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John Deere Model 60 (1955) John Deere Model 530 (1959) John Deere Model 430S (circa 1960) After years of testing, Deere & Company released its first proper diesel engined tractor in 1949, the Model R. The R was also the first John Deere tractor with a live independent power take-off (PTO) equipped with its own clutch. The R also incorporated ...
In the 1920s, Case Corporation and John Deere made combines, introducing tractor-pulled harvesters with a second engine aboard the combine to power its workings. The world economic collapse in the 1930s stopped farm equipment purchases, and for this reason, people largely retained the older method of harvesting.
Donald Forsha Jones (April 16, 1890 – June 19, 1963) was a United States maize geneticist and practical corn breeder at the Connecticut Agricultural Experiment Station, New Haven. [1] Beginning at the station in 1914, he made high-yielding hybrid corn practical by his invention of the double-cross hybrid.
The tassel of a corn plant. Detasseling corn is removing the pollen-producing flowers, the tassel, from the tops of corn (maize) plants and placing them on the ground. It is a form of pollination control, [1] employed to cross-breed, or hybridize, two varieties of corn. Fields of corn that will be detasseled are planted with two varieties of corn.
1924 - Henry Wallace begins selling 'Copper Cross', an early commercial hybrid seed corn. 1926 - Hi-Bred Corn Company is founded in Des Moines, Iowa, with $7,000 in capital. [7] 1931 - Roswell Garst agrees to produce/distribute seed. The following year Garst partners with Charles Thomas to form the Garst and Thomas Seed Corn Company.
Reid's Yellow Dent is a variety developed by central Illinois farmer James L. Reid. Reid and his father, Robert Reid, moved from Brown County, Ohio, to Tazewell County, Illinois, in 1846 bringing with them a red corn variety known as "Johnny Hopkins", and crossed it with varieties of flint corn and flour corn. [1] Most of today's hybrid corn ...
The oldest type of sweet corn contains more sugar and less starch than field corn intended for livestock. Tends to be heartier in respect to planting depth, germination and growth than other types. Begins conversion of sugar to starch after peak maturity or harvest, and as such is best eaten immediately after harvest.
Later work by corn breeders produced inbred lines with sufficient vigor for practical production of a commercial hybrid in a single step, the single-cross hybrids. Single-cross hybrids are made from just two original parent inbreds. They are generally more vigorous and also more uniform than the earlier double-cross hybrids.