Cotton Responses to starters

Information about Cotton Responses to starters

Published on January 24, 2008

Author: Viola

Source: authorstream.com

Content

Cotton Response to Starter Fertilizers:  Cotton Response to Starter Fertilizers Cotton Response to Starter Fertilization from Better Crops 1993/94 78(1):9-11:  Cotton Response to Starter Fertilization from Better Crops 1993/94 78(1):9-11 Significant increases in lint yields were observed in 13 of 18 locations in Mississippi in three years of field trials In Alabama, surface-banding N-P starter significantly increased yield at one of 16 field locations over a two-year period In North Carolina, 2x2-inch band application of starter significantly increased yield at four locations during a two-year period. No-Till Cotton Response to Starter Fertilizer in AL Yields are only for years with significant yield response (data from Touchton et al., 1986, and unpublished data):  No-Till Cotton Response to Starter Fertilizer in AL Yields are only for years with significant yield response (data from Touchton et al., 1986, and unpublished data) Seed Cotton Yield, lb/A Location No starter Starter Increase w/starter Tenn. Valley (2 of 3 years) 2415 2795 380 Wiregrass (2 of 3 years) 3500 4040 540 Monroeville (1 year) 1600 2160 560 Brewton (1 year) 1935 2003 68 Source: C. C. Mitchell Auburn Univ. http://www.aces.edu/department/ipm/sct2.htm Seedcotton Yield Response to Starter Fertilizers North Alabama. 1991-93 Average. Burmester, Patterson & Reeves. 1995 Beltwide Cotton Conference Proceedings. pages 1310-1313:  Seedcotton Yield Response to Starter Fertilizers North Alabama. 1991-93 Average. Burmester, Patterson & Reeves. 1995 Beltwide Cotton Conference Proceedings. pages 1310-1313 90 lb N/A; 2/3 preplant, 1/3 @ squaring Surface band = 4-inch band over row @ planting 2 x 2 = 2 inches to side and below seed @ planting Seedcotton, lb/A N-P2O5 , lb/A Cotton Response to Starter Fertilizer on a Soil w/wo Cattle Grazing of the Winter Wheat Cover Crop -(AL) Mullins & Burmester. 1997. Commun. Soil Sci. Plant Anal. 28(9/10):739-746:  Cotton Response to Starter Fertilizer on a Soil w/wo Cattle Grazing of the Winter Wheat Cover Crop -(AL) Mullins & Burmester. 1997. Commun. Soil Sci. Plant Anal. 28(9/10):739-746 Seedcotton yield, lb/A Years UG= ungrazed wheat,; G= grazed wheat cover crop Mehlich 1 soil test P rated medium to high Starter= 150 lb/A of 15-50-0 Starter placed 2 inches below and 2 inches to side of seed Treatment Lint Yield (lbs/acre) 10-34-0 @ 10 gpa (2 X 2) 1480 a 10-34-0 + Asset-RTU (2 X 2) 1519 a !0-34-0 (2 X 2) + Asset-RTU (in furrow) 1461 a Asset-RTU (in furrow) 1421 b Untreated 1438 b :  Treatment Lint Yield (lbs/acre) 10-34-0 @ 10 gpa (2 X 2) 1480 a 10-34-0 + Asset-RTU (2 X 2) 1519 a !0-34-0 (2 X 2) + Asset-RTU (in furrow) 1461 a Asset-RTU (in furrow) 1421 b Untreated 1438 b http://www.griffin.peachnet.edu/caes/cotton/Asset.html Cotton Response to Starter in Georgia C. Bednarz 1998 600 lb/A 3-9-18 preplant, 77 lb/A 28-0-0-5 sidedressed Cotton Response to Starter Fertilizer in Farmer Fields -LA Kovar, Funderburg and Hutchinson. 1993/94. Better Crops 78(1):9-11 :  Cotton Response to Starter Fertilizer in Farmer Fields -LA Kovar, Funderburg and Hutchinson. 1993/94. Better Crops 78(1):9-11 Cotton lint yield, lb/A Year Soil Check Starter Difference, +or(-) 1990 Commerce SiL 1255 1400 145* 1991 Commerce SiL 1184 1191 7 1991 Necessity SiL 1503 1586 83* 1992 Loring SiL 878 889 11 1992 Caspiana SiL 922 911 (11) 1992 Commerce SiL 999 1040 41 1992 Sharkey C 515 697 182* 1992 Norwood SiL 734 837 103** 1993 Rilla SiL 941 1174 233** MEAN 992 1081 89 Starter = 1.5 gpa 11-37-0 in-furrow @ planting * signif @ 0.05 level ** signif. @ 0.01 level Cotton Response to Starter Fertilizer in Farmer Fields -LA Kovar, Funderburg and Hutchinson. 1993/94. Better Crops 78(1):9-11 :  Cotton Response to Starter Fertilizer in Farmer Fields -LA Kovar, Funderburg and Hutchinson. 1993/94. Better Crops 78(1):9-11 Cotton lint yield, lb/A Year Soil Check Starter Difference, +or(-) 1990 Commerce SiL 1255 1443 188** 1990 Norwood SiL 823 895 72 1990 Loring SiL 1045 1032 (13) 1991 Commerce SiL 949 1073 124** 1992 Commerce SiL 999 1144 145 1992 Loring SiL 878 957 79* 1993 Loring SiL 860 969 109* MEAN 999 1106 107 Starter = 3-inch surface band 11-37-0 @ 12 gpa @ planting * signif @ 0.05 level ** signif. @ 0.01 level Influence of In-Furrow Starter Fertilizer on Cotton Yield in Portageville, Missouri Phipps et al. 1997. Proc. Beltwide Cotton Conference 2:1476-1479:  Influence of In-Furrow Starter Fertilizer on Cotton Yield in Portageville, Missouri Phipps et al. 1997. Proc. Beltwide Cotton Conference 2:1476-1479 1994 1995 1996 Planting Year and Date in May No significant response to 11-37-0 A 10 gpa Lint , lb/A Starter Fertilizer Response by Conventional and No-Till Cotton on a Gigger Silt Loam in Louisiana Kovar, Funderburg and Hutchinson. 1993/94. Better Crops 78(1):9-11 :  Starter Fertilizer Response by Conventional and No-Till Cotton on a Gigger Silt Loam in Louisiana Kovar, Funderburg and Hutchinson. 1993/94. Better Crops 78(1):9-11 CT= conventional till; NT=No-till Lint, lb/A No starter used All starter plots received 80-40-60 In-furrow Gallons/A of 11-37-0 Surface Banded 3-Year Average Starter Response by No-Till Cotton in Louisiana and Tennessee Hutchinson and Howard. 1997. J. Plant Nutrition 20(7&8):975-986. :  3-Year Average Starter Response by No-Till Cotton in Louisiana and Tennessee Hutchinson and Howard. 1997. J. Plant Nutrition 20(7&8):975-986. Lint, lb/A No starter used All starter plots received 80-40-60 No significant treatment differences Soil test P levels rated high at both sites In-furrow Gallons/A of 11-37-0 Surface Banded 3-Year Average Starter Response by Conventional Till Cotton in Louisiana and Tennessee Hutchinson and Howard. 1997. J. Plant Nutrition 20(7&8):975-986. :  3-Year Average Starter Response by Conventional Till Cotton in Louisiana and Tennessee Hutchinson and Howard. 1997. J. Plant Nutrition 20(7&8):975-986. Lint, lb/A No starter used All starter plots received 80-40-60 (N-P2O5-K2O) No significant differences LSD (0.05) = 27 lb/A Soil test P levels rated high at both sites No-Till Cotton Response to Starter Fertilizer in TN 4-Yr. Ave. (1994-97) Loring silt loam Howard et al. 1999. J. Cotton Science 3:126-131:  No-Till Cotton Response to Starter Fertilizer in TN 4-Yr. Ave. (1994-97) Loring silt loam Howard et al. 1999. J. Cotton Science 3:126-131 Lint, lb/A APP = 11-37-0, CN=Calcium nitrate; IF=In-furrow, SB= 4-inch surface band Gallons /A of Starter Fertilizer, Source, Application Method Each treatment received a total of 80- 40-60 lb/A (N-P2O5-K2O), which included the starter Mehlich 1 soil test P=58 lb/A ,K=198 lb/A General Summary of Cotton Response to Starter Fertilizer Application:  General Summary of Cotton Response to Starter Fertilizer Application Cotton response to starter fertilizers containing N and/or P has been less consistent than response by corn Significant yield increases may be observed at some locations in some years Farmers should attempt to provide optimum soil pH, P and K levels through broadcast fertilization Starter fertilizers are not a substitute for recommended broadcast applications of nutrients Any starter use should be considered as supplemental to a balanced fertilization program Considerations and Precautions on Starter Fertilizer Applications for Cotton:  Considerations and Precautions on Starter Fertilizer Applications for Cotton Starter systems used for cotton in the South are: 2 x 2 inch below and to the side of the seed furrow 3 to 4-inch band over the planted row in-furrow with the seed Researchers suggest no more than 1.5 gpa of 10-34-0 or 11-37-0 in-furrow for cotton, to avoid seedling injury. Rates of these products at 2 to 4 gpa or more have sometimes resulted in cotton seedling injury and stand reduction In-furrow application of more than 10 to 12 lb/A of N, or N plus K2O, could result in seedling injury Do not use urea-containing N sources or sources that form ammonia (such as diammonium phosphate (DAP)) in direct contact with seed

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