scholarly journals Lazurit winter wheat seeding rates in dependence to the predecessors and time of sowing in the Rostov region

2019 ◽  
Vol 20 (6) ◽  
pp. 548-556
Author(s):  
A. S. Popov
Keyword(s):  
Winter Wheat ◽  
Conflict Of Interest ◽  
Sowing Date ◽  
Ordinary Chernozem ◽  
Seeding Rate ◽  
Sowing Time ◽  
Yield Level ◽  
Rostov Region ◽  
Sowing Dates ◽  
Viable Seeds

The study is aimed at determining the optimal seeding rates for durum winter wheat Lazurit variety by various seeding dates that would provide the highest grain yield in the conditions of Rostov region. The research was carried out in 2016-2018 on ordinary chernozem after different predecessors for winter wheat (black fallow and sunflower). Studied were: the seeding rates (3 mln, 4 mln, 5 mln viable seeds per hectare after the black fallow predecessor; 5 mln, 6 mln ,7 mln viable seeds per hectare after the sunflower predecessor), and the sowing date (the 10th,20th,30th of September, the10th of October). It has been established that after the black fallow predecessor the seeding rate for durum winter wheat Lazurit variety can be reduced to 3 million viable seeds/ha on the early sowing date (September,10) and optimal sowing date (September, 20). When sowing at the end of optimal (September, 30) and acceptable (October,10) periods, the sowing rate must be 5 million viable seeds/ha. After the sunflower predecessor, on the early sowing date (September,10) and optimal sowing dates (September, 20 and 30) the sowing rate of 5 million viable seeds/ha should be used. At the end of acceptable periods (October,10) the sowing rate should be increased to 6 million viable seeds/ha. After the black fallow predecessor, the highest yield of durum winter wheat has been formed – from 4.61 to 6.06 t/ha depending on the sowing rate and time of sowing. After the sunflower predecessor the yield level ranged from 3.43 to 4.28 t/ha. The optimal sowing time for durum winter wheat Lazurit variety in the south of Rostov region has been established - from the 10th to the 30th of September. Sowing in this period provided the largest number of productive stems (after the black fallow predecessor – 476-568 pcs/m2, after the sunflower predecessor – 420-512 pcs/m2), the grain mass per ear (1.21-1.36g and 0.91-1.08g), the plant height (95-100 cm and 92-100 cm), the ear length (6 cm and 4-5 cm, respectively).Conflict of interest: the author stated that there was no conflict of interest.

scholarly journals INFLUENCE OF PRECURSES AND SOWING DATE ON OVER-WINTERING AND WINTER WHEAT PRODUCTIVITY UNDER CHANGING REGIONAL CONDITIONS

2020 ◽  
Vol 15 (2) ◽  
pp. 66-71
Author(s):  
Rezeda Sharipova ◽  
Robert Hakimov ◽  
Natal'ya Hakimova
Keyword(s):  
Winter Wheat ◽  
Optimal Time ◽  
Winter Period ◽  
Forest Steppe ◽  
Seeding Rate ◽  
Phase Form ◽  
Sowing Dates ◽  
Ulyanovsk Region ◽  
Winter Crops ◽  
Viable Seeds

The research was carried out in order to determine the optimal time for sowing winter wheat according to various predecessors in the changing climate of Volga forest-steppe. The work was carried out in 2013–2019 in Ulyanovsk region on heavy loamy leached chernozem using conventional techniques. The experimental scheme provided for the study of two predecessors (peas and pure fallow) of winter soft wheat of Marafon variety, sown at 6 sowing dates with an interval of 10 days (from August 20 to October 10). The seeding rate for pure fallow is 5.0 million viable seeds per hectare, for peas - 5.5 million viable seeds per hectare. Average annual air temperature for 1961–2018 increased by 1.8°С. Its most significant increase was noted in the last twenty-five year period of time in the winter months. The increase in the frequency of extremely warm winters and temperature variability in the winter period significantly changed the conditions for overwintering winter crops. The danger of the development of wintering weeds, damping diseases, and soaking of winter crops has increased, and the conditions for overwintering pests have improved. It is possible to mitigate the danger of the natural and climatic vulnerability of crops during the wintering period by observing the optimal sowing dates, which should be postponed to a later period (7 ... 12 days), compared with the previously recommended ones. The optimal sowing period for winter wheat in Ulyanovsk region is from August 30 to September 10. Earlier crops are more intensively affected by diseases (powdery mildew and brown rust), and later crops, which have left in the winter in the germination phase, form a low density, form a small ear and provide low productivity or completely die

scholarly journals INFLUENCE OF SOWING DATES AND SEEDING RATES ON PRODUCTIVITY OF WINTER WHEAT VARIETIES IN THE REPUBLIC OF TATARSTAN

2020 ◽  
Vol 15 (2) ◽  
pp. 53-58
Author(s):  
Irina Fadeeva ◽  
Marsel Tagirov ◽  
Ilyas Gazizov ◽  
Fail' Kurmakaev
Keyword(s):  
Winter Wheat ◽  
Grain Yield ◽  
Stand Density ◽  
Seeding Rate ◽  
Sowing Time ◽  
Wheat Varieties ◽  
Sowing Dates ◽  
The Republic ◽  
Factor C ◽  
Sowing Period

In 2018-2019 in the Republic of Tatarstan the studies were carried out to study the effect of sowing dates and seeding rates on productuvuty of new varieties of winter wheat to identify the optimal elements of cultivation technology. The experiment scheme provided for the study of the following options: variety (factor A) - Darina, Universiada, Sultan; sowing time (factor B) - September 1 ... 2 (first, optimal), September 15 ... 17 (second); seeding rate (factor C) - 5.0; 5.5; 6.0; 6.5 million viable seeds per hectare. The predecessor is pure steam. Plot area 25 m2. The formation of the grain yield was mainly influenced by the sowing period (28.6%), the choice of the variety (21.2%) and the interaction of the three factors studied (15.8%). Universiada variety formed a yield of 4.91 t/ha during the first sowing period with a pure fallow and a seeding rate of 5.5 million pcs/ha. Sowing after September 15 resulted in a 33.78% decrease in the productivity of this variety. Darina variety formed the highest stand density among all the studied genotypes, both at the first (551.5 pieces/m2) and at the second (476.0 pieces/ m2) sowing dates. The highest grain yield of this variety was noted with the optimal (first) sowing period for pure fallow and the seeding rate of 6.0 million pcs/ha - 4.70 t/ha. A shift in sowing to a later date reduced its yield by 26.48%. Sultan variety formed the highest grain yield when sowing on September 1 ... 2 on a clean fallow with a seeding rate of 6.0 million pcs/ha. With a delay in sowing, like other varieties, the value of this indicator decreased by 24.65%. The analysis of correlations showed the dependence of the yield at the optimal sowing time in a medium degree on the grain size (r = 0.66), with a late one - on the number of productive stems for harvesting (r = 0.56). Key words: winter wheat (Triticum aestivum L.), variety, productivity, yield, grain weight, correlation

SOWING TIME AND SEEDING RATE OPTIMISATION UNDER ADAPTIVE MANAGEMENT OF VIOLA VARIETY WINTER WHEAT CULTIVATION TECHNOLOGY

1970 ◽  
pp. 40-42
Author(s):  
О. V. Lеvakova ◽  
Т. А. Barkovskaya
Keyword(s):  
Winter Wheat ◽  
High Plasticity ◽  
Seeding Rate ◽  
Sowing Time ◽  
Wheat Varieties ◽  
Wheat Cultivation ◽  
Sowing Dates ◽  
Cultivation Technology ◽  
Percolation Processes ◽  
Winter Wheat Varieties

One of the defining periods in the life of plants is the sowing of winter crops (autumn) period. Only when a good ensure moisture and at an optimal temperature of air in this period it is possible to obtain timely and quality shoots, forming shoots tillering and percolation processes utilization and hardening plants. Given the importance of the foregoing, this paper presents the results of research in the context of the Institute of agricultural technology and seed-the branch winter wheat varieties of locality Viola at different dates of sowing norm and seeding. It is established that the different timing of sowing plant survival ranged -87.5- 57.9%. Significant differences on wintering plants between crops of different sowing dates have been identified. Seeding rate had no significant effect on plant height, ear length and number of grains in an ear. Indicating a high plasticity of winter wheat varieties Viola. The greatest influence on the grain yield had a weight of 1000 grains (r = 0.78) and number of grains per ear (r = 0.63). Our research has shown that for winter wheat varieties of Viola in the midst of the Ryazan region favourable term of sowing is the period from 5 to 10 September with optimum seeding rate 4.5 million. PCs/HA.

scholarly journals Response of Late Sowing on the Yield and Yield Contributing Character of Different Varieties of Mustard and Rapeseed in Coastal Area of Barguna

1970 ◽  
Vol 42 (4) ◽  
pp. 441-448
Author(s):  
MA Razzaque ◽  
MR Talukder ◽  
Shaleh Uddin ◽  
SI Khan ◽  
Altab Hossain
Keyword(s):  
Coastal Area ◽  
Brassica Species ◽  
Sowing Date ◽  
Rabi Season ◽  
Sowing Time ◽  
Sowing Dates ◽  
Main Plot ◽  
Testing Site ◽  
Late Sowing ◽  
Plot Design

An experiment was carried at Multi Location Testing site Barguna to determine suitable variety of mustard (Brassica species) for the late sowing condition for the coastal area of Bangladesh during rabi season of 1998-1999 and 1999-2000. Four varieties of mustard such as Daulat, Rai-5, Improved tory-7, and Ishurdi local with four sowing dates viz.15 Nov, 23 Nov, 30 Nov. and 7 Dec. were used for the experiment. The experiment was laid out in a split plot design with sowing date in the main plot and varieties in the sub plot. The results revealed that the variety Daulat (1035 kg/ha) and Ishurdi local (1014 kg/ha) produced identically superior yield irrespective of sowing time. 15 November (1164 kg/ha) and 23 November (1002 kg/ha) recorded identically superior yield irrespect of variety. Daulat and Ishurdi local variety sowing could be delayed up to 30 November to obtain a profitable yield of (872 kg/ha) and (940 kg/ha) respectively which was still economically profitable. Key words: Mustard and rapes, Late sowing , variety, Yield, coastal area. Bangladesh J. Sci. Ind. Res. 42(4), 441-448., 2007

scholarly journals Pre-anthesis development of winter wheat and barley and relationships with grain yield

2018 ◽  
Vol 64 (No. 7) ◽  
pp. 310-316 ◽  
Author(s):  
Mirosavljevic Milan ◽  
Momcolovic Vojislava ◽  
Maksimovic Ivana ◽  
Putnik-Delic Marina ◽  
Pržulj Novo ◽  
...  
Keyword(s):  
Winter Wheat ◽  
Grain Yield ◽  
Sowing Date ◽  
Wheat Cultivars ◽  
Growing Seasons ◽  
Sowing Dates ◽  
Winter Wheat Cultivars ◽  
Leaf Appearance ◽  
Relationship Of ◽  
The Relationship

The aim of this study was to improve understanding of (1) the effect of genotypic and environmental factors on pre-anthesis development and leaf appearance traits of barley and wheat; (2) the relationship of these factors with grain yield, and (3) the differences between these two crops across different environments/sowing dates. Therefore, trials with six two-row winter barley and six winter wheat cultivars were carried out in two successive growing seasons on four sowing dates. Our study showed that the observed traits varied between species, cultivars and sowing dates. In both growing seasons, biomass at anthesis and grain yield declined almost linearly by delaying the sowing date. There was no clear advantage in grain yield of wheat over barley under conditions of later sowing dates. Generally, barley produced more leaf and had shorter phyllochron than wheat. Both wheat and barley showed a similar relationship between grain yield and different pre-anthesis traits.

scholarly journals Study on the Morpho-physiological Character of Four Quality Protein of Maize (Corn)

2017 ◽  
Vol 10 (1) ◽  
pp. 117-124
Author(s):  
SK Mondal ◽  
MM Rahman
Keyword(s):  
Grain Yield ◽  
Sowing Date ◽  
Weight Percent ◽  
Leaf Sheath ◽  
Sowing Time ◽  
Planting Time ◽  
Physiological Character ◽  
Physiological Variability ◽  
Sowing Dates ◽  
Number Of Leaves

The experiment was conducted to find out the morpho-physiological variability in response to different sowing dates in four lines of Quality Protein Maize (QPM) in in the Field Laboratory of the Department of Crop Botany, Bangladesh Agricultural University, Mymensingh. The study was carried out with four lines of maize and two sowing dates, 15 November (T1) and 15 December, ((T2). Sowing date differed significantly in plant height, length of leaf blade, length of leaf sheath, leaf breadth, cob length, cob diameter, length of tassel, days to 50% tasselling, days to 50 % silking, days to maturity, number of cobs per plant, cob weight, number of grain per cob. 1000-seed weight, percent underdeveloped cob, total dry matter and grain yield, but did not differ in number of leaves and protein percent. The lines differed significantly among themselves in those characters except number of leaves per plant, length of leaf sheath, cob length, cob diameter, days to 50% tasselling, number of cobs per plants and number of grain per cob. The line Across 8666 (V2) and (V3) gave the highest grain yield 4.57 and 4.55 and the lowest from (V4) lines 4.41 tons per hectare. The 15 November sowing time (T1) gave the highest grain yield 4.86 tons per hectare. In case of interaction, the earlier planting time (T1) showed better performance with all lines. On the other hand, the highest yield was found from combination of line V2 and V3 with earlier planting time (T1).J. Environ. Sci. & Natural Resources, 10(1): 117-124 2017

Investigation of sowing date and seeding rate on the yield of winter wheat

2007 ◽  
Vol 35 (2) ◽  
pp. 685-688 ◽  
Author(s):  
István Kristó ◽  
Kálmán Gyuris ◽  
Mária Torma ◽  
Margit Hódi-Szél ◽  
István Petróczi
Keyword(s):  
Winter Wheat ◽  
Sowing Date ◽  
Seeding Rate

Determination of optimal sowing dates and densities of winter wheat under Quebec growing conditions

2019 ◽  
Vol 99 (2) ◽  
pp. 221-231 ◽  
Author(s):  
Francis Allard ◽  
Anne Vanasse ◽  
Denis Pageau ◽  
Gilles Tremblay ◽  
Julie Durand ◽  
...  
Keyword(s):  
Winter Wheat ◽  
Survival Rates ◽  
Sowing Date ◽  
Winter Survival ◽  
Seeding Density ◽  
Good Survival ◽  
First Year ◽  
Sowing Dates ◽  
Yield Gain ◽  
Growing Conditions

The objective of this project was to determine the optimal sowing dates and densities for winter wheat to increase winter survival and yield under Quebec growing conditions. The trials were carried out from 2014 to 2016 at four sites, representing three cereal production zones (zones 1, 2, and 3). Three cultivars were assessed using four sowing dates and four seeding densities (250, 350, 450, and 550 seeds m−2). In the first year, the wheat at two of the four sites survived (82%–100%), and in the second year, all the sites showed good survival rates (69%–99%). In zone 2, winter survival was higher for the early sowing dates compared with later dates. Sowing date and seeding density had no effect on survival in zones 1 and 3. Maximum yields were attained with sowing dates from mid- to late September in zone 1; from early to mid-September in zone 2; and from mid-August to mid-September in zone 3. An increase in seeding density from 250 to 550 seeds m−2 led to an average yield gain of 9% in zones 2 and 3, but no gain in zone 1. Winter survival rates and yield differ between cultivars.

Influence of genotype, sowing date, and seeding rate on wheat development and yield

1993 ◽  
Vol 33 (6) ◽  
pp. 751 ◽  
Author(s):  
DR Coventry ◽  
TG Reeves ◽  
HD Brooke ◽  
DK Cann
Keyword(s):  
Grain Yield ◽  
Sowing Date ◽  
Triticum Aestivum L ◽  
Climatic Conditions ◽  
Wheat Cultivars ◽  
Seeding Rate ◽  
Sowing Time ◽  
Spike Density ◽  
Early Maturity ◽  
North Eastern

A 3-year study was conducted to measure the effect of sowing time and seeding rate on the development and yield of wheat (Triticum aestivum L.) grown under high-yielding conditions in north-eastern Victoria. A range of wheat cultivars with different development responses, including 'winter' types, was used in 2 experiments in each season. High grain yields for dryland wheat were measured in the first 2 seasons (1985-86), and in 1985, near-optimal water use efficiencies (>18 kg/ha. mm effective rainfall) were obtained. In the third season (1987) grain yield was limited by adverse climatic conditions-in the me- and post-anthesis period. In each season, grain yield declined with delay in sowing time. In 1985 there was a loss of 200-250 kg grain/ha for each week's delay in sowing time. In 1987, yield loss with delayed sowing was 50-110 kg grain/ha. In each season, cultivars with late or midseason maturity development gave the highest mean yields, and the use of these maturity types allowed earlier sowing, in mid April. However, with late sowing of wheat there was a trend for early maturity types to give higher yields, and so the use of 2 wheat cultivars with distinct maturity development responses to climate is recommended. If only 1 wheat cultivar is to be used, then a late maturity type is recommended. Higher wheat yields were also obtained as spike density increased, as a result of higher seeding rates. Our data suggest that in the higher rainfall region of north-eastern Victoria, a spike density of about 500 spikes/m2 is required to optimise wheat yields.

Sign in / Sign up

Export Citation Format

Share Document