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Fertilizer Placement And Tillage Interaction In Corn And Soybean Production, A. T. Rosa, D. A. Ruiz Diaz Jan 2015

Fertilizer Placement And Tillage Interaction In Corn And Soybean Production, A. T. Rosa, D. A. Ruiz Diaz

Kansas Agricultural Experiment Station Research Reports

Different tillage systems can affect the availability of phosphorus (P) by changing the soil environment. The objective of this study was to evaluate the effects and interaction of fertilizer placement, tillage, and varieties for soybean and corn. The experiment was established at two locations in Kansas in 2014. The experimental design was a factorial in a randomized complete block with four replications. Three fertilizer treatments were combined with two tillage systems and two varieties of soybean and corn selected based on contrasting root systems. Plant tissue samples were collected during the vegetative and reproductive stages to evaluate P concentration, P …


Forage Production Of Sorghum Cultivars, J. L. Moyer Jan 2015

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).


Soybean Sudden Death Syndrome Influenced By Macronutrient Fertility On Irrigated Soybean In A Corn/Soybean Rotation, E. A. Adee, D. Ruiz Diaz Jan 2015

Soybean Sudden Death Syndrome Influenced By Macronutrient Fertility On Irrigated Soybean In A Corn/Soybean Rotation, E. A. Adee, D. Ruiz Diaz

Kansas Agricultural Experiment Station Research Reports

The effects of nitrogen (N), phosphorus (P), and potassium (K) fertilization on a corn/ soybean cropping sequence were evaluated from 1983 to 2014, with corn planted in odd years. We observed a relationship between the P rate applied during the corn years and the severity of sudden death syndrome (SDS) in 2014 soybean.


Forage Sorghum Performance Trial, J. L. Moyer, E. A. Adee Jan 2015

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.’


Grain Sorghum Yield Response To Water Availability, J. P. Broeckelman, G. J. Kluitenberg, K. Roozeboom, I. A. Ciampitti Jan 2015

Grain Sorghum Yield Response To Water Availability, J. P. Broeckelman, G. J. Kluitenberg, K. Roozeboom, I. A. Ciampitti

Kansas Agricultural Experiment Station Research Reports

Yield effects of irrigation on sorghum and corn were compared, focusing only on the grain sorghum phase. Average water use for irrigation was 22 in., and dryland sorghum used 17 in. Average yields based on 12.5% grain moisture for dryland and irrigated sorghum were similar, with 138 bu/a for the irrigated and 142 bu/a for the dryland environment. Irrigated sorghum yields were similar, but in dryland, the Pioneer 84G62 hybrid yielded 149 bu/a, a 10 bu/a increase over Pioneer 84Y50 and DKS 53-67 hybrids, which yielded 139 bu/a and 138 bu/a, respectively. Although there was a difference in the yield …


Fallow Replacement Crop (Cover Crops, Annual Forages, And Short-Season Grain Crops) Effects On Available Soil Water, J. D. Holman, T. Roberts, S. Maxwell, I. Kisekka, A. Obour Jan 2015

Fallow Replacement Crop (Cover Crops, Annual Forages, And Short-Season Grain Crops) Effects On Available Soil Water, J. D. Holman, T. Roberts, S. Maxwell, I. Kisekka, A. Obour

Kansas Agricultural Experiment Station Research Reports

Producers are interested in growing cover crops and reducing fallow. Limited information is available on growing crops in place of fallow in the semiarid Great Plains. Between 2012 and 2015, spring cover, annual forage, and grain crops were grown in place of fallow in a no-till wheat-grain sorghum-fallow (WSF) rotation in southwest Kansas. Growing a cover, hay, or grain crop in place of fallow reduced the amount of stored soil moisture at wheat planting. On average, cover crops stored slightly more moisture than hay crops, but this soil moisture difference did not affect wheat yields. Soil moisture after grain crops …


Palmer Amaranth Control And Sorghum Response To Tank Mixtures Of Huskie, R. Currie, P. Geier Jan 2015

Palmer Amaranth Control And Sorghum Response To Tank Mixtures Of Huskie, R. Currie, P. Geier

Kansas Agricultural Experiment Station Research Reports

Although Huskie treatments caused significant chlorosis, the sorghum recovered fully and chlorosis did not affect yield. All tank mixes of Huskie provided good Palmer amaranth control at all rating dates. Starane NXT provided poor Palmer amaranth control at all rating dates. All tank mixes of Huskie significantly elevated yield compared to the untreated controls or Starane NXT treatments.


Sequential Treatments Of Rimsulfuron, Mesotrione, Thifensulfuron, Balance Flexx, Cinch, Cinch Atz, And Prowl H2o Mixtures For Weed Control In Irrigated Corn, R. Currie, P. Geier Jan 2015

Sequential Treatments Of Rimsulfuron, Mesotrione, Thifensulfuron, Balance Flexx, Cinch, Cinch Atz, And Prowl H2o Mixtures For Weed Control In Irrigated Corn, R. Currie, P. Geier

Kansas Agricultural Experiment Station Research Reports

No treatment with less than 1.5 lb/a atrazine provided commercially acceptable Palmer amaranth control. The best level of Palmer amaranth control was produced by treatments that had good preemergence control augmented by a postemergence application with two or more modes of action that contained 0.5 lb/a atrazine. All treatments provided excellent kochia control. The best Russian thistle treatments provided from 77 to 88% control. The best foxtail or crabgrass treatments provided from 91 to 94% control. Combinations of preemergence treatments followed by a postemergence treatment achieved excellent shattercane control.


Response Of Wheat To Residual Fertilizer Nitrogen Applied To Previously Failed Corn, D. W. Sweeney, D. Ruiz Diaz Jan 2015

Response Of Wheat To Residual Fertilizer Nitrogen Applied To Previously Failed Corn, D. W. Sweeney, D. Ruiz Diaz

Kansas Agricultural Experiment Station Research Reports

When drought conditions result in poor corn growth and yield, the potential exists for carryover of fertilizer nitrogen (N) to wheat. Soil sampling at the wheat jointing stage showed that NO3-N levels increased slightly as previous N rate increased up to 240 lb/a N, but did not appear sufficient for the wheat yield increase to previous N rate. The relationship between wheat normalized difference vegetative index (NDVI) measurements at jointing and wheat yield was linear. The use of crop active sensors such as the GreenSeeker (Trimble Navigation Ltd., Sunnyvale, CA) may provide plant response data to supplement soil …


Tillage And Nitrogen Placement Effects On Yields In A Short-Season Corn/Wheat/Double-Crop Soybean Rotation, D. W. Sweeney Jan 2015

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 Jan 2015

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 Jan 2015

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 …


Nitrogen, Phosphorus, And Potassium Fertilization For Newly Established Tall Fescue, D. W. Sweeney, J. L. Moyer Jan 2015

Nitrogen, Phosphorus, And Potassium Fertilization For Newly Established Tall Fescue, D. W. Sweeney, J. L. Moyer

Kansas Agricultural Experiment Station Research Reports

First-year spring yields of tall fescue in 2013 responded to phosphorus (P) fertilization, but lodging at the R5 growth stage in the spring with higher P fertilization rates may have influenced subsequent fall harvest yields, which declined with increasing P rates. As N rates increased, R5 yields declined but fall harvest yields increased.


Nitrogen And Sulfur Fertilization Effects On Camelina Sativa In West Central Kansas, E. Obeng, A. Obour Jan 2015

Nitrogen And Sulfur Fertilization Effects On Camelina Sativa In West Central Kansas, E. Obeng, A. Obour

Kansas Agricultural Experiment Station Research Reports

Camelina sativais early maturing and possesses characteristics that make it a good fit as a rotation crop in dryland wheat cropping systems. Nitrogen (N) and sulfur (S) play very important roles in oilseed production, including camelina. This study was undertaken in 2013 and 2014 to determine N and S rates necessary for optimum camelina production in West Central Kansas. The experiment was set up as randomized complete blocks with four replications in a split-plot arrangement. Treatments were two S rates (0 and 18 lb/a) as the main plots, and N rates (0, 20, 40, and 80 lb/a) were the …


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.


Evaluating The Effectiveness Of Iron Chelates In Managing Iron Deficiency Chlorosis In Grain Sorghum, A. Obour, R. Perumal Jan 2015

Evaluating The Effectiveness Of Iron Chelates In Managing Iron Deficiency Chlorosis In Grain Sorghum, A. Obour, R. Perumal

Kansas Agricultural Experiment Station Research Reports

Grain sorghum production in alkaline or calcareous soils is frequently affected by iron (Fe) chlorosis. Soil conditions such as high pH, high free calcium carbonate (lime), and low organic matter favor development of iron deficiency chlorosis (IDC), which can delay crop maturity and reduce yields. Two field experiments were conducted in the summer of 2014 to determine the effectiveness of Fe chelate application in alleviating IDC in grain sorghum. Treatments in the first study were four Fe chelate application rates (0, 3, 6, and 9 lb/a) applied either in-furrow with the seed at the time of planting or 2 weeks …


Corn Response To Foliar-Applied Zinc Fertilizers, A. Lamb, N. O. Nelson Jan 2015

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.


Evaluation Of Secondary And Micronutrients For Soybean Production In Kansas, M. N. Gutierrez, D. A. Ruiz Diaz Jan 2015

Evaluation Of Secondary And Micronutrients For Soybean Production In Kansas, M. N. Gutierrez, D. A. Ruiz Diaz

Kansas Agricultural Experiment Station Research Reports

Study of secondary and micronutrients is growing because of their potential contribution to yield increases. The objective of this study was to evaluate soybean response to secondary and micronutrient fertilizer application to maximize yields. A randomized complete block design was employed with four replications at five locations during 2013 and five locations in 2014. Treatments consisted of an unfertilized control; micronutrient fertilizer as individual nutrients for boron, copper, manganese, sulfur, and zinc; and a mix of these nutrients using two different placements (dry broadcast and liquid band). Soil samples were collected prior to planting and after harvest. Soybean trifoliates were …


Response Of Soybean Grown On A Claypan Soil In Southeastern Kansas To The Residual Of Different Plant Nutrient Sources And Tillage, D. W. Sweeney, P. Barnes, G. Pierzynski Jan 2015

Response Of Soybean Grown On A Claypan Soil In Southeastern Kansas To The Residual Of Different Plant Nutrient Sources And Tillage, D. W. Sweeney, P. Barnes, G. Pierzynski

Kansas Agricultural Experiment Station Research Reports

The residual effects of turkey litter and fertilizer amendments applied in previous years had little effect on the yield, yield components, and dry matter production of the following soybean crop grown in 2014.


Tillage And Nitrogen Placement Effects On Yields In A Short-Season Corn/Wheat/Double-Crop Soybean Rotation, D. W. Sweeney Jan 2015

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 Jan 2015

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.


Nitrogen, Phosphorus, And Potassium Fertilization For Newly Established Tall Fescue, D. W. Sweeney, J. L. Moyer Jan 2015

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.


Identification Of Yield-Limiting Factors In Southeast Kansas Cropping Systems, G. F. Sassenrath, X. Lin, D. E. Shoup Jan 2015

Identification Of Yield-Limiting Factors In Southeast Kansas Cropping Systems, G. F. Sassenrath, X. Lin, D. E. Shoup

Kansas Agricultural Experiment Station Research Reports

Crop performance and yield within production fields varies as a function of growing environment and soil properties within the field. Components contributing to yield in corn, wheat, and soybean production were examined through on-farm measurements of soil properties in southeast Kansas. Additional tests in research plots explored components contributing to yield in greater detail. Environmental variability between the 2013 and 2014 growing seasons contributed to differences in yield. Additional variability in soil parameters influenced crop performance, particularly for soils high in clay content.


Soybean Production: Planting Date × Variety, Southeast Kansas, G. F. Sassenrath, I. A. Ciampitti, D. E. Shoup Jan 2015

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 Jan 2015

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.


Evaluating Multispecies Cover Crops For Forage Production, C. Davis, D. Presley, J. K. Farney, G. F. Sassenrath Jan 2015

Evaluating Multispecies Cover Crops For Forage Production, C. Davis, D. Presley, J. K. Farney, G. F. Sassenrath

Kansas Agricultural Experiment Station Research Reports

Cover crops offer potential benefits for improving soil health, but establishment and management costs can be expensive. One way for farmers to recover these costs is to graze the forage, which benefits producers by integrating crop and animal production. More information is needed on the potential forage quantity and quality for grazing livestock of cover crops and mixed species of cover crops. Researchers have suggested that different plant species complement each other, but additional work is needed to determine how best to balance forage production and how competitive the various species are when added to a mix. Sixteen treatments were …


Evaluation Of Tall Fescue Cultivars, J. L. Moyer Jan 2015

Evaluation Of Tall Fescue Cultivars, J. L. Moyer

Kansas Agricultural Experiment Station Research Reports

Stand frequency in spring 2014 was higher for ‘AU Triumph’ than for ‘AGRFA-111’ and ‘BarOptima Plus E34.’ Spring 2014 yield was higher for ‘Jesup MaxQ’ and ‘Texoma MaxQ II’ than for 10 of the 17 other entries. Fall production was greater for ‘AGRFA- 111’ and ‘Bar FA80 DH’ than for 13 other entries. Total 2014 production was higher for ‘Texoma MaxQ II’ than for five other cultivars. Total 4-year forage production was greater for ‘Texoma MaxQ II’ and ‘Martin 2 647’ than for the seven below-average entries. ‘Bariane’ and ‘AGRFA-179’ were lower than for six of the highest-yielding entries.


Seeded Bermudagrass Cultivar Evaluation, J. L. Moyer Jan 2015

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.


Adaptability Of Miscanthus Cultivars For Biomass Production, J. L. Moyer Jan 2015

Adaptability Of Miscanthus Cultivars For Biomass Production, J. L. Moyer

Kansas Agricultural Experiment Station Research Reports

In 2014, miscanthus dry matter (DM) did not differ between cultivars, averaging 10,970 lb/a. Total two-year production totaled 15,920 lb DM/a.


Nitrogen Management For Teff Hay Production, D. H. Min, J. L. Moyer Jan 2015

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).