scholarly journals Role of soil liming in increasing crop yields in crop rotation

2020 ◽  
Vol 547 ◽  
pp. 012037
Author(s):  
V T Sinegovskaya ◽  
E V Banetskaya ◽  
B S Boiarskii ◽  
M O Sinegovskii ◽  
K A Nikulchev
Keyword(s):  
Crop Rotation ◽  
Crop Yields ◽  
Soil Liming

scholarly journals Modern systems of agriculture and a new interpretation of crop rotation value of agricultural crops

2020 ◽  
Vol 4 (2) ◽  
pp. 319-329
Author(s):  
M. S. Shevchenko ◽  
L. M. Decyatnik ◽  
K. A. Derevenets-Shevchenko
Keyword(s):  
Crop Rotation ◽  
System Analysis ◽  
Crop Yields ◽  
Spring Barley ◽  
Steppe Zone ◽  
Crop Rotations ◽  
Main Motive ◽  
New Interpretation ◽  
Favorable Conditions

Based on a broad experimental study of crop rotation productivity in different locations of the Steppe zone, a correlative model for estimating the role of predecessors in the formation of post-crop yields has been developed. The connection between quality of agrotechnologies and change of degree of crop rotation competitiveness of culture is presented. A retrospective analysis of the efficiency of farming and crop rotation systems showed that the constant improvement of varieties and hybrids of crops and technologies for their cultivation created objective agrobiological grounds for reassessment of predecessors in crop rotation. The main motive for this transformation was that in modern agricultural systems, high-potential biotechnological resources allow to obtain higher crop yields on the worst predecessors than on the best in the past. In order to universalize the evaluation of crop rotation efficiency and model their productivity, it is proposed to introduce a crop rotation depression coefficient, which shows the share of yield remaining after individual predecessors compared to its baseline level after black fallow. The most favorable conditions developed after crops with a coefficient above 0,80 – winter wheat, barley, rape, rye, spring barley, oats. At the same time, the development of post-rotational crops was significantly inhibited by sunflower, corn for grain and silage, beets, sorghum and soybeans, their depression coef-ficient was 0,66–0,78. The proposed methodology of system analysis for the assessment of predecessors opens wider opportunities for the formation of adapted crop rotations, optimization the set of crops to market requirements, formation important adjustments to crop rotations in extreme conditions, regulation crop rotation productivity taking into account agrotechnological modernization. Keywords: crop rotation, tillage, fertilizers, crops, grain, predecessors, harvest, minimization.

Productivity and quality of soybean seeds with different fertilization on podzolized chernozem

2020 ◽  
Vol 1 (97) ◽  
pp. 136-144
Author(s):  
H.M. Hospodarenko ◽  
◽  
I.V. Prokopchuk ◽  
K. P. Leonova ◽  
V.P. Boyko
Keyword(s):  
Crop Rotation ◽  
Crop Yields ◽  
Spring Barley ◽  
Mineral Fertilizer ◽  
Nitrogen Fertilizers ◽  
Mineral Fertilizers ◽  
Forest Steppe ◽  
Soybean Seeds ◽  
Different Doses

The productivity of agricultural crops is the most variable and integral indicator of their vital activity, which accumulates their genetic potential, soil fertility, weather conditions and components of agricultural technology. Soybean under optimal growing conditions (the reaction of the soil is close to neutral, sufficient phosphorus and potassium nutrition, the use of nitraginization) assimilates from the air about 70 % of the total nitrogen requirement. Therefore, it is believed that it is enough to apply only a starting dose of nitrogen fertilizers (20–40 kg/ha a. s.), to get a high yield with good indicators of grain quality. The results of studies of the influence of long-term (8 years) application of different doses and ratios of fertilizers in field crop rotation on podzolized chernozem in the conditions of the Right -Bank Forest-Steppe of Ukraine on the yield and quality of soybean seeds preceded by spring barley were presented. It was found that crop yields could be increased by 18–77 % owing to different doses, ratios and types of fertilizers. The highest indicators of seed yields for three years of the research (3,02 t/ha) were obtained under the application of mineral fertilizers at a dose of N110P60K80 per 1 ha of crop rotation area, including under soybean – N60P60K60. Exclusion of the nitrogen component from the complete fertilizer (N60P60K60) reduced its yield by 26 %, phosphorus – by 17, and potassium by 11 %. There was no significant decrease in soybean yield in the variant of the experiment with a decrease in the proportion of potassium in the composition of complete mineral fertilizer (N60P60K30) for three years of study. The largest mass of 1000 soybean seeds was formed at doses of N60К60 fertilizers, and their protein content — under the application of complete mineral fertilizer in doses of N60P60K60 and N60P60K30.

ISSUES OF GREENING THE LAND USE SYSTEM IN THE RUSSIAN FEDERATION

2020 ◽  
Keyword(s):  
Crop Rotation ◽  
Crop Yields ◽  
Plant Protection ◽  
Arable Land ◽  
Farming System ◽  
Perennial Grasses ◽  
Soil Protection ◽  
Anthropogenic Pressure ◽  
Strict Adherence ◽  
The Creation

Soil protection in agrolandscapes is especially necessary in conditions of intensification of production and increasing anthropogenic pressure on them. This complex should fit into the landscape farming system. The more intensive the load on the land in the farm, the higher the level of soil protection against destruction. The article notes that raising soil fertility, increasing crop yields and ecological environmental improvement are possible only on the basis of agrolandscape farming system, which allows to establish the correct ratio of arable land, meadows and forests. The transition to such a system of agriculture requires: development of a project for agrolandscape land management with a set of anti-erosion measures for each farm; adjusting the structure of sown areas taking into account market conditions, that is, increasing the area of productive crops in demand (winter and spring wheat, perennial grasses), which in combination with occupied and green manure pairs determine the structure of biologized crop rotation; widespread use of legumes (peas, vetch) as factors in the biologization of agriculture. The efficiency of expanding the area of perennial grasses to 25 % of arable land in some areas of the Non-Chernozem region and the Belgorod region is shown. Here, techniques that increase the efficiency of arable land are based on strict adherence to crop rotation with legumes, the use of adaptive varieties, and the use of biologized fertilizer and plant protection systems. It is noted that the creation of a system of shelterbelts makes it possible to reduce the cost of planting and growing them in comparison with single forest belts and what is very important for farmers is to sharply increase the return on their exploitation in the form of increased increases in crop yields. The creation of forest-sized landscapes will improve the environmental conditions for the cultivation of crops.

Assessment of the Role of Different Soil Properties on Crust Strength by Linear Regression Models

2019 ◽  
Vol 6 (04) ◽  
Author(s):  
MINAKSHI SERAWAT ◽  
V K PHOGAT ◽  
ANIL Abdul KAPOOR ◽  
VIJAY KANT SINGH ◽  
ASHA SERAWAT
Keyword(s):  
Hydraulic Conductivity ◽  
Soil Properties ◽  
Crop Yields ◽  
Modulus Of Rupture ◽  
Silty Clay ◽  
Linear Regression Models ◽  
Wide Range ◽  
Dispersion Ratio ◽  
Crust Strength

Soil crust strength influences seedling emergence, penetration and morphology of plant roots, and, consequently, crop yields. A study was carried out to assess the role of different soil properties on crust strength atHisar, Haryana, India. The soil samples from 0-5 and 5-15 cm depths were collected from 21 locations from farmer’s fields, having a wide range of texture.Soil propertieswere evaluated in the laboratory and theirinfluence on the modulus of rupture (MOR), which is the measure of crust strength, was evaluated.The MOR of texturally different soils was significantly correlated with saturated hydraulic conductivity at both the depths. Dispersion ratio was found to decrease with an increase in fineness of the texture of soil and the lowest value was recorded in silty clay loam soil,which decreased with depth. The modulus of rupture was significantly negatively correlative with the dispersion ratio.There was no role of calcium carbonate in influencing the values of MOR of soils. Similarly,the influence of pH, EC and SAR of soil solution on MOR was non-significant.A perusal of thevalues of the correlations between MOR and different soil properties showed that the MOR of soils of Haryana are positively correlated with silt + clay (r = 0.805) followed by water-stable aggregates (r = 0.774), organic carbon (r = 0.738), silt (r = 0.711), mean weight diameter (r = 0.608) and clay (r = 0.593) while negatively correlated with dispersion ratio (r = - 0.872), sand (r = -0.801) and hydraulic conductivity (r = -0.752) of soils.

scholarly journals The crucial role of mulch to enhance the stability and resilience of cropping systems in southern Africa

2021 ◽  
Vol 41 (2) ◽  
Author(s):  
Blessing Mhlanga ◽  
Laura Ercoli ◽  
Elisa Pellegrino ◽  
Andrea Onofri ◽  
Christian Thierfelder
Keyword(s):  
Crop Rotation ◽  
Southern Africa ◽  
Cropping Systems ◽  
Conservation Agriculture ◽  
Conventional Tillage ◽  
Yield Stability ◽  
No Tillage ◽  
The Stability ◽  
Stability And Resilience

AbstractConservation agriculture has been promoted to sustainably intensify food production in smallholder farming systems in southern Africa. However, farmers have rarely fully implemented all its components, resulting in different combinations of no-tillage, crop rotation, and permanent soil cover being practiced, thus resulting in variable yield responses depending on climatic and soil conditions. Therefore, it is crucial to assess the effect of conservation agriculture components on yield stability. We hypothesized that the use of all three conservation agriculture components would perform the best, resulting in more stable production in all environments. We evaluated at, eight trial locations across southern Africa, how partial and full implementation of these components affected crop yield and yield stability compared with conventional tillage alone or combined with mulching and/or crop rotation. Grain yield and shoot biomass of maize and cowpea were recorded along with precipitation for 2 to 5 years. Across different environments, the addition of crop rotation and mulch to no-tillage increased maize grain by 6%, and the same practices added to conventional tillage led to 13% yield increase. Conversely, adding only mulch or crop rotation to no-tillage or conventional tillage led to lower or equal maize yield. Stability analyses based on Shukla’s index showed for the first time that the most stable systems are those in which mulch is added without crop rotation. Moreover, the highest yielding systems were the least stable. Finally, additive main effects and multiplicative interaction analysis allowed clarifying that mulch added to no-tillage gives stable yields on sandy soil with high rainfall. Similarly, mulch added to conventional tillage gives stable yield on sandy soil, but under low rainfall. This is the first study that highlighted the crucial role of mulch to enhance the stability and resilience of cropping systems in southern Africa, supporting their adaptability to climate change.

The Role of Wastewater Reuse in Water Resources Management in Israel

1991 ◽  
Vol 23 (10-12) ◽  
pp. 2081-2089 ◽  
Author(s):  
G. Shelef
Keyword(s):  
Crop Rotation ◽  
Water Resources Management ◽  
Agricultural Sector ◽  
Wastewater Reuse ◽  
Total Water ◽  
Quality Requirements ◽  
Resources Management ◽  
Effluent Quality ◽  
Tel Aviv

Wastewater reuse is considered as a major vital water resource in Israel with an annual flow of 420 million m planned for the year 2010 constituting 19% of the total water supply and about one third of the overall water allocated to the agricultural sector. The trend is for less crop restriction and wider crop rotation and thus higher effluent quality requirements. The economical considerations are favourable even with the need for seasonal storage and extra treatment. A brief description of the major wastewater reuse schemes, i.e. the Dan Region (Greater Tel-Aviv) and Greater Haifa - Tishlovet Hakishon is also given.

Influence of Weed Management Practices and Crop Rotation on Glyphosate-Resistant Horseweed (Conyza canadensis) Population Dynamics and Crop Yield-Years III and IV

Weed Science ◽  
2009 ◽  
Vol 57 (4) ◽  
pp. 417-426 ◽  
Author(s):  
Vince M. Davis ◽  
Kevin D. Gibson ◽  
Thomas T. Bauman ◽  
Stephen C. Weller ◽  
William G. Johnson
Keyword(s):  
Population Dynamics ◽  
Crop Rotation ◽  
Crop Yield ◽  
Cover Crops ◽  
Weed Management ◽  
Management Practices ◽  
Plant Density ◽  
Crop Yields ◽  
Management Systems ◽  
No Till

Horseweed is an increasingly common and problematic weed in no-till soybean production in the eastern cornbelt due to the frequent occurrence of biotypes resistant to glyphosate. The objective of this study was to determine the influence of crop rotation, winter wheat cover crops (WWCC), residual non-glyphosate herbicides, and preplant application timing on the population dynamics of glyphosate-resistant (GR) horseweed and crop yield. A field study was conducted from 2003 to 2007 in a no-till field located at a site that contained a moderate infestation of GR horseweed (approximately 1 plant m−2). The experiment was a split-plot design with crop rotation (soybean–corn or soybean–soybean) as main plots and management systems as subplots. Management systems were evaluated by quantifying in-field horseweed plant density, seedbank density, and crop yield. Horseweed densities were collected at the time of postemergence applications, 1 mo after postemergence (MAP) applications, and at the time of crop harvest or 4 MAP. Viable seedbank densities were also evaluated from soil samples collected in the fall following seed rain. Soybean–corn crop rotation reduced in-field and seedbank horseweed densities vs. continuous soybean in the third and fourth yr of this experiment. Preplant herbicides applied in the spring were more effective at reducing horseweed plant densities than when applied in the previous fall. Spring-applied, residual herbicide systems were the most effective at reducing season-long in-field horseweed densities and protecting crop yields since the growth habit of horseweed in this region is primarily as a summer annual. Management systems also influenced the GR and glyphosate-susceptible (GS) biotype population structure after 4 yr of management. The most dramatic shift was from the initial GR : GS ratio of 3 : 1 to a ratio of 1 : 6 after 4 yr of residual preplant herbicide use followed by non-glyphosate postemergence herbicides.

scholarly journals Soil properties after 36 years of N fertilization under continuous corn and corn-soybean management

2021 ◽  
Author(s):  
Nakian Kim ◽  
Gevan D. Behnke ◽  
María B. Villamil
Keyword(s):  
Soil Properties ◽  
Crop Rotation ◽  
Crop Yields ◽  
Inorganic Nitrogen ◽  
Block Design ◽  
N Fertilization ◽  
Total Carbon ◽  
Nitrous Oxide Emissions ◽  
Continuous Corn

Abstract. Modern agricultural systems rely on inorganic nitrogen (N) fertilization to enhance crop yields, but its overuse may negatively affect soil properties. Our objective was to investigate the effect of long-term N fertilization on key soil properties under continuous corn [Zea mays L.] (CCC) and both the corn (Cs) and soybean [Glycine max L. Merr.] (Sc) phases of a corn-soybean rotation. Research plots were established in 1981 with treatments arranged as a split-plot design in a randomized complete block design with three replications. The main plot was crop rotation (CCC, Cs, and Sc), and the subplots were N fertilizer rates of 0 kg N ha−1 (N0, controls), and 202 kg N ha−1, and 269 kg N ha−1 (N202, and N269, respectively). After 36 years and within the CCC, the yearly addition of N269 compared to unfertilized controls significantly increased cation exchange capacity (CEC, 65 % higher under N269) and acidified the top 15 cm of the soil (pH 4.8 vs. pH 6.5). Soil organic matter (SOM) and total carbon stocks (TCs) were not affected by treatments, yet water aggregate stability (WAS) decreased by 6.7 % within the soybean phase of the CS rotation compared to CCC. Soil bulk density (BD) decreased with increased fertilization by 5 % from N0 to N269. Although ammonium (NH4+) did not differ by treatments, nitrate (NO3−) increased eight-fold with N269 compared to N0, implying increased nitrification. Soils of unfertilized controls under CCC have over twice the available phosphorus level (P) and 40 % more potassium (K) than the soils of fertilized plots (N202 and N269). On average, corn yields increased 60 % with N fertilization compared to N0. Likewise, under N0, rotated corn yielded 45 % more than CCC; the addition of N (N202 and N269) decreased the crop rotation benefit to 17 %. Our results indicated that due to the increased level of corn residues returned to the soil in fertilized systems, long-term N fertilization improved WAS and BD, yet not SOM, at the cost of significant soil acidification and greater risk of N leaching and increased nitrous oxide emissions.

Results of experimental work on the application of the aquacrop rotation practice in fish ponds in Iraq

2021 ◽  
pp. 56-67
Author(s):  
Farhan Yasin Hamed Farhan Yasin Hamed ◽  
Lydia Mikhailovna Vasilyeva ◽  
Natalia Viktorovna Sudakova ◽  
Ali Attala Muheisin ◽  
Adelia Zakirovna Anokhina
Keyword(s):  
Crop Rotation ◽  
Production Efficiency ◽  
Crop Yields ◽  
Fish Farming ◽  
Fish Ponds ◽  
Average Value ◽  
Fish Breeding ◽  
Feed Costs ◽  
The Cost ◽  
Fish Productivity

The use of the crop rotation method in fish farming makes it possible to increase fish productivity and crop yields in ponds. In the countries of the Middle East, in recent years, the Aqua Crop rotation practice has been developing, in particular, the consistent cultivation of fish and rice in fish ponds, which allows eliminating the contradictions between these crops and increasing production efficiency. In Iraq, an experiment was carried out on the variable cultivation of rice and carp in fish ponds for four years, with the aim of introducing this practice into the country’s agriculture. Four ponds, each with an area of 7.5 hectares, were involved. The research was carried out in two variants: in experiment No.1 rice was grown in the first year, fish in the second, then rice again and in the fourth year — fish, in the second experiment, on the contrary, at the beginning of the fish, then rice, etc. The fish-breeding season lasted 9 months (March to November). Fish-breeding indicators were studied in detail: survival rate, feed costs, fish productivity, the results of rice cultivation were judged by yield. In addition, indicators of economic efficiency were determined according to a simplified scheme. The results indicate that, in general, fish-breeding indicators turned out to be higher when growing fish in ponds after rice, so fish productivity increased by almost 30% with an average value of 3.9 t/ha, feed costs decreased, while rice yield increased by 15–16% and averaged 3.6 t/ha. The best fish-breeding indicators were obtained in the second experiment after rice was grown in the ponds for two years. Economic calculations confirmed the advantages of using the aquacrop rotation practice, so in the second experiment the cost of marketable fish decreased by 10%, and the profitability increased by almost 30%.

Regional factors of grain crop yield growth in the dynamics of recent years

2021 ◽  
pp. 29-36
Author(s):  
Yuriy P. Bondarenko ◽  
Keyword(s):  
Crop Yield ◽  
Crop Yields ◽  
Methodological Approach ◽  
Climatic Conditions ◽  
Grain Production ◽  
Fixed Assets ◽  
Production Complex ◽  
Grain Crop ◽  
Regional Factors

In view of the significant increase in grain production in Russia, a methodological approach is proposed to analyze the significance of regional factors of grain crop yield growth in the country in recent years, especially against the background of the lack of expansion of acreage under grain crops. Based on the results of the calculations, the effectiveness of the influence of climatic, financial, infrastructural and production factors on the growth of grain yield was described. It is concluded that various factors had different effects on the growth of grain crop yields in regions with high-, medium - and low-intensity grain production complex. The role of reducing the influence of financial factors on the growth of grain yields and a sharp increase in the role of agro-climatic conditions is noted. The revealed trend of increasing depreciation of fixed assets of agriculture as a whole is particularly emphasized, with a slight increase in the volume of their renewal and modernization in the leading regions in terms of grain crop yield growth. Without taking appropriate measures to reduce the depreciation of fixed assets in the near future, this will result in a sharp decline in the achieved volumes of grain production in the country.

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