YIELD PERFORMANCE OF UPRIGHT-LEAVED SELECTIONS OF WINTER WHEAT IN NARROW ROW SPACINGS

1967 ◽  
Vol 47 (5) ◽  
pp. 597-601 ◽  
Author(s):  
N. C. Stoskopf
Keyword(s):  
Winter Wheat ◽  
Spatial Arrangement ◽  
Row Spacing ◽  
Full Potential ◽  
Seeding Rate ◽  
Yield Performance ◽  
Grain Yields ◽  
Row Width ◽  
Check Variety ◽  
Narrow Row

Short-strawed, upright-leaved selections of winter wheat were compared with a tall, droopy-leaved check variety in wide (22.8- and 17.8-cm) and narrow (11.4- and 8.9-cm) row spacings at three seeding rates, to determine the best row width for highest grain yields and to determine whether an entry × row-spacing interaction could be measured. All entries produced more grain from narrow than from wide rows, in both years (1964 and 1966) and at all three seeding rates. This increase averaged 12.6% in the selections and 6.9% in the check variety. Highest yields were obtained at a seeding rate of 134 kg/ha, and in all cases the check variety outyielded the selections. The test demonstrated that higher grain yields were produced by a better spatial arrangement achieved by narrow row spacings, and that yield deficiencies in upright-leaved types could not be compensated for by a heavier seeding rate. While upright-leaved selections showed a greater increase in grain produced than did the check variety, no interaction with row spacings could be obtained statistically. It is suggested that lines which yield as high as check varieties in standard row-spacing tests (wide) may outyield the standard tall, droopy-leaved varieties in narrow rows. Short-strawed, upright-leaved selections emerging from the winter wheat program should therefore be tested in narrow row spacings so that these lines can express their full potential.

Seeding depth, rate and row spacing for winter wheat grown on stubble and chemical fallow in the semiarid prairies

1996 ◽  
Vol 76 (2) ◽  
pp. 207-214 ◽  
Author(s):  
J. G. McLeod ◽  
C. A. Campbell ◽  
Y. Gan ◽  
F. B. Dyck ◽  
C. L. Vera
Keyword(s):  
Winter Wheat ◽  
Grain Yield ◽  
Grain Quality ◽  
Row Spacing ◽  
Silt Loam ◽  
Plant Establishment ◽  
Seeding Rate ◽  
Planting Depth ◽  
Wide Row Spacing ◽  
Narrow Row

Recommendations regarding seeding depth, rate and row spacing for winter wheat (Triticum aestivum L.) production in the semiarid Canadian prairies have been extrapolated from those for the production of spring wheat in the region, or from information on winter wheat studies conducted in more humid areas of Saskatchewan. A factorial combination of two seeding depths (25- vs. 50-mm), two row spacing (18- vs. 36-cm) and two seeding rates (30 vs. 60 kg ha−1) was used to study plant establishment, grain yield and grain quality of winter wheat in the semiarid Brown soil zone. Three years of experiments were conducted on a Swinton silt loam near Swift Current, and on a Hatton fine sandy loam near Cantuar. Winter wheat was seeded directly into stubble at both sites and into chemically prepared fallow on the silt loam. On average, there was no significant difference (P < 0.05) due to planting depth. Deep planting reduced plant establishment and grain yield in only two of 11 site-years when humid conditions prevailed. Plant establishment and grain yield were superior for the 60 kg ha−1 seeding rate compared to the 30 kg ha−1 rate in the wet year (1986). In drier years (1987 and 1988) there was rarely any difference due to seeding rate. Narrow row spacing resulted in greater plant density than wide row spacing; however, row spacing had little effect on grain yield. In the semiarid prairie, where trash clearance for seeding implements is not usually a problem, and where many producers still swath the crop, it may be advantageous to use a narrow row spacing. However, if power requirements and trash clearance are important considerations, wide row spacing will be advantageous. Grain quality parameters (test weight, kernel weight and protein concentration) were not greatly affected by the factors studied. For winter wheat production in the semiarid prairie, we recommend that planting depth be shallow (about 25 mm), seeding rate be 60 kg ha−1, and row spacing be either narrow or wide depending on mode of harvesting. Key words: Semiarid prairie, winter wheat, grain yield, grain protein

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.

EFFECTS OF SEEDING RATE AND ROW SPACING ON AGRONOMIC CHARACTERISTICS OF GLENLEA, PITIC 62 AND NEEPAWA WHEATS

1975 ◽  
Vol 55 (2) ◽  
pp. 363-367 ◽  
Author(s):  
K. G. BRIGGS
Keyword(s):  
Triticum Aestivum ◽  
Unit Area ◽  
Triticum Aestivum L ◽  
Kernel Weight ◽  
Test Weight ◽  
Row Spacing ◽  
Seeding Rate ◽  
Days To Maturity ◽  
Narrow Row ◽  
Plot Design

Three cultivars of wheat (Triticum aestivum L. em Thell.), Glenlea, Pitic 62 and Neepawa, were grown in a seeding rate and row spacing experiment at two locations in 1972 and 1973. In a split-plot design, row spacings of 15, 23 and 30 cm were used as main plots, and subplot seeding rates of 33.6, 67.3 and 100.9 kg/ha were applied for each cultivar. Data were collected on yield, days to maturity, plant height, lodging, kernel weight and test weight. The few significant effects of row spacing indicated that narrow row spacings tend to increase yield and decrease days to maturity. Higher seeding rates per unit area generally resulted in higher yields for all cultivars and, to some extent, earlier maturity. Glenlea wheat seeded at 100.9 kg/ha gave the highest yield in all tests, and at this seeding rate took an average 125 days to reach maturity, compared to 120 days for Neepawa and 129 days for Pitic 62. Seeding rate had virtually no effect on height, kernel weight or test weight of any of the wheats.

Effet du chiendent sur l'orge ensemencée à différents écartements entre les rangs et doses de semis

1995 ◽  
Vol 75 (3) ◽  
pp. 613-618 ◽  
Author(s):  
D. Pageau ◽  
G. F. Tremblay
Keyword(s):  
Specific Weight ◽  
Kernel Weight ◽  
Yield Reduction ◽  
Row Spacing ◽  
Seeding Rate ◽  
Hordeum Vulgare L ◽  
Spike Density ◽  
Spike Number ◽  
Viable Seeds ◽  
Narrow Row

A 4-yr study was conducted to evaluate the effect of two row spacings (10 and 20 cm) and five seeding rates of the cereal (100, 200, 300, 400 and 500 viable seeds m−2) on the interference between quackgrass [Elymus repens (L.) Nevski] and barley (Hordeum vulgare L. 'Cadette'). Narrow row spacings had no effect on the yield of barley in presence or absence of quackgrass. However, seeding rates influenced the productivity and development of barley when quackgrass was present. At a seeding rate of 100 seeds m−2, the yield reduction caused by the presence of quackgrass was 41%. When barley was seeded at 500 seeds m−2, the yield reduction was 19%. These yield reductions were mainly attributed to a decrease of spike density. In presence of quackgrass, the specific weight, number of kernels per spike, number of spikes per plant, 1000-kernel weight, harvest index and N concentration of grain were reduced. In contrast to a decrease of the row spacing, increasing seeding rate can be used to reduce interference between quackgrass and barley. Key words: Barley, quackgrass, interference, row spacing, seeding rate

Effect of Seeding Rate, Row Spacing, and Rate and Placement of Fertilizer on Winter Wheat Performance in Michigan 1

1963 ◽  
Vol 55 (1) ◽  
pp. 24-27 ◽  
Author(s):  
K. L. Kinra ◽  
H. D. Foth ◽  
L. S. Robertson ◽  
H. M. Brown
Keyword(s):  
Winter Wheat ◽  
Row Spacing ◽  
Seeding Rate

EFFECT OF DATE AND RATE OF SEEDING, ROW SPACING AND FERTILIZATION ON LENTIL

1989 ◽  
Vol 69 (2) ◽  
pp. 377-381 ◽  
Author(s):  
S. T. ALI-KHAN ◽  
F. A. KIEHN
Keyword(s):  
Seed Size ◽  
Lens Culinaris ◽  
Plant Population ◽  
Row Spacing ◽  
Seeding Rate ◽  
Seeding Date ◽  
Narrow Row ◽  
High Yields

The effect of seeding date, seeding rate, row spacing and fertilizer level were investigated in two cultivars of lentil (Lens culinaris Medik.), Eston and Laird, in Manitoba. High yields were obtained by early seeding, narrow row spacing (15 cm) and high seeding rate (100 plants m−2). Response to fertilizer levels was variable. Early seedings produced larger seeds. Effects of other treatments on seed size were not significant.Key words: Lentil, seeding date, seeding rate, plant population, fertilizer level

scholarly journals Effect of seeding date, rate and depth on winter wheat grown on conventional fallow in S.W. Saskatchewan

1991 ◽  
Vol 71 (1) ◽  
pp. 51-61 ◽  
Author(s):  
C. A. Campbell ◽  
F. Selles ◽  
R. P. Zentner ◽  
J. G. McLeod ◽  
F. B. Dyck
Keyword(s):  
Winter Wheat ◽  
Management Strategies ◽  
Economic Loss ◽  
Triticum Aestivum L ◽  
Grain Protein ◽  
Seeding Rate ◽  
Plant Survival ◽  
Canadian Prairies ◽  
Grain Yields ◽  
Seeding Date

Winter wheat (Triticum aestivum L.) seeded on conventional fallow is considered to have a high risk of winterkill in the Brown soil zone of the Canadian Prairies, yet many producers in this area continue to use this approach. Although this system is subject to frequent winterkill, the alternative (seeding into standing stubble) is itself subject to frequent economic loss due to drought stress. A 4-yr study was carried out on a medium-textured, Orthic Brown Chernozem using Norstar winter wheat seeded into bare fallow land. Several seeding dates, depths and rates were tested to determine if alternate management strategies could be used to enhance the chances of overwinter survival thereby improving the incidence of successful production when this crop was grown on conventional fallow. Multiple regression was used to relate grain yields and plant counts (survival over winter) to the number of days before freeze-up when the crop was seeded and the other treatment factors. Results confirmed those reported in southern Alberta. For example, production was very variable and both plant survival and grain yields were mainly influenced by seeding date, with the optimum seeding period being the first 2 wk of September; yields decreased sharply on both sides of this period. However, seeding just prior to freeze-up gave higher yields than seeding 2 or 3 wk prior to freeze-up even though this latest seeded material did not geminate until spring. Depth of seeding influenced plant survival but had little influence on yield. The 5.0-cm depth was recommended as the best for fallow. Seeding rate influenced plant survival and yields more so than depth, but the influence was not large and none of the three treatments prevented severe winterkill when temperatures were extremely low. We recommended that a seeding rate of 60 kg ha−1 be chosen for fallow as is the case for stubble seeded wheat. Grain protein was not influenced by any treatment and was mainly a function of moisture deficit (year). In spite of the variability in production with this system of management, producers may still choose to grow winter wheat on conventional fallow since if winterkilling occurs they have the option of reseeding the area to spring wheat. Key words: Seeding date, seeding rate, seeding depth, yields, grain protein

EFFECT OF ROW WIDTH AND POPULATION ON SOYBEAN YIELD IN SOUTHWESTERN ONTARIO

1984 ◽  
Vol 64 (1) ◽  
pp. 9-15 ◽  
Author(s):  
A. D. McLAREN ◽  
G. R. ABLETT ◽  
J. C. SCHLEIHAUF
Keyword(s):  
Glycine Max ◽  
Plant Height ◽  
Yield Response ◽  
Row Spacing ◽  
Seeding Rate ◽  
Soybean Yield ◽  
Row Width ◽  
Glycine Max L

The effect of seeding rate (seeds per hectare) and row width (distance between rows) was examined for various adapted soybean (Glycine max (L.) Merr.) cultivars in southwestern Ontario. Maple Arrow, Harosoy 63 and Harcor cultivars were grown in 18-, 35-, 53-, 71-, and 89-cm row widths seeded at 198 000, 395 000, and 593 000 seeds/ha during 1978 and 1979. The greatest yields were associated with the two narrowest row widths and the two highest seeding rates. Plant height, lodging, and bottom pod height varied mainly with seeding rate and cultivar. In another 2-yr study (1980 and 1981) Maple Arrow, Evans, S1346, Hodgson, A2575, and Harcor were grown at four row widths (18, 35, 53, and 71 cm) and two seeding rates (395 000 and 593 000 seeds/ha). A significant cultivar × row width interaction for yield occurred with Maple Arrow and Harcor showing the greatest yield response. Although a small seeding rate × cultivar interaction occurred, generally, seeding rates between 395 000 and 593 000 seeds/ha were adequate for all cultivars and all row widths.Key words: Glycine max (L.) Merr., seeding rate, row spacing, lodging, yield

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