YIELD RESPONSE OF SPRING BARLEY TO ROW SPACING AND SEEDING RATE

1971 ◽  
Vol 51 (6) ◽  
pp. 527-533 ◽  
Author(s):  
R. C. FINLAY ◽  
E. REINBERGS ◽  
T. B. DAYNARD
Keyword(s):  
Spring Barley ◽  
Relative Size ◽  
Morphological Type ◽  
Cultivar Differences ◽  
Yield Response ◽  
Row Spacing ◽  
Seeding Rate ◽  
Hordeum Vulgare L ◽  
Testing Procedures ◽  
Row Width

Four cultivars of Hordeum vulgare L. were grown in 1967 at three seeding rates (54, 108, and 161 kg/ha) in six row spacings (11-, 18-, 23-, and 31-cm rows, and 11- and 18-cm cross-planted rows). The study was expanded in 1968 to include an additional cultivar of Hordeum distichum L. Grain yield was unaffected by seeding rate in either year. Narrow row spacing resulted in increased grain yields in 1968, when mean yields were high, but not in 1967 when yields were below normal. In both years, decreased row width resulted in increased numbers of spikes per m2 of ground area, and decreased numbers of grains per spike. A significant cultivar × row spacing interaction for yield was observed in 1968, but not in 1967. Statistical analysis revealed this interaction to be closely related to cultivar yield levels; that is, high yielding cultivars displayed a greater response to narrowing row spacing than did their lower-yielding counterparts. No consistent relationship was observed between cultivar yield differences, or the cultivar × row spacing interaction for yield, and cultivar differences in morphological type (leaf disposition, plant height). Furthermore, cultivar differences in yield were not related to the relative size of the various yield components (1000-grain weight, grains per spike, and spikes per m2). Although a cultivar × row spacing interaction for yield was observed, results suggest that, under Ontario conditions, this interaction does not represent a serious drawback to present cultivar testing procedures whereby cultivars are evaluated for yield at a single row width spacing.

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

Comparison of crop management effects on spring barley cultivars grown on three soil types in southwestern Quebec

1993 ◽  
Vol 73 (4) ◽  
pp. 927-938 ◽  
Author(s):  
D. L. Smith ◽  
B. L. Ma ◽  
S. Leibovitch ◽  
S. Lussier ◽  
W. E. Maloba
Keyword(s):  
Spring Barley ◽  
Soil Types ◽  
Yield Response ◽  
Soil Conditions ◽  
Row Spacing ◽  
N Recovery ◽  
Hordeum Vulgare L ◽  
Barley Cultivars ◽  
Mcgill University

There may be potential to increase grain yield and/or quality of barley (Hordeum vulgare L.) under the short crop-growing season conditions of Southwestern Quebec with intensive cereal management (ICM) practices similar to those used successfully in Europe. A field experiment was conducted for 4 yr (1987–1990) at the Macdonald Campus of McGill University to evaluate the applicability of ICM (140 kg N ha−1, 480 g a.i. ethephon ha−1, 70 g triadimefon ha−1 and 10-cm row spacing) vs. conventional cereal management (CCM) (70 kg N ha− and 20-cm row spacing) on spring barley. Four barley cultivars (Cadette, Joly, Laurier and Leger) were grown on three soil types: Bearbrook clay, St. Bernard loam and Chicot loamy sand. Grain yields of most cultivars were either unchanged or decreased 5–30% by ICM whereas Laurier occasionally yielded better under ICM than CCM. A general increase in spikes m−2 that resulted from ICM was largely offset by a reduction in grains per spike. Although ICM increased crude protein concentrations in grain and straw, use of 15N-labelled fertilizer showed a lower N recovery rate. The results indicated that yield response to ICM was inconsistent and was influenced to a large extent by prevailing weather and soil conditions. The ICM package tested is not applicable in this region. Key words: Conventional cereal management (CCM), intensive cereal management (ICM), 15N, nitrogen recovery, protein, soil type, spring barley

scholarly journals Effect of Row Spacing and Seeding Rate on Russian Thistle (Salsola tragus) in Spring Barley and Spring Wheat

Plants ◽  
2021 ◽  
Vol 10 (1) ◽  
pp. 126
Author(s):  
Judit Barroso ◽  
Nicholas G. Genna
Keyword(s):  
Seed Production ◽  
Crop Yield ◽  
Spring Wheat ◽  
Plant Biomass ◽  
Integrated Management ◽  
Spring Barley ◽  
Management Strategies ◽  
Crop Productivity ◽  
Row Spacing ◽  
Seeding Rate

Russian thistle (Salsola tragus L.) is a persistent post-harvest issue in the Pacific Northwest (PNW). Farmers need more integrated management strategies to control it. Russian thistle emergence, mortality, plant biomass, seed production, and crop yield were evaluated in spring wheat and spring barley planted in 18- or 36-cm row spacing and seeded at 73 or 140 kg ha−1 in Pendleton and Moro, Oregon, during 2018 and 2019. Russian thistle emergence was lower and mortality was higher in spring barley than in spring wheat. However, little to no effect of row spacing or seeding rate was observed on Russian thistle emergence or mortality. Russian thistle seed production and plant biomass followed crop productivity; higher crop yield produced higher Russian thistle biomass and seed production and lower crop yield produced lower weed biomass and seed production. Crop yield with Russian thistle pressure was improved in 2018 with 18-cm rows or by seeding at 140 kg ha−1 while no effect was observed in 2019. Increasing seeding rates or planting spring crops in narrow rows may be effective at increasing yield in low rainfall years of the PNW, such as in 2018. No effect may be observed in years with higher rainfall than normal, such as in 2019.

Integrated Wild Oat (Avena fatua) Management Affects Spring Barley (Hordeum vulgare) Yield and Economics

1992 ◽  
Vol 6 (1) ◽  
pp. 129-135 ◽  
Author(s):  
David L. Barton ◽  
Donald C. Thill ◽  
Bahman Shafii
Keyword(s):  
Grain Yield ◽  
Field Experiments ◽  
Control Strategies ◽  
Integrated Control ◽  
Spring Barley ◽  
Barley Grain ◽  
Row Spacing ◽  
Wild Oat ◽  
Seeding Rate ◽  
Net Return

The effect of barley seeding rate and row spacing, and triallate, diclofop, and difenzoquat herbicide rate on barley grain yield and quality, and wild oat control were evaluated in field experiments near Bonners Ferry, Idaho, in 1989 and 1990. The purpose of the study was to develop integrated control strategies for wild oat in spring barley. Barley row spacing (9 and 18 cm) did not affect barley grain yield. Barley grain yield was greatest when barley was seeded at 134 or 201 kg ha–1compared to 67 kg ha–1. Wild oat control increased as wild oat herbicide rate increased and barley grain yield was greatest when wild oat herbicides were applied. However, barley grain yield was similar when wild oat biomass was reduced by either 65 or 85% by applications of half and full herbicide rates, respectively. Net return was greatest when the half rate of herbicide was applied to 100 wild oat plants per m2and was greatest when half or full herbicide rates were applied to 290 wild oat plants per m2. Net return increased when the seeding rate was increased to 134 or 201 kg ha–1when no herbicide was applied and when 290 wild oat plants per m2were present.

YIELD RESPONSE OF RAPESEED TO ROW SPACING AND RATES OF SEEDING AND N-FERTILIZATION IN INTERIOR ALASKA

1987 ◽  
Vol 67 (1) ◽  
pp. 53-57 ◽  
Author(s):  
C. E. LEWIS ◽  
C. W. KNIGHT
Keyword(s):  
Nitrogen Fertilization ◽  
Fertilization Rate ◽  
N Fertilization ◽  
Yield Response ◽  
Row Spacing ◽  
Regression Equations ◽  
Seeding Rate ◽  
Interior Alaska ◽  
Effect On Yield ◽  
High Precipitation

The effects of row spacings, seeding rates, and N-fertilization rates on yield of Candle, a cultivar of Brassica campestris L., were studied for 2 yr in interior Alaska. Rows were spaced at 18 and 36 cm. Seeding rates were 3, 7 and 13 kg ha−1. Fertilizer N was broadcast at 0, 55, 90, 125, 160 and 195 kg ha−1. Seed yield was not significantly affected by row spacing in either year of the study. Seeding rate did not significantly affect yield in 1978. In 1979, however, an interaction was detected between seeding rate and N-fertilization rate. During this year of abnormally high precipitation, when no N was applied, stands seeded at 3 kg ha−1 produced higher yields than those seeded at higher rates. With an initial N application of 55 kg ha−1, yields decreased from stands seeded at 3 kg ha−1, while yields from those seeded at 7 and 13 kg ha−1 increased. Nitrogen fertilization had a significant effect on yield in both 1978 and 1979. Regression equations from both years (with the exception of that for the 3 kg ha−1 seeding rate in 1979) predicted maximum yields from N applications between 89 and 105 kg ha−1.Key words: Rapeseed, row spacing, seeding rate, nitrogen fertilization, yield

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

Effects of row spacing, seeding rate and nitrogen on yield of barley and wheat under zero-till management

1994 ◽  
Vol 74 (4) ◽  
pp. 703-711 ◽  
Author(s):  
G. P. Lafond
Keyword(s):  
Grain Yield ◽  
Triticum Aestivum L ◽  
Row Spacing ◽  
Continuous Cropping ◽  
Seeding Rate ◽  
Hordeum Vulgare L ◽  
Canadian Prairies ◽  
Tillage Practices ◽  
Wide Range ◽  
Growing Conditions

Adopting water-conserving tillage practices on the Canadian prairies will protect the soil against erosion while conserving soil water. The use of tall-standing stubble to conserve water creates a dilemma for producers because maximum yields can only be obtained with narrow rows, and tall stubble may limit the use of narrow row spacings. A 4-yr study on a thin Black clay soil investigated the effects of three row spacings (10, 20 and 30 cm), six seeding rates (34, 67, 100, 134, 168 and 202 kg ha−1 for wheat and 27, 54, 81, 108, 134 and 161 kg ha−1 for barley) and two rates of N (low and high) in hard red wheat (Triticum aestivum L.), durum (Triticum durum L.) and barley (Hordeum vulgare L.) using a continuous cropping, zero-till production system. The yields of cereals were maintained with 30-cm row spacing over a wide range of growing conditions under zero-till management. Durum had a 5.8% yield advantage and barley a 2.4% advantage for the 30-cm row spacing over the 10-cm row spacing. The number of plants established and the number of spikes produced decreased as row spacing increased for all crops. But wider row spacing resulted in more kernels produced per spike, which, in the case of barley and durum, more than compensated for the lower number of spikes. Increasing seeding rates significantly improved grain yield in all crops and years because more spikes were produced. Grain yield was related to the reciprocal of seeding rate. The few row spacing × seeding rate interactions observed in 2 of 12 cases suggest that seeding rates need not be adjusted for changes in row spacing. The results obtained have important implications for equipment design and the ability to more easily handle high-crop-residue situations. Key words: Yield components, seeding rate, row spacing, yield compensation

scholarly journals Too much fertilizer? An observational association between inputs at planting and crop yield on a Saskatchewan farming operation

2020 ◽  
Vol 100 (4) ◽  
pp. 435-444
Author(s):  
Tyler Pittman
Keyword(s):  
Crop Yield ◽  
Precision Agriculture ◽  
Triticum Turgidum ◽  
Inorganic Nitrogen ◽  
Spring Barley ◽  
Fertilizer Application ◽  
Semiarid Region ◽  
Seeding Rate ◽  
Hordeum Vulgare L ◽  
Brassica Napus L

Grain yield and its variability is a major driver of seeding rate and inorganic fertilizer use at planting among grain growers. Recommended rates for fertilizer application with regard to crop utilization and soil management are discretionary and vary between producer and agronomist. This observational case study with Bayesian inference examines the association between application rates of inorganic nitrogen, phosphorus, potassium chloride and sulphur at planting, and yield of durum wheat (Triticum turgidum L.), large green lentils (Lens culinaris Medik.), canola (Brassica napus L.), canaryseed (Phalaris canariensis L.), and spring barley (Hordeum vulgare L.). Using precision agriculture, input and crop yield information for each parcel of cultivated land was collected over a 4 yr period from 2015 to 2018 on a continuous no-till farming operation in the semiarid region of Saskatchewan, Canada. Hierarchical models were derived that accounted for yield variability in crop types due to the random effects of field, cultivar, crop planted in previous year, planting year, combine machine, observation location within field, and elevation. Evidence from this longitudinal study suggests that seed-placed fertilizer above the recommended safe rate can be associated with yield decline on farming operations in the semiarid environment of Saskatchewan, Canada.

INFLUENCE OF ROW WIDTH AND MANEB FUNGICIDE TREATMENT ON DISEASE DEVELOPMENT AND GRAIN YIELDS OF CEREALS

1976 ◽  
Vol 56 (2) ◽  
pp. 231-236 ◽  
Author(s):  
R. V. CLARK
Keyword(s):  
Avena Sativa ◽  
Seed Quality ◽  
Triticum Aestivum L ◽  
Row Spacing ◽  
Disease Development ◽  
Hordeum Vulgare L ◽  
Lodging Resistance ◽  
Fungicide Treatment ◽  
Row Width ◽  
Seed Yields

Growing cereals in rows spaced 35.6 and 53.3 cm apart resulted in significantly reduced seed yields of approximately 30% and no improvement in lodging resistance compared with rows spaced 17.8 cm apart. However, the application of maneb fungicide to the foliage on a regular basis significantly increased seed yields of oats (Avena sativa L.) and considerably increased those of wheat (Triticum aestivum L.) and barley (Hordeum vulgare L.), when compared with unsprayed plants at the same row width. Spraying with maneb increased seed yields of the three cereals by 18, 40, and 30% at row spacings of 17.8, 35.6, and 53.3 cm, respectively, but maximum yields were obtained at the 17.8-cm row spacing. The maneb fungicide controlled most diseases, eliminated lodging, and greatly improved straw and seed quality.

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.

Sign in / Sign up

Export Citation Format

Share Document