Cotton gin trash compost in the substrate reduces the daminozide spray dose needed to produce compact potted chrysanthemum

dc.contributor.author	Papafotiou, M	en
dc.contributor.author	Vagena, A	en
dc.date.accessioned	2014-06-06T06:51:42Z
dc.date.available	2014-06-06T06:51:42Z
dc.date.issued	2012	en
dc.identifier.issn	03044238	en
dc.identifier.uri	http://dx.doi.org/10.1016/j.scienta.2012.06.004	en
dc.identifier.uri	http://62.217.125.90/xmlui/handle/123456789/5642
dc.subject	Dendranthema grandiflora	en
dc.subject	Dry weight	en
dc.subject	Growth retardation	en
dc.subject	Internodal length	en
dc.subject	Leaf size	en
dc.subject	Ornamental plant	en
dc.subject	Physicochemical properties	en
dc.subject	Plant growth retardant	en
dc.subject.other	bulk density	en
dc.subject.other	compost	en
dc.subject.other	cost-benefit analysis	en
dc.subject.other	cotton	en
dc.subject.other	cultivation	en
dc.subject.other	flower	en
dc.subject.other	growth rate	en
dc.subject.other	leaf area	en
dc.subject.other	ornamental species	en
dc.subject.other	peat	en
dc.subject.other	perlite	en
dc.subject.other	physicochemical property	en
dc.subject.other	porosity	en
dc.subject.other	shoot growth	en
dc.subject.other	substrate	en
dc.subject.other	Chrysanthemum	en
dc.subject.other	Chrysanthemum x morifolium	en
dc.subject.other	Gossypium hirsutum	en
dc.title	Cotton gin trash compost in the substrate reduces the daminozide spray dose needed to produce compact potted chrysanthemum	en
heal.type	journalArticle	en
heal.identifier.primary	10.1016/j.scienta.2012.06.004	en
heal.publicationDate	2012	en
heal.abstract	Research was conducted to evaluate cotton gin trash compost (CGC) as a peat substitute in the growth medium of compact potted chrysanthemum, and its possible interaction with the plant growth retardant butanedioic acid mono-(2,2- dimethylhydrazide) (daminozide) applied to control plant size. Rooted terminal cuttings of Dendranthema grandiflora Tzvelev. var. Yoko Ono were potted in an 1 peat: 1 perlite (by volume) medium or in an 1 CGC: 1 peat: 2 perlite (by volume) medium and their foliage was sprayed three times with an aqueous solution of 0, 2000, 2500, 3000 or 3500mgl -1 daminozide. The replacement of half of the peat amount in the growth medium with CGC had a restrictive effect on shoot elongation, retarding mainly the internodal length, effect similar to that induced by daminozide. Plants grown in the CGC medium and not treated with daminozide had similar shoot lengths as plants in the peat-perlite medium sprayed with 2000 or 2500mgl -1 daminozide. The combination of CGC with the lowest daminozide concentration used (2000mgl -1) induced shoot growth retardation similar to that induced by the highest concentrations (3000-3500mgl -1) of daminozide in the peat-perlite medium. Leaf size was reduced by CGC as by the higher doses of daminozide, while flower head size was not affected. Both, daminozide and CGC, induced an acceleration of flowering, but the final flower head number was not affected. CGC decreased shoot, flower head and peduncle dry weights and increased root dry weight. At planting day, CGC medium had higher pH, EC, bulk density and total solids and lower total porosity and EAW (easily available water) compared to peat-perlite medium; it also held less water in saturation and drained faster. At the end of the experiment the two media had similar pH and EC values. Substitution of 50% peat with CGC in the commonly used medium for potted chrysanthemum commercial cultivation resulted in a reduction of at least 33% of the dose of daminozide necessary to meet the needs of the market for compact plants, with multiple economic and environmental benefits. © 2012 Elsevier B.V.	en
heal.journalName	Scientia Horticulturae	en
dc.identifier.volume	143	en
dc.identifier.doi	10.1016/j.scienta.2012.06.004	en
dc.identifier.spage	102	en
dc.identifier.epage	108	en