Using the Loginom analytical platform to process long-term field experience data

The article discusses the capabilities of the Loginom analytical platform for processing long-term field experience data; such software components are used as data transformation (row filter, sorting, grouping, cross-table, cross-diagram, sliding window); preprocessing (editing emissions, smoothing), research (correlation analysis, factor analysis), Data Mining (self-organizing network, clustering) to identify the effect of crop rotations, soil liming, application of various combinations of mineral and organic fertilizers, weather conditions on yield of oats and barley.

Using the Loginom analytical platform to process long-term field experience data

The article discusses the capabilities of the Loginom analytical platform for processing long-term field experience data; such software components are used as data transformation (row filter, sorting, grouping, cross-table, cross-diagram, sliding window); preprocessing (editing emissions, smoothing), research (correlation analysis, factor analysis), Data Mining (self-organizing network, clustering) to identify the effect of crop rotations, soil liming, application of various combinations of mineral and organic fertilizers, weather conditions on yield of oats and barley.

Productivity of long-term bean grass in single-species and compatible with anwless bromegrass feed agrophytocenoses

Goal. Establish the best perennial legumes when grown in single-species and compatible fodder agrocenoses with stokolos boneless and the effectiveness of the use of nitrogen-fixing and phosphorus-mobilizing bacterial preparations, as well as liming. Methods. General scientific − hypotheses, inductions and deductions, analogies, generalizations and special − field, laboratory, mathematical and statistical, computational and comparative. Results. Based on the generalization of literature sources, it is proved that the creation of sown grasslands, with high content of perennial legumes on meadows and arable lands, which are derived from intensive cultivation is one of the most promising areas of organic onion growing. Productivity of single-species crops of perennial legumes and their mixtures with boneless stalk on average for five years after the yield of 1 ha of dry mass in the version without fertilizers ranged from 5.12 to 8.38 tons, which is 1.7−2.5 times more in comparison with a grassy grass stand which is formed from one-species crops of a stokolos of a boneless. The highest productivity and level of symbiotic nitrogen accumulation (191−266 kg / ha) were provided by agrocenoses with the participation of alfalfa, and the lowest - meadow clover. The efficiency of soil liming during sowing of grasses and application of inoculation of seeds of perennial legumes with nitrogen-fixing and phosphorus-mobilizing preparations is given. Changes in the chemical composition of feed under the influence of the studied factors are also shown. Conclusions. Different types of perennial legumes and their mixtures with boneless stalk without fertilizers provide productivity in the range of 5.12−8.38 t / ha of dry weight, which is 1.7−2.5 times more than the grass cover, which is formed from single-species sowing of stokolos bezzostoy. Inoculation of perennial legume seeds with nitrogen-fixing and phosphorus-releasing microbiological preparations increases the productivity of perennial legumes and their mixtures with cereals by 2−6%, and soil liming before sowing – by 3−11%. The greatest effect is provided by the combined use of these bacterial drugs. Alfalfa sowing responds best to their use and liming.

The effect of chemical agents on the productivity of crop rotations with legumes and cereals in the conditions of unstable moisture in the south of the Non-Black Soil Zone of Russia

The article summarizes the results of 1990-2012 research conducted during the stationary experiment on leached heavy loam chernozem in the Republic of Mordovia. The objects of the study are two crop rotations (grain-grass-fallow and grain-grass crop rotations) where alfalfa of the VEGA 87 variety was used as a bean component, smooth brome (Bromus inermis) Penza 1 was used as a grain component. It has been established that mineral fertilizers in grain-grass-fallow crop rotations with legumes increased productivity by 0.34-0.55, with cereals – by 0.31-0.73 tons of feed units/ha. That provided to get additional income from 1.19 to 1.40 and 1.09 to 1.47 rub/rub, respectively. Recommended doses of mineral fertilizers against soil liming by 0.5 hydrolytic acidity (h.a,) were N22-39P42K52, for grain-grass-fallow crop rotation with alfalfa and N27-71P42K52. with smooth brome. In the grain-grass crop rotation with legume and cereal components the payback of 1 kg active ingredient (a.i.) of complete mineral fertilizer was 6.13 and 6.17 kg feed units, additional income was 2.00 and 1.99 rub/rub, the productivity increased by 0.86-1.08 and 0.84-1.22 tons of feed units/ha, respectively. The payback of 1 kg of a. i. nitrogen as part of a complete mineral fertilizer in this crop rotation averaged 13.04 kg feed units versus 11.5 kg in legumes. Recommended doses of mineral fertilizers were N26-87P46K65 against the background of liming of the soil by 0.5-1.0 h. a. In crop rotation with smooth brome phosphorus-potash fertilizers should not be applied due to the low additional income (0.97-1.07 rub/rub).

Changes in chemical soil and corn yield after application of gypsum and potassium doses

Soil liming is a common practice in agriculture. It aims to reduce soil acidity and to supply calcium and magnesium. Lime, however, is not easily soluble in the soil, and its reaction products are often concentrated in the application zone, which is mainly the topsoil layer. In order to increase the concentration of nutrients in deeper layers, agricultural gypsum—a byproduct of phosphoric acid production process, rich in calcium and sulfur—is used. In this context, the objective of this study was to evaluate the chemical attributes of the oxysoil and the corn´s yield to the application of gypsum associated with potassium (K) rates. The study was developed in Uberaba city, Minas Gerais state, Brazil. The factorial scheme was used 5x5, with five rates of K (0, 100, 180, 240, 360 kg ha-1 K2O) and five gypsum rates (0, 500, 1000, 2000, 4000 kg ha-1) in a randomized complete block design with four replications. The soil chemical attributes were evaluated at 0.0-0.20 m and 0.20-0.40 m depth and the biometric and productive attributes of corn. The application of gypsum resulted in the increase of calcium (Ca) and sulfur (S) contents in all depths; reduced the levels of pH, manganese, potential acidity (H + Al) in the 0.0-0.20 m depth, and increase the levels of base of saturation and sum of bases on the 0.20-0.40 m depth. Corn yield and biometric attributes no were influenced by the factors evaluated.

ALTERAÇÕES NO SISTEMA SOLO-PLANTA EM FUNÇÃO DA REAPLICAÇÃO DE SILICATOS NO SISTEMA PLANTIO DIRETO

Objetivou-se avaliar as alterações químicas ao longo do perfil do solo, o desenvolvimento e a produtividade da cultura da soja (Glycine Max L. “Merr”) em função da aplicação superficial de silicatos na correção da acidez do solo. Este experimento vem sendo conduzido há sete anos, em delineamento com blocos casualizados e parcelas subdivididas. As parcelas foram distribuídas inicialmente pelas formas de aplicação dos corretivos: aplicação com incorporação até 20 cm de profundidade e aplicação em superfície; e na subparcela têm se os corretivos: escória de aciaria, escória de forno de panela, escória do aço, wollastonita, calcário agrícola e calcário agrícola calcinado; além de uma testemunha sem aplicação de material corretivo; com quatro repetições. Os corretivos foram reaplicados manualmente a lanço, sem incorporação para ambas as formas de aplicação adotadas na implantação do sistema plantio direto. A wollastonita, escória do aço inox e escória de aciaria aumentaram os teores de P, K, Ca e Si, e os valores de SB, V% e pH. Para a soja, esses acréscimos foram fundamentais para proporcionar incrementos na produtividade de grãos chegando a 7,0 Mg ha-1 com a aplicação de escória de aciaria, não diferindo estatisticamente da escória do aço inox e da wollastonita.Palavras-chave: acidez do solo; calagem; escória de siderurgia; silício; soja. CHANGES IN THE SOIL-PLANT SYSTEM DUE TO THE REAPPLICATION OF SILICATES IN THE NO-TILLAGE SYSTEM ABSTRACT: The objective of this study was to evaluate the chemical changes along the soil profile, development and yield of the soybean crop (Glycine Max L. "Merr") as a function of the superficial application of silicates in soil acidity correction. This experiment has been conducted for seven years, in a randomized complete block design and subdivided plots. The plots were initially distributed by the application of the correctives: application with incorporation up to 20 cm and surface application; and in the subplot have the correctives: steel slag, ladle furnace slag, stainless steel slag, wollastonite, agricultural limestone and calcined agricultural limestone; as well as a control treatment without the use of correctives; with four replicates. The correctives were reapplied manually, without incorporation for both forms of application adopted in the implantation of the no-tillage system. Wollastonite, stainless steel slag and steel slag increased the contents of P, K, Ca and Si, and the values of SB, base saturation and pH. For soybeans, these additions were essential to provide grain yield increases of 7.0 Mg ha-1 with the application of steel slag, not statistically differing from stainless steel slag and wollastonite.Keywords: acidity of soil; liming; steel slag; silicon; soybean.