نتایج جستجو برای: coated urea scu

تعداد نتایج: 84847  

Journal: :Frontiers in agronomy 2022

The objective of the study was to evaluate fertilizing potential two arbuscular mycorrhizal fungi ( Glomeraceae and Acaulosporaceae ) native rhizosphere soils Benin in a controlled environment (under greenhouse) field environment. For this purpose, corn seeds were coated with strains then deposited 5 cm deep holes. Different doses mineral fertilizer applied according treatments.The experimental...

Journal: :Journal of Environmental Quality 2021

Abstract Fertilizer applications on lawns have raised environmental concerns in many Canadian municipalities. In this greenhouse study, NO 3 –N leaching losses from Kentucky bluegrass ( Poa pratensis L.) were evaluated two soils (a schist loam and a clay loam) sand/peat moss rootzone mix (80% sand, 20% peat moss). Eight different fertilizer N sources (urea, Polyon 8 12‐wk release, Duration 45 9...

Journal: :Civil Engineering Journal 2022

Due to its high organic matter, moisture content, and low bearing capacity, peat soil needs be stabilized for use as a subgrade. The soybean crude urease calcite precipitation (SCU-CP) method is grouting technique using carbonate biocatalyst. This study aims analyze the effect of SCU-CP density on California ratio (CBR) value obtain best stabilization alternative reducing field’s compaction ene...

Journal: :Crop Science 2021

Abstract Turfgrass with sand‐based root zones, such as golf course putting greens, are highly important economically and require intense management. However, problems often associated low nutrient retention limited microbial activity. Soil additives may increase soil biological activity, improve nitrogen (N) cycling efficiency, thus reduce fertilizer N inputs. A 2‐yr experiment was conducted on...

2017
Cheng-Yuan (Kevin) Lai Peter J. S. Foot John W. Brown Peter Spearman

A potentiometric enzyme biosensor is a convenient detector for quantification of urea concentrations in industrial processes, or for monitoring patients with diabetes, kidney damage or liver malfunction. In this work, poly(3-hexylthiophene-co-3-thiopheneacetic acid) (P(3HT-co-3TAA)) was chemically synthesized, characterized and spin-coated onto conductive indium tin oxide (ITO) glass electrodes...

Journal: :Journal of Coatings Technology and Research 2022

Abstract Two polyester-lignite composite coated urea slow-release fertilizers (SRFs; Poly3 and Poly5) were developed their physicochemical properties studied. Both these SRFs significantly (p < 0.05) extended the release compared to uncoated urea; Poly5 by 117 172 h, respectively. The characteristics of further enhanced linseed oil application (Poly5-linseed). SEM images demonstrated coating...

2015
Panfang Lu Yanfei Zhang Cong Jia Chongji Wang Xiao Li Min Zhang

A new controlled release fertilizer was developed by coating urea particles with bio-based polyurethane. Coating materials were synthesized from liquefied wheat straw, isocyanate, and castor oil. The effects of liquefied solvents, mass ratio of liquid to solid, size of wheat straw, and reaction time during liquefaction process on the nitrogen release rate of polyurethane-coated urea (PCU) were ...

2014
G. Brett

Use of enhanced-efficiency N fertilizers (EENFs) in row crop agriculture has not been well studied despite increasing interest in these N sources to increase crop yield while decreasing N loss. A field study was conducted in Central Alabama from 2009 to 2011 to compare EENFs to standard N sources in a high-residue conservation cotton production system. Nitrogen fertilizers evaluated were: urea;...

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