Influence of the organo-mineral complex and microbial preparations on the number of micromycetes in the root zone of spring barley

2019 ◽  
Author(s):  
A.A. Suslov ◽  
◽  
D.G. Sviridenko ◽  
E.P. Pimenov ◽  
N.A. Vasilyeva ◽  
...  
Keyword(s):  
Root Zone ◽  
Spring Barley ◽  
Mineral Complex

Transport of iodide in structured soil under spring barley during irrigation experiment analyzed using dual-continuum model

Biologia ◽  
2013 ◽  
Vol 68 (6) ◽  
Author(s):  
Jaromír Dušek ◽  
Ľubomír Lichner ◽  
Tomáš Vogel ◽  
Vlasta Štekauerová
Keyword(s):  
Continuum Model ◽  
Preferential Flow ◽  
Root Zone ◽  
Spring Barley ◽  
Soil Matrix ◽  
Iodide Transport ◽  
Loam Soil ◽  
Water Drops ◽  
Structured Soil ◽  
The One

AbstractTransport of radioactive iodide 131I− in a black clay loam soil under spring barley in an early ontogenesis phase was monitored during controlled field irrigation experiment. It was found that iodide bound in the soil matrix could be mobilized by the surface leaching enhanced by mechanical impact of water drops and transported below the root zone of crops via soil cracks. The iodide transport through structured soil profile was simulated by the one-dimensional dual-continuum model, which assumes the existence of two inter-connected flow domains: the soil matrix domain and the preferential flow domain. The model predicted relatively deep percolation of iodide within a short time, in a good agreement with the observed vertical iodide distribution in soil. The dual-continuum approach proved to be an adequate tool for evaluation of field irrigation experiments conducted in structured soils.

scholarly journals DENITRIFICATION PECULIARITIES IN AGROCOENOSIS UNDER THE INFLUENCE OF MINERAL FERTILIZERS AND MICROBIAL PREPARATIONS

2010 ◽  
Vol 10 ◽  
pp. 7-19
Author(s):  
V.V. Volkogon ◽  
S.B. Dimova ◽  
K.I. Volkogon ◽  
M.S. Komok ◽  
N.P. Shtan’ko
Keyword(s):  
Growth And Development ◽  
Root Zone ◽  
Spring Barley ◽  
Mineral Nitrogen ◽  
Mineral Fertilizers ◽  
Agricultural Crops ◽  
Substrate Use ◽  
Biological Denitrification ◽  
Denitrification Activity ◽  
Nitrite Respiration

The paper shows the results of studies of denitrification activityin root zone of spring barley, maize and potato under the use of mineralfertilizers and microbial preparations. It was established that applicationof optimal for the plants growth and development doses of fertilizershad restrained the biological denitrification activity due to the bothplants assimilation of mineral nitrogen and deprivation of rhizosphericmicroorganisms with nitrite respiration substrate. Use of physiologicallyungrounded doses of fertilizers especially when combining withmicrobial preparations had led to the significant loses of nitrogen dueto the denitrification. Thereby the application of microbial preparationsin agricultural crops growing technologies should be performed onoptimal agricultural backgrounds keeping biological denitrification atits lowest levels.

scholarly journals Nitrogen Balance in Fertilizer Application and Plant Production

1984 ◽  
Vol 15 (4-5) ◽  
pp. 169-176
Author(s):  
H.C. Aslyng
Keyword(s):  
Annual Variation ◽  
Root Zone ◽  
Soil Depth ◽  
Spring Barley ◽  
Fine Sand ◽  
Fertilizer Application ◽  
Coarse Sand ◽  
Plant Production ◽  
Sand Soil ◽  
Average Annual Precipitation

The investigation comprises several agricultural crops, a Karup locality (56°16' N, 9°9' E) with an average annual precipitation of 775 mm and coarse sand (soil 1), and a Tåstrup locality (55°40' N, 12°18' E) with an average precipitation of 600 mm and clay with fine sand (soil 6). Soils 1 and 6 have 5 and 8 t N/ha in organic matter, respectively, to 50 cm soil depth and an average effective root zone capacity for available water of 60 and 170 mm. Data for soils 1 and 6 in kg N/ha as average (with great annual variation) were for spring barley found to be around the following: mineralization 75 and 135, denitrification 5 and 20, uptake in harvest 105 and 155, leaching 65 and 40, and spring storage 10 and 60, respectively. Wintering and late growing crops reduce the leaching by around 20 kg N/ha. The nitrogen leaching from sandy soil is clearly influenced by variation in fertilization whereas the leaching from clay soil is only a little affected.

The value of calcium nitrate for spring-sown cereals

1959 ◽  
Vol 52 (2) ◽  
pp. 200-206 ◽  
Author(s):  
F. V. Widdowson ◽  
A. Penny ◽  
R. J. B. Williams ◽  
G. W. Cooke
Keyword(s):  
Ammonium Sulphate ◽  
Spring Wheat ◽  
Root Zone ◽  
Spring Barley ◽  
Maximum Yield ◽  
Calcium Nitrate ◽  
Early Growth ◽  
Sowing Time ◽  
Nitrogen Contents

1. Seven experiments on spring barley and five on spring wheat carried out in 1955–7 compared dressings of ammonium sulphate and calcium nitrate applied to the seedbeds at 0·3 and 0·6 cwt. N/acre. The fertilizers were tested both when broadcast and when drilled with the seed.2. Consistently higher yields of barley were produced by drilling than by broadcasting ammonium sulphate. Drilling calcium nitrate at 0·3 cwt. N/acre was superior to broadcasting for barley but when applied with the seed at 0·6 cwt. N/acre this fertilizer retarded germination and early growth and gave smaller yields than were obtained by broadcasting. Broadcast dressings of both fertilizers gave higher yields of wheat than combine-drilled dressings. There is a considerable risk of fertilizer ‘scorch’ when compound fertilizers containing all their nitrogen in nitrate form are combine-drilled at rates sufficient for maximum yield. This risk may be discounted when adequate rain follows drilling but the check to germination may be sufficient to reduce yields in dry springs, on light soils, and on badly prepared seedbeds. Fertilizers containing all their nitrogen in ammonium form appear to be quite safe at the rates of dressing tested in this work.3. Calcium nitrate and ammonium sulphate gave similar yields and nitrogen contents of both crops when the fertilizers were broadcast on the seedbed. Nitrates applied at sowing-time to cereals grown in the drier parts of the country do not appear to be leached out of the root-zone before they can be taken up by crops.

scholarly journals THE ORIENTATION OF BIOLOGICAL NITROGEN TRANSFORMATION PROCESSES IN SOIL UNDER THE ORGANIC PRODUCTION OF AGRICULTURAL PRODUCTS

2017 ◽  
Vol 25 ◽  
pp. 18-24
Author(s):  
V. V. Volkohon ◽  
A. M. Moskalenko ◽  
S. B. Dimova ◽  
M. A. Zhurba ◽  
K. I. Volkohon ◽  
...  
Keyword(s):  
Nitrogen Fixation ◽  
Field Experiments ◽  
Root Zone ◽  
Spring Barley ◽  
Organic Fertilizer ◽  
Nitrogen Transformation ◽  
Organic Production ◽  
Nitrogen Fixation Activity ◽  
Fixation Activity ◽  
Biological Nitrogen

The paper covers the study of direct impact and after-effect of 40 t/ha of cattle manure on theorientation of nitrogen fixation and biological denitrification processes in the root zone of potatoes,spring barley, pea, and winter wheat plants in rotation in a stationary field experiments on leachedblack soil. Application of manure had significantly increased the nitrogen fixation activity, whilepromoting a high level of N2O emission. The use of microbial preparations for pre-seeding bacterization of seeds optimizes the course of biological nitrogen transformation process — through theenhancement of nitrogen fixation activity and reduction of gaseous nitrogen losses (with the exception of Biogran use on potatoes in the year of manure application). Introduction with manure of alarge number of microorganisms to the soil offsets the positive effect of biopreparations use. Yieldrecords and estimation of grain output per hectare within the crop rotation cycle indicates the practicability of combined application of manure and microbial preparations (excluding the year of direct effect of organic fertilizer) in organic agriculture.

Ferrihydrite dissolution at the root zone of crops under semi-arid condition controls the plant uptake of uranium and arsenic

2020 ◽  
Author(s):  
Arindam Malakar ◽  
Michael Kaiser ◽  
Daniel D. Snow ◽  
Harkamal Walia ◽  
Chittaranjan Ray
Keyword(s):  
Plant Uptake ◽  
Root Zone ◽  
Arid Condition ◽  
Semi Arid

Managing Landscape Irrigation to Avoid Soil and Nutrient Losses

EDIS ◽  
2013 ◽  
Vol 2013 (11) ◽  
Author(s):  
George Hochmuth ◽  
Laurie Trenholm ◽  
Don Rainey ◽  
Esen Momol ◽  
Claire Lewis ◽  
...  
Keyword(s):  
Natural Environment ◽  
Management Practices ◽  
Root Zone ◽  
Irrigation Management ◽  
Critical Factor ◽  
Nutrient Losses ◽  
County Agents ◽  
The Right ◽  
Soil And Water

Proper irrigation management is critical to conserve and protect water resources and to properly manage nutrients in the home landscape. How lawns and landscapes are irrigated directly impacts the natural environment, so landscape maintenance professionals and homeowners must adopt environmentally-friendly approaches to irrigation management. After selecting the right plant for the right place, water is the next critical factor to establish and maintain a healthy lawn and landscape. Fertilization is another important component of lawn and landscape maintenance, and irrigation must be applied correctly, especially following fertilization, to minimize potential nutrient losses. This publication supplements other UF/IFAS Extension publications that also include information on the role of soil and the root zone in irrigation management. This publication is designed to help UF/IFAS Extension county agents prepare materials to directly address nutrient losses from lawns and landscapes caused by inadequate irrigation management practices. This 6-page fact sheet was written by George Hochmuth, Laurie Trenholm, Don Rainey, Esen Momol, Claire Lewis, and Brian Niemann, and published by the UF Department of Soil and Water Science, October 2013. http://edis.ifas.ufl.edu/ss586

TRENDS IN MINERAL COMPLEX DEVELOPMENT AT THE TURN OF THE CENTUARY

2018 ◽  
pp. 3-15
Author(s):  
A. L. Dergachev ◽  
V. I. Starostin
Keyword(s):  
World Economy ◽  
Raw Materials ◽  
Supply And Demand ◽  
Mineral Resources ◽  
Strategy Of Development ◽  
Mineral Complex ◽  
Complex Development ◽  
Mineral Commodities ◽  
Working Out ◽  
Mineral Base

Important trends in development of world's mineral complex at the beginning of the 21st century are increase of supply and demand for mineral materials differentiated for various metals and nonmetallic mineral resources, regions and countries; concentration of production of mineral commodities in small number of countries; falling availability of economic reserves of raw materials for world economy even at current level of material extraction. The tendencies should be taken into account when working out strategy of development of Russian mineral base.

Sign in / Sign up

Export Citation Format

Share Document