The effect of seeding rate and row spacing on yields of Spanish peanuts at Katherine, N.T

1970 ◽  
Vol 10 (42) ◽  
pp. 95 ◽  
Author(s):  
IMW Wood
Keyword(s):  
Soil Moisture ◽  
Unit Length ◽  
Plant Population ◽  
Row Spacing ◽  
Seeding Rate ◽  
Plant Stand ◽  
Lower Plant ◽  
Spanish Peanut

In experiments at Katherine, N.T., yields of the Spanish peanut, variety Spantex, were not increased by sowing in twin rows spaced G inches apart with 3 feet between the pairs of rows, in comparison with normal single rows sown 3 feet apart. Establishment was, however, improved by up to 12 per cent by sowing in twin rows, presumably owing to reduced competition for soil moisture with the lower plant population per unit length of row. Yields were little affected by plant population in the range 40,000-120,000 plants an acre, corresponding to sowing rates of 50 to 200 lb an acre of kernels. In one season a significant increase of 240 lb an acre (9 per cent) of nuts-in-shell was obtained by increasing the sowing rate from 50 to 100 lb an acre. In two other seasons, however, yields were not affected by the change in plant population. Planting on formed beds led to a reduction of G per cent in establishment compared with flat planting; but yields were not affected. The optimum seeding rate for Spantex at Katherine, N.T., is considered to be approximately 50 lb an acre, giving a plant stand of approximately 40,000 plants an acre.

EFFECT OF ROW SPACING AND SEEDING RATES ON SUMMER RAPE IN SOUTHERN MANITOBA

1990 ◽  
Vol 70 (1) ◽  
pp. 127-137 ◽  
Author(s):  
M. J. MORRISON ◽  
P. B. E. McVETTY ◽  
R. SCARTH
Keyword(s):  
Brassica Napus ◽  
Seed Quality ◽  
Plant Density ◽  
Chlorophyll Concentration ◽  
Plant Distribution ◽  
Row Spacing ◽  
Seeding Rate ◽  
Brassica Napus L ◽  
Plant Densities ◽  
Lower Plant

To determine the effects of varying plant densities on summer rape (Brassica napus L.), the cultivar Westar was seeded in 15- and 30-cm row spacings at seeding rates of 1.5, 3.0, 6.0, and 12.0 kg ha−1. Plants seeded in 15-cm rows yielded more per area, produced more pods per plant and lodged less than those in 30-cm rows. Higher yields were associated with a more even plant distribution and a lower degree of intra-row competition. There were no significant protein, oil and chlorophyll concentration differences between the row spacing treatments. The highest yields (kg ha−1) were achieved with the 1.5 and 3.0 kg ha−1 seeding rates. Summer rape compensated for lower plant densities with the production of more branch racemes. As seeding rate increased, competitive mortality increased, resulting in greater etiolation at bolting, and greater lodging at harvest. Seed oil and protein concentrations were not affected by seeding rate. However, seed chlorophyll concentration decreased with increased seeding rate.Key words: Brassica napus, plant density, seed quality, rape (summer)

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 Grain Sorghum Response to Row Spacing and Plant Populations in the Texas Coastal Bend Region

2012 ◽  
Vol 2012 ◽  
pp. 1-6 ◽  
Author(s):  
Carlos J. Fernandez ◽  
Dan D. Fromme ◽  
W. James Grichar
Keyword(s):  
Grain Sorghum ◽  
Plant Population ◽  
Growth And Yield ◽  
Row Spacing ◽  
Plant Populations ◽  
Single Row ◽  
Average Rainfall ◽  
Opportune Time ◽  
Lower Plant ◽  
Sorghum Bicolor L

Two grain sorghum (Sorghum bicolor L. Moench) studies were conducted in the Coastal Bend Region of Texas over a two-year period. In one study, sorghum growth and yield were compared when planted in a single row on beds or planted in twin rows on beds with different plant populations under dryland or irrigation. Above average rainfall occurred in May 2000 which resulted in twin rows at any plant population producing higher yields than the single row at lower plant population. In 2001, single-row plantings with either plant population (124,000–160,000 or 161,000–198,000 plants/ha) produced higher yield than twin rows planted at 161,000–198,000 plants/ha. Under irrigation, twin rows planted at 161,000–198,000 plants/ha produced higher yields than single row at the same population; however, no other yield differences were noted when row systems or plant populations were compared. In another study, 38 cm row spacings were compared with 76 cm row spacings under two plant populations. In 2000, when rains fell at an opportune time, no yield differences were noted; however, in 2001 with below average rainfall, the 76 cm plantings at 170,000–200,000 and 210,000–240,000 plants/ha produced higher yield than the 38 cm plantings at those same plant populations.

Impact of cultivar, row spacing and seeding rate on ascochyta blight severity and yield of chickpea

2007 ◽  
Vol 87 (2) ◽  
pp. 395-403 ◽  
Author(s):  
K. F. Chang ◽  
H. U. Ahmed ◽  
S. F. Hwang ◽  
B. D. Gossen ◽  
R. J. Howard ◽  
...  
Keyword(s):  
Population Density ◽  
Disease Severity ◽  
Seed Yield ◽  
Plant Density ◽  
Ascochyta Blight ◽  
Plant Population ◽  
Row Spacing ◽  
Seeding Rate ◽  
Plant Population Density ◽  
Wide Row Spacing

Field trials to assess the impact of chickpea type (desi vs. kabuli), row spacing and seeding rate on ascochyta blight of chickpea were conducted over 2 yr at Brooks, Alberta. A compound-leaved desi chickpea cultivar and unifoliate kabuli cultivar were sown at 20, 30 and 40 cm row spacing, and at three seeding rates (20, 40 and 60 seeds per 3 m row). Most of the variation in disease severity was associated with differences between the cultivars. Seeding rate, row spacing and their interactions had substantially smaller effects on ascochyta blight in comparison with cultivar effects. Late in the growing season, blight severity was consistently lower in the desi than the kabuli cultivar. Wide row spacing and low seeding rate reduced ascochyta blight severity and increased seed yield per plant. Wide row spacing in the first year reduced the seed yield per hectare, but row spacing did not significantly affect yield in 2005. Low in-row seeding rates increased yield only in 2004. There was a positive linear relationship between plant density and blight severity, and a negative relationship between yield per plant and both plant density and disease severity. We conclude that reduced plant population density could be one tool in a program to manage ascochyta blight of chickpea. Key words: Cicer arietinum, plant population density, ascochyta blight, yield

INFLUENCE OF LOW SEEDING RATES ON WHEAT YIELD IN SOUTHWESTERN SASKATCHEWAN

1969 ◽  
Vol 49 (5) ◽  
pp. 607-614 ◽  
Author(s):  
W. L. Pelton
Keyword(s):  
Soil Moisture ◽  
Field Experiment ◽  
Spring Wheat ◽  
Unit Area ◽  
Wheat Yield ◽  
Moisture Stress ◽  
Plant Population ◽  
Population Differences ◽  
Seeding Rate ◽  
Plant Survival

Spring wheat seeding rates of 22, 45, 67, and 101 kg/ha were compared in a field experiment on a medium-textured soil at Swift Current, Saskatchewan, over the period 1960–1968. Data collected during eight years indicated that when weeds, insects and diseases were chemically controlled, low seeding rates produced significantly more grain than higher seeding rates, with greatest increases occurring during years of severe moisture stress. Low seeding rates produced longer heads, heavier kernels, and in some cases taller plants. Plant population differences resulting from the variation in seeding rate were largely eliminated by plant survival and tillering. The number of mature kernels per unit area did not differ significantly for all treatments.Seeding rates had an effect on the rate at which moisture was used by the crop. Soil moisture supplies were quickly exhausted on plots seeded at rates of 67 and 101 kg/ha, whereas moisture was available to the crop seeded at lower rates over a longer period. The crop seeded at 22 kg/ha matured 3 to 5 days later than that seeded at 101 kg/ha.

The influence of inter-row and intra-row cultivation on the yield of grain sorghum at Katherine, N.T

1962 ◽  
Vol 2 (7) ◽  
pp. 204 ◽  
Author(s):  
LJ Phillips ◽  
MJT Norman
Keyword(s):  
Soil Moisture ◽  
Small Variation ◽  
Grain Sorghum ◽  
Plant Population ◽  
Row Spacing ◽  
Similar Group ◽  
The Mean ◽  
Moisture Conditions

Three experiments concerned with inter-row spacing, plant population, and inter-row cultivation of grain sorghum were carried out at Katherine, N.T., in 1957-58, 1958-59 and 1961-62. In 1957-58 and 1958-59, 7 inch, 18 inch, and 36 inch row spacing, with inter-row cultivation treatments at the wider spacings, were compared at three population lever's. Conflicting responses to row spacing between years were recorded. Interactions between population and row spacing indicated 204 an optimum within-row plant distance OJ' 6-12 inches for all inter-row spacings. At 18 inch and 36 inch raw spacings, one cultivation was beneficial, but not two. In 1961-62, a similar group of row spacing and cultivation treatments WGV compared at a standard within-row plant distance of 9 inches. As a mean of three years, yield differences between 9 inch, 18 inch and 36 inch rows were relatively small. Variation between years was attributed to soil moisture conditions. The mean response to one cultivation in 18 inch and 36 inch rows was approximately 7 per cent.

scholarly journals Effect of row spacing, seeding rate and nitrogen fertilization on yield and yield components of soybean

2020 ◽  
Vol 70 (4) ◽  
pp. 221-236
Author(s):  
Reinhard W. Neugschwandtner ◽  
Johanna Winkler ◽  
Maria Bernhart ◽  
Michael A. Pucher ◽  
Martin Klug ◽  
...  
Keyword(s):  
Grain Yield ◽  
Yield Components ◽  
Plant Density ◽  
N Fertilization ◽  
Kernel Weight ◽  
Row Spacing ◽  
Seeding Rate ◽  
Higher Plant ◽  
One Year ◽  
Lower Plant

Summary Soybean crop management have not been studied much in Central Europe as compared with cereals. We assessed the effect of variety, row spacing, seeding rate and nitrogen (N) fertilization on yields and yield components of soybean in a two-year experiment in Gleisdorf, Austria. The varieties Lenka, Naya and Xonia were tested in row spacings of 13 cm, 38 cm and 76 cm with 30 germinable seeds m−2. Additionally, 60 seeds m−2 were tested at 13 cm row spacing, and 38 cm row spacing was additionally established with N fertilization. Faster soil coverage was obtained with a high seeding rate or narrower row spacings. First pod height differed between varieties and increased with higher seeding rate. Grain yield was not affected by treatments but yield components differed. The widest row spacing resulted in a lower plant density but more pods plant−1, grains plant−1, grains pod−1 (in one year) and a higher thousand kernel weight (TKW). The higher seeding rate resulted in a higher plant density but less pods plant−1 whereas grains pod−1 and TKW did not differ. N fertilization did not affect the grain yield. Correlation analysis showed a high adaptability of soybean to different seeding rates and row spacings through modulation of yield components.

scholarly journals Individual and Combined Effects of Planting Date, Seeding Rate, Relative Maturity, and Row Spacing on Soybean Yield

Agronomy ◽  
2021 ◽  
Vol 11 (3) ◽  
pp. 605
Author(s):  
Peder K. Schmitz ◽  
Hans J. Kandel
Keyword(s):  
Seed Yield ◽  
Management Practices ◽  
Synergistic Effects ◽  
Canopy Cover ◽  
Planting Date ◽  
Row Spacing ◽  
Growth Stages ◽  
Seeding Rate ◽  
Yield Increase ◽  
Beginning Of Flowering

Planting date (PD), seeding rate (SR), relative maturity (RM) of cultivars, and row spacing (RS) are primary management factors affecting soybean (Glycine max (L.) Merr.) yield. The individual and synergistic effects of PD, SR, RM, and RS on seed yield and agronomic characteristics in North Dakota were herein investigated. Early and late PD, early and late RM cultivars, two SR (408,000 and 457,000 seed ha−1), and two RS (30.5 and 61 cm) were evaluated in four total environments in 2019 and 2020. Maximizing green canopy cover prior to the beginning of flowering improved seed yield. Individual factors of early PD and narrow RS resulted in yield increase of 311 and 266 kg ha−1, respectively. The combined factors of early PD, late RM, high SR, and narrow RS improved yield by 26% and provided a $350 ha−1 partial profit over conventional practices. Canopy cover and yield had relatively weak relationships with r2 of 0.36, 0.23, 0.14, and 0.21 at the two trifoliolate, four trifoliolate, beginning of flowering, and beginning of pod formation soybean growth stages, respectively. Producers in the most northern soybean region of the USA should combine early planting, optimum RM cultivars, 457,000 seed ha−1 SR, and 31 cm RS to improve yield and profit compared to current management practices.

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.

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