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Alyssa H. Cho, Alan W. Hodges, and Carlene A. Chase

Partial budget analyses of five summer fallow treatments in Florida preceding a cash crop of summer squash (Cucurbita pepo) were conducted. The five treatments were sunn hemp (Crotalaria juncea), velvet bean (Mucuna deeringiana), cowpea (Vigna unguiculata), sorghum-sudangrass (Sorghum bicolor × S. bicolor var. sudanense), and tillage. Costs were estimated for each summer fallow treatment, including the cost of seed, inoculant, implementation, management, and termination. Benefits were calculated in terms of contributions to the following cash crop of summer squash in the form of biologically fixed nitrogen and reduced weed pressure. Results showed that total production costs were minimized by cover crops, even though implementation costs were higher than for tillage.

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Olha Sydorovych, Charles D. Safley, Rob M. Welker, Lisa M. Ferguson, David W. Monks, Katie Jennings, Jim Driver, and Frank J. Louws

preplant fumigation with MeBr in a plasticulture production system. Second, we evaluated the economic feasibility of the alternatives to MeBr using a partial budget methodology. Partial budget methodology Partial budget analysis was used to evaluate the

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Daniel C. Brainard and D. Corey Noyes

for each treatment was estimated using partial budget analysis. Gross returns were calculated as the weight of defect-free carrots times the price for defect free carrots plus the weight of cull carrots times the price for cull carrots. Net returns

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Ravneet K. Sandhu, Nathan S. Boyd, Shaun Sharpe, Zhengfei Guan, Qi Qiu, Tianyuan Luo, and Shinsuke Agehara

harvest date to ensure the same number of pickings for each treatment. Partial budget analysis Yield prices. Daily prices collected from the U.S. Department of Agriculture (USDA) Agricultural Marketing Service were used to calculate strawberry and eggplant

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Olha Sydorovych, Charles D. Safley, Lisa M. Ferguson, E. Barclay Poling, Gina E. Fernandez, Phil M. Brannen, David M. Monks, and Frank J. Louws

Partial budget analysis was used to evaluate soil treatment alternatives to methyl bromide (MeBr) based on their cost-effectiveness in the production of strawberries (Fragaria ×ananassa). The analysis was conducted for two geographical areas: the piedmont and coastal plain area (including North Carolina and Georgia) and the mountain area of western North Carolina, based on 7 years of field test data. The fumigation alternatives evaluated were Telone-C35 (1,3-dichloropropene 61.1% + chloropicrin 34.7%), Telone II (1,3-dichloropropene 94%), chloropicrin (Chlor-o-pic 99% and TriClor EC), InLine (1,3-dichloropropene 60.8% + chloropicrin 33.3%), and metam sodium (Vapam or Sectagon 42, 42% sodium methyldithiocarbamate). The MeBr formulation was 67% MeBr and 33% chloropicrin (Terr-O-Gas) with the exception of the earlier trials where a 98:2 ratio was used. In the piedmont and coastal plain area, the soil treated with chloropicrin showed the best results with an additional return of $1670/acre relative to MeBr, followed by Telone-C35 with an additional return of $277/acre. The projected return associated with shank-applied metam sodium was approximately equal to the estimated return a grower would receive when applying MeBr. Fumigating with drip-applied metam sodium, InLine, and Telone II as well as the nonfumigated soil treatment resulted in projected losses of $2182, $2233, $4179, and $6450 per acre, respectively, relative to MeBr. In the mountain area, all of the alternatives resulted in a projected increase in net returns relative to MeBr. The largest projected increase was $1320/acre for the InLine treatment, while the added returns for the TriClor and Telone-C35 applications were estimated to be $509 and $339 per acre, respectively. The drip-applied metam sodium application resulted in an additional return of $40/acre, and the added revenue for the nonfumigated soil treatment was $24/acre more than MeBr treatment. Although technical issues currently associated with some of the alternatives may persist, results indicate that there are economically feasible fumigation alternatives to MeBr in the production of strawberries in the southeastern U.S.

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Lucas G. Paranhos, Charles E. Barrett, Lincoln Zotarelli, Tatiana Borisova, Rebecca Darnell, and Kati Migliaccio

) beginning at day 240 of the year (5 Sept.) and extending to the day 360 (26 Dec.). The Florida marketable yield for bare ground production was estimated using the USDA database for 2011–14 ( USDA, 2015 ). Economic analyses. A partial budget analysis was used

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Desire Djidonou, Zhifeng Gao, and Xin Zhao

.95 (2010) and $11.95 (2011) per 25-lb carton during the harvest periods [ U.S. Department of Agriculture (USDA), 2011) ] were used in calculating the gross returns (crop value) of grafted and nongrafted tomato production. Partial budget analysis of grafted

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Charles E. Barrett, Xin Zhao, and Alan W. Hodges

then averaged for each treatment in each block (five plants per plot in the organic fields; three plants per plot in the transitional field). Economic analyses. Sources and prices for materials and labor used to perform the partial budget analysis were

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Giuseppe Colla, Mariateresa Cardarelli, Paolo Bonini, and Youssef Rouphael

budget analysis. Partial budget analysis was performed to evaluate the economic advantage that may accrue to growers applying the biostimulants. The economic procedure used in the present work has been described by Djidonou et al. (2013) . For each

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Bielinski M. Santos and Persio R. Rodriguez

). Therefore, other distances were eliminated from further economic comparison. Partial budget analysis reflected that the 0.25 m spacing had a MRR of 13% better than with 0.35 m, indicating that potato producers would earn $0.13 extra for each dollar of net