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Wild-type Atlantic salmon (Salmo salar)AquAdvantage salmon is a genetically engineered (GE) fish, a GE Atlantic salmon developed by AquaBounty Technologies in 1989. The typical growth hormone-regulating gene in the Atlantic salmon was replaced with the growth hormone-regulating gene from Pacific Chinook salmon, with a promoter sequence from ocean pout.
Compost tea contains a mix of beneficial microbes, which may attack or out-compete certain plant pathogens, [74] but variability among formulations and preparation methods may contribute to inconsistent results or even dangerous growth of toxic microbes in compost teas. [75] Some naturally derived pesticides are not allowed for use on organic ...
Non-aerated compost tea is cheaper and less labor-intensive, but there are conflicting studies regarding the risks of phytotoxicity and human pathogen regrowth. [74] Aerated compost tea brews faster and generates more microbes, but has potential for human pathogen regrowth, particularly when one adds additional nutrients to the mixture. [74]
The addition of phosphorus as super-phosphate enables much greater crop yields. [4] Although there is some replenishment of soil phosphorus from mineral sources and release from soil complexes by physical and biological mechanisms, the rate of re-solubilisation is too low to support modern agricultural productivity.
A common ultralight alternative to an internal frame pack is a frameless pack made of ripstop nylon, silnylon, or ultra-high-molecular-weight polyethylene with a carrying limit of around 11 kg (24 lb). A large internal-frame pack will usually weigh more than 1 kg (2.2 lb), with features such as hip belts, lifter straps, sternum straps, and ...
Ultra-long-haul flights lasting over 16 hours have been around since the 1930s. While modern jet aircraft travel at faster speeds and cover longer distances, the record for the longest scheduled commercial ultra-long-haul flight route was set in 1943. [7] Some of the historical ultra-long-haul routes include: