نتایج جستجو برای: loam soil sunflower

تعداد نتایج: 188351  

2010
B. Sizirici

The purpose of this study was to analyze the migration pathways of contaminants from closed landfills and to estimate health risks based on soil characteristics. The health risks were estimated using Framework for Risk Analysis Multimedia Environmental Systems (FRAMES) software. The sensitivity of human health risks and hazard indices due to vinyl chloride contamination in groundwater were perf...

2013
Maria Swarcewicz Andrzej Gregorczyk Justyna Sobczak

It is widely recognised that complex interactions occur between chemicals in mixtures. In many agricultural situations, the use of tank mixes and complex spray programs is a common practice. Insecticides, fungicides and a herbicide being applied in potato protection were used in this research. Interactions between linuron and insecticides, such as thiamethoxam or clothianidin, and fungicides, s...

ژورنال: علوم آب و خاک 2011
الهام نبی‌زاده, , حبیب الله بیگی هرچگانی, ,

Selecting an appropriate particle size distribution (PSD) model for a particular soil may be important for a precise estimation of soil hydraulic properties. Various models have been proposed for describing soil PSDs. The objective of this study was to compare the quality of fitting of eight PSD models (Fredlund, Gompertz, van Genuchten, Jaki, Logarithmic, Exponential, Logarithmic-Exponential a...

2018
Eric Schultz Thomas DeSutter Lakesh Sharma Gregory Endres Roger Ashley Honggang Bu Samuel Markell David Franzen

1 Sunflower (Helianthus annuus L.) is native to North America. American natives first cultivated sunflower 5000 yr ago in the present-day southwest United States (Semeslczi-Kovacs, 1975). Sunflower spread to the north and east in North America, where it was domesticated 4000 yr ago (Blackman et al., 2011). Sunflower is a relatively new commercial crop to the United States, with commercial culti...

Journal: :Journal of environmental quality 2002
P L Preusch P R Adler L J Sikora T J Tworkoski

Poultry litter applications to land have been based on crop N requirements, resulting in application of P in excess of plant requirements, which may cause degradation of water quality in the Chesapeake Bay watershed. The effect of litter source (the Delmarva Peninsula and Moorefield, West Virginia) and composting of poultry litter on N mineralization and availability of P in two soil types (san...

ژورنال: علوم آب و خاک 2004
حمیدرضا فولادمند, , علیرضا سپاسخواه, , جانب‌اله نیازی, ,

To obtain soil-moisture characteristic curve experimentally is time-consuming and usually subject to considerable errors. So, many investigators have tried to predict soil-moisture characteristic curve by different models. One of these models predicts soil moisture characteristic curve based on soil particle size distribution and bulk density. In this model, soil particle size distribution curv...

حمیدرضا فولادمند, , علیرضا سپاسخواه, , جانب‌اله نیازی, ,

To obtain soil-moisture characteristic curve experimentally is time-consuming and usually subject to considerable errors. So, many investigators have tried to predict soil-moisture characteristic curve by different models. One of these models predicts soil moisture characteristic curve based on soil particle size distribution and bulk density. In this model, soil particle size distribution curv...

Journal: :Bioresource technology 2006
Peter J Martin William Stephens

The growth and biomass production by willow (Salix viminalis L.) was studied in lysimeters containing Oxford clay landfill cap soil with different amendments, bulk densities and watering regimes. Three years from planting, stem biomass in well-watered plants was least (0.28 kg plant(-1)) with high bulk density soil (1480 kg m(-3)) and no nutritional amendment but was increased 10-fold (2.53 kg ...

Journal: :Agriculture 2022

Zeolites can be extensively employed in agricultural activities because they improve soil properties such as infiltration rates, saturated hydraulic conductivity, water holding capacity, and cation exchange capacity. Natural synthetic zeolites efficiently hold water. are also believed to have the ability lose gain reversibly, without changing their crystal structure. In present study, several l...

Journal: :آب و خاک 0
قهرمان قهرمان داوری داوری آستارایی آستارایی مجیدی مجیدی تمسکی تمسکی

abstract irrigation planning and management requires continious monitoring and measurements of soil moisture content. application of gypsum blockes (gb) are common in soil moisture measurements. gb readings are subjected to its geometry and soil solution concentration. this study was carried on 90 gb in research greenhouse of faculty agricultural, ferdowsi university of mashhad. at the begining...

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