scholarly journals CHANGE OF HUMUS STATUS IN CASES OF INTENSIVE CULTIVATED SOIL

2018 ◽  
Vol 8 (4) ◽  
pp. 777-784
Author(s):  
Svetlana Yurevna Zorina ◽  
◽  
Lada Georgievna Sokolova
Keyword(s):  
Cultivated Soil ◽  
Humus Status

INFLUENCE OF CULTIVATION DEGREE OF SOD-PODZOLIC SOIL ON RESPONSIVENESS OF SOWING PEAS TO NITROGEN NUTRITION LEVEL

2020 ◽  
Keyword(s):  
Podzolic Soil ◽  
Nitrogen Nutrition ◽  
Maximum Yield ◽  
Mineral Nitrogen ◽  
Degree Of Saturation ◽  
Cultivated Soil ◽  
Combined Use ◽  
Dry Soil ◽  
Microbial Preparation ◽  
Harvest Maturity

The article presents the results of a vegetation experiment on studying an effect of increasing doses of nitrogen (factor С - N0; No.o5; No.io; N015; No.2o; N0,25 g/kg of absolutely dry soil) and pre-sowing inoculation of seeds with biological preparation "Risotorphine" (factor В - no inoculation; by inoculation) on the formation of vegetative mass and grain yield ofpeas at cultivating in the conditions of a poorly cultivated (factor A0) and of a medium cultivated (factor A f sod-podzolic soil. Cultivation degree of soil was expressed by such criteria as power of an arable horizon, value of metabolic acidity and content of mobile phosphorus, a degree of saturation of soil with bases. For experience tab there were used Mitscher-lich cups with a capacity of 5 kg of absolutely dry soil (a.d.s.), in 16 repetitions of options. The experiments were conducted in the conditions of vegetation site on the territory of University Scientific Centre "Lipogorie" of FSBEI Perm GATA, guided by a science-based methodology. When harvesting peas for a green mass more intensive development and productivity of plants (23.3 and 58.9, 40.0, 78.8 g/cup, respectively) in the phase of stem branching and budding a beginning offlowering that is recorded for its use on the background of inoculation, usage of mineral nitrogen in a dose of 0.10 g/kg on a poorly cultivated soil and 0.15 g/kg a.d.s. on a medium cultivated soil. Applying of higher doses of nitrogen has a depressing effect on development of assimilating surface of pea plants on a poorly and a medium cultivated soil. When raising pea plants before harvest maturity of grain: in the conditions of a poorly cultivated soil for yield at the level of 7.92 g/cup, the process of carrying on only an inoculation of seed with microbial preparation "Rizotorfin" can be considered; in the medium cultivated soil varieties, plant peas impose higher requirements for the level of mineral nutrition the maximum yield in the experiment (which 9.22 g/cup), noted at a combined use of inoculation and mineral nitrogen in a dose of 0.20 g/kg a.d.s.

scholarly journals A Biodegradable Ramie Fiber-Based Nonwoven Film Used for Increasing Oxygen Supply to Cultivated Soil

2018 ◽  
Vol 8 (10) ◽  
pp. 1813 ◽  
Author(s):  
Wanlai Zhou ◽  
Yanbin Niu ◽  
Chaoyun Wang ◽  
Yuanru Yang ◽  
Zhijian Tan ◽  
...  
Keyword(s):  
Oxygen Supply ◽  
Close Contact ◽  
Bottom Surface ◽  
Ramie Fiber ◽  
Prepared Film ◽  
Short Term ◽  
Soil Microbial ◽  
Plant Cultivation ◽  
Cultivated Soil ◽  
Ecological Problems

Plastic agricultural nonwoven films are traditionally used as covering materials, and are prone to cause various ecological problems due to their poor biodegradability. In this paper, a ramie fiber/starch nonwoven film was prepared, and was used as bedding material, that was covered by cultivated soil as opposed to covering it. The biodegradability and porosity characteristics of the film were analyzed, and its effect on oxygen supply to soil was investigated. Results showed that the prepared film had good biodegradability (65.6% after 72 days), and had a loose and porous structure, with the main pore size being in the range of 250–300 μm. After the soil moisture content was reduced to about 44%, the oxygen concentration in the soil that was in close contact with the film, which padded the bottom surface of the plate, rose sharply and then kept stable at 20.1%, whereas soil directly in contact with the plate remained extremely anoxic (0.2%). It was concluded that use of the prepared film increased the oxygen supply to the soil in contact with it, which sufficiently compensated for the oxygen consumption caused by soil microbial activities. Thus, the prepared film is very suitable in short-term plant cultivation within containers where anoxia often occurs.

scholarly journals Plant rotation as a means of controlling wilt disease of Lupinus luteus L. on the basis of mycological investigations

2014 ◽  
Vol 12 (2) ◽  
pp. 225-240
Author(s):  
Wanda Truszkowska
Keyword(s):  
Fusarium Oxysporum ◽  
Wilt Disease ◽  
Crop Rotations ◽  
Lupinus Luteus ◽  
Cultivated Plants ◽  
Quantitative Composition ◽  
Qualitative And Quantitative ◽  
Cultivated Soil ◽  
Fungal Populations

Having observed in 1969 an epidemic of Fusarium</i> wilt disease of lupin, the communities of fungi occurring in a given cultivated soil were examined. In the years 1970-72, the numbers of the <i>Fusarium oxysporum</i> f.sp. <i>lupini</i> population were found to change, in the others under the influence of lupin having been cultivated in the following crop rotations : 1) rye, potatoes, oats or 2) rye, maize, oats. Provoking changes in the qualitative and quantitative composition of the fungal populations in cultivated soil by means of different cultivated plants, with the aim of altering the conditions of the pathogen, should be practised in order to protect the lupin crops against <i>Fusariuni</i> wilt disease.

Surface physical properties of a sandy loam soil under different tillage practices

Soil Research ◽  
1988 ◽  
Vol 26 (3) ◽  
pp. 549 ◽  
Author(s):  
KY Chan ◽  
JA Mead
Keyword(s):  
Organic Carbon ◽  
Physical Properties ◽  
Sandy Loam ◽  
Sandy Loam Soil ◽  
Organic Carbon Content ◽  
Moisture Profile ◽  
Tillage Practices ◽  
Pasture Soil ◽  
Cultivated Soil ◽  
Loam Soil

The infiltration behaviour and physical properties of a hardsetting sandy loam soil at Cowra, N.S.W., following 2 years of different tillage treatments are reported. Soil that had not been cultivated for 25 years was also investigated at an adjacent pasture site. Infiltration of simulated rainfall at the end of the wheat-growing season gave moisture profiles that were quite different for cultivated, direct drilled and pasture soils. The moisture profile for the cultivated soil suggested the presence of an impeded layer which retarded the movement of infiltrated rain to the subsoil. Porosity measurements confirmed the presence of a layer with significantly fewer macropores (> 300 �m diameter) at the 50-100 mm depth in the cultivated soil, when compared with the direct drilled soil. The old pasture soil had significantly higher porosity (> 300 �m diameter) in the top 100 mm. Aggregate stabilities and organic carbon contents were measured in narrow increments to 150 mm depth for the three different soils, and revealed that a surface 25 mm layer of high organic carbon and highly stable macro-aggregates was present in the pasture and direct drilled soils but absent in the cultivated soil. The unstable surface layer in the conventionally cultivated soil was a consequence of the mixing and inverting action of cultivation and was not due to a net loss of organic carbon from the profile. The organic carbon content of the pasture soil was not significantly different from the direct drilled soil below 50 mm; however, it was significantly lower than the conventionally cultivated soil between 50 and 150 mm depth. These results indicate a need to adopt tillage practices that can preserve the top 25 mm layer of such fragile soils.

Study of NOx and CO2 production of cultivated soil in closed microcosm experimental system

2007 ◽  
Vol 85 (1) ◽  
pp. 31-38 ◽  
Author(s):  
Gy. Kampfl ◽  
K. Kristóf ◽  
A.A. Algaidi ◽  
H.E.A.F. Bayoumi Hamuda ◽  
Gy. Heltai
Keyword(s):  
Experimental System ◽  
Co2 Production ◽  
Cultivated Soil
Sign in / Sign up

Export Citation Format

Share Document