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Articles 1 - 30 of 66
Full-Text Articles in Life Sciences
East Central Kansas Experiment Field Introduction, E. A. Adee
East Central Kansas Experiment Field Introduction, E. A. Adee
Kansas Agricultural Experiment Station Research Reports
The research program at the East Central Kansas Experiment Field is designed to keep area crop producers abreast of technological advances in agronomic agriculture. Specific objectives are to (1) identify top-performing varieties and hybrids of wheat, corn, soybean, and grain sorghum; (2) establish the amount of tillage and crop residue cover needed for optimum crop production; (3) evaluate weed and disease control practices using chemical, no chemical, and combination methods; and (4) test fertilizer rates, timing, and application methods for agronomic proficiency and environmental stewardship.
Effects Of Seed Treatment On Sudden Death Syndrome Symptoms And Soybean Yield, E. A. Adee
Effects Of Seed Treatment On Sudden Death Syndrome Symptoms And Soybean Yield, E. A. Adee
Kansas Agricultural Experiment Station Research Reports
Sudden death syndrome (SDS) is a soybean disease that perennially limits yields in the Kansas River Valley. The presence of soybean cyst nematode (SCN) and saturated soils have been implicated in contributing to the severity of the disease. Selecting varieties with some degree of tolerance to SDS is the only cultural practice that can potentially reduce the severity of SDS and improve yields. Variety selection alone, however, cannot improve the production of soybeans to make them profitable. The challenge of trying to manage irrigation scheduling to avoid saturated soils further complicates efforts to increase productivity with irrigation while still avoiding …
Effects Of An Experimental Seed Treatment From Dupont On Sudden Death Syndrome Symptoms And Soybean Yield, E. A. Adee
Effects Of An Experimental Seed Treatment From Dupont On Sudden Death Syndrome Symptoms And Soybean Yield, E. A. Adee
Kansas Agricultural Experiment Station Research Reports
Sudden death syndrome (SDS) is a soybean disease that perennially limits yields in the Kansas River Valley. Soybean cyst nematode (SCN) and saturated soils contribute to the severity of the disease. Selecting varieties with some degree of tolerance to SDS is the only cultural practice that can reduce the severity of SDS and improve yields. Variety selection alone, however, doesn’t necessarily make soybean production profitable; an added complication is managing irrigation scheduling to avoid saturated soils. A study with seed treatments applied to soybean was conducted at the Kansas River Valley Experiment Field in 2014, with treatments applied to two …
Forage Sorghum Performance Trial, J. L. Moyer, E. A. Adee
Forage Sorghum Performance Trial, J. L. Moyer, E. A. Adee
Kansas Agricultural Experiment Station Research Reports
In our sorghum trials, production of forage was greater (P<0.05) for ‘FS 4’ and ‘AF 7401’ than for ‘AF 7202,’ possibly related to differences in maturity. Estimated grain production was greater for ‘AF 7401’ than for all others, except for ‘AF 7102.’
Seeding Date Effects On Camelina Seed Yield And Quality Traits, E. Obeng, A. Obour
Seeding Date Effects On Camelina Seed Yield And Quality Traits, E. Obeng, A. Obour
Kansas Agricultural Experiment Station Research Reports
Identifying crops that are adapted to dryland environments of the central and northern Great Plains (GP) has been a major challenge. An alternative crop with potential for dryland crop production in the GP is camelina (Camelina sativaL. Crantz). Time of planting is an important management consideration that can affect camelina production. Early planting allows camelina to mature before the onset of hot summer temperatures in the central GP that can affect seed yield. A study was carried out in the spring of 2013 and 2014 to evaluate planting date effects on spring camelina varieties grown under dryland conditions …
Influence Of Different Seeding Dates On Fenugreek (Trigonella Foenum-Graecum L.) Forage Yield And Nutritive Value, A. Obour, E. Obeng, J. D. Holman
Influence Of Different Seeding Dates On Fenugreek (Trigonella Foenum-Graecum L.) Forage Yield And Nutritive Value, A. Obour, E. Obeng, J. D. Holman
Kansas Agricultural Experiment Station Research Reports
Fenugreek (Trigonella foenum-graecum L.) is used as medicinal plant in many Asian countries and has been reported to have forage quality similar to alfalfa. Fenugreek is an annual crop and may have the potential to diversify forage production systems in the central High Plains. This study evaluated forage dry matter (DM) production and the nutritive value of three fenugreek cultivars as influenced by planting date at Hays and Garden City, KS, in 2014. Results at Hays showed forage DM yield of fenugreek cultivars was not affected by planting date, but fenugreek cultivars differed significantly (P<0.05) in forage DM yield. Averaged across planting date, forage DM production was 760 lb/a for ‘Amber,’ 910 lb/a for ‘F96,’ and 672 lb/a for ‘Tristar.’ Forage crude protein (CP), acid detergent fiber (ADF), neutral detergent fiber (NDF), total digestible nutrient (TDN) concentrations, and relative feed value (RFV) did not differ (P>0.05) …
Balanced Nutrition And Crop Production Practices For Closing Grain Sorghum Yield Gaps, B. Mchenry, E. A. Adee, P. V. Vara Prasad, I. A. Ciampitti
Balanced Nutrition And Crop Production Practices For Closing Grain Sorghum Yield Gaps, B. Mchenry, E. A. Adee, P. V. Vara Prasad, I. A. Ciampitti
Kansas Agricultural Experiment Station Research Reports
A field experiment was conducted at the East Central Kansas Experiment Field near Ottawa, KS, and at the Kansas River Valley Experiment Field near Rossville, KS, in the summer of 2014 to evaluate diverse cropping systems approaches on closing sorghum yield gaps. Yield gaps can be understood as the difference between maximum yield and attainable on-farm yields. The factors that were tested include narrow row spacing; plant population; balanced nutrition practices, including various timings of nitrogen, phosphorus, and potassium (NPK) and micronutrient applications; crop protection with fungicide and insecticide applications; plant growth regulator effects; and the use of precision ag …
Breaking Soybean Yield Barriers: A Cropping Systems Approach, G. R. Balboa, I. A. Ciampitti
Breaking Soybean Yield Barriers: A Cropping Systems Approach, G. R. Balboa, I. A. Ciampitti
Kansas Agricultural Experiment Station Research Reports
Two soybean research trials were conducted at Scandia, KS, in dryland and irrigated environments. The objective of this trial was to study the contribution of different farming systems to developing efficient and high-yielding soybean production systems. Each experiment had five treatments: farmer practices (FP), comprehensive fertilization (CF), production intensity (PI), ecological intensification (CF + PI), and advanced plus (AD). Under dryland, FP and CF treatments yielded 34 bu/a, differing in 27 bu/a compared with PI, EI, and AD scenarios. Under irrigation, FP and CF presented comparable yield levels, differing by close to 36 bu/a compared with crop intensification treatments (CF …
Corn Yield Response To Water Availability, T. Newell, K. Roozeboom, G. J. Kluitenberg, I. A. Ciampitti
Corn Yield Response To Water Availability, T. Newell, K. Roozeboom, G. J. Kluitenberg, I. A. Ciampitti
Kansas Agricultural Experiment Station Research Reports
Drought-tolerant technologies have become popular in hybrids for low-yielding corn environments across central and western Kansas and are marketed for their ability to produce higher grain yields with less water. The objective of this study was to compare water use, yield, and water use efficiency (WUE) of two types of drought-tolerant (DT) corn hybrids and a high-yielding non-DT hybrid. Water use and yield of two DT and one non-DT, high-yielding hybrid were compared in both dryland and irrigated situations. The average yield for the irrigated corn was 217 bu/a, and the average was 127 bu/a in dryland, representing a yield …
Cover Crop Impacts On Soil Water Status, M. Kuykendall, K. Roozeboom, G. J. Kluitenberg, P. V. Vara Prasad
Cover Crop Impacts On Soil Water Status, M. Kuykendall, K. Roozeboom, G. J. Kluitenberg, P. V. Vara Prasad
Kansas Agricultural Experiment Station Research Reports
Water is a primary concern for producers in the Great Plains; as such, research is warranted to quantify how much cover crops affect the amount of soil water available to subsequent cash crops. Cover crop mixes have been marketed as a means to conserve water in no-till cropping systems following winter wheat (Triticum aestivumL.) harvest. The objectives of this study are to quantify changes in soil profile water content in the presence of different cover crops and mixtures of increasing species complexity, to quantify their biomass productivity and quality, and to quantify the impact of cover crops on …
Tillage And Nitrogen Placement Effects On Yields In A Short-Season Corn/Wheat/Double-Crop Soybean Rotation, D. W. Sweeney
Tillage And Nitrogen Placement Effects On Yields In A Short-Season Corn/Wheat/Double-Crop Soybean Rotation, D. W. Sweeney
Kansas Agricultural Experiment Station Research Reports
In 2013, late planting resulted in corn yields that were less than 100 bu/a. Nitrogen (N) placement did not affect yields in the higher-yielding conventional tillage system, but knifing tended to result in greater yield in reduced and no-till systems.
Long-Term Nitrogen And Phosphorus Fertilization Of Irrigated Grain Sorghum, A. Schlegel, H. D. Bond
Long-Term Nitrogen And Phosphorus Fertilization Of Irrigated Grain Sorghum, A. Schlegel, H. D. Bond
Kansas Agricultural Experiment Station Research Reports
Long-term research shows that phosphorus (P) and nitrogen (N) fertilizer must be applied to optimize production of irrigated grain sorghum in western Kansas. In 2014, N applied alone increased yields 49 bu/a, whereas N and P applied together increased yields up to 81 bu/a. Averaged across the past 10 years, N and P fertilization increased sorghum yields up to 73 bu/a. Application of 40 lb/a N (with P) was sufficient to produce more than 80% of maximum yield in 2014, which almost equals the 10-year average. Application of potassium (K) has had no effect on sorghum yield throughout the study …
Long-Term Nitrogen And Phosphorus Fertilization Of Irrigated Corn, A. Schlegel, H. D. Bond
Long-Term Nitrogen And Phosphorus Fertilization Of Irrigated Corn, A. Schlegel, H. D. Bond
Kansas Agricultural Experiment Station Research Reports
Long-term research shows that phosphorus (P) and nitrogen (N) fertilizer must be applied to optimize production of irrigated corn in western Kansas. In 2014, N applied alone increased yields 58 bu/a, whereas P applied alone increased yields only 12 bu/a. Nitrogen and P applied together increased yields up to 152 bu/a. This is slightly above the 10-year average, where N and P fertilization increased corn yields up to 146 bu/a. Application of 120 lb/a N (with P) produced about 91% of maximum yield in 2014, which was similar to the 10-year average. Application of 80 instead of 40 lb P2O5/a …
Corn Response To Foliar-Applied Zinc Fertilizers, A. Lamb, N. O. Nelson
Corn Response To Foliar-Applied Zinc Fertilizers, A. Lamb, N. O. Nelson
Kansas Agricultural Experiment Station Research Reports
This study was conducted to determine corn response to three foliar-applied zinc sources. The study was conducted on dryland corn in Manhattan, KS, during the 2014 growing season. Yields were low as a result of very low precipitation during pollination and grain fill. There was no yield response to foliar-applied Zn; however, grain analysis show significant increases in grain Zn concentration from foliar-applied Zn. Foliar-applied Zn products are effective for increasing Zn uptake in corn. Additional studies need to be conducted to determine the yield response.
Nitrogen, Phosphorus, And Potassium Fertilization For Newly Established Tall Fescue, D. W. Sweeney, J. L. Moyer
Nitrogen, Phosphorus, And Potassium Fertilization For Newly Established Tall Fescue, D. W. Sweeney, J. L. Moyer
Kansas Agricultural Experiment Station Research Reports
First-year production of tall fescue (Site 1 in 2013 and Site 2 in 2014) was affected by nitrogen (N) and phosphorus (P) but not potassium (K) fertilization. Environmental conditions likely influenced the growth of the fescue and the response to fertilizer N and P in the first year of production at the two sites.
Tillage And Nitrogen Placement Effects On Yields In A Short-Season Corn/Wheat/Double-Crop Soybean Rotation, D. W. Sweeney
Tillage And Nitrogen Placement Effects On Yields In A Short-Season Corn/Wheat/Double-Crop Soybean Rotation, D. W. Sweeney
Kansas Agricultural Experiment Station Research Reports
Overall in 2014, adding nitrogen (N) improved average wheat yields, but different N placement methods resulted in similar yields. Double-crop soybean yields were unaffected by tillage or the residual from N treatments that were applied to the previous wheat crop.
2014 Crop Performance In Southeast Kansas, G. F. Sassenrath, J. Lingenfelser, J. Mengarelli, K. Kusel
2014 Crop Performance In Southeast Kansas, G. F. Sassenrath, J. Lingenfelser, J. Mengarelli, K. Kusel
Kansas Agricultural Experiment Station Research Reports
Crop variety testing determines the production potential of newly released crop cultivars in Southeast Kansas. The genetic potential is moderated by environmental conditions during the growing season as well as soil productive capacity.
Soybean Production: Planting Date × Variety, Southeast Kansas, G. F. Sassenrath, I. A. Ciampitti, D. E. Shoup
Soybean Production: Planting Date × Variety, Southeast Kansas, G. F. Sassenrath, I. A. Ciampitti, D. E. Shoup
Kansas Agricultural Experiment Station Research Reports
Optimal soybean planting in southeast Kansas usually occurs from mid-May to mid- June for full-season or late June to early July for double-cropped soybean. Planting is timed to capture fall rains and cooler temperatures during critical periods of bean development and yield formation to avoid midsummer heat and drought.
Improving Yield Stability And Resiliency Of Agronomic Production Systems In Southeast Kansas, G. F. Sassenrath, J. K. Farney, Deann Presley, C. Davis
Improving Yield Stability And Resiliency Of Agronomic Production Systems In Southeast Kansas, G. F. Sassenrath, J. K. Farney, Deann Presley, C. Davis
Kansas Agricultural Experiment Station Research Reports
Soil health is a critical determinant of crop performance. Soil physical, chemical, and biological properties can be modified through production practices such as tillage. Use of cover crops has been shown to benefit soil health and may improve productive capacity of soils. High rainfall and intense crop production practices limit the ability to implement cover crops in current production systems in southeast Kansas. This study explores potential management of cover crops and their contribution to soil health, crop productivity, and animal grazing.
Seeded Bermudagrass Cultivar Evaluation, J. L. Moyer
Seeded Bermudagrass Cultivar Evaluation, J. L. Moyer
Kansas Agricultural Experiment Station Research Reports
A year after seeding, the stand of ‘F.K.#1’ appeared better than stands of 10 of the other 13 seeded entries. By fall, 2014, stands of ‘KF-13A,’ ‘KF-13B,’ and ‘SWI-800’ along with ‘F.K.#1’ were better than stands of four of the other seeded entries. Late-summer production was higher for KF-13A and ‘Midland 99,’ the sprigged check, than for five of the other entries.
Forage Production Of Sorghum Cultivars, J. L. Moyer
Forage Production Of Sorghum Cultivars, J. L. Moyer
Kansas Agricultural Experiment Station Research Reports
Total production from three cuttings of eight hay-type sorghum entries was greater from ‘Sweet Sioux WMR,’ ‘Cadan 99B,’ and ‘Trudan Headless’ than from ‘SDH 2942BMR’ and ‘AS6402.’ A separate test of 15 forage sorghums was conducted to assess dry matter (DM) production and other characteristics. Yields of ‘SPX-28313’ and ‘1990’ exceeded yields of 11 other entries. Production of ‘SPX3952,’ ‘AF7102,’ and ‘Atlas’ was less than that of six of the higher-yielding entries. Sorghum production tests were also conducted at Ottawa and Hutchinson (see KAES Research Reports, Vol. 1, Issue 2,Kansas Field Research).
Nitrogen Management For Teff Hay Production, D. H. Min, J. L. Moyer
Nitrogen Management For Teff Hay Production, D. H. Min, J. L. Moyer
Kansas Agricultural Experiment Station Research Reports
Fertilization of teff with nitrogen (N) resulted in increased forage production, but amounts above 25 lb/a did not often increase yields in this study. Urea as the N source produced at least as much yield response as the alternate, an extended source of nitrogen (ESN).
Weather Information For Tribune, H. D. Bond, R. Mai
Weather Information For Tribune, H. D. Bond, R. Mai
Kansas Agricultural Experiment Station Research Reports
Tribune, Kansas: In 2014, annual precipitation of 16.31 in. was recorded, which is 1.59 in. below normal. Seven months had below-normal precipitation. June (3.61 in.) was the wettest month. The largest single amount of precipitation was 1.54 in. on July 30.
Determining Profitable Annual Forage Rotations, J. D. Holman, T. Roberts, S. Maxwell
Determining Profitable Annual Forage Rotations, J. D. Holman, T. Roberts, S. Maxwell
Kansas Agricultural Experiment Station Research Reports
Producers are interested in growing forages, yet the southwest region of Kansas lacks proven recommended crop rotations such as those for grain crops. Forage production is important to the region’s livestock and dairy industries and is becoming increasingly important as irrigation well capacity declines. Forages require less water than grain crops and may allow for increased cropping intensity and opportunistic cropping. A study was initiated in 2013 comparing several 1-, 3-, and 4-year forage rotations with no-till and minimum-till (min-till). Data presented are from 2013 through 2014. Winter triticale yields were not affected by tillage in 2013 but were increased …
Large-Scale Dryland Cropping Systems, A. Schlegel
Large-Scale Dryland Cropping Systems, A. Schlegel
Kansas Agricultural Experiment Station Research Reports
A large-scale dryland cropping systems research and demonstration project at the Southwest Research-Extension Center near Tribune, Kansas, evaluated two summer crops (corn and grain sorghum) along with winter wheat in crop rotations varying in length from 1 to 4 years. The rotations were continuous grain sorghum, wheat-fallow, wheat-corn-fallow, wheat-sorghum-fallow, wheat-corn-sorghum-fallow, and wheatsorghum- corn-fallow. The objective of the study is to identify cropping systems that enhance and stabilize production in rain-fed locations to optimize economic crop production. Averaged across the past 7 years, wheat yields ranged from 22 to 25 bu/a and were not affected by length of rotation. Corn and …
Wheat Stubble Height On Subsequent Corn And Grain Sorghum Crops, A. Schlegel
Wheat Stubble Height On Subsequent Corn And Grain Sorghum Crops, A. Schlegel
Kansas Agricultural Experiment Station Research Reports
A field study initiated in 2006 was designed to evaluate the effects of three wheat stubble heights on subsequent grain yields of corn and grain sorghum. Corn yields in 2014 were similar to the long-term average, while sorghum yields were greater than the long-term average. Taller cut stubble in 2014 increased biomass production of corn and yield for grain sorghum. When averaged across 2007 through 2014, corn grain yields were 9 bu/a greater when planted into either tall or strip-cut stubble than into low-cut stubble. Average grain sorghum yields were not significantly affected by wheat stubble height. Water use efficiency …
Long-Term No-Till In A Wheat-Sorghum-Fallow Rotation, A. Schlegel, L. Stone
Long-Term No-Till In A Wheat-Sorghum-Fallow Rotation, A. Schlegel, L. Stone
Kansas Agricultural Experiment Station Research Reports
Grain yields of wheat and grain sorghum increased with decreased tillage intensity in a wheat-sorghum-fallow (WSF) rotation. In 2014, available soil water at wheat planting was 2 inches greater for no-till (NT) than for reduced-tillage (RT) or conventional tillage (CT). For grain sorghum in 2014, available soil water at planting was greatest with RT and least with CT. Averaged across the 14-year study, available soil water at wheat and sorghum planting was similar for RT and NT and about 1 inch greater than CT. Averaged across the past 14 years, NT wheat yields were 5 bu/a greater than RT and …
Teff Grass Response To Nitrogen Fertilization, J. D. Holman, D. H. Min, S. Maxwell
Teff Grass Response To Nitrogen Fertilization, J. D. Holman, D. H. Min, S. Maxwell
Kansas Agricultural Experiment Station Research Reports
Teff, a warm season annual grass native to Africa, is gaining popularity as a forage crop in the United States. Little information regarding nitrogen fertilization is available for teff grass production. This field experiment was conducted to evaluate teff grass response to varying nitrogen fertilization rates under dryland conditions. There was no yield response to increasing nitrogen rate or nitrogen source applied.
Efficacy Of Anthem, Anthem Atz, Solstice, Keystone Nxt, Corvus, And Surestart Ii In Glyphosate-Resistant Irrigated Corn, R. Currie, P. Geier
Efficacy Of Anthem, Anthem Atz, Solstice, Keystone Nxt, Corvus, And Surestart Ii In Glyphosate-Resistant Irrigated Corn, R. Currie, P. Geier
Kansas Agricultural Experiment Station Research Reports
The best treatments provided excellent green foxtail, crabgrass, or shattercane control. All treatments dramatically increased corn yield compared to the control.
Fallow Weed Control With Preemergence Tank Mixes Of Sharpen, Zidua, Sencor, Banvel, Atrazine, Balance Pro, And Corvus, R. Currie, P. Geier
Fallow Weed Control With Preemergence Tank Mixes Of Sharpen, Zidua, Sencor, Banvel, Atrazine, Balance Pro, And Corvus, R. Currie, P. Geier
Kansas Agricultural Experiment Station Research Reports
With the exception of the tank mix of Sharpen and Sencor, all other tank mixes that provided 100% kochia control 53 days after treatment (DAT) were three-way tank mixes of atrazine herbicide plus, Banvel, and Balance Pro or Zidua. Only two tank mixes provided 98% kochia control 143 DAT. These were also three-way tank mixes of these chemistries. Combinations of Balance Pro and Sencor were needed to provide greater than 93% control of Russian thistle 143 DAT. No tank mix provided good control of Palmer amaranth 143 DAT. However, tank mixes of Sharpen, Sencor, and Zidua provided 84% control 143 …