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2. Bifenthrin - Wikipedia

   en.wikipedia.org/wiki/Bifenthrin

   Bifenthrin is poorly soluble in water and often remains in soil. Its residual half-life in soil is between 7 days and 8 months, depending on the soil type, with a low mobility in most soil types. Bifenthrin has the longest known residual time in soil of insecticides currently on the market. It is a white, waxy solid with a faint sweet smell.

3. Residual time - Wikipedia

   en.wikipedia.org/wiki/Residual_time

   Renewal theory texts usually also define the spent time or the backward recurrence time (or the current lifetime) as () = (). Its distribution can be calculated in a similar way to that of the residual time. Likewise, the total life time is the sum of backward recurrence time and forward recurrence time.

4. Pesticide toxicity to bees - Wikipedia

   en.wikipedia.org/wiki/Pesticide_toxicity_to_bees

   length of residual toxicity Comments Bee toxicity Aldicarb: Temik: Carbamate: apply 4 weeks before bloom Relatively nontoxic Carbaryl [20] Sevin, (b) Sevin XLR Carbamate: High risk to bees foraging even 10 hours after spraying; 3 – 7 days (b) 8 hours @ 1.5 lb/acre (1681 g/Ha) or less.

5. Residence time - Wikipedia

   en.wikipedia.org/wiki/Residence_time

   The residence time of a fluid parcel is the total time that the parcel has spent inside a control volume (e.g.: a chemical reactor, a lake, a human body).The residence time of a set of parcels is quantified in terms of the frequency distribution of the residence time in the set, which is known as residence time distribution (RTD), or in terms of its average, known as mean residence time.

6. AOL Mail

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   Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!

7. Pyrethroid - Wikipedia

   en.wikipedia.org/wiki/Pyrethroid

   Pyrethroids are usually broken apart by sunlight and the atmosphere in one or two days, however when associated with sediment they can persist for some time. [better source needed] [9] Pyrethroids are unaffected by conventional secondary treatment systems at municipal wastewater treatment facilities. They appear in the effluent, usually at ...