farming By Earkfeld Apr 13, 1773 cotton gin Apr 13, 1819 The first iron plow was invented Apr 13, 1842 first grain elavator Apr 13, 1847 irragition began in utah Apr 13, 1850 the United States had 1,449,000 farms Apr 13, 1870 silos came into use Apr 13, 1881 hybred corn produced Apr 13, 1910 tractors came into use in areas of big farming Apr 13, 1936 first automatic baler for hay Apr 13, 1954 first time that there is more tractors then horses Apr 13, 1959 tomato harvester developed Apr 13, 1960 Anhydrous increasingly used as cheap source of nitrogen Apr 13, 1975 20ft disk Apr 13, 1975 4 row cultivator Apr 13, 1980 15-foot combine Apr 13, 1980 more farmers use no till to stop erosion Apr 13, 1992 first gas tractor invented Apr 13, 2005 The first satellite for gps was launched in 2005 Apr 13, 2015 45 ft draper head
