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Pyritic Lignite As A Source Of Iron For Soybean As Influenced By Variety And Soil Ph., Andrea Paola Elvir Flores
Pyritic Lignite As A Source Of Iron For Soybean As Influenced By Variety And Soil Ph., Andrea Paola Elvir Flores
Theses and Dissertations
Iron deficiency chlorosis (IDC) is a frequent problem in soybean [Glycine max (L.) Merr.] production on calcareous soils. Greenhouse and soil incubation experiments were established to evaluate pyritic lignite efficacy to supply Fe as compared to Fe-EDDHA and Fe-EDTA sources across contrasting IDC tolerance varieties grown on a slightly acid and a calcareous soil. Soybean IDC incidence was influenced by the soil properties and variety tolerance. All iron sources increased plant dry matter accumulation on the Leeper soil, whereas on the Marietta soil only lignite at 0.672 kg ha-1 produced an increase. Lignite at 0.336 kg ha-1 successfully improved Fe …
Effects Of Cover Crop Management On Biologically Related Soil Properties In A Mississippi Dryland Soybean System, Sapana Pokhrel
Effects Of Cover Crop Management On Biologically Related Soil Properties In A Mississippi Dryland Soybean System, Sapana Pokhrel
Theses and Dissertations
Soil microorganisms are important for the stabilization and preservation of a good soil structure. Management practices can affect the diversity and population of microorganisms, which could beneficially change soil properties and promote a more sustainable dryland system. This study was established near Pontotoc, MS on Atwood silt loam to evaluate the impacts of cover crops and fertilizer sources on selected biologically related soil properties in a no-tillage, dryland soybean system. Soil analyses included total carbon and nitrogen, permanganate oxidizable carbon (POXC), easily extractable glomalin-related soil protein (EE-GRSP), water stable aggregate (WSA) and soil pH. Cover crop biomass and percent groundcover, …
Evaluation Of Economics And Management In Mid-South Soybean Production, Richard Turner
Evaluation Of Economics And Management In Mid-South Soybean Production, Richard Turner
Theses and Dissertations
Two studies were conducted from 2017 – 2019 at Stoneville, MS the first was to determine optimum seeding rates on single and twin row configuration during both late and early planting dates. The second study was to compare two row configurations with two planting populations (whole plot) but add management strategies (subplots) within each whole plot. From this data, yield optimization could be reached within each system that likely encompasses everything a producer in the Mississippi Delta could encounter during a growing season. Soybean seed from this data was analyzed for protein, oil, and fatty acid composition to determine which …
Refinement And Validation Of Soybean Looper (Chrysodeixis Includens) (Walker) Thresholds In Mississippi Soybeans (Glycine Max (L.) Merr.), Mary Huff
Theses and Dissertations
Experiments were conducted to refine and validate the soybean looper, Chrysodeixis includens (Walker) threshold in Mississippi soybeans, Glycine max. (L.) Merr. Equivalencies between sweep net and drop cloth sampling methods were evaluated, overall the sweep net was more effective at capturing soybean looper larvae greater than third instar and larvae less than or equal to third instar when compared to the drop cloth method. Feeding studies were conducted to determine the feeding rates of each instar, results showed that fifth instar larvae consume the greatest amount of leaf tissue, and larvae greater than or equal to third instar consume more …