DEPENDENCE OF SPRING WHEAT YIELD ON HYDROTHERMIC CONDITIONS IN THE SARATOV REGION

2021 ◽  
Vol 31 (4) ◽  
pp. 467-473
Author(s):  
E.I. Ormeli
Keyword(s):  
Spring Wheat ◽  
Lead Time ◽  
Wheat Yield ◽  
Growing Season ◽  
Field Studies ◽  
Stationary Field ◽  
Saratov Region ◽  
Prognostic Equation ◽  
Phases Of Development

Using long-term stationary field studies on the phases of development of spring wheat, a prognostic equation for calculating the yield of a given crop depending on the duration of the growing season with a monthly lead time was derived. Taking into account the hydrothermic factors of the Saratov region, the prognostic equation of the multiple function of the yield of spring wheat from the amount of precipitation for April-May, the average air temperature in May, the amount of precipitation in June, the amount of precipitation in July, and the duration of the growing season was calculated.

scholarly journals Phytosanitary and economic foundations of melilot in the southern forest-steppe of Novosibirsk region

2018 ◽  
pp. 43-49 ◽  
Author(s):  
S. N. Posazhennikov ◽  
E. Iu. Toropova ◽  
О. A. Kazakova
Keyword(s):  
Spring Wheat ◽  
Root Rot ◽  
Biological Effects ◽  
Wheat Yield ◽  
Economic Assessment ◽  
Growing Season ◽  
Bipolaris Sorokiniana ◽  
Forest Steppe ◽  
Novosibirsk Region ◽  
Fusarium Fungi

The research aims at evaluation of biological and economic efficiency of melilot cultivation in the southern forest-steppe of Novosibirsk region. The research was conducted in 2010 – 2016 by means of conventional methods. The biological effects of melilot in treatment of wheat underground organs from root rot was 13.9-38.8% (average 31.3%) in the beginning of growing season; in the end of the growing season it was 32.1-66% (average 43%) in comparison with recultivation of spring wheat. The pathogenic complex of root rot consisted of B. sorokiniana (18.343%) and Fusarium fungi (63.9-81.7%). The authors found out F. gibbosum, F. sporotrichioides,F. oxysporum, F. avenaceum, F. solani.mong fungi among Fusarium. The research revealed domination of Trichoderma fungi among the antagonistic species. The effect of melilot as a fore crop in increasing spring wheat yield was observed as 31-68,7% (average 44%) with a simultaneous decrease in Bipolaris sorokiniana grain population and Fusarium fungi in 2 times in comparison with re-cultivation of spring wheat. The authors highlight that economic evaluation of melilot cultivation in the southern forest-steppe of Novosibirsk region is 80.7% profitable in case melilot is grown as a fore crop of spring wheat. IThe authors observed reducing grain costs on 53.4 RUB/ hwt compared to recultivation of wheat. Comprehensive economic assessment of melilot cultivation showed higher profitability caused by sale of honey and haylage harvesting.

Analyzing Temperature and Precipitation Influences on Yield Distributions of Canola and Spring Wheat in Saskatchewan

2017 ◽  
Vol 56 (4) ◽  
pp. 897-913 ◽  
Author(s):  
Ting Meng ◽  
Richard Carew ◽  
Wojciech J. Florkowski ◽  
Anna M. Klepacka
Keyword(s):  
Crop Yield ◽  
Spring Wheat ◽  
Climate Model ◽  
Crop Yields ◽  
Wheat Yield ◽  
Growing Season ◽  
Weather Data ◽  
Growth Stages ◽  
Yield Distribution ◽  
The Impact

AbstractThe IPCC indicates that global mean temperature increases of 2°C or more above preindustrial levels negatively affect such crops as wheat. Canadian climate model projections show warmer temperatures and variable rainfall will likely affect Saskatchewan’s canola and spring wheat production. Drier weather will have the greatest impact. The major climate change challenges will be summer water availability, greater drought frequencies, and crop adaptation. This study investigates the impact of precipitation and temperature changes on canola and spring wheat yield distributions using Environment Canada weather data and Statistics Canada crop yield and planted area for 20 crop districts over the 1987–2010 period. The moment-based methods (full- and partial-moment-based approaches) are employed to characterize and estimate asymmetric relationships between climate variables and the higher-order moments of crop yields. A stochastic production function and the focus on crop yield’s elasticity imply choosing the natural logarithm function as the mean function transformation prior to higher-moment function estimation. Results show that average crop yields are positively associated with the growing season degree-days and pregrowing season precipitation, while they are negatively affected by extremely high temperatures in the growing season. The climate measures have asymmetric effects on the higher moments of crop yield distribution along with stronger effects of changing temperatures than precipitation on yield distribution. Higher temperatures tend to decrease wheat yields, confirming earlier Saskatchewan studies. This study finds pregrowing season precipitation and precipitation in the early plant growth stages particularly relevant in providing opportunities to develop new crop varieties and agronomic practices to mitigate climate changes.

Yield Loss Assessment for Spring Wheat (Triticum aestivum) Infested with Canada Thistle (Cirsium arvense)

Weed Science ◽  
1992 ◽  
Vol 40 (4) ◽  
pp. 590-598 ◽  
Author(s):  
William W. Donald ◽  
Mohammad Khan
Keyword(s):  
Linear Regression ◽  
Spring Wheat ◽  
Yield Loss ◽  
Wheat Yield ◽  
Growing Season ◽  
Shoot Density ◽  
Regression Equations ◽  
Loss Assessment ◽  
Canada Thistle ◽  
Yield Loss Assessment

In eight of nine trials spanning 5 yr, relative yield of semidwarf hard red spring wheat (yield expressed as a percent of estimated weed-free yield) decreased linearly as Canada thistle shoot density increased when measured in late July to early August in the northern Great Plains. Differences between yield loss assessment (YLA) equations could not be distinguished statistically between no-tillage and chisel-plowed production systems. Multiple linear regression equations of relative wheat yield versus wheat density plus Canada thistle shoot density accounted for more variability in YLA equations than simple linear regression equations of wheat yield versus Canada thistle shoot density alone. Estimated weed-free wheat yield and negative slope (b) for yield loss assessment equations increased as cumulative growing-season (April to August) rainfall increased. Thus, relative wheat yield was decreased more by increasing Canada thistle density (slope b became more negative) in years of greater growing-season rainfall.

scholarly journals THE REMOVAL OF PHOSPHORUS, THE GRAIN YIELD OF SPRING WHEAT AT MINIMIZATION OF PRIMARY TILLAGE

2018 ◽  
pp. 81-84
Author(s):  
V. E. Sineshekov ◽  
G. I. Tkachenko
Keyword(s):  
Field Experiment ◽  
Grain Yield ◽  
Crop Rotation ◽  
Spring Wheat ◽  
Mechanical Treatment ◽  
Stationary Field ◽  
Primary Tillage

The results of long-term researches received in stationary field experiment on the Chernozem leached by the average loam of the Novosibirsk Ob region are presented. It is established that the studied systems of basic mechanical treatment did not affect the phosphorus alienation by the grain of spring wheat of Novosibirsk 29. Chemicals significantly increased the removal of this element, which was most clearly seen in the final wheat in the crop rotation «steam - wheat - wheat - wheat».

scholarly journals MEFOSPHON» USAGE FOR PRODUCTION USEFUL PRODUCTS INCREASING WHEAT YIELD

2020 ◽  
Vol 14 (4) ◽  
pp. 112-116
Author(s):  
Fatih Sibagatullin ◽  
Zul'fiya Haliullina ◽  
Andrey Petrov ◽  
Kirill Sinyashin ◽  
Almaz Ganiev
Keyword(s):  
Spring Wheat ◽  
Unit Length ◽  
Wheat Yield ◽  
Field Tests ◽  
Field Studies ◽  
Biologically Active ◽  
Chicken Manure ◽  
Hazard Class ◽  
The Republic ◽  
Productivity Indicators

The article presents the results of the practical application of products obtained from waste from poultry farming and the oil industry using the biologically active drug “Mefosfon”. Field tests using an aqueous solution of “Mefosfon” at extremely low concentrations (10-6 - 10-8%) made it possible to obtain “Kompost UP-1” product of IV hazard class from chicken manure, and “Meliorant” product of V hazard class from drilling waste. Field studies to study the effect of products on spring wheat growth were carried out in the experimental fields of the Laishevsky district of the Republic of Tatarstan. “Kompost UP-1” and “Meliorant” were introduced under pre-sowing cultivation in the amount of 50 tons per hectare and 1.3 tons per hectare, respectively. For comparison, control plots were organized (Control). The seeds used were spring wheat of Yoldyz variety (“Kompost UP-1”) and Idelle (Meliorant). Analysis of growth and productivity indicators of plants grown in different areas showed that the application of “Meliorant” optimizes soil pH, activates mass transfer processes, and the application of “Kompost UP-1” helps to increase the content of nutrients (N, P, K). At the stage of tillering of plants in the area with “Kompost UP-1”, the average phytomass per unit length of plants was 1.8 times higher than in the control. The use of “Kompost UP-1” leads to a significant improvement in grain quality: the mass fraction of protein increased by 32%, vitreous content by 60%, and the content of crude gluten by 34%. Productivity increased and amounted to 42 kg/ha, which is 14 kg more than in the control.

Effect of Russian Thistle (Salsola iberica) Interference on Spring Wheat (Triticum aestivum)

Weed Science ◽  
1988 ◽  
Vol 36 (5) ◽  
pp. 594-598 ◽  
Author(s):  
Frank L. Young
Keyword(s):  
Spring Wheat ◽  
Plant Biomass ◽  
Wheat Yield ◽  
Field Studies ◽  
Total Biomass ◽  
Weed Density ◽  
Weed Interference ◽  
Total Plant Biomass ◽  
Total Plant ◽  
Salsola Iberica

The effect of Russian thistle density and duration of interference on spring wheat was investigated in two 3-yr field studies. In the density study, the best fit regression equation predicted a loss in spring wheat yield of 0.5, 0.5, and 0.6% in 1983, 1984, and 1985, respectively, for each percent of the total biomass contributed by Russian thistle. In 1985, when rainfall was 46% below normal, the highest weed density produced greater than 70% of the total plant biomass and reduced yields more than 50%. In contrast, in 1984 when rainfall was 65% above normal, the highest weed density produced less than 20% of the total plant biomass and reduced yields 11%. In the duration study, the predicted yield loss was 2.3 and 0.7% for 1983 and 1984, respectively, for each week of interference. In 1985, yield was not significantly reduced until after 6 weeks of interference. In both studies, spikes/m of row had the highest correlation with yield and were affected the most by weed interference.

scholarly journals Efficiency of crop rotation under long-term application of basic tillage systems

2020 ◽  
Vol 50 (4) ◽  
pp. 5-12
Author(s):  
N. V. Perfilyev ◽  
O. A. Vyushina
Keyword(s):  
Crop Rotation ◽  
Spring Wheat ◽  
Spring Barley ◽  
Wheat Yield ◽  
Soil Tillage ◽  
Annual Rainfall ◽  
Winter Rye ◽  
Net Income ◽  
Tillage Systems

An assessment is given of the long-term impact of basic tillage systems of various degrees of intensity on the yield and economic efficiency of production in the cultivation of cereals in grainfallow crop rotation. The study was carried out in 2017–2019 in a long-term stationary experiment on dark grey forest heavy loamy soil in Tyumen region. The experiments were carried out during the seventh rotation of the grain-fallow crop rotation: bare fallow – winter rye – spring wheat – spring wheat – spring barley, spread in time and space. In years with high temperatures and good rainfall, close to the average annual rainfall, resource-saving tillage systems with disk harrowing BDT-2.5 by 10-12 cm and stubble-mulch tillage by 12-14 cm with and without fertilizers led to a decrease in winter rye yield by 0.30-0.98 t/ha. Wheat yield against winter rye and barley was close to the variant with the moldboard tillage. There was a decrease in the yield of wheat sown repeatedly without the use of fertilizers by 0.04-0.40 t/ha. When fertilizers were used, the yield was equal to the control. The moldboard tillage without fertilizers was the most effective, with the net income of 14.92 thousand rubles/ha. Combined and surface soil tillage systems were similar in efficiency to the moldboard tillage (inferior by 4.3-6.6%). The most effective cultivation of cereals with the use of fertilizers was by minimum combined tillage with alternating plowing and disk harrowing, with the net income of 17.74 thousand rubles/ha, which was 13.4% higher compared to moldboard plowing. Differentiated, stubble-mulch and combined tillage brought the net income close to the control. In the remaining options studied, the net income was lower than with the moldboard tillage: without fertilizers – by 1.26-2.44 thousand rubles/ha (8.5-16.3%), with the use of fertilizers – by 1.02-1.78 thousand rubles/ha (6.5-9.0%).

Spring wheat yield trends in long-term fertility trials

1993 ◽  
Vol 73 (1) ◽  
pp. 83-92 ◽  
Author(s):  
F. Selles ◽  
R. P. Zentner
Keyword(s):  
Technology Adoption ◽  
Spring Wheat ◽  
New Technologies ◽  
Wheat Yield ◽  
N Availability ◽  
New Production ◽  
Available N ◽  
Available Water ◽  
Production Technologies

Results from a 16-yr fertility study conducted on fallow and stubble throughout southwestern Saskatchewan were used to assess the effects of technology adoption on spring wheat (Triticum aestivum L.) yields and the influence of available N on the yield effect of these new technologies. The magnitude of the residual trend (after the effect of growing-season precipitation was removed) was considered to reflect the yield increases attributable solely to the newly adopted technologies. Of the independent variables monitored, May and July precipitation and total available water on fallow plots were affected by time. Yields of wheat grown on stubble and fallow increased by an average 48 and 64 kg ha−1 yr−1, respectively. Of this annual yield increase, 52% on stubble and 78% on fallow were attributed to the adoption of new production technologies, with the remainder being explained by the trends observed in May and July precipitation. Nitrogen availability was an important factor in determining the magnitude of the trend due to technology adoption. The technology trend increased linearly from about 10 kg ha−1 yr−1, at the lowest available N levels, to about 65 kg ha−1 yr−1 when 98 kg N ha−1 was available; there were no further yield increases above this level of N. These results demonstrate that the full benefits of adopting new production technologies and more productive cultivars may not be achieved unless other growth-limiting factors, such as N availability, are removed. Further, this study demonstrates that researchers conducting long-term studies must be aware of possible time trends that may alter or obscure effects of treatments, thus making detrending procedures a basic requirement of data analyses in these types of studies. Key words: Spring wheat, yields, N fertilizer, available nitrogen, available water, trends

scholarly journals PRECURSORS AND NUTRITIENT STATUS EFFECT ON THE YIELD OF HARD SPRING WHEAT IN THE URAL ORENBURG ARID STEPPE

2020 ◽  
Vol 5 (3) ◽  
pp. 11-17
Author(s):  
Nikolai Maksyutov ◽  
Aleksandr Zorov ◽  
Vitali Skorokhodov ◽  
Dmitri Mitrofanov
Keyword(s):  
Spring Wheat ◽  
Conservation Tillage ◽  
Wheat Yield ◽  
Nutrient Status ◽  
Federal State ◽  
Experimental Production ◽  
Yield Increase ◽  
Arid Steppe ◽  
Hard Spring Wheat

The purpose of the research is the yield increase of spring wheat under arid steppe of the Orenburg pre-Urals con-ditions. Stationary long term field experience was laid on the site of the Kuibyshev's experimental production farm located in Orenburg district. Crop rotations and hard spring wheat monocrop have been studied for 30 years. The two-factor experimental design, consisting of four repetitions was developed. The results of long-term stationary studies for 1990-2019 involving five rotations and hard spring wheat monocrop are presented. Weather conditions, the precursor type and nutrient status are the major factors affecting the hard spring wheat yield. The number of hyperarid years when hard spring wheat yield was less than 5 C per 1 ha in the first rotation amounted to 1 year, in the second – 2, in the third and the fourth – 3 years, in the fifth – 5 years. A significant hard spring wheat increase in yield on the basis of fertilized ground over 30 years was noted on weedfree fallow – 6 years, conservation tillage – 10, green manured – 8, winter – 12, corn – 13 and peas – 4 years, monocrop – 10 years. The highest yield of hard spring wheat for five rotations was on weedfree fallow, conservation tillage and green manured areas (average for two nutrient status), respectively, 11.4, 11.4 and 11.6 C per 1 ha, after winter crops – 10.3 C, corn for silage – 9.3 C, peas – 9.0 C and monocrop – 7.7 C per 1 ha. The yield increase from the fertilized ground was obtained within five rotations respectively for these precursors: 0.4, 0.6, 0.6, 1.0, 0.8, 0.3 and 0.9 C from 1 ha. The research was carried out in accordance with the plan for 2020-2021developed by the Federal State Budgetary Scientific Institution «Federal Scientific Center of Biological Systems and Agrotechnologies of the Russian Acade-my of Sciences» (№ 0761-2019-0003).

scholarly journals Formation of structural elements of spring wheat productivity based on foliar application

2021 ◽  
Vol 845 (1) ◽  
pp. 012115
Author(s):  
A A Muravyov
Keyword(s):  
Spring Wheat ◽  
Foliar Application ◽  
Wheat Variety ◽  
Growing Season ◽  
Structural Elements ◽  
Peasant Farm ◽  
Spring Wheat Variety ◽  
Positive Effect ◽  
Better Than

Abstract This article provides analyzes of data of long-term production experiments (2016-2020) conducted on peasant farm enterprise Makarenko E.I. located in Volokonovsky district of the Belgorod region. The outcomes of a comprehensive assessment of applying a growth regulator and liquid micronutrient fertilizers on the Prokhorovka spring wheat variety are presented. The available data enabled to draw conclusions concerning the positive effect of the studied growth regulators and liquid micronutrients on the length of the growing season of wheat plants, which on average tended to decrease the growing season of experimental options from 2 to 13 days. Options implying the treatment of seeds and vegetative plants of spring wheat benefited productivity. On average, the spike length was greater by one plant, the number of spikelets and grain content were better than in the control. On average, over five years, the yield in the experiment varied from 2.39 t/ha to 3.04 t/ha, the increments to the control varied from Nerthus Planta Peg – 0.14 t/ha or 5.8% to Polydon N+ – 0.65 t/ha or 27.1%.

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