Early cone formation is a consistent issue in Fraser fir Christmas tree plantations the eastern United States. Growers must remove cones by hand, resulting significant labor costs, as degrade aesthetic value of trees. In this study, we conducted two series experiments collaboration with several farms to determine effectiveness applying plant growth regulators (PGRs), specifically GA-inhibitors,...

Plant growth regulators (PGRs) are commonly used in commercial farming to control lodging in cereals. PGRs have been shown to alter yield formation and plant stand structure, other than the straw length. To study their potential in Northern growing conditions PGRs and their application time impacts on plant stand structure and yield formation in tall and short statured cultivars of barley, oat,...

Chemical plant growth regulators (PGRs) are used in the production of ornamental potted and bedding plants. Growth control is needed for maximizing production per unit area, reducing transportation costs and to obtain a desired visual quality. However, the use of PGRs is associated with toxicity risks to humans and the environment. In many countries the availability of PGRs is restricted as few...

Calluses from seasonal mature shoots of Taxus globosa Schltdl. were subcultured in new medium containing 1 mg l -1 NAA, 0.5 mg l -1 2, 4-D, 0.025 mg l -1 BA. Calluses growing for 30 and 40 days in a medium added with 0.1-5.0 mg l -1 of chlorocholine chloride (CCC) were harvested for determination of taxol, phenolic compounds, and for polyphenol oxidase (PPO) activity. The results showed that by...

A rapid and sensitive method for the analysis of paraquat and diquat was developed using LC/MS, electrospray ionisation (ESI), positive ion mode, selective ion monitoring (SIM) large volume injections, and minimal sample preparation. No trace enrichment was required to obtain limits of detection (LOD) below 1 μg/L, which is well below the World Health Organisation (WHO) advisory value of 10 μg/...

Rapid growth and scattered plant types are urgent issues for potted Melaleuca alternifolia. An effective strategy dwarfing cultivation is the exogenous application of regulators (PGRs) to plants. However, many non-wood forest species, there currently limited understanding regulatory mechanism effects PGRs, which greatly limits PGRs. In this study, three paclobutrazol (PP333), uniconazole (S3307...

The present study, "Effect of plant growth regulators on growth, fruit setting, and quality guava (Psidium guajava L.) in meadow orchard," was carried out the years 2021–2022, at Central Research Farm, Department Horticulture, Sam Higginbottom Institute Agriculture & Sciences, Prayagraj (U.P.). Ten treatments made up experiment with: control, three concentrations gibberellic acid (GA3) 75, ...

Chlormequat (cycocel or CCC), the plant growth retardant, was evaluated for its ability to control plant height in Brassica oleracea cultivar ‘Kamome White’ and ‘Nagoya Red’. Different concentrations of CCC (0, 500, 1000 and 1500 mg/L) were sprayed and drenched on plants 40 days after transplanting. Data were recorded the 60 and 90 days after transplanting. The 1500 mg/L of CCC resulted in abou...