"The country risks losing international markets for some of its cash crops due to continued use of such herbicides like 2,4-D
and Roundup believed to cause life threatening diseases like cancer," cautioned Mr Kamau Kuria, the managing director of Coffee Management Services Mills.Countries such as the US, Germany, Japan and Switzerland, he said, have warned against importation of crops in which such banned herbicides have been used to control weeds.
As a result, it was concluded that carbaryl and 2,4-D
administered under of LC50 value caused liver damage by increasing the oxidative stress of Capoeta capoeta.
Mixture of florasulam + 2,4-D
+ Kelpak applied at the dose 3.75g a.i x [ha.sup.-1] + 180g a.i x [ha.sup.-1] + 2[dm.sup.3] x [ha.sup.-1] at the growth stage BBCH 30;
Two sequential applications of 2,4-D
, each one with 1,000 g [ha.sup.-1] of the acid equivalent (a.e.) resulted in better control of glyphosate-resistant cotton stalk regrowth in the three environments studied (Table 4).
This way, the objective of this work was to evaluate the agronomic characteristics of pumpkin fruits of Tetsukabuto hybrid as a function of 2,4-D
doses as phytohormonal inducer.
Considering these three aspects, the media showing these three desired characteristics were those containing the 2,4-D
growth regulator at concentrations of 6.7 [micro]mol [L.sup.-1] and 9.0 [micro]mol [L.sup.-1] in association with BAP at these concentrations (M11, M12, M15 and M16).
(10 mg L-1)###5.00###5.00###5.00###5.00###5.00A
, NAA in combinations with BAP (ranging from 0.5 to 2 mg L- 1) such as 0.5 mg L-1 BAP + 1 mg L-1 2,4-D
(designated as BD1), 1 mg L-1 BAP + 1.5 mg L-1 2,4- D (designated as BD2), 1.5 mg L-1 BAP + 1 mg L-1 2,4-D
(designated as BD3), 0.5 mg L-1 BAP + 1 mg L-1 2,4-D
(designated as BD4).
Similarly, not a single governmental agency has deemed 2,4-D
has high phytotoxicity, it is possible that it should not be used as a commercial rooting substance, but there is a lack of studies on this, so the effects of this compound on the rooting of vine cuttings should be tested.
The Environmental Protection Agency is expected to rule this fall on Dow AgroSciences' application to market Enlist, a new version of the 2,4-D
herbicide that's been around since the 1940s.
A plan under consideration by the Obama administration would result in at least a three-fold increase in use of the herbicide 2,4-D
Though, dark culture conditions triggered more calli on lower levels of 2,4-D
(0.5-2.0 mgL-1) compared with higher levels in Cotyledon and Hypocotyl explants, however, calli growth was greater under long days in both crops.