scholarly journals Soil fertility and corn yield changes depending on the tillage system

2021 ◽  
Vol 2(26) ◽  
pp. 155-164
Author(s):  
A.A. Mnatsakanyan ◽  
Keyword(s):  
Soil Fertility ◽  
Central Zone ◽  
Conventional Tillage ◽  
Climatic Conditions ◽  
Corn Yield ◽  
Tillage Practice ◽  
Tillage Systems ◽  
Row Crops ◽  
Minimum Tillage ◽  
Tillage System

Tillage system is one of the factors that influences crop yield. The aim of the research was to determine the influence of the basic tillage systems on the change in soil fertility, yield and quality of corn grain in the soil and climatic conditions of the central zone of the Krasnodar Territory. The surveys were conducted in 2018–2020 on the experimental fields of the FSBSO “National Center of Grain named after P. P. Lukyanenko”. Soil – chernozems leached. All the experiments were carried out according to the standard methodology. In a stationary experiment, observations were performed to study several tillage practices: conventional tillage (25 cm depth plowing), mulch tillage with soil decompaction (reduced tillage done with a chisel plow to a depth of 32 cm for row crops), mulch tillage (deep tillage is excluded, disking to a depth of 10 cm twice or thrice is used instead). Plowing to a 25 cm depth improves the bulk of the soil in the 0–30 cm layer. However, chiseling to a depth of 32 cm and disking to a depth of 10 cm twice or thrice caused soil compaction. Standard tillage practice led to a decrease in the number of agronomically valuable aggregates (61.1 %) and their water resistance (59.4 %) compared to soil decompaction and minimum-tillage systems. The highest rates of productive moisture reserves were on the plots with traditional tillage and decompaction (140.6 and 141.5 mm, respectively, which is 14.7 % higher compared to the minimum mulching). The studied soil cultivation systems did not affect “1000-grain weight” but significantly affected the yield of grain from one ear (124.3 g) and the number of formed ears per one plant (1.04 pcs.). The corn yield on the fields with traditional and decompaction tillage methods was 56.9 and 55.9 c/ha, respectively; on minimum-tillage system, it decreased by 4.8 %. Protein content in grain harvested from the plots with traditional tillage practice was 11.4 %, which is higher compared to the minimum-tillage system. No significant differences were detected for crude ash and dry matter.

Effect of tillage system and crop sequence on irrigated sugarbeet production

2004 ◽  
Vol 84 (3) ◽  
pp. 739-747 ◽  
Author(s):  
J. R. Moyer ◽  
J. Nitschelm ◽  
P. Regitnig ◽  
R. E. Blackshaw ◽  
H. C. Huang ◽  
...  
Keyword(s):  
Wind Erosion ◽  
Soil Surface ◽  
Conventional Tillage ◽  
Amaranthus Retroflexus ◽  
Plant Residue ◽  
No Tillage ◽  
Dry Beans ◽  
Tillage Systems ◽  
Minimum Tillage ◽  
Tillage System

Sugarbeets (Beta vulgaris L.) are grown on intensively tilled-irrigated land in southern Alberta, which is subject to soil erosion by wind. Experiments were conducted on commercial fields near Burdett, AB, to determine the effect of the tillage system and previous crops on sugarbeet production. The previous crops were dry bean (Phaseolus vulgaris L.) or wheat (Triticum aestivium L.) and the tillage systems were conventional (moldboard plow, vibrashank cultivator, harrow, packer), minimum (double disc, self-cleaning harrow, glyphosate) or no tillage (glyphosate). After dry beans, sugarbeet fresh weight and extractable sugar yields were similar with all tillage systems. All of the tillage systems left less than 100 g m-2 of plant residue on the soil surface in the spring following dry beans, which is insufficient to protect the soil from wind erosion. After wheat, sugarbeet yields were similar with minimum and conventional tillage but lower with no tillage. Both minimum and no-tillage systems left sufficient plant residue on the soil surface to protect the soil from erosion (> 200 g m-2). Sugarbeet stand density following wheat was lower with no tillage than conventional or minimum tillage, reflecting poor seed placement and daily maximum soil temperature (5 cm depth) of up to 10°C lower under no tillage than conventional tillage. After wheat, there was a trend toward lower densities of hard-seeded annuals, such as redroot pigweed (Amaranthus retroflexus L.), after no tillage than conventional tillage. Of the cropping systems tested in this study, only the minimum tillage system after wheat provided optimum sugarbeet yield and left enough plant residue to protect the soil from wind erosion. Key words: Crop rotation, bean, wheat, sugarbeet, no-tillage

scholarly journals Research Concerning the Influence of Soil Tillage Systems on Weeds Control and Corn Hybrids Yield Cultivated in Southeastern Romania

2018 ◽  
Vol 1 (1) ◽  
pp. 40-44
Author(s):  
Claudiu Chițoi ◽  
Costică Ciontu ◽  
Maria Toader
Keyword(s):  
Conventional Tillage ◽  
Soil Tillage ◽  
Average Yield ◽  
Tillage Systems ◽  
Corn Hybrids ◽  
Climate Conditions ◽  
Minimum Tillage ◽  
Corn Crop ◽  
Tillage System ◽  
Weeds Control

Abstract The paper presents the yield results obtained in 2017 for the corn crop grown in the soil and climate conditions of Southern Romania (Calarasi county). The purpose of the research was to analyze the behavior and yield of a range of corn hybrids from different FAO groups: DKC 4590 (FAO 350), PP9911 (FAO 410) and Olt (FAO 430) under different soil tillage systems. The conventional tillage system applied was plowing at 20 and 30 cm, while scarifying at 30 and 40 cm and Tiger 3 MT at 20 and 30 cm were used for the minimum tillage system. The average yield of the three hybrids analyzed was 8,130.3 kg/ha in the conventional tillage system (plowing at 20 and 30 cm) with mechanical weeding, while for the conventional tillage system without mechanical weeding the yield was 7,682.2 kg/ha. The minimum tillage variants (scarifying and Tiger 3 MT) recorded an average yield of 6,746.4 kg/ha when mechanical weeding was applied and 6,474.9 kg/ha for the variants without mechanical weeding. Regarding the degree of weeding by tillage system, in the conventional tillage system (plowing at 20 and 30 cm) with mechanical weeding the number of weeds was 4.2 plants/m2 and 9.3 plants/m2 for the variants without mechanical weeding. The minimum tillage variants (scarifying and Tiger 3 MT) recorded 12.8 weeds/m2 when mechanical weeding was applied and 16.2 weeds/m2 for the variants without mechanical weeding.

scholarly journals PRODUTIVIDADE DO MILHO IRRIGADO NA REGIÃO DO ARENITO CAIUÁ NO NOROESTE DO PARANÁ

Irriga ◽  
2020 ◽  
Vol 25 (3) ◽  
pp. 465-480
Author(s):  
Giuliani Do Prado ◽  
Adriano Catossi Tinos ◽  
Denise Mahl ◽  
Rafael de Almeida Schiavon
Keyword(s):  
Water Deficit ◽  
Maximum Yield ◽  
Conventional Tillage ◽  
Corn Yield ◽  
No Tillage ◽  
Tillage Systems ◽  
Tillage System ◽  
Irrigation Depth ◽  
Quadratic Response ◽  
E Mail

Produtividade do milho irrigado na região do Arenito Caiuá no Noroeste do Paraná     Giuliani do Prado1; Adriano Catossi Tinos1; denise mahl1 e rafael de almeida schiavon1   1 Departamento de Engenharia Agrícola - DEA, Universidade Estadual de Maringá - UEM, Rodovia PR 482, km 45, CEP: 87.820-000, Cidade Gaúcha-PR, Brasil. E-mail: [email protected], [email protected], [email protected], [email protected].     1 RESUMO   Este trabalho foi desenvolvido na Universidade Estadual de Maringá, em Cidade Gaúcha/PR, e objetivou avaliar a produtividade da variedade de milho IPR-164, em diferentes sistemas de cultivo e lâminas de irrigação. O experimento, conduzido entre 01/10/2019 a 10/02/2020, foi estabelecido em faixas, com parcelas subdivididas, quatro repetições e dois tratamentos (sistemas de cultivo e lâminas de irrigação). Nas parcelas, os sistemas de cultivo foram: semeadura convencional e semeadura direta. Nas subparcelas, as lâminas de irrigação (percentual da lâmina líquida - %IL) foram: 0, 30, 63, 100 e 193%. Após a colheita, a produtividade de espigas (com e sem palha) e de grãos na umidade de 20,5 e 13% foram avaliadas. Os resultados mostraram que: 1) o sistema de cultivo não influenciou na produtividade; 2) a produtividade respondeu de forma quadrática às lâminas de irrigação; 3) lâminas próximas a 100% da IL resultaram em produtividades máximas e; 4) a sensibilidade ao déficit hídrico promoveu decréscimos de 20,4% na produtividade. Quando o custo do milímetro de água for 10 vezes maior que o custo do quilograma do milho (umidade 13%), economicamente é mais viável produzir 7.957 kg ha-1 com 60% da IL do que alcançar a produtividade máxima (8.283 kg ha-1).   Palavras-chave: lâminas de irrigação, sistemas de cultivo, déficit hídrico.     Prado, G; Tinos, A. C.; mahl, D; schiavon, R. A. Irrigated corn yield at the Arenito Caiuá region in Northwest of Paraná State, Brazil     2 ABSTRACT   This work was performed at Universidade Estadual de Maringá, in Cidade Gaúcha/PR city, Brazil, and aimed to evaluate the corn variety IPR-164 yield, in different tillage systems and irrigation depths. The experiment, carried out from 10/01/2019 to 10/02/2020, was set in strips design, with subdivided plots, four replications, and two treatments (tillage systems and irrigation depths). In the plots, the tillage systems were: conventional-tillage and no-tillage. In the subplots, the irrigation depths (percentage of the net irrigation depth - %NID), were: 0, 30, 63, 100, and 193%. After harvesting, the data corn ear yield (in-husk and unhusked) and the grain yield with the moisture of 20.5 and 13% were evaluated. The results showed that: 1) the tillage system did not influence the corn yield; 2) corn yield presented a quadratic response to the irrigation depths; 3) irrigation depths close to 100% of NID provided maximum yield; 4) the sensitivity to water deficit led to a 20.4% decrease in corn yield. When the millimeter water cost is 10 times greater than the corn kilogram cost (moisture 13%), it is economically more profitable to produce 7,957 kg ha-1 with 60% of NID than to reach  the maximum yield (8,283 kg ha-1).   Keywords: irrigation depths, tillage systems, water deficit.

scholarly journals Influence of Tillage Method on Management ofAmaranthusSpecies in Soybean

2017 ◽  
Vol 31 (1) ◽  
pp. 10-20 ◽  
Author(s):  
Jaime A. Farmer ◽  
Kevin W. Bradley ◽  
Bryan G. Young ◽  
Lawrence E. Steckel ◽  
William G. Johnson ◽  
...  
Keyword(s):  
Conventional Tillage ◽  
No Tillage ◽  
Tillage Systems ◽  
Deep Tillage ◽  
Minimum Tillage ◽  
Herbicide Resistant ◽  
Tillage System ◽  
Tillage Method ◽  
Residual Herbicide ◽  
Herbicide Programs

A field study was conducted in 2014 and 2015 in Arkansas, Illinois, Indiana, Ohio, Tennessee, Wisconsin, and Missouri to determine the effects of tillage system and herbicide program on season-long emergence ofAmaranthusspecies in glufosinate-resistant soybean. The tillage systems evaluated were deep tillage (fall moldboard plow followed by (fb) one pass with a field cultivator in the spring), conventional tillage (fall chisel plow fb one pass with a field cultivator in the spring), minimum tillage (one pass of a vertical tillage tool in the spring), and no-tillage (PRE application of paraquat). Each tillage system also received one of two herbicide programs; PRE application of flumioxazin (0.09 kg ai ha–1) fb a POST application of glufosinate (0.59 kg ai ha−1) plusS-metolachlor (1.39 kg ai ha–1), or POST-only applications of glufosinate (0.59 kg ha−1). The deep tillage system resulted in a 62, 67, and 73% reduction inAmaranthusemergence when compared to the conventional, minimum, and no-tillage systems, respectively. The residual herbicide program also resulted in an 87% reduction inAmaranthusspecies emergence compared to the POST-only program. The deep tillage system, combined with the residual program, resulted in a 97% reduction inAmaranthusspecies emergence when compared to the minimum tillage system combined with the POST-only program, which had the highestAmaranthusemergence. Soil cores taken prior to planting and herbicide application revealed that only 28% of theAmaranthusseed in the deep tillage system was placed within the top 5-cm of the soil profile compared to 79, 81, and 77% in the conventional, minimum, and no-tillage systems. Overall, the use of deep tillage with a residual herbicide program provided the greatest reduction inAmaranthusspecies emergence, thus providing a useful tool in managing herbicide-resistantAmaranthusspecies where appropriate.

scholarly journals Soybean (Glycine max (L.) Merr.) Growth, Yield, and Nodulation in the Early Transition Period from Conventional Tillage to Conservation and No-Tillage Systems

Agronomy ◽  
2021 ◽  
Vol 11 (12) ◽  
pp. 2477
Author(s):  
Sergeja Adamič ◽  
Robert Leskovšek
Keyword(s):  
Transition Period ◽  
Growth Yield ◽  
Conventional Tillage ◽  
Climatic Conditions ◽  
No Tillage ◽  
Conventional System ◽  
Tillage Systems ◽  
Tillage System ◽  
Glycine Max L ◽  
Seed Yields

Soybean (Glycine max (L.) Merr.) is the most important protein crop globally, with its cultivation area in Europe on the increase. To investigate how alternative tillage systems affect soybean growth, yield performance, and nitrogen fixation capacity in the early conversion period from conventional tillage to conservation and no-tillage practices, a field study was conducted in 2020 under the humid central European climatic conditions of Slovenia. A complete randomized block design with four repetitions was used for the three different tillage systems (conventional, conservation, and no-tillage). The results show that the majority of the studied soybean growth parameters (e.g., plant density, nodes per plant, and shoot and root dry matter) and the yield components (e.g., pods per plant, and 100-seed mass) were greatest for the reference conventional tillage system. The conventional system also showed significantly greater dry nodule mass (p < 0.01) and proportion of large-sized nodules (>4 mm) on both the tap root (p < 0.05) and the lateral roots (p < 0.001). A positive linear correlation between nitrogen content and nodule production in the roots also suggested increased nitrogen fixation for the conventional system. The less intensive conservation and no-tillage systems resulted in significantly greater soil compaction, which negatively affected early plant establishment and resulted in significantly decreased plant densities. Despite the large differences in plant stands and individual plant performances, no significant differences were seen for dry seed yields between these tillage systems. Dry seed yields for the conventional and conservation systems were 4.54 and 4.48 t ha−1, respectively, with only minor (non-significant) yield reduction for the no-tillage system, at 4.0 t ha−1. These data show that soybean cultivation in the early transition period to less intensive tillage systems have no major yield losses under these less suitable agro-climatic conditions if correct crop and weed management measures are implemented.

Evaluation of Herbicide Systems in Minimum- and Conventional-Tillage Peanuts (Arachis hypogaea)

Weed Science ◽  
1990 ◽  
Vol 38 (3) ◽  
pp. 243-248 ◽  
Author(s):  
John W. Wilcut ◽  
Glenn R. Wehtje ◽  
T. Vint Hicks
Keyword(s):  
Weed Control ◽  
Field Experiments ◽  
Conventional Tillage ◽  
Tillage Systems ◽  
Minimum Tillage ◽  
Net Returns ◽  
Pitted Morningglory ◽  
Tillage System ◽  
Peanut Production ◽  
Control Equivalent

Field experiments were conducted from 1985 to 1987 to evaluate herbicide systems for minimum-tillage and conventional-tillage peanut production. While acceptable weed control could be achieved in both tillage systems, minimum-tillage systems generally had to be more herbicide intensive. Preemergence or preplant-incorporated within-the-row applications of either ethalfluralin or pendimethalin plus postemergence applications of paraquat and sethoxydim provided Texas panicum control equivalent to preplant-incorporated applications of ethalfluralin or pendimethalin. Early-postemergence paraquat applications improved Florida beggarweed and pitted morningglory control in conventional-tillage systems at least 15% compared to the same systems without paraquat Control of bristly starbur and sicklepod in conventional-tillage systems did not increase with paraquat application. Broadleaf weed control did not differ between tillage systems, except pitted morningglory control was lower in the minimum-tillage system. Conventional-tillage peanuts produced yields 800 to 1900 kg/ha higher, depending on herbicide system, and also provided greater net returns than minimum-tillage peanuts. The greater yield and net returns in conventional- versus minimum-tillage systems were not attributed to weed control or disease problems.

scholarly journals CHANGES IN CHEMICAL PROPERTIES BY USE AND MANAGEMENT OF AN OXISOL IN THE AMAZON BIOME

2017 ◽  
Vol 30 (2) ◽  
pp. 278-286 ◽  
Author(s):  
MARCOS RODRIGUES ◽  
FLÁVIO HENRIQUE SILVEIRA RABÊLO ◽  
HEBER AUGUSTO DE CASTRO ◽  
DELMONTE ROBOREDO ◽  
MARCO ANTONIO CAMILLO DE CARVALHO ◽  
...  
Keyword(s):  
Organic Matter ◽  
Soil Fertility ◽  
Organic Matter Content ◽  
Conventional Tillage ◽  
Forest Area ◽  
Management Systems ◽  
Native Forest ◽  
Minimum Tillage ◽  
Native Pasture ◽  
Tillage System

ABSTRACT The proper soil use and management are essential for a sustainable production, thus the pursuit for systems that minimize damages to the environment and improve soil fertility is continuous. The objective of this study was to evaluate changes in soil fertility by the use and management of an Oxisol (Latossolo Vermelho-amarelo, SiBCS) in the Amazon biome. The soil uses and management systems evaluated were native forest, native pasture, minimum tillage system and conventional tillage system. The chemical atributes of the soil layers 0.00-0.10, 0.10-0.20, 0.20-0.30 and 0.30-0.40 m were evaluated. The soil pH (CaCl2) and the contents of organic matter, available phosphorus and exchangeable potassium, calcium, magnesium and aluminum were evaluated and the saturation by Al, effective cation exchange capacity and soil potential were determined. The highest pH values were found in the native pasture area, and the highest exchangeable aluminum contents were found in the layers 0.00-0.10 and 0.10-0.20 m of the conventional tillage system. The highest phosphorus availability was found in the layer 0.00-0.10 m of the native forest area. The highest potassium availability was found in the minimum tillage system. The lowest calcium and magnesium values were found in the layers 0.00-0.10 and 0.10-0.20 m of the conventional tillage system. The highest soil organic matter content was found in the layer 0.00-0.10 m of the native forest area. The nutrient availability for plants decreases in soils managed using the conventional tillage system. Soil uses and management systems of little soil disturbance are recommended to minimize environmental degradation in the Amazon biome.

scholarly journals The Influence of the Tillage System and Fertilization on Soybean Yield at ARDS Turda, 2015-2017

2019 ◽  
Vol 76 (2) ◽  
pp. 93
Author(s):  
Alina ŞIMON ◽  
Felicia CHEŢAN ◽  
Cornel CHEŢAN ◽  
Marius BĂRDAŞ ◽  
Valeria DEAC
Keyword(s):  
Root Nodules ◽  
Conventional Tillage ◽  
Climatic Conditions ◽  
Raw Material ◽  
Rhizobium Japonicum ◽  
Minimum Tillage ◽  
System A ◽  
Significant Difference ◽  
Tillage System ◽  
Factor C

Soybean is currently one of the most important agricultural crops being used in human and animal nutrition, as a raw material for industry but also has agro-phyto-technical importance because it contributes to the raising of soil fertility by fixing atmospheric nitrogen by symbiosis between soybeans and Rhizobium japonicum bacteria, which forms root-nodules. To achieve the aims, a poly-factorial experience has been placed during the period 2015-2017 at ARDS Turda, with the factors: Factor A - the tillage system (a1 the classical tillage system by plowing with the return of the furrow and a2 the minimum tillage system, chisel variant; factor B- the fertilization (b1-N20P20K0 100 kg/ha, applied simultaneously with sowing, b2-N20P20K0 100 kg/ha, applied simultaneously with the sowing + N20P20K0 100 kg/ha, applied in the 4-6 leaves phenophase, b3-N20P20K0 100 kg/ha applied simultaneously with sowing + N30 100 kg/ha, applied in the 4-6 leaves phenophase and b4-N20P20K0 100 kg/ha applied simultaneously with sowing + N20 100 kg/ha, applied in the 4-6 leaves phenophase, factor C-climatic conditions in the experimental years (c1-2015; c2-2016; c3-2017). The soybean variety studied was Malina TD. Following the application of the minimum tillage system, the yield decreases with a significant difference of 86 kg/ha compared to the conventional tillage system. A very significant influence in the yield of superior quantitative yields is fertilization, in the three variants where the supplementary fertilization was applied, there were obtained very significant yield increases of over 199 kg/ha compared to the control variant which produced a yield of 2373 kg/ha.

scholarly journals Intercepted solar radiation by maize crops subjected to different tillage systems and water availability levels

2010 ◽  
Vol 45 (12) ◽  
pp. 1331-1341 ◽  
Author(s):  
Homero Bergamaschi ◽  
Genei Antonio Dalmago ◽  
João Ito Bergonci ◽  
Cleusa Adriane Menegassi Bianchi Krüger ◽  
Bruna Maria Machado Heckler ◽  
...  
Keyword(s):  
Solar Radiation ◽  
Leaf Area Index ◽  
Extinction Coefficient ◽  
Water Availability ◽  
Conventional Tillage ◽  
No Tillage ◽  
Tillage Systems ◽  
Area Index ◽  
Tillage System ◽  
Crop Cycle

The objective of this work was to evaluate changes in the photosynthetic photon flux density (PPFD) interception efficiency and PPFD extinction coefficient for maize crop subjected to different soil tillage systems and water availability levels. Crops were subjected to no-tillage and conventional tillage systems combined with full irrigation and non-irrigation treatments. Continuous measurements of transmitted PPFD on the soil surface and incoming PPFD over the canopy were taken throughout the crop cycle. Leaf area index and soil water potential were also measured during the whole period. Considering a mean value over the maize cycle, intercepted PPFD was higher in the conventional tillage than in the no-tillage system. During the initial stages of plants, intercepted PPFD in the conventional tillage was double the PPFD interception in the no-tillage treatment. However, those differences were reduced up to the maximum leaf area index, close to tasseling stage. The lowest interception of PPFD occurred in the conventional tillage during the reproductive period, as leaf senescence progressed. Over the entire crop cycle, the interception of PPFD by the non-irrigated plants was about 20% lower than by the irrigated plants. The no-tillage system reduced the extinction coefficient for PPFD, which may have allowed a higher penetration of solar radiation into the canopy

scholarly journals The Influence of Tillage Systems, Fertilizers and Plant Protection on Biological Indicators of Fertility of Soddy Podzolic Gleyic Soil

2020 ◽  
Author(s):  
Е.В. Чебыкина
Keyword(s):  
Soil Fertility ◽  
Plant Protection ◽  
Close Correlation ◽  
Biological Indicators ◽  
Chicken Manure ◽  
Mineral Fertilizers ◽  
Tillage Systems ◽  
Tillage System ◽  
Fertilizer System ◽  
Spring Rape

Представлены результаты исследований агроэкологической оценки разных систем обработки и видов удобрений при выращивании ярового рапса в условиях агроландшафта с дерново-подзолистыми глееватыми почвами. При проведении полевых и лабораторных опытов в 2019 году изучалось последействие заделки органо-минерального субстрата (был внесён в почву в 2017 г.), состоящего из обеззараженного куриного помёта и отработанных вегетационных матов, на биологические показатели плодородия почвы. В ходе исследований было установлено, что заделка органо-минерального субстрата способствует поддержанию почвенного плодородия. Так, содержание органического вещества увеличилось на 10,8% при отвальной системе обработки и на 7,8% – при поверхностной, по сравнению с контролем без удобрений. Существенного влияния изучаемых систем обработки почвы и удобрений на активность почвенного фермента каталаза и целлюлозразлагающих микроорганизмов обнаружено не было. Активность каталазы в большей степени определялась системой удобрений, их последействие проявилось в тенденции к снижению ферментативной активности. Урожайность ярового рапса зависела от биологических показателей плодородия почвы, в ходе корреляционно-регрессионного анализа были выявлены средние по тесноте взаимосвязи, в частности с активностью целлюлозоразлагающих микроорганизмов (r = –0,5693) и фермента каталаза (r = 0,5457). Между изучаемыми биологическими показателями плодородия почвы не обнаружено тесных корреляционных связей. К существенному снижению урожайности ярового рапса (на 13,4%) приводило проведение поверхностной системы обработки почвы в сравнении с отвальной. Применение органо-минерального субстрата самостоятельно и особенно в сочетании с минеральными удобрениями обеспечивало достоверную прибавку урожая зелёной массы ярового рапса. The results of researches of the agroecological assessment of different tillage systems and types of fertilizers when growing spring rape in conditions of cultivated land with soddy podzolic gleyic soils are presented. When conducting field and laboratory experiments in 2019, the afteraction of covering of the organo-mineral substrate (it was introduced into the soil in 2017), consisting of disinfected chicken manure and worked vegetation mats on biological indicators of soil fertility was studied. As part of study it was found that covering of the organo-mineral substrate contributes to maintaining soil fertility. Thus, the content of organic matter increased by 10.8% with the moldboard tillage and by 7.8% with the surface one compared with the control without fertilizers. No significant effect of the tillage systems and fertilizers under study on the activity of the soil enzyme catalase and cellulose decomposing microorganisms was found. Catalase activity was largely determined by the fertilizer system, their aftereffect was manifested in a tendency to a decrease in enzymatic activity. The yield of spring rape depended on the biological indicators of soil fertility, during the correlation and regression analysis medium-sized relationships were found, in particular, with the activity of cellulose decomposing microorganisms (r = –0.5693) and the enzyme catalase (r = 0.5457). Close correlation was not found between the studied biological indicators of soil fertility. A significant decrease in the yield of spring rape (by 13.4%) was caused by a surface tillage system in comparison with the moldboard one. The use of organic-mineral substrate independently and especially in combination with mineral fertilizers provided a reliable increase in the yield of green mass of spring rape.

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