The first Trumpet Judgment was fire and hail mixed with blood that fell from the sky, causing a third of all trees and all forms of vegetation to be burned up. How this affected food production with the use of the synthetic fertilizer formula is not known. This took place in "Soul Harvest".
The second Trumpet Judgment was a burning mountain that fell from space into the ocean, causing a third of the seas to turn to blood and destroying a third of all ships in the sea. This took place in "Soul Harvest".
The third Trumpet Judgment was a "star" that looked like rotten wood (called Wormwood) that also fell from space, but vaporized as it entered the Earth's atmosphere, causing a third of all fresh water springs to be bitter and deadly to drink. This took place in "Soul Harvest"
The fourth Trumpet Judgment was the sun being struck so that it could only generate a third of its heat and light toward the earth; it also affected the moon and the stars. This took place in "Apollyon".
Between this judgment and the next, an angel flew across heaven with this message:
"Woe, woe, woe to the inhabitants of the earth, because of the remaining blasts of the trumpet of the three angels who are about to sound!" (Rev 9:13)
The fifth Trumpet Judgment, called the first woe, was the unleashing of locust creatures upon those that didn't have the seal of God on their foreheads (i.e., nonbelievers), to torture them for five months with painful stings that would cause their victims to desire death but not be able to kill themselves. This effect lasted five months for the victims. This took place in "Apollyon".
The sixth Trumpet Judgment, called the second woe, was the unleashing of 200 million horsemen upon the nonbelievers to kill one-third of the remaining world's population. Those who had the seal of God on their foreheads were able to see the horsemen, but those who didn't have the seal couldn't. This took place in "Assassins".
The seventh Trumpet Judgment, called the third woe, didn't take place until around "Glorious Appearing".