scholarly journals New Plant Growth Regulators: High Risk Investment?

2002 ◽  
Vol 12 (1) ◽  
pp. 64-67 ◽  
Author(s):  
W. Rademacher ◽  
T. Bucci
Keyword(s):  
High Risk ◽  
Plant Growth ◽  
Plant Growth Regulators ◽  
Growth Regulators ◽  
Plant Protection ◽  
Market Potential ◽  
Financial Risks ◽  
The Past ◽  
Risk Investment ◽  
Total Sales

Worldwide, plant growth regulators (PGRs) account for only 3% to 4% of the total sales of plant protection agents. This limited market potential, the rising costs of development and registration, and the demand for high profitability have created major constraints to the introduction of new PGRs. Conversely, PGRs have become an integral part of agricultural and horticultural practices and one might assume that the market is sufficiently lucrative to those companies active in this area. In the past decade, at least seven new PGR products have been introduced. In many cases, reduced requirements for registration have lowered the financial risks relative to expected profits.

scholarly journals 688 New PGRs: High Risk Investment?

HortScience ◽  
2000 ◽  
Vol 35 (3) ◽  
pp. 517D-517
Author(s):  
Wilhelm Rademacher ◽  
Toni Bucci
Keyword(s):  
High Risk ◽  
Plant Growth ◽  
Plant Growth Regulators ◽  
Growth Regulators ◽  
Return On Investment ◽  
Naturally Occurring ◽  
Toxicological Studies ◽  
Severe Constraint ◽  
Risk Investment

Plant growth regulators (PGRs) account for only a few percent of the worldwide sales of crop protectants. In recent years, most companies have drastically reduced their activities in the PGR area. The factors that have been of major relevance in this development are: a) Finding, developing and marketing a new PGR is more difficult and requires a considerably higher input as compared to other types of crop protectants, b) many segments of the market are fairly saturated with competitively priced products, and c) intensified legislation for the registration of new, and the re-registration of established products, has become a severe constraint, due to its absorbing large working and financial capacities. For these and other reasons, new types of PGRs will be economically viable only under certain circumstances, such as: a) A sufficiently large and profitable market guarantees a reasonable return on investment, b) costs for registration can be reduced by developing naturally occurring compounds, which may require considerably less toxicological and eco-toxicological studies, and c) PGR-like side activities of an existing herbicide, fungicide or insecticide can be exploited, which would, again, significantly reduce the costs for registration.

ACTUAL QUESTIONS OF BIOLOGICAL EFFICIENCY, HYGIENE AND TOXICOLOGY IN MODERN TECHNOLOGIES OF AGROCHEMICALS

2018 ◽  
pp. 39-44
Author(s):  
V. G. Sychyov ◽  
O. A. Shapoval ◽  
O. V. Vetrova ◽  
I. P. Mozharova ◽  
A. V. Istomin
Keyword(s):  
Plant Growth ◽  
Plant Growth Regulators ◽  
Growth Regulators ◽  
Plant Protection ◽  
Biological Efficiency ◽  
Agricultural Technologies ◽  
10Th Anniversary ◽  
Wide Range ◽  
Scientific Practical ◽  
State Registration

The article is devoted to the results of the 10th anniversary scientific-practical conference «Anapa-2018» «Prospects for the use of innovative forms of fertilizers, plant protection and plant growth regulators in agricultural technologies» with the participation of leading experts and managers in the field of agrochemical production, specialized agencies, the Russian Academy Sciences, Rospotrebnadzor, and the RF Ministry of Agriculture. The conference discussed a wide range of topical issues on the use of new innovative forms of fertilizers, protection products, plant growth regulators and the technology of their use in agricultural production; issues of state registration, certification and declaration of pesticides and agrochemicals.

scholarly journals Dwarfing Effects of Chlormequat Chloride and Uniconazole on Potted Baby Primrose

2020 ◽  
Vol 30 (5) ◽  
pp. 536-543
Author(s):  
Mengzi Zhang ◽  
Jie Yang ◽  
Huitang Pan ◽  
Brian J. Pearson
Keyword(s):  
Plant Growth ◽  
Plant Height ◽  
Plant Growth Regulators ◽  
Growth Regulators ◽  
Leaf Growth ◽  
Control Plant ◽  
Poor Quality ◽  
Market Potential ◽  
Greenhouse Production ◽  
Chlormequat Chloride

Baby primrose (Primula forbesii) is a newly cultivated and valuable ornamental plant with great market potential for both indoor and landscape use. As a container plant, baby primrose has long, weak flower stalks that can easily lodge, resulting in poor-quality plants, especially during transportation. To control plant height and subsequently prevent flower peduncle lodging, we investigated the effects of two plant growth regulators (PGRs), chlormequat chloride (CCC) at 0, 250, 500, or 750 ppm and uniconazole (UNI) at 25, 50, or 75 ppm on growth, development, and flowering of two cultivars of baby primrose, Fragrant Luolan and Red Star. Plant growth regulators at the proposed concentrations were applied twice throughout the experiment. Both PGRs significantly suppressed plant height in both cultivars, with a 16% to 27% reduction by CCC and 50% to 59% by UNI compared with untreated plants. Among CCC-treated groups, plants were shortest when CCC was applied at 500 ppm; plant height was suppressed more when treated with UNI. In both cultivars, UNI significantly suppressed the first, second, and third peduncle lengths. Furthermore, CCC affected peduncle length, but to a lesser extent than UNI. Plant growth regulator applications generally had little effect on flower characteristics of baby primrose. Neither PGRs influenced the inflorescence number and flower size; however, PGRs did increase the number of floral whorls and suppressed pedicel length of ‘Red Star’. New leaf growth was suppressed by both PGRs. In addition, peduncle cell length and width were both significantly suppressed by PGR applications. We concluded that two foliar applications of UNI at 25 ppm comprised the most effective method of controlling baby primrose plant height while maintaining desirable flower traits at a relatively low production cost. Results of this study provide guidance for techniques that can be used to effectively control the plant height of potted baby primrose for commercial greenhouse production.

Wheat regenerants in the system of rapid assessment of the effect of 24-epibrassinolide

Biomics ◽  
2020 ◽  
Vol 12 (3) ◽  
pp. 394-397
Author(s):  
Seldimirova O.A. ◽  
M.V. Bezrukova ◽  
N.N. Кruglova ◽  
F.М. Shakirova
Keyword(s):  
Plant Growth ◽  
Experimental Model ◽  
Plant Growth Regulators ◽  
Growth Regulators ◽  
Drought Resistance ◽  
Rapid Assessment ◽  
Immature Embryo ◽  
Model System ◽  
Wheat Cultivars ◽  
Experimental Model System

The influence of 24-epibrassinolide on the efficiency of regenerants obtained from embryonic calli formation was studied in wheat cultivars contrast for drought resistance. The possibility of using the experimental model system «immature embryo – embryonic callus – regenerant» in the rapid assessment of the effect of antistress plant growth regulators is shown.

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