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2. Wachtel-Wendte Centennial Farm: Innovators then and now - AOL

   www.aol.com/news/wachtel-wendte-centennial-farm...

   Jul. 22—More than a century ago, Doris Wendte's grandfather was the first Effingham County farmer to apply limestone to his fields. It cracked the acidity of the soil. An agricultural innovator ...

3. Center-pivot irrigation - Wikipedia

   en.wikipedia.org/wiki/Center-pivot_irrigation

   A satellite image of circular fields characteristic of center pivot irrigation, Kansas Farmland with circular pivot irrigation. Center-pivot irrigation (sometimes called central pivot irrigation), also called water-wheel and circle irrigation, is a method of crop irrigation in which equipment rotates around a pivot and crops are watered with sprinklers.

4. Hydroponics - Wikipedia

   en.wikipedia.org/wiki/Hydroponics

   Inside an ebb-and-flow hydroponic system employing individual buckets connected by fill/drain hoses. The earliest published work on growing terrestrial plants without soil was the 1627 book Sylva Sylvarum or 'A Natural History' by Francis Bacon, printed a year after his death. As a result of his work, water culture became a popular research ...

5. Water heating - Wikipedia

   en.wikipedia.org/wiki/Water_heating

   An 80 US gal (300 L; 67 imp gal) electric storage tank water heater was able to have a minimum energy factor of 86% under the pre-2015 standard, while under the 2015 standard, the minimum energy factor for an 80-gallon electric storage tank water heater is now 197%, which is only possible with heat pump technology. This rating measures ...

6. Shadoof - Wikipedia

   en.wikipedia.org/wiki/Shadoof

   A shadoof or shaduf [1] is an irrigation tool that is used to lift water from a water source onto land or into another waterway or basin. It is highly efficient, and has been known since 3000 BCE. [citation needed] The mechanism of a shadoof comprises a long counterbalanced pole on a pivot, with a bucket attached to the end of it.

7. Timeline of United States inventions (before 1890) - Wikipedia

   en.wikipedia.org/wiki/Timeline_of_United_States...

   A water-tube boiler is a type of boiler in which water circulates in tubes heated externally by the fire. Water-tube boilers are used for high-pressure boilers. Fuel is burned inside the furnace, creating hot gas which heats up water in the steam-generating tubes. The water-tube boiler was co-invented and co-patented by George Herman Babcock ...