Search Results

You are looking at 1 - 10 of 845 items for :

  • "plant growth regulators" x
Clear All
Free access

Sarah A. White, Holly L. Scoggins, Richard P. Marini and Joyce G. Latimer

fulfillment of the requirements for the MS degree. The authors gratefully acknowledge the technical assistance of Velva Groover. Plant material generously provided by Yoder Green Leaf, Lancaster, Pa. Multivariate repeated measures analysis of plant growth

Free access

Patrick E. McCullough, Haibo Liu, Lambert B. McCarty and Ted Whitwell

Dwarf bermudagrass morphological characteristics following the use of plant growth regulators have not been reported. The objective of this greenhouse study was to determine short-term effects of seven plant growth regulators on clipping yield, chlorophyll concentration, and root mass of `TifEagle' bermudagrass. Growth regulators tested included ethephon, fenarimol, flurprimidol, maleic hydrazide, mefluidide, paclobutrazol, and trinexapac-ethyl. Two applications of each compound were made over a 6-week period. Root mass was reduced 39% by fenarimol and 43% by flurprimidol, while other PGRs had root mass similar to untreated turf. `TifEagle' bermudagrass treated with paclobutrazol, mefluidide, fenarimol, and flurprimidol averaged 45% less root mass than trinexapac-ethyl-treated turf. Trinexapac-ethyl was the only compound to reduce clippings and enhance turf quality without negative rooting effects. Chemical names used: [4-(cyclopropyl-[α]-hydroxymethylene)-3,5-dioxo-cyclohexane carboxylic acid ethyl ester] (trinexapac-ethyl); {α-(1-methylethyl)-α-[4-(trifluoro-methoxy) phenyl] 5-pyrimidine-methanol} (flurprimidol); (+/-)-(R*,R*)-β-[(4-chlorophenyl) methyl]-α-(1, 1-dimethyl)-1H-1,2,4,-triazole-1-ethanol (paclobutrazol); (N-[2,4-dimethyl-5 [[(trifluoro-methyl)-sulfonyl] amino]phenyl]acetamide) (mefluidide); [1,2-dihydro-3,6-pyridazine-dione] (maleic hydrazide); [(2-chloroethyl)phosphonic acid] (ethephon); and (2-(2-chlorophenyl)-2-(4-chlorophenyl)-5-pyrimidinemethanol) (fenarimol).

Free access

Shi-Ying Wang

76 ORAL SESSION 13 (Abstr. 478-483) Floriculture: Postharvest Physiology/Plant Growth Regulators

Full access

Helen E. Hammond, Richard K. Schoellhorn, Sandra B. Wilson and Jeffrey G. Norcini

cumbersome size for handling and shipping. Applications of plant growth regulators (PGRs) may help to extend the amount of time these plants can be held before distribution and sale, to improve visual quality, and to facilitate shipping. There are many PGRs

Free access

Craig A. Campbell

142 WORKSHOP 19 (Abstr. 688-690) Opportunities and Challenges in the Development and Registration of Plant Growth Regulators Wednesday, 26 July, 10:00 a.m.-12:00 noon

Free access

Pascal Nzokou and Paligwende Nikiema

creates a challenge for researchers to develop treatments or approaches that will improve tree resistance to frost damage in case of warm winter temperatures. One potential solution is the use of plant growth regulators (PGRs) to influence the natural

Free access

D.W. Williams and P.B. Burrus

1 Assistant Professor. 2 Research Specialist. We gratefully acknowledge partial funding of this project by the United States Golf Association and the Kentucky Turfgrass Council. Discussions of herbicides and plant growth regulators imply no

Free access

Khalid M. Elhindi, Yaser Hassan Dewir, Abdul-Wasea Asrar, Eslam Abdel-Salam, Ahmed Sharaf El-Din and Mohamed Ali

dormancy, various methods like scarification, pretreatment with plant growth regulators (PGRs), and temperature shocks are used to break dormancy ( Copeland and McDonald 2001 ; Hidayati et al., 2012 ). Plant seed germination depends on both intrinsic and

Free access

James T. Brosnan, Adam W. Thoms, Gregory K. Breeden and John C. Sorochan

, whereas soil compaction negatively alters soil physical properties ( Carrow and Petrovic, 1992 ). Plant growth regulators (PGRs) have been defined as organic compounds that alter turfgrass growth or development by targeting the actions of plant hormones

Free access

Martin Makgose Maboko and Christian Phillipus Du Plooy

·L −1 ( Table 2 ). This is in agreement with Chhonkar and Ghufran (1968) , who reported that plant height decreased in tomato plants treated with an increased concentration of NAA. Table 2. Effect of plant growth regulators on sweet pepper yield in a