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" Cover Crop, Seed Priming and Planting Date Effects on Direct Seeded Pepper Emergence in Oklahoma "
Nichols, Andrea
Brandenberger, Lynn
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Latin Dissertation
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| Language of Document
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English
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| Record Number
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1106734
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| Doc. No
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TLpq2410732389
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| Main Entry
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Brandenberger, Lynn
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Nichols, Andrea
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| Title & Author
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Cover Crop, Seed Priming and Planting Date Effects on Direct Seeded Pepper Emergence in Oklahoma\ Nichols, AndreaBrandenberger, Lynn
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| College
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Oklahoma State University
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| Date
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2019
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| student score
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2019
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| Degree
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M.S.
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| Page No
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41
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| Abstract
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The purpose of this research is to identify and implement more efficient ways to produce bell (Capsicum annuum) and spice peppers by eliminating transplant costs via direct seeding planting methods with the addition of various planting dates, seed priming, and cover crops. Seed priming trials were first performed in the greenhouse to determine the most suitable priming agent for bell and spice peppers. California Wonder bell pepper seeds and Okala spice pepper seeds were soaked for 36 hours in a 10 mM concentration of three treatments: Potassium chloride(KCL), calcium chloride (CaCl2), and deionized water. Control seeds were rinsed in a 1% bleach solution prior to planting. All seeds were weighed before soaking and dried to their original weight before planting. Based on the results, KCL and CaCl2 were chosen for spice and bell peppers, respectively. The priming agents along with two planting dates based on soil temperatures were used for field trials. Plots were also planted within four different cover crop treatment areas that have been in rotation for two years. Treatment 1 area consists of sorghum Sudan (Sorghum biocolor L.) and cowpea (Vigna unguiculata) for warm season crops and cereal rye (Secale cereale) and crimson clover (Trifolium incarnatum) for cold season crops. Treatment 2 area consists of cowpea for warm season crops and winter wheat (Triticum aestivum L.) and crimson clover for cold season crops. Treatment 3 area consists of pearl millet (Pennisetum glaucum) and cowpea for warm season crops and cereal rye, Austrian winter pea (Pisum sativum subs arvense) and tillage radish (Raphanus sativus var. longipinnatus) for cool season crops and treatment 4 is fallow year round. Seeds were sown in strip tilled plots using a research planter. Each plot is 12 feet in length with 50 seeds per plot, planted at 0.5" depth. Data was collected every four days on emergence rate for two weeks. Results showed significance for primed seeds versus control seeds but varied between cover crops. Results indicate that cover crop selection, planting date and priming agents may have a positive effect on the emergence of direct seeded peppers in Oklahoma.
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Horticulture
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