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

scholarly journals Формування продуктивності колоса рослин пшениці озимої залежно від строку сівби та норми висіву

2016 ◽  
pp. 6-11
Author(s):  
А. О. Рожков ◽  
М. А. Бобро ◽  
Т. В. Рижик
Keyword(s):  
Winter Wheat ◽  
Weather Conditions ◽  
Growing Season ◽  
Sowing Date ◽  
Seeding Rate ◽  
Seed Rate ◽  
Soft Winter Wheat ◽  
Productivity Indicators ◽  
Sowing Seed ◽  
The Impact

У статті представлені результати досліджень, проведених протягом 2007–2009, 2014 рр. на дослідному полі ХНАУ ім. В. В. Докучаєва щодо впливу застосування різних строків сівби та норм висіву на варіабельність показників продуктивності колоса різних систем стебел пшениці м’якої озимої сорту Астет. Формування вищих показників продуктивності колоса головної і бічної системи стебел у середньому за роками досліджень забезпечувала сівба 15–17 вересня з нормою висіву 5,0 млн нас./га. Ефективність чинника норми висіву за роками досліджень була більш сталою порівняно зі строками проведення сівби, вплив яких значно залежав від погодних умов веґетаційного періоду конкретного року досліджень. The article presents the results of studies conducted during 2007–2009, 2014 in the experimental field of HNAU named after V. V. Dokuchayev regarding the impact of the application of different sowing date and seeding rates on the variability of  ear productivity indicators of different systems of soft winter wheat stalks of variety Astet. Formation of the highest levels of ear productivity of main and side stems of the average for the year of studies was provided on 15–17 September with the sowing seed rate 5,0 million grains/ha. The effectiveness of the seeding rate by years of research was more stable compared to the timing of sowing, the impact of which is significantly dependent on the weather conditions of the growing season of a particular year.

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.

Planting dates and seeding rates for soft white winter wheat in eastern Ontario

1992 ◽  
Vol 72 (2) ◽  
pp. 391-402 ◽  
Author(s):  
C. J. Andrews ◽  
M. K. Pomeroy ◽  
W. L. Seaman ◽  
G. Hoekstra
Keyword(s):  
Winter Wheat ◽  
Sowing Date ◽  
Triticum Aestivum L ◽  
Kernel Weight ◽  
Winter Survival ◽  
Yield Potential ◽  
Seeding Rate ◽  
Planting Dates ◽  
Grain Yields ◽  
Eastern Ontario

A study was made to determine optimum fall planting dates and rates of seeding of soft white winter wheat (Triticum aestivum L.) in three counties in eastern Ontario. This area is considered marginal for winter survival of the crop, although yield potential is high. Plots were sown at Douglas (lat. 45°33′), Ottawa (lat. 45°23′) and Kemptville (lat. 45°00′). Four planting dates were used at Douglas and Ottawa (dates 1 to 4) and five dates at Kemptville. These were: date 1, 27 August; date 2, 10 September; date 3, 24 September; date 4, 8 October; and date 5, 22 October. Split-plot designs were used, with dates as main plots and with rates and cultivars randomized as subplots. Harvest years were between 1983 and 1987. Winter survival was generally reduced below 60% in later plantings, but survival remained high from the date 4 planting in two years at Ottawa. Grain yields were increased by early plantings. Maximum yields at Douglas were obtained from dates 1 and 2; at Ottawa and Kemptville, from dates 1 to 3. A significant advantage of date 2 planting was recorded at Kemptville. Kernel weight and test weight were reduced by late planting dates. Grain yields and winter survival were highly correlated at seven of nine location-years. At Ottawa, there was a significant yield increase from the 160 kg ha−1 seeding rate, compared with 130 kg ha−1, the currently recommended rate. Yield increases from higher seeding rates were greater at later planting dates. Cultivar effects on grain yields were frequently significant, but were less so on winter survival. The cultivar Houser produced the highest yield in five of nine location-years.Key words: Winter survival, wheat (winter), sowing date, sowing rate

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.

Seeding Date, Seeding Rate, and Row Spacing Affect Wheat (Triticum aestivum) and Cheat (Bromus secalinus)

1991 ◽  
Vol 5 (4) ◽  
pp. 707-712 ◽  
Author(s):  
Jeffrey A. Koscelny ◽  
Thomas F. Peeper ◽  
John B. Solie ◽  
Stanley G. Solomon
Keyword(s):  
Triticum Aestivum ◽  
Winter Wheat ◽  
Field Experiments ◽  
Wheat Yield ◽  
Row Spacing ◽  
Infestation Level ◽  
Seeding Rate ◽  
Seeding Date ◽  
Bromus Secalinus ◽  
Winter Wheat Yield

Field experiments were conducted in Oklahoma to determine the effects of winter wheat seeding date and cheat infestation level on cultural cheat control obtained by increasing winter wheat seeding rates and decreasing row spacing. Seeding rate and row spacing interactions influenced cheat density, biomass, or seed in harvested wheat (dockage) at two of three locations. Suppressive effects on cheat of increasing wheat seeding rates and reduced row spacings were greater in wheat seeded in September than later. At two other locations, increasing seeding rate from 67 to 101 kg ha–1or reducing row spacings from 22.5 to 15 cm increased winter wheat yield over a range of cheat infestation levels.

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