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Full-Text Articles in Life Sciences

Agricultural Practices For Growing Kenaf (Hibiscus Cannabinus L.) In Iowa: Ii. Fiber Composition And Quality, Marie Bourguignon, Kenneth J. Moore, Andrew W. Lenssen, Brian S. Baldwin Dec 2019

Agricultural Practices For Growing Kenaf (Hibiscus Cannabinus L.) In Iowa: Ii. Fiber Composition And Quality, Marie Bourguignon, Kenneth J. Moore, Andrew W. Lenssen, Brian S. Baldwin

Agronomy Publications

The demand for natural fibers is increasing worldwide as markets respond to the need to replace non-renewable sources. Kenaf (Hibiscus cannabinus L.) is a promising biorenewable resource for producing natural fibers. Few studies have investigated the crop when grown at latitudes above 40° and in the Midwest. The objectives of this study were to assess the influence of management practices on fiber (bast and core lignocellulose) composition, carbon (C), nitrogen (N), and total ash concentration. Cultivars ‘Tainung 2’ and ‘Whitten’ were planted in Boone County, IA in 2014 and 2015 at 247,000 or 371,000 seed ha-1, in 38-cm ...


Agricultural Practices For Growing Kenaf (Hibiscus Cannabinus L.) In Iowa: I. Morphology, Stem, And Fiber Yield, Marie Bourguignon, Kenneth J. Moore, Andrew W. Lenssen, Brian S. Baldwin Dec 2018

Agricultural Practices For Growing Kenaf (Hibiscus Cannabinus L.) In Iowa: I. Morphology, Stem, And Fiber Yield, Marie Bourguignon, Kenneth J. Moore, Andrew W. Lenssen, Brian S. Baldwin

Agronomy Publications

Kenaf (Hibiscus cannabinus L.) is a promising biorenewable resource for producing natural fibers but few studies have investigated the crop when grown in cooler climates, such as the American Midwest. The objectives of this study were to: 1) determine the agricultural practices (row spacing, seed, and N rates) leading to optimal kenaf dry matter (DM) stem and fiber yield in ‘Tainung 2’ and ‘Whitten’; 2) evaluate stem height, basal diameter, and leaf area index (LAI) over the growing season; and 3) assess the influence of management practices on fiber (bast and core lignocellulose) composition, and carbon (C), N, and total ...


Insecticidal Seed And In-Furrow Treatment Recommendations For Soybean And Sunflower, Brady Hauswedell Jan 2018

Insecticidal Seed And In-Furrow Treatment Recommendations For Soybean And Sunflower, Brady Hauswedell

Electronic Theses and Dissertations

Throughout the 2016 and 2017 growing season, field research experiments were replicated across South Dakota. Many times seed treatments are used prophylactic, which is neither good for the producers or the environment. Producers will be able to reduce production costs, if they only use a seed treatment when necessary. The purpose of the first experiment was to determine the effects of seed treatments in combination with planting date and seeding rate on soybean yield. To determine the effects, two years of field data from four eastern South Dakota locations were compared. Within each year and location we compared two planting ...


Influence Of Corn Seeding Rate, Soil Attributes, And Topographic Characteristics On Grain Yield, Yield Components, And Grain Composition, Mark Allen Licht Jan 2015

Influence Of Corn Seeding Rate, Soil Attributes, And Topographic Characteristics On Grain Yield, Yield Components, And Grain Composition, Mark Allen Licht

Graduate Theses and Dissertations

Adoption of variable seeding rates has increased dramatically in recent years due to ability and feasibility of determining soil and topographic variability within fields. This research explores soil and topographic attribute interactions with seeding rate and the effect they have on corn yield, yield components, and grain composition. Experimental treatments included five seeding rates (61,750; 74,100; 86,450; 98,800; and 111,150 seeds ha-1) in a randomized complete block design in three central Iowa fields from 2012 to 2014. Soil samples were analyzed for available P, exchangeable K, pH, soil organic matter, cation exchange capacity, and texture ...


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.


G00-1395 Soybean Seeding Rates, Roger Wesley Elmore, James E. Specht Jan 2000

G00-1395 Soybean Seeding Rates, Roger Wesley Elmore, James E. Specht

Historical Materials from University of Nebraska-Lincoln Extension

The soybean stand looked horrible late that May. The field had a good seed bed at planting, but rain after planting crusted the soil over the seed furrows. Rain was in the short-term forecast. All other row crops were planted and looked fine, but this field concerned the producer. Should the producer replant? Recommended soybean seeding rates, stand assessment and replanting rates based on Nebraska field research are addressed in this NebGuide.


G99-1395 Soybean Seeding Rates, Roger Wesley Elmore, James E. Specht Jan 1999

G99-1395 Soybean Seeding Rates, Roger Wesley Elmore, James E. Specht

Historical Materials from University of Nebraska-Lincoln Extension

Recommended soybean seeding rates, stand assessment and replanting rates based on Nebraska field research are addressed in this NebGuide. The soybean stand looked horrible late that May. The field had a good seed bed at planting, but rain after planting crusted the soil over the seed furrows. Rain was in the short-term forecast. All other row crops were planted and looked fine, but this field concerned the producer.