Horticulture Commons^™

Legacy Effects Of Biodegradable Mulch And Soil Amendments On Vegetable Crops And The Soil, Elise V. H. Reid

Department of Agronomy and Horticulture: Dissertations, Theses, and Student Research

Plastic film mulches are used in horticulture to manage weeds, improve water retention, and increase soil temperature. Bioplastics and biofabrics are potentially sustainable alternatives to plastic film; however, they have different rates of in soil degradation. Polylactic acid (PLA) is a 100% biobased polymer that degrades slowly, but could fulfill organic certification to be soil incorporated. Mater-Bi is a commercially available biodegradable plastic (bioplastic), which degrades quickly, but cannot be incorporated in organic systems. Our objectives were to determine the individual and combined effects of soil amendments and residual mulch on vegetable crop yield and soil fertility. In a two-year …

Evaluation Of Phytochemical Composition And Anti-Cancer Potential In Root Extracts Of Moringa Peregrina (Forssk.) Fiori, Salama Khamis Sultan Saeed Al Kaabi

Theses

Natural products provide many bioactive lead molecules for the discovery of new medicines. Naturally, derived phytochemicals have exhibited tremendous biological activities including anticancer activity. More than 60% of antitumor medicines are closely associated with natural products. In the present study, hexane, chloroform, acetone and, methanol extracts from roots of Moringa peregrina were screened for phytochemical analysis and anticancer activity. Phytochemical analysis was performed by Gas Chromatography and Mass spectrometry (GC-MS). The anticancer potential of the extracts was done on the human breast cancer cell line (MCF-7) and cell viability was measured using WST-1 Cell Proliferation Assay Kit. The cell line …

Ghd8 Controls Rice Photoperiod Sensitivity By Forming A Complex That Interacts With Ghd7, Peng Wang, Rong Gong, Ying Yang, Sibin Yu

Department of Agronomy and Horticulture: Faculty Publications

Background: Flowering time is one of the most important agronomic characteristics that ultimately determine yield potential and eco-geographical adaptation in crops. Ghd8 and Ghd7, two major flowering genes, have similar functions and large pleiotropic effects in controlling the heading date, plant height and grain yield of rice. However, these gene interactions at the genetic and molecular levels have not been determined to date.

Results: In this study, we investigated the genetic interaction between Ghd8 and Ghd7 by using a set of near-isogenic lines and a panel of natural germplasm accessions in rice. We found that Ghd8 affected multiple agronomic traits …

Supersweet Sweet Corn Cultivar Evaluation For Northern Indiana, 2019, Elizabeth Maynard

Midwest Vegetable Trial Reports

This paper reports on fifteen bicolor, four yellow, and one white supersweet sweet corn entries that were evaluated at the Pinney Purdue Agricultural Center in Wanatah, Indiana.

Application Of Autofluorescence For Confocal Microscopy To Aid In Archaeoparasitological Analyses, Johnica Jo Morrow, Christian Elowsky

Department of Agronomy and Horticulture: Faculty Publications

Confocal laser scanning microscopy (CLSM) was used to examine archaeoparasitological specimens from coprolites associated with La Cueva de los Muertos Chiquitos (CMC) located near present-day Durango, Mexico. The eggs for 4 different types of parasites recovered from CMC coprolites were imaged using CLSM to assist with identification efforts. While some of the parasite eggs recovered from CMC coprolites were readily identified using standard light microscopy (LM), CLSM provided useful data for more challenging identifications by highlighting subtle morphological features and enhancing visualization of parasite egg anatomy. While other advanced microscopy techniques, such as scanning electron microscopy (SEM), may also detect …

Herbicide, Douglas D. Archbold, Marta Nosarzewski

Horticulture Faculty Patents

Provided herein are SDH substrates that have use as herbicides in treating pre-emergent and post-emergent weed control. The presently-disclosed subject matter includes an herbicide including SDH substrates such as ribitol and a growth inhibitive effective amount of another adjuvant SDH substrate and/or adjuvant. Methods of treating pre-emergent and post-emergent weeds comprising applying the herbicides disclosed herein in an effective amount to suppress weed growth are also provided.

Container Size And Shade Duration Affect Growth Of Flowering Dogwood, Anthony L. Witcher, Fulya Baysal-Gurel, Eugene K. Blythe, Donna C. Fare

Agricultural and Environmental Sciences Faculty Research

Flowering dogwood (Cornus florida) is a valuable nursery product typically produced as a field-grown crop. Container-grown flowering dogwood can grow much faster than field-grown plants, thus shortening the production cycle, yet unacceptable crop loss and reduced quality continue to be major issues with container-grown plants. The objective of this research was to evaluate the effects of container size and shade duration on growth of flowering dogwood cultivars Cherokee Brave™ and Cherokee Princess from bare-root liners. In 2015, bare-root liners were transplanted to 23-L (no. 7) containers and placed under shade for 0 months (full sun), 2 months (sun4/shade2), …

Nebline, October 2019

NEBLINE Newsletter Archive from Nebraska Extension in Lancaster County

Groundwater Protection: It’s Up to Everyone

The Nutritional Power of Pumpkins

Recipe of the Month

Sulfur Deficiency in Corn

Planting Garlic in the Fall Vegetable Garden

Composting Demonstrations

I Spy a Spider: Common Spiders Around the Home

Invasive Species: American Bullfrog

Plant Spring Bulbs for Pollinators

Garden Guide: Things to Do This Month

Become a Master Gardener

Chatting With Babies Helps Brain Development

Heart of 4-H Volunteer Award: Kelsey Ebke

4-H Golf Tournament Fundraiser, Sept. 29

4-H Specialty Clubs Invite New Members

4-H Announcements for 4-H'ers and Volunteers

State Fair 4-H Top Results

Lancaster County 4-H Quilt of Valor Presented …

Canavalia And Dolichos Extracts For Sustainable Pest Biocontrol And Plant Nutrition Improvement In El Salvador, Carlos Martinez

Department of Agronomy and Horticulture: Dissertations, Theses, and Student Research

Botanical repellents and pesticides are now being rediscovered as new tools for integrated pest management in order to reduce the use of toxic chemicals in crop production. Canavalia gladiata and Dolichos lablab are two Fabaceae very well adapted to farmlands of El Salvador, effective as living barriers and mostly as cover crops, however, they are not yet very well disseminated. This document describes the potential for using the liquid extracts and the dry flour of raw seeds of those plants for economic benefit and practical convenience for pest management in Salvadorian agriculture under field conditions. Seed extracts were useful when …

Arkansas Corn And Grain Sorghum Performance Tests 2019, J. F. Carlin, R. D. Bond, J. A. Still

Arkansas Agricultural Experiment Station Research Series

Corn and grain sorghum performance tests are conducted each year in Arkansas by the University of Arkansas System Division of Agriculture. The tests provide information to companies marketing seed within the state and aid the Arkansas Cooperative Extension Service in formulating recommendations for producers. The 2019 corn performance tests contained 74 hybrids and were conducted at the Northeast Research and Extension Center (NEREC) at Keiser, the Lon Mann Cotton Research Station (LMCRS) near Marianna, the Bell Farming Company near Des Arc, the Rohwer Research Station (RRS) near Rohwer and the Rice Research and Extension Center (RREC) near Stuttgart. The 2019 …

Nexus Between Spermidine And Floral Organ Identity And Fruit/Seed Set In Tomato, Savithri U. Nambeesan, Autar K. Mattoo, Avtar K. Handa

Purdue University Libraries Open Access Publishing Fund

Polyamines (PAs) constituting putrescine (Put), spermidine (Spd), and spermine (Spm) are ubiquitous in all organisms and play essential roles in the growth and developmental processes in living organisms, including plants. Evidences obtained through genetic, biochemical, and transgenic approaches suggest a tight homeostasis for cellular PA levels. Altered cellular PA homeostasis is associated with abnormal phenotypes. However, the mechanisms involved for these abnormalities are not yet fully understood, nor is it known whether cellular ratios of different polyamines play any role(s) in specific plant processes. We expressed a yeast spermidine synthase gene (ySpdSyn) under a constitutive promoter CaMV35S in tomato and …

Nebline, September 2019

NEBLINE Newsletter Archive from Nebraska Extension in Lancaster County

Read for Resilience Program Helps Young Children Cope After a Disaster

Breakfast — Don’t Leave Home Without It!

Recipe of the Month

Grazing Calves on Annual Forages

Sheet Composting Requires No Turning

Composting Demonstrations

Prepared, Not Scared. Be Ready for Disasters

Plant Asters for Fall Color

Garden Guide: Things to Do This Month

The Lowdown on Lyme Disease

Heart of 4-H Volunteer Award: Brenda Nepper

4-H Teen Council Invites New Members

Support 4-H by Dining at Chipotle on O Street, Sept. 16

New Horticulture 4-H Club Meeting, Sept. 19

4-H Golf Tournament Fundraiser, Sept. 29

Interested in Joining 4-H? Come …

Arkansas Wheat Cultivar Performance Tests 2018-2019, R. E. Mason, R. G. Miller, D. E. Moon, J. P. Kelley

Arkansas Agricultural Experiment Station Research Series

Wheat cultivar performance tests are conducted each year in Ark- ansas by the University of Arkansas System Division of Agriculture’s Arkansas Agricultural Experiment Station, Department of Crop, Soil and Environmental Sciences. The tests provide information to companies developing cultivars and marketing seed within the state and aid the Arkansas Cooperative Extension Service in formulating cultivar recommendations for small-grain producers. The tests are conducted at the Northeast Research and Extension Center at Keiser, the Vegetable Substation near Kibler, the Lon Mann Cotton Research Station near Marianna, the Newport Extension Center near Newport, the Rohwer Research Station near Rohwer, the Pine Tree …

Summaries Of Arkansas Cotton Research 2018, Fred Bourland

Arkansas Agricultural Experiment Station Research Series

Arkansas ended the 2018 season ranked 5th nationally in harvested acres (480,000 acres), 4th in lint yield (1150 lb/acre), and 4th in total production (1,150,000 bales). The string of consecutive years with good yields is helping to drive the increase in cotton acres. Harvest and ginning capacity is a major limiting factor for acre expansion. Cotton planting intentions for 2019 released in late March are at 580,000 acres, up 20% from the 485,000 acres planted in 2018. This continues to push the ginning capacity of 28 gins in 2018 and on-farm picker capacity to the limit. Optimism for cotton is …

Parthenocarpic Cucumber Cultivar Evaluation In High-Tunnel Production, Wenjing Guan, Elizabeth Maynard, Bronwyn Aly, Julie Zakes, Dan Egel, Laura Ingwell

Department of Horticulture & Landscape Architecture Faculty Publications

Fresh-consumed parthenocarpic cucumbers (Cucumis sativus) are a popular and high-value crop sold in local food markets. The parthenocarpic plant characteristics and climbing growth habit make cucumbers an ideal crop for high-tunnel production. Major types of parthenocarpic cucumbers include Beit alpha and mini, Dutch greenhouse, American slicer, and Japanese. Information regarding yield performance, plant growth, and disease resistance of the four types grown in high-tunnel conditions is limited. In this study, 16 parthenocarpic cucumber cultivars from the four major types were evaluated in high tunnels at three locations in Indiana and Illinois during Spring 2018. Plants were pruned to …

Pengaruh Dosis Kascing Dan Bioaktivator Terhadap Pertumbuhan Dan Hasil Tanaman Sawi (Brassica Juncea L.) Yang Dibudidayakan Secara Organik, Agus Wahyudin, Aep Wawan Irwan

Jurnal Kultivasi

Peningkatan produktivitas sawi (Brassica juncea L.) dapat dilakukan secara organik. Tujuan penelitian ini untuk mengetahui pengaruh dosis kascing dan penggunaan bioaktivator terhadap pertumbuhan dan hasil tanaman sawi. Rancangan yang digunakan adalah Rancangan Acak Kelompok (RAK), terdiri atas sembilan kombinasi perlakuan dan diulang empat kali, masing-masing kombinasi perlakuan adalah: tanpa kascing dan tanpa bioaktivator; kascing 5 ton/ha dan tanpa bioaktivator; kascing 5 ton/ha dan bioaktivator 4 mL/L; kascing 10 ton/ha dan tanpa bioaktivator; kascing 10 ton/ha dan bioaktivator 4 mL/L; kascing 15 ton/ha dan tanpa bioaktivator; kascing 15 ton/ha dan bioaktivator 4 mL/L; kascing 20 ton/ha dan tanpa bioaktivator; serta kascing …

Pengaruh Komposisi Media Tanam Dan Waktu Aplikasi Zat Pengatur Tumbuh Terhadap Pertumbuhan Dan Hasil Benih Kentang (Solanum Tuberosum L.) G2 Kultivar Medians Di Dataran Medium Jatinangor, Jajang Sauman Hamdani, Tessa Prima Dewi, Wawan Sutari

Jurnal Kultivasi

Kentang termasuk jenis sayuran komersial bernilai tinggi yang dapat dijadikan sebagai pangan alternatif. Rendahnya ketersediaan benih kentang dapat berpengaruh terhadap produksi kentang. Terbatasnya lahan penanaman kentang di dataran tinggi sehingga diperlukan ekstensifikasi di dataran medium melalui rekayasa media tumbuh dan hormon tumbuh yang bisa mengurangi efek negatif penanaman kentang di dataran medium. Percobaan ini bertujuan untuk mengetahui interaksi antara komposisi media tanam dengan waktu aplikasi zat pengatur tumbuh terhadap pertumbuhan dan hasil benih kentang G2 kultivar Medians di dataran medium Jatinangor. Percobaan dilaksanakan di Kebun Percobaan Ciparanje, Fakultas Pertanian, Universitas Padjadjaran, Jatinangor. Rancangan percobaan yang digunakan yaitu Rancangan Acak Kelompok …

Pengaruh Asam Giberelat (Ga3) Dan Waktu Panen Terhadap Kualitas Hasil Buah Zukini (Cucurbita Pepo L.), Kusumiyati, Syariful Mubarok, Ine Elisa Putri, Risa Nurul Falah

Jurnal Kultivasi

Zukini merupakan sayuran buah yang banyak diminati oleh konsumen. Sayuran ini memiliki kadar air yang tinggi. Petani memerlukan teknik budidaya yang tepat untuk meningkatkan kualitas buah zukini, diantaranya dengan penggunaan hormon giberelin (GA3) dan waktu panen yang tepat. Tujuan dari penelitian ini adalah untuk mengetahui efek penggunaan GA3 dan perbedaan waktu panen terhadap kualitas hasil buah zukini, yaitu nilai total padatan terlarut (TPT), kekerasan, dan kadar air buah. Penelitian menggunakan metode percobaan rancangan acak lengkap (RAL) factorial, dengan 2 faktor dan 5 ulangan. Faktor pertama yaitu konsentrasi GA3 (0 part per million (ppm) dan 300 ppm) dan faktor kedua yaitu …

Keragaman Dan Kelimpahan Arthropoda Pada Tajuk Tanaman Cabai Merah Keriting (Capsicum Annuum L.) Varietas Tm 999 Yang Diberi Aplikasi Insektisida Klorantraniliprol 35%, Sudarjat, Annisa Handayani, Siska Rasiska, Wawan Kurniawan

Jurnal Kultivasi

Penelitian ini bertujuan untuk mengetahui keragaman dan kelimpahan arthropoda yang terdapat pada tajuk tanaman cabai yang diberi aplikasi insektisida klorantraniliprol 35%. Metode yang digunakan adalah metode eksperimen dengan rancangan acak kelompok dengan enam perlakuan dosis insektisida klorantraniliprol 35%. Hasil dari penelitian ini adalah didapatkan keragaman pada pengamatan langsung sebanyak 5 ordo, 7 famili dan 7 spesies untuk herbivor, 3 ordo, 4 famili dan 4 spesies untuk predator, serta 1 ordo, 1 famili dan 1 spesies untuk serangga netral. Keragaman yang didapatkan pada pemasangan perangkap kuning yaitu 4 ordo, 4 famili dan 4 spesies untuk herbivor, untuk serangga netral terdiri dari …

Ekstrak Daun Bunga Pukul Empat Dan Daun Pagoda Sebagai Tanaman Antivirus Untuk Mengendalikan Penyakit Keriting Pada Cabai Rawit (Capsicum Frutescens L.), Shalahuddin Mukti Prabowo, Sangrani Annisa Dewi

Jurnal Kultivasi

Banyak petani cabai yang menggunakan pestisida kimia sebagai pilihan utama untuk mengendalikan penyakit keriting. Penelitian ini bertujuan mempelajari potensi ekstrak tumbuhan berdaya antivirus: bunga pukul empat dan pagoda, dalam mengendalikan penyakit keriting pada cabai yang disebabkan virus. Penelitian ini dilakukan di lahan endemi penyakit keriting pada cabai merah di daerah Kabupaten Sukoharjo. Penelitian ini dilaksanakan mulai bulan April sampai Juni 2018. Bahan yang digunakan adalah tanaman sebagai bahan pesisida nabati: bunga pukul empat dan pagoda. Alat yang digunakan blender, sprayer, jerigen, baskom dan alat tulis. Penelitian menggunakan rancangan acak kelompok (RAK) dengan 5 perlakuan, yaitu tanpa perlakuan pestisida nabati; ekstrak …

Integrated Pest Management In The Academic Small Greenhouse Setting: A Case Study Using Solanum Spp. (Solanaceae)., Daniel S. Hayes, Ingrid E. Jordon-Thaden, Jason T. Cantley, Angela J. Mcdonnell, Christopher T. Martine

Faculty Journal Articles

Premise

Botanical faculty and staff at academic institutions are often tasked with establishing and/or caring for plant collections held in small greenhouse facilities. Once plants are in place, an especially acute challenge is managing plant pest/pathogen populations. Integrated pest management (IPM) approaches are an excellent option, but few examples exist in the literature of successful programs that have been developed in academic small greenhouse settings.

Methods and Results

Over several years, we developed an IPM program for two small research greenhouses on the campus of a primarily undergraduate institution where hundreds of plants have been grown for studies in the …

Nebline, August 2019

NEBLINE Newsletter Archive from Nebraska Extension in Lancaster County

Kids Eat Right Month

Food Safety Tips for Electric Multi-Cookers

Recipe of the Month

Soybean Management Field Days

Landlord–Tenant Cash Rent Workshop, Aug. 21

Fall is Best for Control of Tough Weeds

Free Water Screening for Nitrates

Include Pets in Your Emergency Plan

Going Batty: Bugs on Bats

Make Your Yard a Greener Place

Garden Guide: Things to Do This Month

Tips for a Fun and Educational Day at the Fair

Upcoming Early Childhood Trainings

Heart of 4-H Volunteer Award: Susan Holland

4-H’ers Test Family and Consumer Science and Entrepreneurship Skills at Life Challenge

4-H’ers Test Their Knowledge of Animals …

Effects Of Sudangrass Cover Crop And Soil Solarization On Weed And Pathogen Management In Organic Strawberry Production, Timothy Jacobs

Master's Theses

Field and lab experiments were conducted to determine the efficacy of sudangrass (Sorghum X drumondii (Nees ex Steud.) Millsp. & Chase) cover crop management techniques and soil solarization on important agricultural weeds and pathogens in organic strawberry production in Central California. Lab experiments assessed the time needed to kill weed seeds at temperatures typically achieved during soil solarization (40°C, 45°C, 50°C, 55°C, and 60°C) in California. Seeds tested included little mallow, redstem filaree, bristly oxtongue, annual sowthistle, common purslane, nettleleaf goosefoot, and redroot pigweed. Efficacy of simulated …

Identifying Consumer Perceptions Of Fresh-Market Blackberries, Aubrey Dunteman

Food Science Undergraduate Honors Theses

Blackberries are grown worldwide for commercial fresh markets, but there is limited information on consumer perceptions of this fruit. In this study, physiochemical and consumer sensory attributes of three Arkansas-grown fresh-market blackberry genotypes were evaluated and consumer perceptions of fresh-market blackberries were also investigated though an online survey. Two cultivars (Natchez and Ouachita) and one advanced selection (A-2418) were evaluated for compositional and nutraceutical analysis and consumer sensory analysis. Natchez had the highest berry weight, length, drupelets and pyrenes/berry, and pyrene weight/berry. Ouachita had the highest soluble solids content (11.9%), pH (3.18) and soluble solids/titratable acidity ratio (10.92). There were …

An Integrated Genomics And Phenomics Approach To Study The Evolution Of C4 Photosynthesis, Daniel Santana De Carvalho

Department of Agronomy and Horticulture: Dissertations, Theses, and Student Research

The C4 photosynthetic pathway was first described over 50 years ago. Today, it is known that C4 evolved independently > 60 in plant lineages, which involves understanding not only the genetic, but also the metabolic features and differences involved in this process. Also, several adaptations are involved in the evolution of this type of photosynthesis, for example: changes in leaf anatomy and the evolution of kranz anatomy, physiology and metabolic pathways. In order to further investigate this pathway, different technologies and methods have been developed to unravel genes involved in C4 photosynthesis. With the advances in molecular biology and bioinformatics tools …

Microbial Response To Biodegradable Mulch: Can Degradation Rate Be Accelerated By Management?, M. Benjamin Samuelson

Department of Agronomy and Horticulture: Dissertations, Theses, and Student Research

Single-use, petroleum-based polyethylene mulch is ubiquitous in certified organic mulched vegetable systems, representing a broken nutrient cycle and a waste concern. Current organic-allowable biodegradable mulches cannot match the performance of polyethylene, in part because of the requirements that they contain 100% bio-based feedstock, and biodegrade within two years after soil incorporation. It is valuable to understand whether management can influence postharvest degradation rate of mulch films. Two biodegradable mulches: a potentially organic nonwoven polylactic acid and wood particle prototype (PLA), and a widely-adopted non-organic starch/copolymer blend, Bio360® (BLK), were used in field trials in two distinct ecoregions of Nebraska, at …

Optimum Planting Dates For Garlic In Southwest Missouri, Esther A. Nelson

Graduate Theses/Dissertations

Garlic (Allium sativum) is one of the most widely used spices in the world. More research is needed to outline the best growing practices for garlic in Southwest Missouri. The study is designed to look the yield produced by four different fall planting and one spring date. Three varieties of garlic including Inchilium Red, German White and Elephant were planted on each date at two separate locations in Southwest Missouri for one year. The garlic was found to have highly diverse yields at both locations and when planting dates where compared. Elephant garlic produced the highest yield when …

Rust And Viral Mosaic Diseases In Biofuel Switchgrass, Anthony A. Muhle

Department of Agronomy and Horticulture: Dissertations, Theses, and Student Research

Switchgrass (Panicum virgatum L.) is a perennial warm-season monocot that is indigenous to locations in North America east of the Rocky Mountains, and is considered a model grass for biofuel feedstock production. As switchgrass production increases, diseases pose a potential threat to biomass production and ethanol extraction. The two predominant switchgrass diseases in Nebraska are rust caused by Puccinia spp. and a viral mosaic disease caused by Panicum mosaic virus (PMV) and its associated Satellite panicum mosaic virus (SPMV). In this thesis, one study determined how SPMV affects PMV infection and systemic spread in two populations of switchgrass at different …

Hormonal Signaling Induced In Soybean By Lysobacter Enzymogenes Strain C3, Jessica C. Walnut

Department of Agronomy and Horticulture: Dissertations, Theses, and Student Research

The biological control bacterium Lysobacter enzymogenes strain C3 has been shown to suppress fungal diseases by producing a suite of lytic enzymes and antimicrobial secondary metabolites. Previous studies have found that C3, when applied to grass and cereal plants, also is capable of inducing local and systemic resistance against fungal pathogens. It is unknown, however, whether the bacterium has the ability to induce resistance in dicots and what signaling pathways are involved. This study assessed the ability of C3 to trigger local and systemic induced resistance responses in soybean (Glycine max ‘Williams82’) by analyzing relative expression of salicylic acid …

B.R. Wells Arkansas Rice Research Studies 2018, R. J. Norman, K. A.K. Moldenhauer

Arkansas Agricultural Experiment Station Research Series

No abstract provided.