. Bulletin. Agriculture; Agriculture -- Arizona. Johnson Grass Control 347 a considerable stand was noted and a large number of rootstocks were being- formed. At this time the land was irrigated and deeply plowed. Shortage of labor and horse power prevented plowing immediately after the removal of the grain but if the land could have been worked at that time very much better results would have been obtained. As the field appears in the fall of 1917 the Johnson grass is under control but by no means eradicated. FIELD H ; CONTINUOUS DRY FALLOW This held was partially mowed and burned over in 191
. Bulletin. Agriculture; Agriculture -- Arizona. Johnson Grass Control 347 a considerable stand was noted and a large number of rootstocks were being- formed. At this time the land was irrigated and deeply plowed. Shortage of labor and horse power prevented plowing immediately after the removal of the grain but if the land could have been worked at that time very much better results would have been obtained. As the field appears in the fall of 1917 the Johnson grass is under control but by no means eradicated. FIELD H ; CONTINUOUS DRY FALLOW This held was partially mowed and burned over in 1915. In March and April, 1916, the land was plowed dry and the growth of Johnson grass visibly retarded. Leakage from an irrigating ditch and a heavy rain early in September encouraged the grass until it was very difficult to control with a weeder. By the fall of 1916, while a visible improve- ment had been made, the results obtained were far from what had been hoped for. Late in February, 1917, the field was disked and partial-. Fig. 10.—Field H, June, 1916; few Johnson plants appearing. ly plowed, and during the remainder of the season a weeder was used quite frequently. In September the land was plowed dry preparatory to seeding to grains later in the year. At the present time, November, 1917, the growth of Johnson grass is not very noticeable although there. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original University of Arizona. Agricultural Experiment Station. Tucson : Agricultural Experiment Station, University of Arizona
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Keywords: ., bookauth, bookcentury1800, bookdecade1890, booksubjectagriculture
