Plant development regulators and watermelon production

Plant Based Diet Plan

Plant growth regulatorsare those synthetic products which have similar physical and biological effects with plant hormonal agents, primarily including auxin, gibberellin, cytokinin, abscisic acid, vinyl and brassinolide, etc.Plant . development regulator in the growth and development of watermelon are used in the . following elements: the nursery stage using gibberellic acid (gibberelin class) . as an initiator to improve the germination rate and germination energy( germinating . harmony) of watermelon seed; while the temperature level or humidity is not the . time utilizing development inhibitors to prevent” high seedlings “occurring, prevent . leggy seedlings; if the seeds with excellent quality and ecological conditions . appropriate so that it can entirely no requirement the development regulators. After watermelon . transplanting to the field the plant growth regulator which promote watermelon . fruit is the most extensively utilized, mainly the cytokinin substances;
presently the . most widely utilized in the production is Forchlorfenuron, it comes from a . synthetic cytokinin compound, the chemical name is 1- (2 -chloro-4- pyridyl
) . -3 -phenyl urea, also called forchlorfenuron, CPPU, KT-30 and so on.
Watermelon . is a type of common cross-pollinated crop, prior to fructify it should be .
pollinated. In the early spring growing, some locations are since of more .
rainy days, low temperature, inadequate light, watermelon plants male flowers .
open less, pollen viability is low, synthetic pollination exist pollination . tough, not fructify and other exceptional problems, so that use the growth . regulator including CPPU and other compounds to treat, have the benefits of
. low expense, high fructify, and for that reason have some level applying on watermelon .
production.CPPU . can successfully promote watermelon fructify, there have actually been numerous documents .
reported the

application of CPPU on watermelon’s growth and development. CPPU . is commonly accepted that can cause the parthenocarpic of watermelon, improve watermelon’s .
fulfillment rate and promote watermelon fruit expanding, therefore, CPPU also .
commonly referred fructify drug.Currently, . all nations in the world were performed the pesticide registration system,

just the registered pesticides permitted appearing in the market and usage.
In the . pesticide registration process, the government department rigorous evaluation the . ecological security of pharmacon, get signed up representatives are shown safe for
. the environment and human health. The United States in September 2004 .
approved forchlorfenuron( the trade name CPPU, KT-30) as a new plant growth regulator utilized . on the grapes and kiwi. The United . States think CPPU is a cytokinin, can . promote fruit increasing the size of, enhance fulfillment rate, boost production, extended the . storage time of grapes and kiwi, not impacting the variety of fruit and keep
. fruit quality.In Japan, CPPU is a . chemical extensively used in agriculture, to improve the yield

and quality of kiwi, .
grapes, pears and others, likewise used to enhance the fulfillment rate of watermelon, . melon and pumpkin.Japanese . recommended optimum residue limitations (MRL )for pesticides CPPU value is 0.1 mg/kg

, .
Australia, Israel, USA, New Zealand and other countries needed the MRL of .
CPPU is 0.01 mg/kg, the European Union, Switzerland, South Korea and so on .
required the pesticide residue standards of CPPU is 0.05 mg/kg.
China required . the MRL of watermelon CPPU is 0.1 mg/kg.
About the . residue analysis of CPPU used in watermelon, researchers performed a . organized research study, the outcomes reveal that Forchlorfenuron dissipated in . watermelon is fairly quick, the half-life is 1.2-1 .67 d; when the watermelon . harvest (after using the drug 40d), there is not Forchlorfenuron
residue discovered . in watermelon fruit; soil likewise not detected out Forchlorfenuron residues, . results strongly show that use in the recommended dosage< img src="" alt =" Science Articles" border=" 0"/ >, CPPU use in . watermelon is safe.Source: Plant Based Diet