Effect of Biochar on NH3 Volatilization and N2O Emission in Brown Soil

2015 ◽  
Vol 1092-1093 ◽  
pp. 1229-1233 ◽  
Author(s):  
Xiao Yi Cheng ◽  
Yu Lan ◽  
Zun Qi Liu ◽  
Xiao Lin Liu ◽  
Xu Yang ◽  
...  
Keyword(s):  
Soil Nitrogen ◽  
Nitrogen Fertilizer ◽  
Gas Chromatograph ◽  
Brown Soil ◽  
Static Chamber ◽  
N Transformation ◽  
Reduced Nitrogen ◽  
Gaseous Loss ◽  
Chamber Gas

In this study, we investigated the effect of biochar on NH3volatilization and N2O emission in brown soil by using enclosed acid absorbing method and static chamber-gas chromatograph method. The results showed that without fertilizing, there was no significant effect of biochar effect on NH3volatilization and N2O emissions but if biochar was combined with urea, a dramatic mitigation of which could be found. Biochar application was supposed to regulate urea-N transformation more easily than soil nitrogen. Under the conditions of this experiment, both NB20 (20 t·hm-2of biochar and conventional nitrogen fertilizer applied) and NB40 (40 t·hm-2of biochar and conventional nitrogen fertilizer applied) treatments reduced NH3volatilization and N2O emissions significantly. By contrast of NB0 (single urea), the accumulated NH3volatilization and N2O emissions of NB20 and NB40 decreased by 15.6% and 24.4% and by 21.76% and 19.56% respectively. Under conventional fertilization conditions (NB0), 10.35% of nitrogen in fertilizer was lost in the form of NH3and N2O, and compared with NB0, NB20 and NB40 reduced nitrogen gaseous loss from fertilizer by 2.76% and 4.12% respectively.

NITROGEN CYCLES IN CROP ROTATIONS DIFFERING IN FERTILIZATION

2015 ◽  
Author(s):  
Saulius GUŽYS ◽  
Stefanija MISEVIČIENĖ
Keyword(s):  
Crop Rotation ◽  
Soil Nitrogen ◽  
Nitrogen Fertilizer ◽  
Nitrogen Balance ◽  
Mineral Soil ◽  
Crop Productivity ◽  
Drainage Water ◽  
Perennial Grasses ◽  
Crop Rotations ◽  
Cereal Crop

The use of nitrogen fertilizer is becoming a global problem; however continuous fertilization with nitrogen ensures large and constant harvests. An 8 year research (2006–2013) was conducted to evaluate the relationships between differently fertilized cultivated plant rotations. The research was conducted in Lipliunai (Lithuania) in the agroecosystem with nitrogen metabolism in fields with deeper carbonaceous soil, i.e. Endocalcari Endohypogleyic Cambisol (CMg-n-w-can). The research area covered three drained plots where crop rotation of differently fertilized cereals and perennial grasses was applied. Samples of soil, water and plants were investigated in the Chemical Analysis Laboratory of the Aleksandras Stulginskis University certified by the Environment Ministry of the Republic of Lithuania. The greatest productivity was found in a crop rotation with higher fertilization (N32-140). In crop rotation with lower fertilization (N24-90) productivity of cereals and perennial grasses (N0-80) was 11–35 % lower. The highest amount of mineral soil nitrogen was found in cereal crop rotation with higher fertilization. It was influenced by fertilization and crop productivity. The lowest Nmin and Ntotal concentrations in drainage water were found in grasses crop rotation. Crop rotations of differently fertilized cereals increased nitrogen concentration in drainage water. Nmin concentration in water depended on crop productivity, quantity of mineral soil nitrogen, fertilization, and nitrogen balance. The lowest nitrogen leaching was found in the crop rotation of grasses. Cereal crop rotation increased nitrogen leaching by 12–42 %. The usage of all crop rotations resulted in a negative nitrogen balance, which essentially depended on fertilization with nitrogen fertilizer.

scholarly journals The consumption of nitrogen of perennial legume-grass mixture on the second year of life (study with 15n)

2019 ◽  
pp. 36-38
Author(s):  
N. Ya. Shmyreva ◽  
A. A. Zavalin ◽  
O. A. Sokolov ◽  
V. A. Litvinsky
Keyword(s):  
Crop Rotation ◽  
Soil Nitrogen ◽  
Nitrogen Fertilizer ◽  
Podzolic Soil ◽  
Local Application ◽  
Life Study ◽  
Second Year Of Life ◽  
Second Year ◽  
Perennial Legume

On the eroded sod-podzolic soil of the drive-separated part of the slope in the 3rd rotation of the crop rotation, the consumption of nitrogen fertilizer by herbs increases by 20%, soil nitrogen by 67%, and symbiotic by 23% compared to its lower part. This reduces the immobilization of nitrogen fertilizer, and increase its gaseous losses. Localization of nitrogen fertilizer increases grass consumption of nitrogen fertilizer by 14%, soil nitrogen by 7-10% and symbiotic nitrogen by 26-53% compared to the scattered method of its application. With local application of nitrogen fertilizer grass better (1.1-1.2 times) use nitrogen fertilizer, it is more (1.1-1.2 times) is fixed in the soil and less (1.6-2.6 times) is lost in the form of gaseous compounds compared to the scattered method of its application. This increases the productivity of herbs by 6-11%, the content of raw protein in the phytomass by 0.3-1.1% and reduces the amount of nitrates by 7-16%.

NITROGEN FLOWS IN AGROPHYTOCENOSIS ON SODDY-PODZOLIC SOIL (research with 15n )

1970 ◽  
pp. 17-21
Author(s):  
А. А. Zavalin ◽  
О. А. Sokolov ◽  
N. Ya. Shmyreva
Keyword(s):  
Soil Nitrogen ◽  
Nitrogen Fertilizer ◽  
Podzolic Soil ◽  
Maximum Yield ◽  
Mineral Fertilizer ◽  
Soddy Podzolic Soil ◽  
Nitrogen Fertilizers ◽  
Cereal Crops ◽  
Stress Mode ◽  
Nitrogen Flows

Micro-field experiment was carried out with the application of oats and timothy biomass, and nitrogen fertilizer marked by stable isotope of the 15N, and manure for the use of nitrogen by plants, and the flows of this element were analyzed in the system "fertilizer -soil-atmosphere". It was found that the barley consumes the most amount fertilizer nitrogen and soil nitrogen when applying a nitrogen mineral fertilizer; the consumption of the oats and timothy nitrogen biomass decreases by 18-36% and 6-36% respectively. Application of the oats and timothy biomass increases nitrogen immobilization in the soil and agrophytocenose resistance from 1.6 to 1.8 times, decreases gaseous losses of their nitrogen from 1.4 to 2.0 times in comparison with nitrogen fertilizer (stress mode). Manure application decreases nitrogen losses from the oats and timothy biomass by 1.6 times. Maximum yield of grain the barley forms when using nitrogen fertilizer as a result of its access in the soil. Application the cereal crops biomass either separately, or along with manure reduces the yield of barley by 30-13% compared with nitrogen fertilizers, which affect nitrogen flows in the agroecosystem.

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