The fertilizer equivalence of phosphorus and potassium in organic manures applied to arable soils

This study was carried out to ascertain the effects of organic manure (farmyard manure, poultry manure, and vermicompost) and chemical fertilizers NPK (nitrogen, phosphorus, and potassium) on the growth and yield of onion. The research was consisting ten treatments with three replications. Different levels of nitrogen (0, 100, and 150 kg ha-1), phosphorus (0, 75, and 100 kg ha-1), potassium (0, 80, and 100 kg ha-1) fertilizers, and various rates of organic manures (20 ton ha-1 of farmyard manure, 20 t ha-1 of poultry manure and 15 t ha-1 of vermicompost) were applied to the soil at different combinations. The results of this study have shown that both inorganic fertilizers and organic manures significantly influenced all growth and yield parameters. Whereas, maximum plant height (50.50 cm) and bulb yield (30.75 t ha-1) were obtained at the combination of 20 t ha-1 farmyard manure + 150 kg ha-1 N + 100 kg ha-1 P2O5 + 100 kg ha-1 K2O. However, the minimum bulb yield (15.80 t ha-1) was observed with control where no fertilizer was applied. Therefore, application of 20 t ha-1 farmyard manure during field preparation followed by application of 150 kg ha-1 N + 100 kg ha-1 P2O5 + 100 kg ha-1 K2O can be recommended for optimal growth and maximum bulb yield of onion.

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ABOUT REALIZATION OF THE AGRICULTURAL BIOLOGIZATION PROGRAMME IN BELGOROD REGION

Vestnik of the Russian agricultural science ◽

10.30850/vrsn/2018/4/41-44 ◽

1970 ◽

pp. 41-44

Author(s):

S. V. Lukin

Keyword(s):

Organic Substance ◽

Soil Cover ◽

Organic Fertilizers ◽

Arable Soils ◽

Mobile Forms ◽

Level Of Use ◽

Haplic Chernozems ◽

Lime Application ◽

Phosphorus And Potassium ◽

Central Chernozem

In article the main results of a biologization of agriculture in the Belgorod region are considered. The soil cover is generally presented by Haplic Chernozems, Luvic Сhernozems and Calcic Chernozems. Data on dynamics of application of fertilizers and volumes of lime application of soils in Central Chernozem area are analysed. It is established that thanks to implementation of the program of a biologization of agriculture, during 2015-2017 the level of use of organic fertilizers has increased by 3,29 times (to 7,71 t/hectare), volumes of lime application have increased by 9,91 times (up to 232 thousand hectares in the sum in three years), in comparison with 2009-2011. For the same years the share of bean cultures in the structure of sown areas has increased by 5,7% (to 23,6%), and the amount of symbiotic fixing of nitrogen has increased by 1,66 times and has reached on average in a year of 19,4 kg/hectare. The square on which biological means of protection of plants were used has increased almost twice (to 65,9 thousand hectares/year). For the last three years for protection of soils against an erosion it has been carried out meliorative actions on the total area of 22,4 thousand hectares. By results of continuous agrochemical inspection essential decrease in a share of sour soils, increase in security of arable soils with organic substance, mobile forms of phosphorus and potassium is established.

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The effects of agronomy on the carbon and nitrogen contained in the soil biomass

The Journal of Agricultural Science ◽

10.1017/s0021859600040740 ◽

1981 ◽

Vol 97 (2) ◽

pp. 319-327 ◽

Cited By ~ 61

Author(s):

T. McM. Adams ◽

R. J. Laughlin

Keyword(s):

Organic Matter Content ◽

Matter Content ◽

Arable Soils ◽

Grassland Soils ◽

Mineral N ◽

Grassland Soil ◽

Organic C ◽

Organic Manures ◽

Carbon And Nitrogen ◽

Total Soil N

SummarySoils of various agronomic histories were fumigated with chloroform, and the resultant increased production of CO2 and mineral-N measured and expressed as biomass C and the flush of mineral-N production (FN), respectively. Biomass C and FN contents of grassland soils were greater than those of arable soils, and significant correlations with macro organic-matter content were found. Biomass C contents varied from 7 to mg C/100 g soil in arable soil and from 31 to 222 mg C/100 g soil in grassland or woodland. The proportion of soil organic C that was contained within the biomass ranged from 0·3 to 4·0%, whilst FN comprised from 1·0 to 11·7% of total soil N. FNcontents ranged from 1·1 to 13·2mg N/1OOg soil for arable soils, and from 2·5 to 31·7 mg N/100 g soil for grassland and woodland. Application of organic manures increased biomass C and FN contents in grassland soil.

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Nutrient cycles involving phosphorus and potassium on livestock farms in Northern Ireland

The Journal of Agricultural Science ◽

10.1017/s0021859600062171 ◽

1975 ◽

Vol 85 (2) ◽

pp. 345-349 ◽

Cited By ~ 9

Author(s):

S. N. Adams ◽

J. S. V. McAllister

Keyword(s):

Northern Ireland ◽

Constant Level ◽

Nutrient Cycles ◽

Rational Basis ◽

Organic Manures ◽

Soil P ◽

Pilot Scheme ◽

Livestock Farms ◽

Phosphorus And Potassium

SUMMARYA method is described of determining the fertilizer P and K requirements of livestock farms from a knowledge of the stock carried and the crops grown on the farm as a whole. Recycling of P and K through organic manures is put on a rational basis and the fertilizer P and K needed to keep soil P and K at an adequate and constant level is easily measured.A pilot scheme on 100 Northern Ireland farms is testing the method's value for giving advice. It is readily acceptable to advisers and farmers and is enabling substantial savings of fertilizers to be made.

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Impact of poultry manure fertilization on chemical and biochemical properties of soils

Plant Soil and Environment ◽

10.17221/668/2017-pse ◽

2017 ◽

Vol 63 (No. 12) ◽

pp. 558-563 ◽

Cited By ~ 1

Author(s):

Kobierski Mirosław ◽

Bartkowiak Agata ◽

Lemanowic Joanna ◽

Piekarczyk Mariusz

Keyword(s):

Ph Value ◽

Poultry Manure ◽

Chemical Properties ◽

Total Content ◽

Biochemical Properties ◽

Arable Soils ◽

Biological Index ◽

Copper Manganese ◽

Phosphorus And Potassium ◽

Alkaline And Acid Phosphatase

The aim of the research was to evaluate the chemical properties and enzymatic activity of arable soils which, for the period of 10 years, were fertilized with poultry manure (PM). Fertilization with PM resulted in a significant increase in the content of organic carbon and total exchangeable bases in soil. The application of that fertilizer increased the pH value. Fertilization with PM also slightly increased the total content of copper, manganese and iron. There was found, however, a significant increase in the total content of Zn. The annual application of 10 tonnes of PM significantly increased the content of phosphorus and potassium available to plants. That fertilizer inhibited the activity of both alkaline and acid phosphatase, which must be related to a very high content of phosphorus available to plants. Poultry manure resulted in higher values of the biological index of fertility of soil, whereas the activity of phosphomonoesterases was significantly lower.

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Evaluation of the sulphur status of some grasses for silage in Northern Ireland

The Journal of Agricultural Science ◽

10.1017/s0021859600059475 ◽

1985 ◽

Vol 105 (3) ◽

pp. 581-585 ◽

Cited By ~ 10

Author(s):

R. J. Stevens

Keyword(s):

Northern Ireland ◽

Water Soluble ◽

Organic Manures ◽

Sulphur Deficiency ◽

Total Sulphur ◽

Intensively Managed ◽

Phosphorus And Potassium ◽

Soluble Sulphate ◽

Kjeldahl Nitrogen

Seventy-five grass samples for first-cut silage and 131 samples for second-cut silage were collected in 1983 from intensively managed farms with coarse-textured soils. Samples with total sulphur less than 2·0 g/kg or Kjeldahl nitrogen greater than 28 g/kg, together with nitrogen to sulphur ratio greater than 14, and adequate phosphorus and potassium, were selected as suboptimal in sulphur. The extent of sulphur deficiency was assessed using water-soluble sulphate values of 300–500 and 200–300 mg S/kg to indicate yield depressions of less than 5 and 10% respectively. In the first cut, 20 and 8% of sites were likely to have suffered yield depressions of less than 5 and 10% respectively. Soil-extractable sulphate values less than 10 mg S/kg indicated marginal sulphur reserves for second-cut silage at 49% of the sites. Grass analyses of the second-cut samples showed that 11 and 3% of the sites were likely to have suffered yield depressions of less than 5 and 10% respectively. Incidental sulphur inputs from deposition, organic manures and mineralization may have obviated much of the potential sulphur deficiency for second-cut grass.

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Use of agroecological soil monitoring data in designing adaptive landscape farming systems

BIO Web of Conferences ◽

10.1051/bioconf/20213603015 ◽

2021 ◽

Vol 36 ◽

pp. 03015

Author(s):

S.V. Lukin ◽

V.A. Chernikov

Keyword(s):

Arable Land ◽

Farming Systems ◽

Monitoring Data ◽

Adaptive Landscape ◽

Mineral Fertilizers ◽

Soil Protection ◽

Arable Soils ◽

Agricultural Producers ◽

Mobile Forms ◽

Phosphorus And Potassium

The article analyzes the experience of using agroecological monitoring data in designing adaptive landscape systems of agriculture and soil protection in the Belgorod region. On the basis of data on soil acidity, design and estimate documentation for liming is developed. Materials on the content of soil organic matter are used in the design of measures to form a deficient balance of humus. Information on the availability of arable soils with mobile forms of phosphorus and potassium is necessary for calculating doses of mineral fertilizers. With low availability of mobile forms of sulphur and trace elements, recommendations are being developed for the use of fertilizers containing scarce elements. As a result of the implementation by agricultural producers of projects of adaptive landscape systems of agriculture and soil protection, in 2015-2018, compared to 2010-2014, the use of mineral fertilizers increased by 14.4 kg/ha, organic - by 3.3 tons/ha, lime production - by 38.1 thousand ha/year. As a result, arable land productivity increased by 1.01 thousand feed units.

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