roots; alternatively, if the soil has settled at the foundation and slopes toward the structure, occasional wet conditions will result in root rot; in either case, soil is often very poor at foundations of homes built since the advent of heavy earth-moving machinery, and must be amended ...
China (PRC) – Cabbage, Celery and Green Onion
China (PRC) – Cabbage, Celery and Green Onion

... standard synthetic fertilizer regime of ammonium phosphate. Each treatment consisted of 25 individual plants in 20 cm clay flower pots with 4.5 kg of soil in each. Summary and Conclusions: The rose plants tested clearly showed a positive growth in the plants and the flowers at serial dilutions of Ag ...
management of soil phosphorus and plant adaptation
management of soil phosphorus and plant adaptation

... Phosphorus is one of the seventeen essential nutrients required for plant growth. Despite its importance, it is limiting crop yield on more than 40% of the world’s arable land. Moreover, global P reserves are being depleted at a higher rate and according to some estimates there will be no soil P res ...
Sorghum production
Sorghum production

... choice depends on the planned yield. Various methods, each having limitations, can be used to determine yield potential. The most reliable method is to use long-term yield data from each producer. This reflects the inherent yield of the specific environment, as well as the effect of agronomic practi ...
Roots Roots generally occur below the ground, where they anchor
Roots Roots generally occur below the ground, where they anchor

... Roots generally occur below the ground, where they anchor the plant and extract water and minerals. Most broadleaved plants have a strong central descending tap root and many finely branching lateral or side roots. Grasses and similar plants generally do not have tap and lateral roots, but have a mo ...
Comparison of Lead Uptake by Four Seedling Species (Acer
Comparison of Lead Uptake by Four Seedling Species (Acer

... affecting cell division (Enu et al., 2000). Patil and Umadevi (2014) also suggested that Pb could bind nucleic acids, thus impeding a proper process of DNA replication and, ultimately, affecting cell division. Lead is not an essential element for plant and its great accumulation in plants can lead t ...
agronomy - Белорусская государственная сельскохозяйственная
agronomy - Белорусская государственная сельскохозяйственная

... Exercise 13. Translate the following sentences paying attention to the underlined words. 1. We saw the larvae on that crop in spring. 2. We observed this phenomenon under field conditions. 3. They found no fungus here. 4. This white larva feeds on the roots. 5. We can find many fungi on crop. 6. So ...
Quick Guide to Common Landscape Hydrangeas
Quick Guide to Common Landscape Hydrangeas

... harshly or you’ll miss a season of blooms…less is more. ...
PDF view - Woody Plants Database
PDF view - Woody Plants Database

... Woody Plants Database [http://woodyplants.cals.cornell.edu] ...
native plant list - Portland Water District
native plant list - Portland Water District

... high but can reach 10 feet. Spreads easily and forms colonies. Often found in coastal areas. Foliage is semievergreen aromatic. Will grow well in dry, infertile, sandy, acidic soils. Grows best in full sun but will tolerate partial shade. Zones 2-6. Beach Plum (Prunus maritima) Grows from 6 to 8 fee ...
Buffalo Niagara RIVERKEEPER 57
Buffalo Niagara RIVERKEEPER 57

... Flowering Dogwood (Cornus florida) Sun Requirements: Full sun to part shade Soil Requirements: Rich, well-drained soils Mature Height: 12-36 feet Wildlife Value: Attracts birds and butterflies Garden Use: Flowering Dogwood is considered one of the most spectacular native flowering trees. White flowe ...
The grazier`s guide to pastures
The grazier`s guide to pastures

... geological age, climate, topography and land use, have produced a range of soils which vary in fertility, acidity and many other aspects. Tablelands soils are generally acidic, of low to moderate soil fertility and phosphorus, sulphur and molybdenum deficiencies are common. ...
Ruby Spice Summersweet
Ruby Spice Summersweet

... the fall. The fruit is not ornamentally significant. The smooth tan bark is not particularly outstanding. Landscape Attributes: Ruby Spice Summersweet is a multi-stemmed deciduous shrub with a shapely oval form. Its average texture blends into the landscape, but can be balanced by one or two finer o ...
Weed Control - Ecology Center
Weed Control - Ecology Center

... Weeds develop resistance to herbicides over time. Herbicides kill beneficial organisms and pollinators in your garden as well as contaminate our waterways, soil and food. For these reasons, synthetic herbicides should be completely avoided and least-toxic herbicides should be used only on rare occas ...
Plants - shade and wet - Portland Water District
Plants - shade and wet - Portland Water District

... produces more fruit with adequate light. Leaves are evergreen and red berries remain on the plant all winter. Young leaves and berries have a wintergreen flavor. Zones 3-5. Woodbine/Virginia Creeper (Parthenocissus quinquefolia) A climbing vine that can reach heights of up to 40 feet. Grows easily. ...
Restoration Ecology 7
Restoration Ecology 7

... Specifically, some perennial plants create within the reach of their roots and branches "resource islands" (Halvorson et al. 1994), mounds that originate from the deposition and subsequent stabilization of windborne soil particles under plant canopies (Armbrust & Bilbro 1997). These fine-textured so ...
Section 5
Section 5

... no where else in the world. These hotspots are in great danger of extinction and suffer greatly from ecological disruption, caused by rapid human growth. These hotspots are set aside as an emergency action strategy to preserve as much of the world's remaining biodiversity as possible. ...
Slide 1
Slide 1

... shrubs and flowers. It will settle to 2-3 inches deep. • Pull mulch away from the base of woody plants. ...
Growing plants from seed
Growing plants from seed

... plant. Many gardeners prefer making their own seedlings indoors during the winter and early spring. Some species need light to germinate well, others need darkness, but for many, light has no importance. But one thing applies to every plant: they all need a lot of light to grow. Artificial light is ...
< 1 ... 7 8 9 10 11 12 13 14 15 ... 25 >

Base-cation saturation ratio

Base-cation saturation ratio (BCSR) is a method of interpreting soil test results that is widely used in sustainable agriculture, supported by the National Sustainable Agriculture Information Service (ATTRA) and claimed to be successfully in use on over a million acres (4,000 km²) of farmland worldwide. The traditional method, as used by most university laboratories, is known variously as the 'sufficiency level', sufficiency level of available nutrients (SLAN), or Index(UK) system. The sufficiency level system is concerned only with keeping plant-available nutrient levels within a well studied range, making sure there is neither a deficiency nor an excess. In the BCSR system, soil cations are balanced according to varying ratios often stated as giving 'ideal' or 'balanced' soil. These ratios can be between individual cations, such as the calcium to magnesium ratio, or they may be expressed as a percentage saturation of the cation exchange capacity (CEC) of the soil. Most 'ideal soil' theories stress both approaches. (See also – Cation exchange capacity)Strictly speaking, the 'base' cations are limited to calcium, magnesium, potassium, and sodium, and these are the primary nutrients that BCSR methods are most concerned with balancing. However, many proponents of 'ideal soil' theories also stress the importance of balancing the anions phosphorus, sulphur and chlorine as well as numerous minor and trace elements. The conventional SLAN system does not generally test for minor and trace elements unless there is sufficient cause to suspect a deficiency or toxicity.BCSR supporters argue that a soil balanced using their methods leads to greater crop yield and nutritional quality, as well as increasing the soil biological activity and the physical properties of tilth, aeration, and moisture retention. There is currently no publicly available research or trial data to support these claims, but BCSR systems are fairly widely used in organic farms and many positive testimonials from farmers and gardeners can be found on the internet and in alternative agriculture literature. Under most circumstances following BCSR systems will not lead to negative effects. The main concern for farmers is simply the unnecessary expense of applying soil amendments beyond what the crop can actually utilise.
  • studyres.com © 2025
  • DMCA
  • Privacy
  • Terms
  • Report