نتایج جستجو برای: fine loamy mixed

تعداد نتایج: 327846  

2012
Jian Liu Helena Aronsson Lars Bergström Andrew Sharpley

Appropriate management of animal waste is essential for guaranteeing good water quality. A laboratory leaching study with intact soil columns was performed to investigate the risk of phosphorus (P) leaching from a clay loam and a loamy sand. The columns (0.2 m deep) were irrigated before and after application of pig slurry on the surface or after incorporation, or application of mineral P, each...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه شیراز 1378

فسفر و آهن از عناصر غذایی مورد نیاز گیاهان می باشند. در خاکهای آهکی ایران به دلیل وفور کربنات کلسیم و نیز پ هاش بالا، قابلیت استفاده آهن کم می باشد. همچنین مصرف بیش از مقدار نیاز کودهای فسفردار ممکن است قابلیت استفاده از آهن را کاهش داده و سبب تجمع فسفر در گیاه در حد ایجاد سمیت شود. هدف از این مطالعه ارزیابی گلخانه ای تاثیر فسفر و آهن بر رشد و ترکیب شیمیایی ذرت (zea mays l.) و سویا (glycine max...

A.R. Sepaskhah, C.R. Jensen F. Plauborg M.N. Andersen P.E. Lærke S. Hansen S.H. Ahmadi,

Nitrogen (N) uptake (kg ha-1) of field-grown potatoes was measured in 4.32 m2 lysimeters that were filled with coarse sand, loamy sand, and sandy loam and subjected to full (FI), deficit (DI), and partial root-zone drying (PRD) irrigation strategies. PRD and DI as water-saving irrigation treatments received 65% of FI after tuber bulking and lasted for six weeks until final harvest. Results show...

Journal: :Forests 2022

In urban environments, newly planted street trees suffer from poor site conditions and limited water availability. It is challenging to provide that allow the thrive in long term, particularly under climate change. Knowledge about hydrological properties of artificial planting soils related response tree species-specific growth crucial, but still lacking. Therefore, we established a three-year ...

Journal: :IOP conference series 2023

Abstract The combination effect of fine-metakaolin (FMK) and coal bottom ash (CBA) as cement fine aggregate replacement in seawater-concrete was investigated to reduce environmental issues such carbon emission, global warming, insufficient water resource. Optimum percentages 10%, 20% 30% determined Stage 1 through compression strength test. 2 involved testing on mixture with FMK obtained 20%, 3...

Journal: :Journal of the Japan Society of Engineering Geology 1971

Journal: :Buildings 2023

The number of scrap tires discarded worldwide is increasing annually. Stockpiling these not a viable option due to environmental concerns and space limitations. Landfilling likewise unacceptable permitted in many areas. Recycling the best alternative. Shredding create product known as tire-derived aggregate (TDA) one most environmentally friendly methods recycling tires. In past few decades, TD...

2013

A study was conducted in the alluvial soils located in Oko-anala in Delta State, Nigeria. These alluvial soils are primarily used for intensive vegetable production for commercial purposes. The total land area of about 3.34 Square kilometer was divided into three consociations and composite soil samples collected from pre-determined depths of 0-15 and 16-30cm. The samples were routinely prepare...

2005
S. S.

Various soil texture schemes are in current use. These differ in the size ranges of their particle fractions. There is a need to establish simple methods to correlate these conventional schemes. Therefore I have defined closed-form exponential and power law functions to fit models to cumulative particle-size distribution data. I have tested the functions for their suitability (i) to represent c...

2016
Shawn Dayson Shifflett Dennis W. Hazel Elizabeth Guthrie Nichols

This study reports the stem volume of 10 Populus genotypes in a randomized split-plot design with different tillage treatments (disking versus sub-soiling) after two years of growth. Height, diameter at breast height (DBH), stem aboveground volume index, survival, Melampsora rust resistance, leaf area index (LAI), chlorophyll content, and foliar nitrogen concentration (Foliar N) were measured t...

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