Organic Production Systems Guidelines
... The information presented in this report aims to provide conventional growers, unfamiliar with organic farming and certification, sufficient detail to consider the various changes that may be required to current farming practices when assessing the feasibility of conversion to an organic system. The ...
... The information presented in this report aims to provide conventional growers, unfamiliar with organic farming and certification, sufficient detail to consider the various changes that may be required to current farming practices when assessing the feasibility of conversion to an organic system. The ...
Read the e-book - KIS - University of Saskatchewan
... In the Beginning As is the case with all transformative technologies, zero-tillage had its beginnings with new information, in this case new information about the causes of soil and water erosion and how they could be addressed. Everyone, however, did not immediately accept this new information. Far ...
... In the Beginning As is the case with all transformative technologies, zero-tillage had its beginnings with new information, in this case new information about the causes of soil and water erosion and how they could be addressed. Everyone, however, did not immediately accept this new information. Far ...
Land Degradation - SAARC Agriculture Centre
... Land degradation is a concept in which the value of bio-physical environment is adversely affected. Deforestation, nutrients depletion, overgrazing, irrigation and over drafting, urban sprawl and commercial development, land pollution are the causes of degradation. Land vulnerable to degradation was ...
... Land degradation is a concept in which the value of bio-physical environment is adversely affected. Deforestation, nutrients depletion, overgrazing, irrigation and over drafting, urban sprawl and commercial development, land pollution are the causes of degradation. Land vulnerable to degradation was ...
Reduced Tillage Systems for Heavy Coastal Clay Soils
... During 2004, two trials were established at Le Ressouvenir, La Bonne Intention estate, in the first and second crops respectively. The first trial was established at LR 29 and 31 during the first crop in March 2004, while the second trial was established at LR 11 to 27 during the second crop in Nove ...
... During 2004, two trials were established at Le Ressouvenir, La Bonne Intention estate, in the first and second crops respectively. The first trial was established at LR 29 and 31 during the first crop in March 2004, while the second trial was established at LR 11 to 27 during the second crop in Nove ...
A developed procedure for predicting the risk of liquefaction: A case
... deposits in Rasht city on the surface and at different depths, the best way to evaluate the characteristics of liquefaction in the city is by data collection. For this purpose, conducted reports and geotechnical studies in Rasht city on construction projects, such as private buildings, administrativ ...
... deposits in Rasht city on the surface and at different depths, the best way to evaluate the characteristics of liquefaction in the city is by data collection. For this purpose, conducted reports and geotechnical studies in Rasht city on construction projects, such as private buildings, administrativ ...
Potential Role for the Vetiver System in Gulf Coast
... Vetiver grass has a massive, finely structured root system that is unique among grasses. With no rhizomes or stolons that spread to the sides, the plant’s roots grow straight down as a mass as dense as the amount of leaves it produces above the ground. These roots penetrate 3 to 4 meters into the so ...
... Vetiver grass has a massive, finely structured root system that is unique among grasses. With no rhizomes or stolons that spread to the sides, the plant’s roots grow straight down as a mass as dense as the amount of leaves it produces above the ground. These roots penetrate 3 to 4 meters into the so ...
Direct Seeding Mulch-Based Cropping Systems (DMC)
... issues—desertification, biodiversity loss, global warming—humankind must absolutely modify its ‘environment-unfriendly’ practices, especially in agriculture. The negative impacts of conventional agricultural practices are well known (land degradation, soil erosion, decline in biodiversity, pollution ...
... issues—desertification, biodiversity loss, global warming—humankind must absolutely modify its ‘environment-unfriendly’ practices, especially in agriculture. The negative impacts of conventional agricultural practices are well known (land degradation, soil erosion, decline in biodiversity, pollution ...
Fertilizer Primer - College of Agricultural and Life Sciences
... soils. Other materials such as manure, sewage sludge, and some industrial wastes also can satisfy the nutrient needs of crops. In many situations, factors such as accessibility and transportation costs result in commercially manufactured fertilizers providing the most economic means of improving soi ...
... soils. Other materials such as manure, sewage sludge, and some industrial wastes also can satisfy the nutrient needs of crops. In many situations, factors such as accessibility and transportation costs result in commercially manufactured fertilizers providing the most economic means of improving soi ...
Revisiting agro-ecological sub-regions of India – a
... similar in soil bioclimate and length of moisture availability period related to crop production, are known as agro-ecological regions (AERs)7. FAO’s exercises concentrated on creation of broad crop feasibility zones based on length of moisture availability period superimposed on FAO/UNESCO global s ...
... similar in soil bioclimate and length of moisture availability period related to crop production, are known as agro-ecological regions (AERs)7. FAO’s exercises concentrated on creation of broad crop feasibility zones based on length of moisture availability period superimposed on FAO/UNESCO global s ...
Technical Digest - The National Lime Association
... lime companies and from other publications. ...
... lime companies and from other publications. ...
POTASSIUM - Agronomy - K
... Potassium is a nutrient that plants absorb in amounts far in excess of their requirements if readily if available. While this is also true for some other nutrients, potassium is outstanding in this respect. Therefore, excess amounts applied infrequently result in ‘luxury consumption’ of applied pota ...
... Potassium is a nutrient that plants absorb in amounts far in excess of their requirements if readily if available. While this is also true for some other nutrients, potassium is outstanding in this respect. Therefore, excess amounts applied infrequently result in ‘luxury consumption’ of applied pota ...
Field Handbook for Saskatchewan Soils
... rapidly in relation to supply. Excess water flows downward very rapidly if underlying material is pervious. There may be very rapid subsurface flow during heavy rainfall provided there is a steep gradient. Soils are usually coarse textured, or shallow, or both. Water source is precipitation. Well to ...
... rapidly in relation to supply. Excess water flows downward very rapidly if underlying material is pervious. There may be very rapid subsurface flow during heavy rainfall provided there is a steep gradient. Soils are usually coarse textured, or shallow, or both. Water source is precipitation. Well to ...
Monitoring soil erosion in South Africa at a regional scale
... probability for deposition (Liu et al., 2000). Soil creep upslope (due to rainsplash erosion) gives way first to interrill erosion (due to broad overland flow) and then to rill erosion further downslope (due to concentrated flow). Therefore, the presence or absence of rill erosion and the density of ...
... probability for deposition (Liu et al., 2000). Soil creep upslope (due to rainsplash erosion) gives way first to interrill erosion (due to broad overland flow) and then to rill erosion further downslope (due to concentrated flow). Therefore, the presence or absence of rill erosion and the density of ...
Predicting soil water repellency using hydrophobic organic
... also the type of SWR markers affect the severity of SWR (Contreras et al., 2008; de Blas et al., 2013). The severity of SWR significantly varies depending on vegetation species and soil depths (Doerr et al., 2002, 2005; Buczko et al., 2005; de Blas et al., 2010, 2013; Neris et al., 2012; Mao et al., ...
... also the type of SWR markers affect the severity of SWR (Contreras et al., 2008; de Blas et al., 2013). The severity of SWR significantly varies depending on vegetation species and soil depths (Doerr et al., 2002, 2005; Buczko et al., 2005; de Blas et al., 2010, 2013; Neris et al., 2012; Mao et al., ...
View Full Text-PDF
... due to the compaction caused by the rotavator and intensive tillage in case of farmer s practice. It was also found that the bulk density at all the layers under rotavator was generally higher than the conventional tillage and Happy Seeder sown field at all the locations of Jalandhar, Kapurthala, Fa ...
... due to the compaction caused by the rotavator and intensive tillage in case of farmer s practice. It was also found that the bulk density at all the layers under rotavator was generally higher than the conventional tillage and Happy Seeder sown field at all the locations of Jalandhar, Kapurthala, Fa ...
Phosphorus retention in forest soils and the functioning of
... Phosphorus (P) retention properties of soils typical for boreal forest, i.e. podzolic soil and peat soils, vary significantly, but the range of this variation has not been sufficiently documented. To assess the usefulness of buffer zones used in forestry in removing P from the discharge by chemical ...
... Phosphorus (P) retention properties of soils typical for boreal forest, i.e. podzolic soil and peat soils, vary significantly, but the range of this variation has not been sufficiently documented. To assess the usefulness of buffer zones used in forestry in removing P from the discharge by chemical ...
Morphologic evidence of lamellae forming directly from
... 5. Results and discussion The lower part of the dune, within the C horizon, consists of perfectly laminar, bedded sand with thin, interbedded, clay-enriched strata of obvious geologic origin ŽFig. 3A and B.. These strata are usually less than 3 mm in thickness, and contain 3.0–5.4% clay. The cleaner ...
... 5. Results and discussion The lower part of the dune, within the C horizon, consists of perfectly laminar, bedded sand with thin, interbedded, clay-enriched strata of obvious geologic origin ŽFig. 3A and B.. These strata are usually less than 3 mm in thickness, and contain 3.0–5.4% clay. The cleaner ...
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 ...
Lateral load capacity estimation of large diameter - E
... soil condition, pile rigidity and fixed end conditions ofthe pile is the limit under different pile upto which lateral deflection of the pile at the ground surface/pilecap level (as the case may be) can be permitted. It is not to be the ultimate lateral load resistance ofthe pile, considering a tota ...
... soil condition, pile rigidity and fixed end conditions ofthe pile is the limit under different pile upto which lateral deflection of the pile at the ground surface/pilecap level (as the case may be) can be permitted. It is not to be the ultimate lateral load resistance ofthe pile, considering a tota ...
Conference for Soil Classification Lincoln, NE, USA June 12, 2012
... the world. In the Canadian system and in the US Soil Taxonomy soils of the world are divided into those with permafrost and other soils. In WRB system permafrost‐affected soils are also very high. In Chinese and Russian classification systems the permafrost are recognized only on the ...
... the world. In the Canadian system and in the US Soil Taxonomy soils of the world are divided into those with permafrost and other soils. In WRB system permafrost‐affected soils are also very high. In Chinese and Russian classification systems the permafrost are recognized only on the ...
Appendix 6 - Potato seed system development WA
... disease freedom, high quality seed potatoes need to be free from bruising. Bruising and mechanical damage caused during harvesting increases tuber susceptibility to breakdown and can lead to rots in storage and poor seed piece performance. The increased susceptibility to disease is due to the cut su ...
... disease freedom, high quality seed potatoes need to be free from bruising. Bruising and mechanical damage caused during harvesting increases tuber susceptibility to breakdown and can lead to rots in storage and poor seed piece performance. The increased susceptibility to disease is due to the cut su ...
Agricultural and Environmental Applications of Biochar: Advances
... dark soil Terra Preta has kindled worldwide research and application of charcoal in agriculture for long-term soil conditioning and fertility enhancement. As climate change and food security become eye-catching challenges that may devastate the sustainability of the natural environment and the human ...
... dark soil Terra Preta has kindled worldwide research and application of charcoal in agriculture for long-term soil conditioning and fertility enhancement. As climate change and food security become eye-catching challenges that may devastate the sustainability of the natural environment and the human ...
A European morpho-functional classification of humus forms
... varying size (droppings of epigeic earthworms, of macroarthropods such as millipedes, woodlice and insect larvae, of microarthropods such as mites and springtails and of enchytraeids dominate). Within organo-mineral horizons, animal activity leads to different types of A horizons, depending on the a ...
... varying size (droppings of epigeic earthworms, of macroarthropods such as millipedes, woodlice and insect larvae, of microarthropods such as mites and springtails and of enchytraeids dominate). Within organo-mineral horizons, animal activity leads to different types of A horizons, depending on the a ...
Agricultural and Environmental Applications of Biochar: Advances
... dark soil Terra Preta has kindled worldwide research and application of charcoal in agriculture for long-term soil conditioning and fertility enhancement. As climate change and food security become eye-catching challenges that may devastate the sustainability of the natural environment and the human ...
... dark soil Terra Preta has kindled worldwide research and application of charcoal in agriculture for long-term soil conditioning and fertility enhancement. As climate change and food security become eye-catching challenges that may devastate the sustainability of the natural environment and the human ...
Soil respiration
Soil respiration refers to the production of carbon dioxide when soil organisms respire. This includes respiration of plant roots, the rhizosphere, microbes and fauna.Soil respiration is a key ecosystem process that releases carbon from the soil in the form of CO2. CO2 is acquired from the atmosphere and converted into organic compounds in the process of photosynthesis. Plants use these organic compounds to build structural components or respire them to release energy. When plant respiration occurs below-ground in the roots, it adds to soil respiration. Over time, plant structural components are consumed by heterotrophs. This heterotrophic consumption releases CO2 and when this CO2 is released by below-ground organisms, it is considered soil respiration.The amount of soil respiration that occurs in an ecosystem is controlled by several factors. The temperature, moisture, nutrient content and level of oxygen in the soil can produce extremely disparate rates of respiration. These rates of respiration can be measured in a variety of methods. Other methods can be used to separate the source components, in this case the type of photosynthetic pathway (C3/C4), of the respired plant structures.Soil respiration rates can be largely affected by human activity. This is because humans have the ability to and have been changing the various controlling factors of soil respiration for numerous years. Global climate change is composed of numerous changing factors including rising atmospheric CO2, increasing temperature and shifting precipitation patterns. All of these factors can affect the rate of global soil respiration. Increased nitrogen fertilization by humans also has the potential to effect rates over the entire Earth.Soil respiration and its rate across ecosystems is extremely important to understand. This is because soil respiration plays a large role in global carbon cycling as well as other nutrient cycles. The respiration of plant structures releases not only CO2 but also other nutrients in those structures, such as nitrogen. Soil respiration is also associated with positive feedbacks with global climate change. Positive feedbacks are when a change in a system produces response in the same direction of the change. Therefore, soil respiration rates can be effected by climate change and then respond by enhancing climate change.