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.

Yield and water use of paired-row versus equidistant-row seeded spring wheat in a semiarid environment

1992 ◽  
Vol 72 (2) ◽  
pp. 459-463 ◽  
Author(s):  
H. W. Cutforth ◽  
F. Selles
Keyword(s):  
Triticum Aestivum ◽  
Grain Yield ◽  
Water Use ◽  
Spring Wheat ◽  
Triticum Aestivum L ◽  
Row Spacing ◽  
Semiarid Environment ◽  
Brown Soil ◽  
Soil Zone ◽  
Days To Maturity

A field study was carried out to determine the effects of seed row configuration on days to maturity, water use and grain yield of spring wheat (Triticum aestivum L. ’Leader’) grown in a semiarid environment. From 1986 to 1989, Leader spring wheat was seeded at Swift Current, Saskatchewan in north-south equidistant-rows (25-cm row spacing) and paired-rows (two rows 10 cm apart with 50 cm between the centre of each paired row). Seed and fertilizer were applied at recommended rates for the Brown soil zone. There were no significant differences (P > 0.10) in grain yield, water use or days to maturity between equidistant-row and paired-row seeding. The data suggest that under the environmental conditions of the Brown soil zone paired-row seeding may have no agronomic advantage over equidistant-row seeding.Key words: Paired-row seeding, water use, grain yield, spring wheat

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

Row spacing and seeding rates to optimize safflower yield on the Canadian prairies

1994 ◽  
Vol 74 (2) ◽  
pp. 319-321 ◽  
Author(s):  
H.-H. Mündel ◽  
R. J. Morrison ◽  
T. Entz ◽  
R. E. Blackshaw ◽  
B. T. Roth ◽  
...  
Keyword(s):  
Oil Content ◽  
Carthamus Tinctorius ◽  
Test Weight ◽  
Row Spacing ◽  
Seeding Rate ◽  
Canadian Prairies ◽  
Southern Alberta ◽  
Days To Maturity ◽  
Effect On Yield ◽  
Seed Yields

Nine experiments were conducted in Alberta and Manitoba between 1988 and 1991 to determine the effect of row spacing and seeding rates on safflower (Carthamus tinctorius L.) yield, oil content, test weight and maturity. Row spacings of 15 and 30 cm at Morden had little effect on yield, while in southern Alberta there was a tendency toward increased yields with narrow rows (23 cm) compared with wide rows (46 cm). Seeding rates of 32–40 kg ha−1 were required to obtain maximum seed yields. Oil content, test weight, and days to maturity were not consistently affected by row spacing or seeding rate. Key words:Carthamus, row spacings, seeding rates, yield, oil, test weight, maturity

VALOR, A WINTER FEED WHEAT FOR THE MARITIMES

1982 ◽  
Vol 62 (2) ◽  
pp. 505-507 ◽  
Author(s):  
D. R. SAMPSON ◽  
H. G. NASS
Keyword(s):  
Triticum Aestivum ◽  
Powdery Mildew ◽  
Winter Wheat ◽  
Triticum Aestivum L ◽  
Kernel Weight ◽  
Winter Survival ◽  
Test Weight ◽  
Grain Protein ◽  
Maritime Provinces ◽  
Yield Test

Valor is a new, medium-hard, red winter feed wheat (Triticum aestivum L.) that is adapted to the Maritime Provinces of Canada. Valor was licensed in July 1981. Compared with Lennox, the principal winter wheat of the area, Valor has slightly higher yield, test weight and 1000-kernel weight, as well as greater winter survival and more resistance to powdery mildew. Valor has slightly weaker straw and lower grain protein.

scholarly journals EVALUATION BREAD WHEAT PURE LINES UNDER EFFECT OF DIFFERENT SEEDING RATES FOR GRAIN YIELD AND IT, S COMPONENT

2016 ◽  
Vol 47 (5) ◽  
Author(s):  
Baktash & Naes
Keyword(s):  
Triticum Aestivum ◽  
Grain Yield ◽  
Bread Wheat ◽  
Pure Line ◽  
Triticum Aestivum L ◽  
Research Station ◽  
Seeding Rate ◽  
Significant Difference ◽  
Pure Lines ◽  
Plot Design

This research was carried out at the Swerah Research Station –Office of Agricultural Researches Ministry of Agriculture, during 2014-2015 season. The objective of this research was to evaluation 15 pure lines (Triticum aestivum L.). genotypes ,the seventh generation developed by half dialled method between 6 parents. The experiment was conducted using split plot design with three replicates ,The main plots were four seeding rates (120, 160, 200 and 240 kg.ha-1 ), while the 21 genotypes occupied sub plots .The two pure lines S97 and S148 out yielded other genotypes except A4.10 and Abu-Ghraib in grain yield which, produced 6.35 and 6.09 t.ha-1, respecting .increasing seeding rates caused to increase in number of spikes .plant-1 and flag leaves angle. Significant difference were found among genotypes due to seeding rate.The pure line S148 ,using 200 kg.ha-1 seeding rate produced highest grain yield (7.49 t.ha-1) which did not differed from using A4.10 under 200 and 240 kg.ha-1 seeding rate. It was recommended to certify the pure line S148  using 200 kg.ha-1 seeding rate for cultivation at central of Iraq.

Wheat seeding rate for spread and distinct row seed placement with air seeders

2001 ◽  
Vol 81 (4) ◽  
pp. 885-890 ◽  
Author(s):  
Adrian M. Johnston ◽  
F. Craig Stevenson
Keyword(s):  
Triticum Aestivum ◽  
Grain Yield ◽  
Spring Wheat ◽  
Triticum Aestivum L ◽  
Yield Potential ◽  
Row Spacing ◽  
N Availability ◽  
Seeding Rate ◽  
Hard Red Spring Wheat ◽  
Seed Placement

Air (pneumatic) seeding systems that have seed row opener options that spread seed rather than place it in distinct rows may allow producers to uniformly distribute plants and increase seeding rates to improve cereal crop yield. A study was conducted to determine if seed placement configuration influenced hard red spring wheat (Triticum aestivum L.) response to seeding rate. The study was carried out at Melfort, SK, from 1997 to 1999, using three seed configurations (23 cm and 30 cm distinct row with a hoe opener; and a 20 cm spread using a 28 cm sweep on 23 cm row spacing) and four seeding rates (67, 100, 134, and 167 kg ha–1). Grain yield increased 6% when seeding rate was increased from 100 (recommended rate) to 168 kg ha–1 in 1997. Improved grain yield with increased seeding rates was related to greater kernels head–1. In the 2 following years, yield decreased by 9% when seeding rate was increased from 100 to 168 kg ha–1. Yield reductions in these years were associated with high yield potential (high soil N availability) and lodging, that in turn resulted in decreased kernels head–1 and kernel weight with increased seeding rates. Grain yield did not differ between the sweep and distinct rows, regardless of the seeding rate. Furthermore, the similar yields among the three seed configurations occurred despite lodging being less with sweeps compared with 23 or 30 cm row spacing at the highest seeding rate in 1998. The increased distance between wheat plants with sweeps did not improve grain yields as a result of reduced inter-plant competition, regardless of seeding rate. This absence of grain yield differences between the sweep and distinct row placement illustrates the yield stability associated with Canadian hard red spring wheat cultivars through yield component compensation. Key words: Wheat (Triticum aestivum L.), row spacing, seeding rate, lodging, seed placement

EFFECT OF HARVEST TIME AND DRYING METHOD ON THE YIELD, QUALITY AND GRADE OF HARD RED SPRING WHEAT IN NORTHWEST ALBERTA

1984 ◽  
Vol 64 (3) ◽  
pp. 617-623
Author(s):  
J. V. CHRISTENSEN ◽  
W. G. LEGGE
Keyword(s):  
Triticum Aestivum ◽  
Moisture Content ◽  
Spring Wheat ◽  
Triticum Aestivum L ◽  
Kernel Weight ◽  
Test Weight ◽  
Drying Method ◽  
Falling Number ◽  
Current Recommendation ◽  
Hard Red Spring Wheat

Two hard red spring wheat (Triticum aestivum L.) cultivars, Neepawa and Columbus, were harvested at 5% kernel moisture content (KMC) intervals from 45% to 15% for three growing seasons. Two drying treatments, field drying in windrows and oven drying were evaluated. Yield, test weight, 1000-kernel weight, protein-N, falling number and commercial grade were determined. Protein-N and 1000-kernel weight were reduced when the crop was harvested above 40% and 35% KMC, respectively, but were not affected by drying method. Yield losses up to 12% were recorded with windrowing. Windrowing at 35% KMC or less in warm, dry conditions had little effect on test weight, falling numbers, and grade. Under wet conditions, windrowing above 20% KMC resulted in lower falling numbers and a loss of grade. Direct combining and artificial drying above 20% KMC lowered test weights, falling numbers and grade. The current recommendation of windrowing at 35% KMC is supported under good harvest conditions but either windrowing or straight combining at 20% KMC would be superior under damp harvest conditions.Key words: Triticum aestivum L., kernel moisture content, drying method, falling number, quality, grade

THE EFFECT OF IRRIGATION TIMING ON YIELD AND YIELD COMPONENTS OF WINTER WHEAT

1983 ◽  
Vol 63 (4) ◽  
pp. 815-823 ◽  
Author(s):  
M. L. HOOKER ◽  
S. H. MOHIUDDIN ◽  
E. T. KANEMASU
Keyword(s):  
Triticum Aestivum ◽  
Winter Wheat ◽  
Yield Components ◽  
Triticum Aestivum L ◽  
Kernel Weight ◽  
Significant Response ◽  
Seeding Rate ◽  
Cropping Season ◽  
Yield And Yield Components ◽  
Irrigation Treatments

A study was conducted in southwest Kansas to evaluate the effect of limited water applications at critical growth stages on yield and yield components of winter wheat (Triticum aestivum L.). The experiment was a split-plot design. Irrigation treatments were main plots and cultivar × seeding rate combinations were subplots. The irrigation treatments were: Preplant (PP), PP + jointing (JT), PP + flowering (FL), and PP + JT + FL. Two cultivars (Centurk and Newton) were seeded at rates of 22, 45, and 67 kg∙ha−1. The experiment was conducted over a 2-yr period. During the first cropping season grain and straw yields showed a significant (P < 0.05), positive response to irrigation water applications at the JT growth stage, compared to the PP and PP + FL treatments. There was no significant effect of water treatments on heads per square metre, kernels per square metre or kernel weight. The second cropping season resulted in a positive, significant response of straw yields to irrigation treatments, but no significant response of grain. Grain yield response was nullified by greater kernel weight on the treatments that were most limiting in soil water during early reproductive development (PP and PP + FL).Key words: Triticum aestivum L., limited irrigation, moisture stress, seeding rate, kernel number, kernel weight

STUDIES WITH HYBRID WHEAT IN ONTARIO

1970 ◽  
Vol 50 (4) ◽  
pp. 485-491 ◽  
Author(s):  
R. K. RAI ◽  
N. C. STOSKOPF ◽  
E. REINBERGS
Keyword(s):  
Genetic Diversity ◽  
Triticum Aestivum ◽  
Grain Yield ◽  
Triticum Aestivum L ◽  
Kernel Weight ◽  
Hybrid Wheat ◽  
Male Sterile ◽  
Seeding Rate ◽  
Yield Increase ◽  
Flour Production

An F1 hybrid from parental wheat (Triticum aestivum L.) cultivars with wide genetic diversity yielded 7329 kg/ha, a 26% increase over the higher yielding parent. Two other crosses resulted in an F1 yield increase of 15 and 5%. The best hybrid outyielded Genesee, which averaged 6177 kg/ha, by 19%. All data were averaged over a two-year period and were obtained at a standard seeding rate. Grain yields decreased from the F1 to the F2 generation in all three crosses and in the best cross from 26 to 13%. Heterosis for grain yield was manifested primarily in tillering and kernels per spike. Tillering increased by 6.9% and kernels per spike by 8.2%, while kernel weight increased by 1.0%, over the higher parent. An increase in plant height was observed. Milling and baking characteristics of F1 crosses, made within the soft wheat class, were closer to the softer quality parent. Baking quality declined in the F2 generation. Seed produced from two male sterile lines, however, had poorer milling and baking characteristics than seed from their self-fertile counterparts, and this may present a problem for soft quality flour production.

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