U.S. flagAn official website of the United States government
                    Here's how you know **Official websites use .gov**
                            
                            A **.gov** website belongs to an official government organization in the United States.
 **Secure .gov websites use HTTPS**
                            
                            A **lock** (                            
                              A locked padlock                                                      
                            
                            ) or **https://** means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.


Menu Agricultural Research Service
						
                    U.S. DEPARTMENT OF AGRICULTURE
 Tropical Crop and Commodity Protection Research: Hilo, HI
 close



    Research

                    Research Projects
                                    Publications
                                    Collaborations
                                    News
                People

                    Staff Listing
                                    Careers


        


                    Scientist Pages
                        Acebes-Doria, Angelita
                                    Cha, Dong
                                    Follett, Peter
                                    Johnson, Melissa
                                    Liang, Peishih
                                    Manoukis, Nicholas
                                    Siderhurst, Matthew
                                    Sun, XiuxiuSearch small
                    Search
            
            ARS Home
                                About ARS
                                Contact Us




ARS Home Pacific West Area Hilo, Hawaii Daniel K. Inouye U.S. Pacific Basin Agricultural Research Center Tropical Crop and Commodity Protection Research Research Publications at this Location





- ARS National Programs
- Search for a scientific manuscript
- Search for a research project
- ARS Software
- Programs and Projects
- Collaborations
- Subjects of Investigation
- Publications

Title:   Author  item
                                            GREEN, SABINE - New Mexico State Universityitem
                                            PICCHIONI, GENO - New Mexico State Universityitem
                                            MURRAY, LEIGH - Kansas State Universityitem
                                            Wall, Marisa
  Submitted to: HortTechnology
                                    Publication Type: Peer Reviewed Journal
                                    Publication Acceptance Date: 2/1/2010
                                    Publication  Date: 6/1/2010
                                    Citation: Green, S.R., Picchioni, G.A., Murray, L.W., Wall, M.M. 2010. Yield and quality of field-grown Celosia and Gomphrena everlasting cut flowers at four planting densities. HortTechnology. 20(3): 612-619.Interpretive Summary: Four species of field-grown Gomphrena and Celosia produced marketable dried flower crops in as few as 6 to 9 weeks after transplanting and grew well under the high light intensities, high summer temperatures, and alkaline soils of the Chihuahuan desert. Planting density had little or no effect on stem yield and quality of Celosia species or Gomphrena haageana, whereas field production of Gomphrena argentea improved at the higher plant density. These species are good candidates for specialty flower crops in the semiarid southwestern U.S.
                                Technical Abstract: Field-grown cut flowers dried for market could provide a high-value crop selection for semiarid regions, but data on field production of flowers are limited.  We conducted a field study on replicated 1.5-m2 plots to evaluate flower yield and quality characteristics of Gomphrena globosa, G. haageana, Celosia aregentea, and C. spicata, including fresh and dry stem yields, stem diameter and length, total number of harvested sprays (multiple head) and single (solitary head) stems, flower head size, and postharvest flower retention following mechanical impact.  Within-row spacing of 15 or 20 cm combined with two-row or three-row per bed plantings resulted in field planting densities ranging from 66,670 to 120,010 Gomphrena  plants per ha and from 100,005 to 200,010 Celosia plants per ha.  All but C. argentea produced four harvests that began 22 May and ended 18 Oct., depending on species.  Gomphrena globosa and G. haageana had a 5 to 6-month harvest season, two to three mid-season to late-season peak harvests, and over 1000 harvested stems totaling 1.4 to 1.8 kg dry weight per plot across the season.  Celosia argentea and C. spicata had a 4.5-month harvest season, one early summer peak harvest, and fewer than 300 harvested stems totaling 0.6 to 0.7 kg dry weight per plot for the year.  Seasonally-progressive increases in flowering stem length of G. globosa, G. haageana, and C. spicata, and flowering stem diameter of G. globosa, G. haageana, and C. argentea were observed.  Flowering head size of the Gomphrena sp. and head length of C. spicata were largely independent of harvest season, whereas the head diameter of C. argentea increased with season.  Postharvest flower retention was  ̃2% higher for G. globosa than it was for G. haageana, decreased by  ̃6% from early to later harvests for C. argentea and C. spicata, and was inversely related to the head size of G. globosa, G. haageana, and C. argentea.  Despite the wide range in planting density, the density effect was largely limited to one of the four species, C. argentea.  For that species, three-row planting (high density) provided marginal across-the-year yield enhancement (P < 0.0650), with additional significant effects (P < 0.05) as follows:  an increase in the seasonal cumulative harvested number of stems, longer stems and wider flower heads later into the season, and a prolonged production of spray stems (15 cm spacing only).  Results contribute to a limited scientific database on field-grown specialty cut flowers for the dried market, and demonstrate that these four species are highly adaptable to semiarid growing conditions.


Return to top


Connect with ARS Sign up


ARS Home
                            USDA.gov
                            Plain Writing
                            Policies & Links
                            Civil Rights Statements
                            FOIA
                            Accessibility Statement
                            Privacy Policy
                            Non-Discrimination Statement
                            Quality of Information
                            USA.gov
                            WhiteHouse.gov