Direct Seeding Mulch-Based Cropping Systems (DMC)
... to deal with acute soil degradation problems caused by soil and wind erosion, with an impact that reaches far beyond the initial areas. This degradation and concomitant loss of natural resources have very serious socioeconomic consequences—poverty, famine and outmigration. Everyone remembers the dus ...
... to deal with acute soil degradation problems caused by soil and wind erosion, with an impact that reaches far beyond the initial areas. This degradation and concomitant loss of natural resources have very serious socioeconomic consequences—poverty, famine and outmigration. Everyone remembers the dus ...
- Phosphorus in Soils and Plants
... gross P transformation rates are known. Available techniques for the quantification of gross P transformation rates rely on isotopic dilution principles. We developed a numerical 33P tracing model to quantify all relevant simultaneously occurring P transformation rates in soil. The tracing model com ...
... gross P transformation rates are known. Available techniques for the quantification of gross P transformation rates rely on isotopic dilution principles. We developed a numerical 33P tracing model to quantify all relevant simultaneously occurring P transformation rates in soil. The tracing model com ...
Facing Phosphorus Scarcity - Phosphorus in Soils and Plants
... gross P transformation rates are known. Available techniques for the quantification of gross P transformation rates rely on isotopic dilution principles. We developed a numerical 33P tracing model to quantify all relevant simultaneously occurring P transformation rates in soil. The tracing model com ...
... gross P transformation rates are known. Available techniques for the quantification of gross P transformation rates rely on isotopic dilution principles. We developed a numerical 33P tracing model to quantify all relevant simultaneously occurring P transformation rates in soil. The tracing model com ...
Lateral load capacity estimation of large diameter - E
... pure elastic condition the horizontal displacement of soil (be it in the direction of applied load or in the opposite face) and the pile are equal. The elastic analysis thus assumes that the soil behind the pile adheres to the pile at all times which is basically not correct. The elastic approach al ...
... pure elastic condition the horizontal displacement of soil (be it in the direction of applied load or in the opposite face) and the pile are equal. The elastic analysis thus assumes that the soil behind the pile adheres to the pile at all times which is basically not correct. The elastic approach al ...
Quantifying the impact of land degradation on crop
... variables referring to these conditions. There is a tradeoff here. The finer explanation will have fewer observations in every treatment class, but it will account for more variables, hopefully reducing the correlation of remaining unobserved variables with the treatment intensity (i.e. land degrada ...
... variables referring to these conditions. There is a tradeoff here. The finer explanation will have fewer observations in every treatment class, but it will account for more variables, hopefully reducing the correlation of remaining unobserved variables with the treatment intensity (i.e. land degrada ...
Evaluation of Alternative Causes of Widespread, Low Concentration
... levels for groundwater. Improper use (i.e., incomplete combustion or misfires) or poor housekeeping (i.e., exposure to oxygen or temperature during storage of bleach) can increase the levels of perchlorate found in the environment. Thus, it is critical that unused fireworks, flares, and explosives b ...
... levels for groundwater. Improper use (i.e., incomplete combustion or misfires) or poor housekeeping (i.e., exposure to oxygen or temperature during storage of bleach) can increase the levels of perchlorate found in the environment. Thus, it is critical that unused fireworks, flares, and explosives b ...
AÙp löïc chuû ñoäng vaø bò ñoäng cuûa ñaát rôøi Thay ñoåi tyû
... The Mohr-Coulomb failure criterion must be expressed in terms of effective stress, using effective parameters c’, ’. An effective stress analysis is always appropriate, irrespective of the drainage conditions. To perform an effective stress analysis the pore water pressures must be known. This usua ...
... The Mohr-Coulomb failure criterion must be expressed in terms of effective stress, using effective parameters c’, ’. An effective stress analysis is always appropriate, irrespective of the drainage conditions. To perform an effective stress analysis the pore water pressures must be known. This usua ...
35 crop yields along the toposequence of terraced andosols in
... the short and long rain seasons of 2013-2015 to assess the effect of terracing on crop yields. A randomized complete block design was used with maize and beans as the test crops. The study examined maize plant height, leaf area index (LAI), above ground biomass yields, number of bean pods and grain ...
... the short and long rain seasons of 2013-2015 to assess the effect of terracing on crop yields. A randomized complete block design was used with maize and beans as the test crops. The study examined maize plant height, leaf area index (LAI), above ground biomass yields, number of bean pods and grain ...
POTASSIUM - Agronomy - K
... solution phases, a shift of potassium from slowly available forms to readily available forms occurs. On the other hand, if the K+ ion concentration of the soil solution and exchange complex is increased by adding potassium fertilizer, the reverse is true. Some of the applied potassium may become tra ...
... solution phases, a shift of potassium from slowly available forms to readily available forms occurs. On the other hand, if the K+ ion concentration of the soil solution and exchange complex is increased by adding potassium fertilizer, the reverse is true. Some of the applied potassium may become tra ...
A Guide to Subsidence
... soils such as clay and silt vary in their ability to change their volume when wetted or dried (known as volumetric change), therefore when wet they will expand (swell) and when dry they will shrink. Clay soils are highly responsive to volumetric change owing to their molecular structure. Clays have ...
... soils such as clay and silt vary in their ability to change their volume when wetted or dried (known as volumetric change), therefore when wet they will expand (swell) and when dry they will shrink. Clay soils are highly responsive to volumetric change owing to their molecular structure. Clays have ...
Land Degradation - SAARC Agriculture Centre
... region, covers the processes adversely affecting productive capacity of land under different land use systems. Present paper reports the extent, type and severity of land degradation in south Asian countries. Impact of land degradation contributing factors including population and poverty, climate c ...
... region, covers the processes adversely affecting productive capacity of land under different land use systems. Present paper reports the extent, type and severity of land degradation in south Asian countries. Impact of land degradation contributing factors including population and poverty, climate c ...
GEO-SPATIAL MODELING OF RUNOFF OF LARGE LAND MASS
... September) runoff was 126 Mha-m over mainland of India during 2004. About 44 percent of total rainfall was converted into surface runoff. Month-wise runoff contribution was of 17%, 35%, 36% and 12% during June, July, August and September months, respectively in 2004. SCS model doesn’t take into acco ...
... September) runoff was 126 Mha-m over mainland of India during 2004. About 44 percent of total rainfall was converted into surface runoff. Month-wise runoff contribution was of 17%, 35%, 36% and 12% during June, July, August and September months, respectively in 2004. SCS model doesn’t take into acco ...
A global analysis of root distributions for terrestrial biomes
... (1996). Since R/S ratios sometimes change for systems over time (e.g., decreasing with canopy closure in forests), we emphasized data for mature vegetation. The model Gale and Grigal (1987) presented a model of vertical root distribution based on the following asymptotic equation: Y = 1-13d where Y ...
... (1996). Since R/S ratios sometimes change for systems over time (e.g., decreasing with canopy closure in forests), we emphasized data for mature vegetation. The model Gale and Grigal (1987) presented a model of vertical root distribution based on the following asymptotic equation: Y = 1-13d where Y ...
dasar ilmu tanah
... Bacteria dapat dikelompokkan menjadi empak kelompok fungsional. 1. Most are DECOMPOSERS That consume simple carbon compounds, such as root exudates and fresh plant litter. By this process, bacteria convert energy in soil organic matter into forms useful to the rest of the organisms in the soil food ...
... Bacteria dapat dikelompokkan menjadi empak kelompok fungsional. 1. Most are DECOMPOSERS That consume simple carbon compounds, such as root exudates and fresh plant litter. By this process, bacteria convert energy in soil organic matter into forms useful to the rest of the organisms in the soil food ...
here - Westshores Nurseries
... Symphyotrichum novae-angliae 'Harrington's Pink' [AGM] SYM25 Clump forming perennial with green leaves. Stout stems with attractive shell-pink flowers. Flowers from August to October. Height 1.2m ...
... Symphyotrichum novae-angliae 'Harrington's Pink' [AGM] SYM25 Clump forming perennial with green leaves. Stout stems with attractive shell-pink flowers. Flowers from August to October. Height 1.2m ...
a sustainable waste management solution and effective soil
... directly into the soil. Growers are now raising grafted plants in nurseries, often for up to eight months before they are planted out in an orchard setting. Grafting allows for stronger rootstock to be spliced onto a superior fruiting stem – thereby increasing plant strength and yield. However, this ...
... directly into the soil. Growers are now raising grafted plants in nurseries, often for up to eight months before they are planted out in an orchard setting. Grafting allows for stronger rootstock to be spliced onto a superior fruiting stem – thereby increasing plant strength and yield. However, this ...
Morphologic evidence of lamellae forming directly from
... The text above suggests that lamellae form at bedding planes, rather than from deformation of existing structures at bedding planes. The Soil Survey Staff also appears to suggest that clay bands should only be referred to as AlamellaeB after they have been affected by pedogenesis, in this case, by w ...
... The text above suggests that lamellae form at bedding planes, rather than from deformation of existing structures at bedding planes. The Soil Survey Staff also appears to suggest that clay bands should only be referred to as AlamellaeB after they have been affected by pedogenesis, in this case, by w ...
UMAXX® StAbilized NitrogeN
... ©2013 Koch Agronomic Services, LLC. UMAXX® is a registered trademark of Koch Agronomic Services, LLC. UMAXX® stabilized nitrogen is manufactured and sold by Koch Agronomic Services, LLC under an exclusive license from The Mosaic Company. Neither the individual nor University researchers referred to ...
... ©2013 Koch Agronomic Services, LLC. UMAXX® is a registered trademark of Koch Agronomic Services, LLC. UMAXX® stabilized nitrogen is manufactured and sold by Koch Agronomic Services, LLC under an exclusive license from The Mosaic Company. Neither the individual nor University researchers referred to ...
Guidance on the use of BSI PAS 100 compost in topsoil
... The purpose of topsoil manufacturing is to create an effective soil for the establishment of vegetation. The term topsoil manufacturing, as used in this technical document, refers to the blending of soils available on site along with potentially other organic or inorganic materials with BSI PAS 100 ...
... The purpose of topsoil manufacturing is to create an effective soil for the establishment of vegetation. The term topsoil manufacturing, as used in this technical document, refers to the blending of soils available on site along with potentially other organic or inorganic materials with BSI PAS 100 ...
FAU Institutional Repository
... full depth of 19 em served as an unstratified control. After an artificial halocline was established, we waited 15 min, then sampled water from the 2 layers to determine if the desired stratification had been achieved. If salinity measurements indicated that too much mixing had occurred, we discarde ...
... full depth of 19 em served as an unstratified control. After an artificial halocline was established, we waited 15 min, then sampled water from the 2 layers to determine if the desired stratification had been achieved. If salinity measurements indicated that too much mixing had occurred, we discarde ...
environmental filtering of enzymatic activities
... As other fungi, ectomycorrhizal (ECM) fungi release extracellular enzymes to break down macromolecules—for example, nucleic acids, phenols and chitin. Activity of several enzymes can be directly measured on ECM root tips using standardized assays (Pritsch et al. 2011). Functional traits are measurab ...
... As other fungi, ectomycorrhizal (ECM) fungi release extracellular enzymes to break down macromolecules—for example, nucleic acids, phenols and chitin. Activity of several enzymes can be directly measured on ECM root tips using standardized assays (Pritsch et al. 2011). Functional traits are measurab ...
Tree-ring elemental concentrations in oak do not necessarily
... common time period at the site will be between 0 and 1 and those outside the common time period may be outside that range. Normalizing each core to a dimensionless unit also has the advantage that if the entire core is measured in a single laser ablation run without changing tune parameters and resu ...
... common time period at the site will be between 0 and 1 and those outside the common time period may be outside that range. Normalizing each core to a dimensionless unit also has the advantage that if the entire core is measured in a single laser ablation run without changing tune parameters and resu ...
Improving Cover Crops with Crimson Clover
... SEED INOCULATION: Crimson clover roots need to be colonized by rhizobia bacteria to be able to convert atmospheric N into plant available forms. Crimson clover fixes more N and produces more biomass if inoculated with the proper rhizobia bacteria. Inoculate the seed prior to planting with the rhizob ...
... SEED INOCULATION: Crimson clover roots need to be colonized by rhizobia bacteria to be able to convert atmospheric N into plant available forms. Crimson clover fixes more N and produces more biomass if inoculated with the proper rhizobia bacteria. Inoculate the seed prior to planting with the rhizob ...
The Agricultural Science and Technology Curriculum Guides are the
... The Agricultural Science and Technology Curriculum Guides are the product of many years of careful planning and development. In 1987, an Agricultural Education Technical Committee was assembled to determine the competencies necessary to prepare students for careers in agriculture. In 1989, a committ ...
... The Agricultural Science and Technology Curriculum Guides are the product of many years of careful planning and development. In 1987, an Agricultural Education Technical Committee was assembled to determine the competencies necessary to prepare students for careers in agriculture. In 1989, a committ ...
Agricultural and Environmental Applications of Biochar: Advances
... management. But there are still technological hurdles and socio-economic challenges, in part because the benefits of biochar materials remain inadequately defined and quantified. The Soil Science Society of America promotes good science and practice related to soils and believes that the application ...
... management. But there are still technological hurdles and socio-economic challenges, in part because the benefits of biochar materials remain inadequately defined and quantified. The Soil Science Society of America promotes good science and practice related to soils and believes that the application ...
Soil salinity control
Soil salinity control relates to controlling the problem of soil salinity and reclaiming salinized agricultural land.The aim of soil salinity control is to prevent soil degradation by salination and reclaim already salty (saline) soils. Soil reclamation is also called soil improvement, rehabilitation, remediation, recuperation, or amelioration.The primary man-made cause of salinization is irrigation. River water or groundwater used in irrigation contains salts, which remain behind in the soil after the water has evaporated.The primary method of controlling soil salinity is to permit 10-20% of the irrigation water to leach the soil, be drained and discharged through an appropriate drainage system. The salt concentration of the drainage water is normally 5 to 10 times higher than that of the irrigation water, thus salt export matches salt import and it will not accumulate.