Life Sciences Commons^™

Effect Of Fungicides On Southern Rust Of Corn, E. A. Adee, S. Duncan

Kansas Agricultural Experiment Station Research Reports

The decision to apply fungicides to corn is not an easy decision in Kansas, especially when grain prices are low. Numerous factors determine what diseases are present, and whether the plants will be defoliated enough to reduce yield. Correctly identifying the disease, knowing what environmental conditions favor the development of an epidemic, and knowing the hybrid’s resistance to the diseases can be known before making the decision. However, knowing if the conditions will be favorable for the spread of the disease up the plant is very unpredictable. A situation like a ‘perfect storm’ for foliar diseases defoliating corn occurred in …

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

Kansas Agricultural Experiment Station Research Reports

Many crop rotation systems are used in southeastern Kansas. This experiment was designed to determine the long-term effect of selected tillage and N fertilizer placement options on yields of short-season corn, wheat, and double-crop soybean in a rotation.

Timing Of Side-Dress Applications Of Nitrogen For Corn In Conventional And No-Till Systems, D. W. Sweeney, D. E. Shoup, Dorivar Ruiz Diaz

Kansas Agricultural Experiment Station Research Reports

Environmental conditions vary widely in the spring in southeastern Kansas. As a result, much of the N applied prior to corn planting may be lost before the time of maximum plant N uptake. Side-dress or split applications to provide N during rapid growth periods may improve N use efficiency while reducing potential losses to the environment. The objective of this study was to determine the effect of timing of side-dress N fertilization compared with pre-plant N applications for corn grown on a claypan soil.

Crop Production Summary, Southeast Kansas – 2017, G. F. Sassenrath, L. Mengarelli, J. Lingenfelser, X. Lin, D. E. Shoup

Kansas Agricultural Experiment Station Research Reports

Crop production is dependent on many factors, most notably, environmental conditions during the growing season. Here, we summarize the environmental conditions during the 2017 growing season in comparison to previous years and the historical averages. Information on crop yields is taken from reported values and yields from variety trials in southeast and east central Kansas.

Evaluation Of The Effects Of High-Lysine Sorghum On Nursery Pig Performance, L. L. Thomas, R. D. Goodband, C. D. Espinosa, H. H. Stein, J. C. Woodworth, M. D. Tokach, S. S. Dritz, J. M. Derouchey

Kansas Agricultural Experiment Station Research Reports

Two experiments were conducted to determine the standardized ileal digestibility (SID) of amino acids in a high-lysine sorghum cultivar, followed by a growth trial to determine the effect of this sorghum on pig performance using increasing additions of feed-grade amino acids at the expense of soybean meal. In Exp. 1, ten growing barrows (initially 57.1 lb; Line 359 × 1050; PIC, Hendersonville, TN) were surgically fitted with a T-cannula at the terminal ileum and randomly assigned to 1 of 5 test diets in a 5-period, cross-over design. Experimental diets consisted of a corn-based diet, a diet containing high-lysine sorghum, or …

Effect Of Late Nitrogen Applications On Grain Filling In Corn, J. A. Fernandez, I. A. Ciampitti

Kansas Agricultural Experiment Station Research Reports

In order to evaluate the effect of nitrogen (N) with late-season fertilizer applications in corn, grain yield and grain filling parameters were evaluated for three genotypes under three N levels. Hybrids with different release years (3394, 1990s; P1151, 2000s; and P1197, 2016) and contrasting N application scenarios (zero-N, N at flowering, and N two weeks after flowering) were evaluated in two studies (dryland and irrigated) at the Ashland Bottoms Research Farm, Manhattan, KS, 2017 season. Results showed that under N stress conditions, the absence of N fertilization in corn significantly reduced yields, by affecting both grain number (GN) and grain …

Effects Of Increasing Oat Groats On Nursery Pig Performance, J. A. Chance, A. B. Lerner, J. M. Derouchey, J. C. Woodworth, M. D. Tokach, R. D. Goodband, S. S. Dritz

Kansas Agricultural Experiment Station Research Reports

In Exp. 1, a total of 225 pigs (241 × 600, DNA, Columbus, NE; initially 13.9 lb BW) were used in a 28-d study to evaluate the effects of increasing ground oat groats on nursery pig growth performance. Pigs were weaned at 21 d of age and randomly allotted to pens and fed a commercial starter diet for 7 d prior to the start of the experiment. Pens of pigs were assigned to 1 of 5 dietary treatments in a randomized complete block design by body weight (BW) with 4 or 5 pigs per pen and 10 pens per treatment. …

Tillage Study For Corn And Soybeans: Comparing Vertical, Deep, And No-Tillage, E. A. Adee

Kansas Agricultural Experiment Station Research Reports

Trends from a tillage study conducted since 2011 are beginning to show that corn yields are greater when there is an occasional deep tillage. The yield of soybeans have not been affected significantly by tillage systems ranging from no-till to conventional tillage every year.

Syngenta Enhanced Feed Corn (Enogen) Containing An Alpha Amylase Expression Trait Improves Feed Efficiency In Growing Calf Diets, M. A. Johnson, T. J. Spore, S. P. Montgomery, C. S. Weibert, J. S. Garzon, W. R. Hollenbeck, R. N. Wahl, E. D. Watson, Dale Blasi

Kansas Agricultural Experiment Station Research Reports

Objective: To determine the response of growing calves when fed Enogen Feed (Syngenta) corn, containing an alpha amylase expression trait.

Description: A total of 384 English crossbred steers having an average weight of 538 lb and originating from Texas were used to determine the effects on performance when fed Enogen Feed corn as either whole shelled or processed as dry-rolled at ad libitum intake.

The Bottom Line: When fed in an ad libitum fashion to growing calves, Enogen Feed corn improves feed efficiency of growing calves by 5.50%.

Effects Of Supplementation With Corn Or Dried Distillers Grains On Gains Of Heifer Calves Grazing Smooth Bromegrass Pastures, L. W. Lomas, J. L. Moyer

Kansas Agricultural Experiment Station Research Reports

Distillers grains, a by-product of the ethanol industry, have tremendous potential as an economical and nutritious supplement for grazing cattle. Distillers grains contain a high concentration of protein (25 to 30%), with more than two-thirds escaping degradation in the rumen, which makes it an excellent supplement for younger cattle. Recent advancements in the ethanol manufacturing process have resulted in extraction of a greater amount of fat; therefore, creating distillers grains that may contain less energy than corn. This research was conducted to compare performance of stocker cattle supplemented with corn or DDG at 0.5% body weight per head daily while …