Life Sciences Commons^™

The Effect Of Preflood Nitrogen And Flood Establishment Timing On Rice Development, Nitrogen Uptake And Grain Yield, Tyler Richmond

Graduate Theses and Dissertations

Urea-N fertilizer is typically applied at the 5-leaf stage to rice (Oryza sativa L.) grown in a dry-seeded, delayed-flood production system. How long the preflood-N can be delayed without adverse effects on yield potential is poorly understood. The research objective was to determine the effects of preflood-N application and flood establishment timing on aboveground-N content, 50% heading, yield components, and grain yield. Trials were established on silt loam soils at the Pine Tree Research Station (PTRS) and Rice Research and Extension Center (RREC) during 2015 and 2016. Urea-N was applied at 0, 45, 90, 135, and 180 kg N ha-1 …

Cultivar, Season Extension, Fertilizer Trials Of Swiss Chard And Pedagogy Of Assessing Cultivars Using Technology, Chanelle Angeny

Electronic Theses and Dissertations

Abstract. Diversity of species is a cornerstone of horticulture, and the constant stream of new plant cultivars broadens the palette of options available to the industry. Fifteen Swiss chard (Beta vulgaris var. cicla) cultivars were evaluated during the fall/winter of 2014-2015 season (season 1) and 27 cultivars during the fall/winter of 2015-2016 season (season 2) to determine the best performing cultivars for production and landscape use for east Texas and the southeast by assessing survivability and yield. There was an increase in production of 3.0 ± 0.5 g per plant per harvest under the low tunnel. The cultivar …

Genetic Analysis Of Nitrate Transporter 2 Family In Brachypodium Distachyon, With An Essential Role Of Bdnrt2.1 To Nitrogen Use Efficiency, Jiang Wang

Electronic Thesis and Dissertation Repository

Plant agricultural productivity relies heavily on nitrogenous fertilizers. Excess N fertilizer application can often lead to lower nitrogen use efficiency (NUE) along with energy waste and environmental problems. Therefore, understanding and improving NUE in plants are of key importance. The small monocot plant Brachypodium distachyon (Brachypodium) is rapidly emerging as a powerful model system to study questions unique to monocot crops (wheat, maize, rice, etc.).

Here, through an intensive BLAST search, six putative orthologues of the Arabidopsis NRT2 gene family were identified in the fully sequenced Brachypodium genome (Phytozome v11.0), among which I isolated a T-DNA mutant ( …

Effect Of Organic, Inorganic Fertilizers And Plant Spacing On The Growth And Yield Of Cabbage, Md Ashraful Islam, Golam Ferdous, Ayasha Akter, Md Mokter Hossain, Dilip Nandwani

Agricultural and Environmental Sciences Faculty Research

The impact of chemical farming and the negative consequences on the environment and human health in Bangladesh are on the rise. Organic farming is gaining attention and increasing globally because it is eco-friendly, safe and has benefits for human health. A field study was conducted at the horticulture farm of Bangladesh Agricultural University (BAU), Mymensingh, to evaluate the growth and yield performance of cabbage cv. Atlas—70 using organic and inorganic fertilizers in various plant spacing arrangements. Two factor experiments were conducted on plant spacings of 60 cm × 40 cm (S1), 60 cm × 50 cm (S2) and 60 cm …

Chemical Interruption Of Late Season Flowering To Improve Harvested Peanut Maturity, Marshall C. Lamb, Ronald B. Sorensen, Christopher L. Butts, Phat M. Dang, C. Y. Chen, Renée S. Arias

United States Department of Agriculture-Agricultural Research Service / University of Nebraska-Lincoln: Faculty Publications

Peanut (Arachis hypogaea) is a botanically indeterminate plant where flowering, fruit initiation, and pod maturity occurs over an extended time period during the growing season. As a result, the maturity and size of individual peanut pods vary considerably at harvest. Immature kernels that meet commercial edible size specifications negatively affect quality during processing due to their increased propensity for off flavors, higher moisture and water activity, and variable roasting properties. As peanuts progress toward maturation, late season flowers set within 40 days till harvest will not have sufficient time to develop into mature, marketable pods prior to harvest. …

Estimating Annual Forage Yields With Plant Available Water And Growing Season Precipitation, J. D. Holman, A. Obour, I. Kisekka, A. Schlegel, T. Roberts, S. Maxwell

Kansas Agricultural Experiment Station Research Reports

Forage production is important for western Kansas region’s livestock and dairy industries and has become increasingly important as irrigation-well capacity declines. Forages require less water than grain crops and may allow for increased cropping intensity and opportunistic cropping. Being able to estimate forage production is important for determining forage availability versus forage needs. Data from several studies were used to quantify annual forage yield response to plant available water (PAW) at planting and growing season precipitation (GSP). In addition, water use efficiency was quantified. Forages evaluated included winter triticale, spring triticale, and forage sorghum.

Seed Yield And Biological Nitrogen Fixation For Historical Soybean Genotypes, S. Tamagno, I. A. Ciampitti

Kansas Agricultural Experiment Station Research Reports

Seed yield formation and biological nitrogen (N) fixation (BNF) were evaluated during the seed filling period (SFP) for historical soybean genotypes under contrasting N strategies. Overall, seed yield increased with the year of release, primarily associated with increments in the seed number component. The study showed that seed weight factor was maintained across decades regardless of the improvement in seed number. Nitrogen factor, evaluated as zero-N application via inorganic fertilizers versus high-N added, influenced seed yield via impacting seed weight factor. The latter plant trait improved with the high-N treatment, which was related to changes in the duration of the …