Progress Report* Series No. 31 February 1947 AGRICULTURAL EXPERIMENT STATION of The Alabama Polytechnic Institute, Auburn, Ala. * * * * * * M. J. Funchess, Director . . . . . TIME of PLANTING COTTON in ALABAMA Cotton planted a week to 10 days earlier than customary produces higher yields than cotton planted later. This conclusion is based on results from a number of years experi ments with planting dates for cotton carried on at the Tennessee Valley and Sand NM.ountain substations, and at the Aliceville Lafayette Monroe ville, and Prattville experiment fields. Acc:rding to results from these experiments most farmers could increase their cotton yields by planting a week to 10 days earlier than they usually do. On most soils cotton planting should be completed by or The middle dates in these time-of-planting experiments are assumed to be near the usual or customary cotton planting time of the areas in which the tests are located. Planting earlier resulted in higher yields of seed cotton than those from cotton planted at the usual time at five"'of the six locations. Late planted cotton sometimes produces fair to good yields. However this is an exception rather than a rule For example the yield of cotton planted at Aliceville on May 10 equalled that planted on Apiril 10 only once in 9 years, In 2 of the 9 years the late-planted cotton produced less than 10 per cent as much as the early. planted. At the Lafayette Field late planted cotton produced equally as well as the early planted crop only 2 out of 8 years, on the other hand in 2 other years the yield was less than one half that of the early planted cotton Thus it may be seei that the yields from late planting are not as dependable *Formerly Mimeograph Series, Time of. Planting Cotton in Alabama LOCATION YEARS ! AVERAGE PLANTING AVERAGE YIELD SEED IDATE COTTON PER ACRE Pounds Tennessee Valley Substation 1939-46* April 11 1,710 (Usual planting time, last 1939-46* April 27 1,689 week in April) 1939-46* May 14 1,38 Sand Mountain Substation 1939-42 April 16 1,992 (Usual planting time, last 1939-42 April 30 1,696 week in April) 1939-.42 May 13 1,597 Aliceville Field 1939-46 March 31 1,624 1938-46 April 10 1,658 (Usual planting time, last 19383-6 April 20 1,547 10 days of April) 1938-46- April 30 1,448 1938-46 May 10 1, 036 1938-46 May 20 745 Lafayette Field 1939-46 April 2 1,187 (Usual planting time, mid- 1939-46 April 15 1,126 Apri) 1939-46 May I 887 Monroeville Field 1939-43 & 46** March 26 816 (Usual planting time, 1939-43 & 46** April 9 791 early April) 1939-43 & 46** April 28 522 Prattv il le Field 1939-46 . arch 27 1,193 (Usual planting'time, 1939-4 6 April 10 1,206 second week of April 1939-46 April 29 1,095 * Test incomplete in 1942, result **No data in 1944 and 1945, test omitted. destroyed by hail both years. 1 Experiment conducted byH. R. Benford, F. E. Bertram, R( C. Christopher, Richardson, and Fred Stewart of the Experiment Station staff. S. E. Gissendanner, J. W. Tests at Tennessee Valley, Sand Mountain, Monroeville, and Prattville planted and used in cooperative planter tests by I. F. Reed, Division of Agricultural Engineering, :B.P.I.S. and E., U. S. D A.