Crop science is a highly integrative science employing the
... are almost uniformly susceptible to two relatively new U.S. biotic stresses: soybean aphid and soybean rust. ...
... are almost uniformly susceptible to two relatively new U.S. biotic stresses: soybean aphid and soybean rust. ...
Monitoring soil erosion in the Souss basin, Morocco, with a
... defined local coordinate system is used since official survey points are not available and GPS measuring is not precise enough. Systematical aerial survey of chosen sites follow a flight plan designed within the controlling software on the laptop. One important requirement for further processing is ...
... defined local coordinate system is used since official survey points are not available and GPS measuring is not precise enough. Systematical aerial survey of chosen sites follow a flight plan designed within the controlling software on the laptop. One important requirement for further processing is ...
- Wiley Online Library
... hypothesis that endophyte-symbiotic tall fescue could produce inhibitory allelochemicals (but see, Renne et al. 2004). However, we did not test whether the presence of the endophyte contributed to the negative effects of tall fescue leachates on trees. In addition, we did not resolve whether effects ...
... hypothesis that endophyte-symbiotic tall fescue could produce inhibitory allelochemicals (but see, Renne et al. 2004). However, we did not test whether the presence of the endophyte contributed to the negative effects of tall fescue leachates on trees. In addition, we did not resolve whether effects ...
PDF
... Gut Wall Ecosystem:The common species of earthworm ecological groups foster the development of distinct gut wall-associated bacterial communities and that the relative abundance of specific bacteria within the gut wall, including Proteobacteria, Firmicutes and an actinobacterium, is ecological group ...
... Gut Wall Ecosystem:The common species of earthworm ecological groups foster the development of distinct gut wall-associated bacterial communities and that the relative abundance of specific bacteria within the gut wall, including Proteobacteria, Firmicutes and an actinobacterium, is ecological group ...
671.pdf
... 2006). As salts accumulate in leaf vacuoles, compatible solutes are synthesized in the cytoplasm, in part, to maintain cellular water relations (Bartels and Sunkar, 2005). Since functional cells are necessary for nutrient export, we hypothesized that the salttolerant chenopods, due to compatible sol ...
... 2006). As salts accumulate in leaf vacuoles, compatible solutes are synthesized in the cytoplasm, in part, to maintain cellular water relations (Bartels and Sunkar, 2005). Since functional cells are necessary for nutrient export, we hypothesized that the salttolerant chenopods, due to compatible sol ...
Global Extent of Soil Degradation - Wageningen UR E
... Although measurements of erop yield reductions caused by soil erosion are difficult, mainly because over time farmers may substitute increasing amounts of fertilizers to compensate for the loss of the natura! fertility of the soil, studies in the U.SA. have established relationships between soil ero ...
... Although measurements of erop yield reductions caused by soil erosion are difficult, mainly because over time farmers may substitute increasing amounts of fertilizers to compensate for the loss of the natura! fertility of the soil, studies in the U.SA. have established relationships between soil ero ...
PowerPoint プレゼンテーション
... *The degree of humification was determined by calculating ΔlogK(logK400nm-logK600nm) and RF({K600nm×1,000} / {0.1N KMnO4 consumption(mL) / 30mL of humic acid solution) ...
... *The degree of humification was determined by calculating ΔlogK(logK400nm-logK600nm) and RF({K600nm×1,000} / {0.1N KMnO4 consumption(mL) / 30mL of humic acid solution) ...
Crop Protection Research Institute PESTICIDE USE AND
... population recovery of key farmland bird species such as skylark and yellowhammer. Modern, efficient combine harvesters leave less wastage and grain remaining in stubbles after harvest, which, when combined with the effects of more efficient weed control, further reduced the availability of food for ...
... population recovery of key farmland bird species such as skylark and yellowhammer. Modern, efficient combine harvesters leave less wastage and grain remaining in stubbles after harvest, which, when combined with the effects of more efficient weed control, further reduced the availability of food for ...
Weathering
... such as granite, salt crystal growth may pry loose individual minerals. It is similar to frost wedging. Most salt crystal growth occurs in hot, arid areas, although it probably affects rocks in some coastal regions as well. ...
... such as granite, salt crystal growth may pry loose individual minerals. It is similar to frost wedging. Most salt crystal growth occurs in hot, arid areas, although it probably affects rocks in some coastal regions as well. ...
Folie 1 - World Agroforestry Centre
... Widely spaced trees inter-cropped with annual or perennial crops. It comprises alley cropping, scattered trees and line belts. ...
... Widely spaced trees inter-cropped with annual or perennial crops. It comprises alley cropping, scattered trees and line belts. ...
Folie 1
... Widely spaced trees inter-cropped with annual or perennial crops. It comprises alley cropping, scattered trees and line belts. ...
... Widely spaced trees inter-cropped with annual or perennial crops. It comprises alley cropping, scattered trees and line belts. ...
Ecological mechanisms associated with the positive
... bioavailable NH4þ are strongly influenced by the size of the soil-organic-matter pool (Booth et al. 2005), which is greater at higher species diversity (Fornara and Tilman 2008). In this study we measured net soil N-mineralization rates, being aware that this represents an indirect index related to ...
... bioavailable NH4þ are strongly influenced by the size of the soil-organic-matter pool (Booth et al. 2005), which is greater at higher species diversity (Fornara and Tilman 2008). In this study we measured net soil N-mineralization rates, being aware that this represents an indirect index related to ...
Bio 6.2
... loss of forests, can have a negative effect on soil quality. This is especially true since more than half of the world’s mature forests have been lost to deforestation. • In some areas, forests can regrow after cutting, but it can take a century for succession to produce mature, old-growth forests. ...
... loss of forests, can have a negative effect on soil quality. This is especially true since more than half of the world’s mature forests have been lost to deforestation. • In some areas, forests can regrow after cutting, but it can take a century for succession to produce mature, old-growth forests. ...
Soil materials stripped ahead of the open cut area and under the
... well as soil within the Eastern and Western Stockpile Areas, will be placed on completed reshaped areas within the open cut and Western Emplacement where available. Year 8 of Expanded Operation Mining will continue to advance in a southerly direction, with the eastern pit limit adjacent to the reali ...
... well as soil within the Eastern and Western Stockpile Areas, will be placed on completed reshaped areas within the open cut and Western Emplacement where available. Year 8 of Expanded Operation Mining will continue to advance in a southerly direction, with the eastern pit limit adjacent to the reali ...
E - Chapter 4 - Charleville Gardens
... Is a measure of soil quality by the soil’s ability to exchange ions Cations are positively (+) charged ions Anions are negatively (-) charged ions Minerals required by plants form cations in the soil ...
... Is a measure of soil quality by the soil’s ability to exchange ions Cations are positively (+) charged ions Anions are negatively (-) charged ions Minerals required by plants form cations in the soil ...
Phosphorus Use Efficiency in Production Agriculture
... dependent on impact on effectiveness in meeting grower objectives – Optimizing profitability – Minimizing nutrient loss – Providing system sustainability • Long-term fertilizer P efficiency in North America is usually high but short-term efficiency can be quite low • Short-term efficiency is most im ...
... dependent on impact on effectiveness in meeting grower objectives – Optimizing profitability – Minimizing nutrient loss – Providing system sustainability • Long-term fertilizer P efficiency in North America is usually high but short-term efficiency can be quite low • Short-term efficiency is most im ...
Impact Assessment of Soil Contamination with Antibiotics (for
... Soil Deep heavy loamy calcareous low-humus ordinary chernozem developed from yellow-brown loess like loams in the Botanical Garden of the Southern Federal University (Rostov-on-Don) was studied. Such soils are typical of the south of European Russia and have special significance in ensuring food sec ...
... Soil Deep heavy loamy calcareous low-humus ordinary chernozem developed from yellow-brown loess like loams in the Botanical Garden of the Southern Federal University (Rostov-on-Don) was studied. Such soils are typical of the south of European Russia and have special significance in ensuring food sec ...
soils: chemical transformations during weathering and soil formation
... physical (or mechanical) and chemical weathering. During physical weathering, rocks break in response to stresses that have been established within the rock. The breaking may occur along fracture planes in the rock or along mineral grain boundaries. Physical weathering does not produce any change in ...
... physical (or mechanical) and chemical weathering. During physical weathering, rocks break in response to stresses that have been established within the rock. The breaking may occur along fracture planes in the rock or along mineral grain boundaries. Physical weathering does not produce any change in ...
Spruce Beetle Quick Guide
... These benefits contribute to quality of life and are vital to state and local economies. However, without careful management of forest resources, these assets and community safety are at risk. It is important to remember that the spruce beetle is a native insect in Colorado's spruce forest ecosystem ...
... These benefits contribute to quality of life and are vital to state and local economies. However, without careful management of forest resources, these assets and community safety are at risk. It is important to remember that the spruce beetle is a native insect in Colorado's spruce forest ecosystem ...
effects of competition on resource availability and growth of a
... grasslands prior to European settlement. It is currently distributed throughout lower elevation ranges from the California coast to the Sierra Nevada foothills and generally on nonarable lowland soils or foothill range lands (Huenneke 1989). All target plants in this study were grown from seed colle ...
... grasslands prior to European settlement. It is currently distributed throughout lower elevation ranges from the California coast to the Sierra Nevada foothills and generally on nonarable lowland soils or foothill range lands (Huenneke 1989). All target plants in this study were grown from seed colle ...
C. Water Quality Monitoring: Water quality monitoring may be
... 2. Prior to its application on a permitted site, the beneficial use of CCB material must be part of the approved reclamation plan for the coal-mining permit. Unless determined otherwise by the Division, an ARP proposing the beneficial use of CCB material as a soil additive is a Significant ARP and t ...
... 2. Prior to its application on a permitted site, the beneficial use of CCB material must be part of the approved reclamation plan for the coal-mining permit. Unless determined otherwise by the Division, an ARP proposing the beneficial use of CCB material as a soil additive is a Significant ARP and t ...
Tillage
Tillage is the agricultural preparation of soil by mechanical agitation of various types, such as digging, stirring, and overturning. Examples of human-powered tilling methods using hand tools include shovelling, picking, mattock work, hoeing, and raking. Examples of draft-animal-powered or mechanized work include ploughing (overturning with moldboards or chiseling with chisel shanks), rototilling, rolling with cultipackers or other rollers, harrowing, and cultivating with cultivator shanks (teeth). Small-scale gardening and farming, for household food production or small business production, tends to use the smaller-scale methods above, whereas medium- to large-scale farming tends to use the larger-scale methods. There is a fluid continuum, however. Any type of gardening or farming, but especially larger-scale commercial types, may also use low-till or no-till methods as well.Tillage is often classified into two types, primary and secondary. There is no strict boundary between them so much as a loose distinction between tillage that is deeper and more thorough (primary) and tillage that is shallower and sometimes more selective of location (secondary). Primary tillage such as ploughing tends to produce a rough surface finish, whereas secondary tillage tends to produce a smoother surface finish, such as that required to make a good seedbed for many crops. Harrowing and rototilling often combine primary and secondary tillage into one operation.""Tillage"" can also mean the land that is tilled. The word ""cultivation"" has several senses that overlap substantially with those of ""tillage"". In a general context, both can refer to agriculture. Within agriculture, both can refer to any of the kinds of soil agitation described above. Additionally, ""cultivation"" or ""cultivating"" may refer to an even narrower sense of shallow, selective secondary tillage of row crop fields that kills weeds while sparing the crop plants.