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Kansas Agricultural Experiment Station Research Reports

Seeding rate

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Wheat Variety-Specific Response To Seeding Rate Under Intensive Management Conditions In Western Kansas In 2019–2020, R. P. Lollato, B. R. Jaenisch Jan 2021

Wheat Variety-Specific Response To Seeding Rate Under Intensive Management Conditions In Western Kansas In 2019–2020, R. P. Lollato, B. R. Jaenisch

Kansas Agricultural Experiment Station Research Reports

Wheat response to seeding rate is variable and depends on resource availability during the growing season (e.g., fertility, moisture, and temperature). Our objective was to evaluate winter wheat population and grain yield responses to seeding rate and its interaction with variety in a highly-managed production system where manageable stresses were limited. One experiment evaluating the response of the wheat varieties Joe, WB-Grainfield, Langin, and LCS Revere to seeding rates ranging from 200,000 to 1,000,000 seeds per acre was established in a field managed by growers that consistently win state and national wheat yield contests near Leoti ...


Wheat Grain Yield Response To Seed Cleaning And Seed Treatment As Affected By Seeding Rate During The 2019–2020 Growing Season In Kansas, R. P. Lollato, B. R. Jaenisch, L. Haag Jan 2021

Wheat Grain Yield Response To Seed Cleaning And Seed Treatment As Affected By Seeding Rate During The 2019–2020 Growing Season In Kansas, R. P. Lollato, B. R. Jaenisch, L. Haag

Kansas Agricultural Experiment Station Research Reports

The objective of this project was to evaluate winter wheat stand count and grain yield responses to seeding rate and its interaction with seed cleaning and seed treatment in Kansas during the 2019–2020 growing season. Experiments evaluating the response of the wheat variety ‘SY Monument’ to three seeding rates (600,000, 900,000, and 1,200,000 seeds per acre), three seed cleaning intensities (none, air screen, and gravity table), and two seed treatments (none, and insecticide + fungicide) were established in a split-split plot design conducted in a complete factorial experiment in ten Kansas locations. In-season measurements included stand ...


Wheat Grain Yield Response To Seed Cleaning And Seed Treatment As Affected By Seeding Rate During The 2018–2019 Growing Season In Kansas, R. P. Lollato, K. Mark, B. R. Jaenisch, L. Haag Jan 2020

Wheat Grain Yield Response To Seed Cleaning And Seed Treatment As Affected By Seeding Rate During The 2018–2019 Growing Season In Kansas, R. P. Lollato, K. Mark, B. R. Jaenisch, L. Haag

Kansas Agricultural Experiment Station Research Reports

The objective of this project was to evaluate winter wheat stand count and grain yield responses to the interactions among seeding rate, seed cleaning, and seed treatment in the state of Kansas during the 2018–2019 growing season. Experiments evaluating the response of the wheat variety “SY Monument” to three seeding rates (600,000, 900,000, and 1,200,000 seeds per acre), three seed cleaning intensities (none, air screen, and gravity table), and two seed treatments (none and insecticide + fungicide) were estab­lished in a split-split plot design conducted in a complete factorial experiment at seven Kansas locations. In-season ...


Wheat Variety-Specific Grain Yield Response To Plant Density Under Intensive Management Conditions In Western Kansas, R. P. Lollato, K. Mark, B. R. Jaenisch Jan 2020

Wheat Variety-Specific Grain Yield Response To Plant Density Under Intensive Management Conditions In Western Kansas, R. P. Lollato, K. Mark, B. R. Jaenisch

Kansas Agricultural Experiment Station Research Reports

Seeding rate determines the first yield component of field crops, which is the plant population. However, wheat is less responsive to plant populations than other crops due to the high plasticity in tillering potential, and this responsiveness depends on resource availability. The objective of this project was to evaluate winter wheat popu­lation, grain yield, and grain test weight responses to seeding rate and its interaction with variety in a highly managed production system where manageable stresses were limited. Experiments evaluating the response of the wheat varieties ‘Joe,’ ‘WB-Grain­field,’ ‘Langin,’ and ‘LCS Revere’ to seeding rates ranging from 200 ...


Seeding Rate For Dryland Wheat, A. Schlegel, J. Holman, L. Haag Jan 2019

Seeding Rate For Dryland Wheat, A. Schlegel, J. Holman, L. Haag

Kansas Agricultural Experiment Station Research Reports

Four winter wheat varieties (PlainsGold Byrd, Limagrain T158, Syngenta TAM 111, and WestBred Winterhawk) were planted at five seeding rates (30, 45, 60, 75, and 90 lb/a) in the fall of 2014, 2015, 2016, and 2017 at Colby, Garden City, and Tribune, KS. The objective of the study is to identify appropriate seeding rates for dryland winter wheat in western Kansas. Averaged across varieties, a seeding rate of 60 lb/a seemed to be adequate at all locations in 2015. However, with higher yields in 2016, a higher seeding rate (75 lb/a) was beneficial. Although yields were less ...


Wheat Variety Response To Seeding Rate In Kansas During The 2018–19 Growing Season, R. P. Lollato, L. Molssato, C. Rapolla, G. Zhang, A. Fritz Jan 2019

Wheat Variety Response To Seeding Rate In Kansas During The 2018–19 Growing Season, R. P. Lollato, L. Molssato, C. Rapolla, G. Zhang, A. Fritz

Kansas Agricultural Experiment Station Research Reports

Different wheat varieties might require different seeding densities to maximize yield. Thus, the main objective of this project was to better understand the response of different wheat varieties to different seeding rates. Three field experiments were conducted during the 2017-18 growing season evaluating six wheat varieties subjected to five different seeding rates (0.6, 0.95, 1.3, 1.65, and 2.0 million seeds per acre). Crop was managed from a 70 bu/a yield goal and pests were controlled using commercially available pesticides. We measured final stand and grain yield, and all statistical analyses were performed for relating ...


Seeding Rate And Nitrogen Application Effects On Spring Oat And Triticale Forage, A. Obour, J. D. Holman, A. Schlegel Jan 2018

Seeding Rate And Nitrogen Application Effects On Spring Oat And Triticale Forage, A. Obour, J. D. Holman, A. Schlegel

Kansas Agricultural Experiment Station Research Reports

Spring oat and triticale are important forage crops in dryland and limited irrigated crop production systems in western Kansas. Previous research in western Kansas showed that growing spring forages in place of fallow reduced soil erosion and increased fallow precipitation use efficiency compared to summer fallow, and increased profitability compared to fallow in years with average to above average rainfall. Despite the great potential of spring forages, information on seeding rate and nitrogen fertilizer recommendations are limited. These management practices can affect forage productivity and nutritive value.

Current N fertilizer recommendations for oat and triticale are based on a very ...


Interaction Of Seeding And Nitrogen Rate On Grain Sorghum Yield In Southwest Kansas, A. J. Foster, A. Schlegel, J. D. Holman, I. A. Ciampitti, C. Thompson, D. Ruiz Diaz Jun 2017

Interaction Of Seeding And Nitrogen Rate On Grain Sorghum Yield In Southwest Kansas, A. J. Foster, A. Schlegel, J. D. Holman, I. A. Ciampitti, C. Thompson, D. Ruiz Diaz

Kansas Agricultural Experiment Station Research Reports

This study compared drilled planted sorghum at four seeding rates to planted sorghum at three different nitrogen (N) fertility levels at two locations in southwest Kansas (Garden City and Tribune). At the Garden City location, no difference was observed in yield among the drilled seeded sorghum populations greater than 27,000 seeds/a compared to the standard planted sorghum (sorghum planted at 27,000 seeds/a with a planter at 30 in.-row spacing). At Tribune, there was no difference in yield between the drilled sorghum and the standard planted sorghum (sorghum planted at 40,000 seeds/a with a ...


Genotype By Seeding Rate Interaction In Wheat, A. J. Azevedo, S. Varela, R. Lollato, I. A. Ciampitti Jan 2017

Genotype By Seeding Rate Interaction In Wheat, A. J. Azevedo, S. Varela, R. Lollato, I. A. Ciampitti

Kansas Agricultural Experiment Station Research Reports

Genotype by seeding rate interaction can play a critical role in understanding wheat (Triticum aestivum L.) yield potential. The objective of this study was to quantify wheat yield response to seeding rates by contrasting genotypes (high- vs. low-tillering). One study was planted at two locations: Ashland Bottoms (dryland and conventional tillage) and at Topeka (irrigated and no-tillage) field research stations (Kansas). The two winter wheat varieties were sown at four different seeding rates (40, 80, 120, and 160 lb/a). Measurements consisted of stand counts, canopy coverage (estimated via imagery collection), determination of early-season gaps in the final stand (missing ...


Seeding Rate For Dryland Wheat, A. Schlegel, J. D. Holman, L. Haag Jan 2017

Seeding Rate For Dryland Wheat, A. Schlegel, J. D. Holman, L. Haag

Kansas Agricultural Experiment Station Research Reports

Four winter wheat varieties (PlainsGold Byrd, Limagrain T158, Syngenta TAM 111, and WestBred Winterhawk) were planted at five seeding rates (30, 45, 60, 75, and 90 lb/a) in the fall of 2014 and 2015 at Colby, Garden City, and Tribune, KS. The objective of the study was to identify appropriate seeding rates for dryland winter wheat in western Kansas. Averaged across varieties, a seeding rate of 60 lb/a seemed to be adequate at all locations in 2015. However, with higher yields in 2016, a higher seeding rate (75 lb/a) was beneficial. The wheat variety T158 was the ...


Interaction Of Seeding And Nitrogen Rate On Grain Sorghum Yield In Southwest Kansas, A. J. Foster, A. Schlegel, J. D. Holman, I. A. Ciampitti, C. Thompson, Dorivar Ruiz Diaz Jan 2017

Interaction Of Seeding And Nitrogen Rate On Grain Sorghum Yield In Southwest Kansas, A. J. Foster, A. Schlegel, J. D. Holman, I. A. Ciampitti, C. Thompson, Dorivar Ruiz Diaz

Kansas Agricultural Experiment Station Research Reports

This study compared drilled planted sorghum at four seeding rates to planted sorghum at three different nitrogen (N) fertility levels at two locations in southwest Kansas (Garden City and Tribune). At the Garden City location, no difference was observed in yield among the drilled seeded sorghum populations greater than 27,000 seeds/a compared to the standard planted sorghum (sorghum planted at 27,000 seeds/a with a planter at 30 in.-row spacing). At Tribune, there was no difference in yield between the drilled sorghum and the standard planted sorghum (sorghum planted at 40,000 seeds/a with a ...


Optimum Seeding Rate For Different Wheat Varieties In Kansas, R. Lollato, G. Cramer, A. K. Fritz, G. Zhang Jan 2017

Optimum Seeding Rate For Different Wheat Varieties In Kansas, R. Lollato, G. Cramer, A. K. Fritz, G. Zhang

Kansas Agricultural Experiment Station Research Reports

Seeding rate is an important management practice affecting wheat yield. Wheat varieties differ in their tillering capacity and therefore in their yield response to seeding rate. Our objectives were to evaluate the tillering and yield response of different modern wheat varieties to seeding rate. The study was conducted in Hutchinson and Manhattan, KS, during the 2015-16 growing season. Seven wheat varieties (Everest, KanMark, 1863, Joe, Tatanka, Larry, and Zenda) were sown at five different seeding rates (0.6, 0.95, 1.3, 1.65, and 2 million seeds per acre). Tiller number and grain yield were measured in the spring ...


Seeding Rate For Dryland Wheat, A. Schlegel, J. D. Holman, L. Haag Jan 2016

Seeding Rate For Dryland Wheat, A. Schlegel, J. D. Holman, L. Haag

Kansas Agricultural Experiment Station Research Reports

Four winter wheat varieties (Plainsgold Byrd, Limagrain T158, Syngenta TAM 111, and WestBred Winterhawk) were planted at five seeding rates (30, 45, 60, 75, and 90 lb/a) in the fall of 2014 at Colby, Garden City, and Tribune, KS. The objective of the study is to identify appropriate seeding rates for dryland winter wheat in western Kansas. Averaged across varieties, a seeding rate of 60 lb/a seemed to be adequate at all locations in 2015. The wheat variety T158 was the highest yielding (or in the highest group) at all locations. Other varieties may have been affected by ...


Seeding Rates And Fertilizer Placement To Improve Strip-Till And No-Till Corn, D. W. Sweeney Jan 2015

Seeding Rates And Fertilizer Placement To Improve Strip-Till And No-Till Corn, D. W. Sweeney

Kansas Agricultural Experiment Station Research Reports

In 2013, late planting resulted in corn yields that were less than 110 bu/a. Yields were not increased with seeding rates above 26,000/a, but a small increase in yield was obtained with knife applications of fertilizer nitrogen (N) compared with dribble.