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Published byThomasina Stevens Modified over 8 years ago
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To evaluate the efficacy of adding Oust Extra to site prep applications for HWC the following growing season
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South Carolina Mississippi Louisiana
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Previous stand = pine-hardwood Harvested 2003/2004 Numerous hardwood seedlings/saplings per acre (2000- 6000 TPA) Established herbaceous cover
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Treatments applied early September, 2004 Aerial simulation 10 gpa
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Table 1. List of treatments in 2004 DuPont site prep study - MS Trmt. No.Product (Ounces/Acre) ______________________________________________________ 1 Arsenal AC(16) + OE 1 (4) + NIS(16) 2 2Arsenal AC(24) + OE(4) +NIS(16) 3 Arsenal AC(16) + OE(4) + Accord SP (32) +NIS(16) 4Arsenal AC(16) + OE(4) + Accord SP (64) +NIS(16) 5Arsenal AC (24) + OE(4) + Accord SP(32) +NIS(16) 6Arsenal AC(16) + OE(4) + Accord SP (64) +NIS(16) 7 Arsenal AC (16) + OE(3) + NIS(16) +NIS(16) 8 Arsenal AC(24) + OE(3) + NIS(16) +NIS(16) 9Arsenal AC(16) + OE(3) + Accord SP(32) + NIS(16) 10Arsenal AC(16) + OE(3) + Accord SP(64) + NIS(16) 11Arsenal AC(24) + OE(3) + Accord SP(32) + NIS(16) 12Arsenal AC(24) + OE(3) + Accord SP(64) + NIS(16) 13One Step (128) + OE(3) 14One Step (128) + OE(4) 15Arsenal AC(12) + OE(3) + Accord SP (192) 16Arsenal AC (12) + OE(4) + Accord SP(192) 17Untreated Check 1 OE = Oust Extra, 2 NIS = 90% nonionic surfactant (Timberland 90)
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17 Treatments 3 reps (SC and LA) or 4 reps (MS) RCB
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6 WAT Brownout Grass, broadleaf, vine cover in May, June, July, August 2005 Hardwood control - September, 2005
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Table 2. Average percent grass cover by treatment and time of observation in 2004 DuPont site prep study- MS (Avg. all reps) _______________________________________________________________ Time of Observation Trt. No.MayJune July August ---------------------------------------Percent-------------------------------- 113.0ab117.7b24.2ab23.7a 20.5a2.0a5.0a26.2a 30.5a1.0a9.7a25.0a 42.5a5.7a22.5ab45.0b 50.0a5.4a7.5a20.0a 60.0a5.4a10.0a31.2a 78.0a3.5a5.7a22.5a 83.0a3.7a12.5a23.7a 90.5a2.0a6.5a21.2a 100.0a3.2a13.0a42.5b 111.7a17.7b17.2a37.5b 121.3a7.7a17.0a33.7ab 130.7a6.2a13.7a27.5a 1.0a0.0a3.5a12.5a38.7b 150.3a5.0a15.0a16.7a 160.3a2.0a6.5a36.2b 1752.5c45.0c37.5b38.7b 1 Values in a column followed by the same letter do not differ at
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MAY
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JUNE
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AUGUST
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Table 3. Average percent broadleaf cover by treatment and time of observation in 2004 DuPont site prep study - MS _______________________________________________________________ Time of Observation Trt. No.MayJune July August ---------------------------------------Percent-------------------------------- 10.0a 1 3.5a12.0a15.0a 21.2a0.7a5.0a 7.0a 30.7a5.5a12.2a12.7a 40.5a7.0a20.0b36.2c 50.5a3.7a11.7a16.2a 60.2a13.7ab15.0a25.0b 70.2a0.7a3.0a 6.2a 81.0a5.7a7.2a17.5a 91.2a5.5a16.7a18.7a 101.2a8.2a25.0b35.0b 111.0a13.7ab36.5c47.5d 121.5a30.3c41.2c57.5d 131.5a29.2c41.2c57.5d 140.7a8.0a20.0b28.7b 151.0a31.0c40.0c46.2d 160.7a5.7a7.0a20.0ab 1710.0a17.5b17.5ab15.0a 1 Values in a column followed by the same letter do not differ at
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Table 5. Average percent bare ground cover by treatment and time of observation in 2004 DuPont site prep study - TX (avg. all reps) _______________________________________________________________ Time of Observation Trt. No. MayJune July August September -------------------------------------------------Percent-------------------------------------- 1 Values in a column followed by the same letter do not differ at 173a 1 57d40ab17cdef8cd 272a60d38ab20bcdef9bcd 383a73abcd58a37abc27ab 491a83ab60a48a40a 572a65bcd45ab32abcd25abc 673a65bcd43ab35abc25abc 783a72abcd45ab13def8cd 878a67abcd38ab18bcdef11bcd 980a62cd25b11ef5d 1090a82abc43ab20bcdef13bcd 1189a83ab45ab23bcde19bcd 1273a65bcd43ab25bcde17bcd 1388a77abcd57a27bcde15bcd 1490a87a50ab32abcd23abc 1582a62cd38ab27bcde10bcd 1672a63bcd45ab38ab27ab 1718b5e2c2f2d
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MAY
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JUNE
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AUGUST
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Table 6. Average percent vine cover by treatment and time of observation in 2004 DuPont site prep study- MS (Avg. all reps) _______________________________________________________________ Time of Observation Trt. No.MayJune July August ---------------------------------------Percent-------------------------------- 120.0b33.7b48.7c50.0c 210.2a10.5a13.7a21.7b 38.0a8.7a11.2a21.2b 45.0a8.7a15.5ab 51.5a13.5a16.7ab30.0b 64.5a6.2a17.5ab23.7b 725.2b15.7a25.5b26.2b 85.2a7.0a24.5b 91.7a3.2a11.5a25.0b 106.0a2.0a3.7a9.7a 111.0a9.0a12.5a13.7a 120.5a1.0a1.7a9.7a 130.5a1.2a2.2a6.2a 141.0a1.2a 4.0a 150.71.2a1.7a 3.0a 160.7a1.7a 4.7a 1722.5b25.0b33.7b35.0b 1 Values in a column followed by the same letter do not differ at
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Table 7. Average percent woody plant cover by treatment and time of observation in 2004 DuPont site prep study- MS (Avg. all reps) _______________________________________________________________ Time of Observation Trt. No.MayJune July August ---------------------------------------Percent-------------------------------- 14.2a5.2a 6.5a 20.5a2.0a3.5a5.0a 30.0a1.7a4.0a6.0a 40.0a2.5a4.5a5.5a 50.2a3.0a5.2a6.5a 61.5a1.2a5.2a6.0a 71.7a3.2a5.2a6.0a 80.5a1.5a5.2a5.5a 91.0a2.5a5.0a7.2a 101.0a3.5a4.2a6.2a 111.7a 3.0a6.0a 120.2a0.5a1.5a5.5a 130.2a3.0a4.5a5.0a 1.0a0.5a2.0a 5.5a 150.0a0.5a2.0a5.0a 160.7a1.2a2.0a4.5a 1765.0b70.0b75.0b75.0 1 Values in a column followed by the same letter do not differ at
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Table 8. Average percent reduction of principal woody species in 2004 DuPont site prep study- MS (Avg. all reps) ______________________________________________________________ Species 1 Trt. No. POO REO HIC REM TOT ------------------------------------------Percent------------------------------------------------- 198.0a 2 59.3c+50.0d 3 94.4a76.9b 298.2a93.8a58.8b82.3b85.4a 398.7a79.5ab54.7b87.7a85.7a 499.5a84.7a72.0ab83.3ab89.3a 5100.0a82.2a27.0c89.6a82.8a 6100.0a89.7a78.5a93.5a88.9a 797.7a94.7a57.8b83.7ab83.9a 898.0a86.7a60.0b97.8a94.3a 9100.0a74.7b44.4c76.6b82.7a 10100.0a80.8ab51.3b80.1b81.8ab 11100.0a85.7a+42.9d84.7ab84.0a 12100.0a91.5a73.8a92.5a91.8a 1397.0a95.1a66.7b97.2a93.5a 1498.1a90.9a86.9a95.3a95.8a 1593.8a87.7a73.9a93.6a89.6a 1695.3a94.0a77.8a98.7a94.6a 17+70.5b+8.0d37.2c+70.2c+36.5c 1 POO = post oak, REDO= red oak, HIC = hickory, REM = red maple, TOT = all tree species; 2 values in a column followed by the same letter do not differ at = 0.05; 3 plus sign = an increase in stems
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Table 10. Average percent woody cover and percent reduction of woody species 1 YAT in 2004 DuPont site prep study-LA (Avg. all reps) ______________________________________________________________ Woody Species 1 Treatment SWG MISC ALL COVER --------------------------------Percent---------------------------------- ------ 1 SWG = sweetgum, MISC = oak, yaupon, red maple; 2 values in a column followed by the same letter do not differ at = 0.05; 3 plus sign = an increase in stems AR+OE+AC (12+3+192)100.0a 2 84.3ab77.2a16b AR+OE+AC (12+4+192)95.8a68.3abc53.4ab14bc AR+OE+AC (16+3+32)100.0a86.2ab86.2a12bcd AR+OE+AC (16+4+32)88.9a73.7abc45.6abc2d AR+OE+AC (16+3+64)92.6a86.3ab76.6a4cd AR+OE+AC (16+4+64)80.6a81.5abc64.7ab3d AR+OE+AC (24+3+32)90.0a85.2ab58.9ab7bcd AR+OE+AC24+4+32)100.0a78.8abc67.2ab2d AR+OE+AC (24+3+64)94.4a62.2bc32.2bc7bcd AR+OE+AC (24+4+64)96.7a85.7ab69.9ab3d AR+OE (16+3)74.8a100.0a55.6ab2d AR+OE (16+4)96.3a87.7ab75.5ab4d AR+OE (24+3)77.8a87.6ab69.6ab3d AR+OE (24+4)100.0a69.9abc66.8ab2d AR+OE (128+3)100.0a89.7ab81.6a1d AR+OE (128+4)100.0a78.6abc72.6ab2d Check16.7b49.1c10.6c40a
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