caa a22 4500 388054093 CHVBK 20180307125101.0 cr unu---uuuuu 161130e199803 xx s 000 0 eng 10.1017/S088918930000758X doi S088918930000758X pii (NATIONALLICENCE)cambridge-10.1017/S088918930000758X Reduced chemical input cropping systems in the Southeastern United States: III. Economic analysis [Elektronische Daten] This study evaluated the profitability of several cropping systems during a 10-year period of an experiment comparing rotations and levels of purchased inputs. Continuous corn or sorghum, corn/wheat-soybean (2-year), and corn/wheat-soybean/corn/clover hay (4-year) were managed with recommended fertilizer and pesticide rates and no-till planting (C) or with N from legumes, conventional tillage, and cultivation for weed control (L). Medium input management (M: medium rate of N and banded herbicides) was included during years 5 through 10. Generally, corn was the least profitable crop, regardless of input level or type of rotation. Rotating crops improved profit more than did adding inputs to continuous corn. With L, average annual profit was: continuous corn, -$64/ha; 2-year rotation, $135/ha; and 4-year rotation, $158/ha. With C, the 2-year rotation increased profit to $165/ha from -$119/ha with continuous corn. The increased profit with rotations was due to greater profits from wheat, soybean, and hay offsetting low or negative profit from corn. Sorghum (grown only in monoculture) was more profitable with L ($34/ha) than with C (-$20/ha). During the 6 years when all input levels were compared, the order of average profit was M>L>C with continuous corn. Generally, profit was not increased by M compared with L in the 2-and 4-year rotations. With L, the cost of weed control was 20% of that for C with corn and 44% with soybean. Cost of N from fertilizer was $0.66/kg, but cost of N from crimson clover (seed and planting costs) averaged $0.92/kg when clover was drilled, $1.27/kg when aerially seeded, and $0.16/kg when naturally reseeded. Copyright © Cambridge University Press 1998 banded herbicides nationallicence green manure nationallicence corn nationallicence wheat nationallicence soybean nationallicence clover nationallicence no-till nationallicence conventional tillage nationallicence N fertilizer nationallicence rotations nationallicence King Larry D. Professor, Department of Soil Science, North Carolina State University, Raleigh, NC 27695-7619 Hoag Dana L. Professor, Department of Agricultural and Resource Economics, Colorado State University, Fort Collins, CO 80523. American Journal of Alternative Agriculture Cambridge University Press 13/1(1998-03), 12-27 0889-1893 13:1<12 1998 13 AJA https://doi.org/10.1017/S088918930000758X text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1017/S088918930000758X text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- King Larry D. Professor, Department of Soil Science, North Carolina State University, Raleigh, NC 27695-7619 NATIONALLICENCE 700 1- Hoag Dana L. Professor, Department of Agricultural and Resource Economics, Colorado State University, Fort Collins, CO 80523 NATIONALLICENCE 773 0- American Journal of Alternative Agriculture Cambridge University Press 13/1(1998-03), 12-27 0889-1893 13:1<12 1998 13 AJA CC0 http://creativecommons.org/publicdomain/zero/1.0 nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-cambridge