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G.D. Hoyt and J.F. Walgenbach

Conservation tillage systems provide optimum conditions to reduce soil erosion and increase surface soil organic matter. This experiment was established with the long-term goal of developing conservation tillage systems that use either chemical inputs to produce vegetables and control pests, or legume cover crops, biological pesticides, and tillage to provide plant nutrition and control pests. The experiment consisted of cabbage (Brassica oleracea var. L. Capitata Group) grown by traditional-tillage (TT) or strip-tillage (ST) culture using either chemical or organic production methods for pest control. Cabbage heads were heavier with TT than with ST for the chemical production system. Although weed biomass was significantly higher with organic methods, there was a poor relationship between weed biomass at harvest and cabbage head weight. The lack of differences in lepidopterous pest damage suggests that the conservation tillage systems examined likely would not affect lepidopterous pest management systems using biological insecticides. Within tillage treatments, the organic production system resulted in less Alternaria infection than did the chemical production system. Since no fungicides were applied on any treatment, lower disease ratings in the organic production system may have been the result of reduced soil contact of the cabbage leaves from the increased soil coverage by the weed and intercropped legume canopy.

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Xiaotao Ding, Liyao Yu, Yuping Jiang, Shaojun Yang, Lizhong He, Qiang Zhou, Jizhu Yu, and Danfeng Huang

productivity along with quality and enriching crop management practices. In crop production systems, the maximum photosynthetic capacity is usually difficult to achieve because of physiological and environmental limitations, such as varied leaf maturity, light

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Suzette P. Galinato and Carol A. Miles

). The objectives of this study were to 1) compare the economic potential of growing lettuce and tomato in high tunnel and open-field production systems and 2) identify the main factors that affect the profitability of each crop within each production

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Zheng Wang, Mark Williams, Krista Jacobsen, and Timothy Coolong

-row cultivation. There is a growing interest in strip tillage in vegetable crops due to the potential for these systems to improve soil quality. Previous research suggests that the success of strip tillage depends on the type of crop grown, production system, soil

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Russell W. Wallace, Annette L. Wszelaki, Carol A. Miles, Jeremy S. Cowan, Jeffrey Martin, Jonathan Roozen, Babette Gundersen, and Debra A. Inglis

open-field production systems located under three contrasting regions within the United States where high tunnel lettuce production has until now been less common. Materials and methods The experimental field trials were conducted during late Winter and

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Olya Rysin, Amanda McWhirt, Gina Fernandez, Frank J. Louws, and Michelle Schroeder-Moreno

Maintaining soil quality continues to be a key challenge to the sustainability of strawberry plasticulture production systems. This challenge to soil quality is particularly strong in the southeastern United States where warm temperatures can lead

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Jianyu Li, Xin Zhao, Gabriel Maltais-Landry, and Bodh R. Paudel

cycle remains a major challenge in organic production systems ( Gaskell and Smith, 2007 ), and this could be exacerbated in Florida, where soils at most production sites have a high sand content resulting in poor water holding capacity and cation

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James L. Green, James A. Robbins, and Bruce A. Briggs

A closed, insulated, pallet production system (CIPPS) has been designed to meet current challenges: 1) Elimination of production related pollution. 2) Reduction and conservation of resources. 3) Improvement of working conditions. 4) Alternatives to pesticides. 5) Prevention of temperature extremes and rapid temperature fluctuations in the plant environment. Biological feasibility of CIPPS was established in research on pathogen epidemiology, water and fertilize efficiency, plant growth and development in CIPPS. Water and fertilizer ion movement-removal in the closed system was plant-driven in response to growth and transpiration; water and fertilizer use in CIPS was 10% of that applied to open containers. Growth of 28 plant species ranging from herbaceous annuals to woody perennials was greater in CIPPS than in control, individual containers. Phytophthora cinnamomi did not spread from inoculated to noninoculated plants within CIPPS. Inoculation with nonpathogenic bacteria increased plant growth (gfw) in CIPPS but not in open plant containers.

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Dewayne L. Ingram and Charles R. Hall

The costs of producing ornamental plant species vary among alternative nursery production systems because of differences in planting procedures, growing practices (fertilizing, irrigating, pruning, etc.), and harvesting activities. Common systems

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D.M. Glenn, T. Tworkoski, R. Scorza, and S.S. Miller

; Tworkoski and Glenn, 2010 ), subsequently reducing overall yield. A third approach to develop high-density peach production systems is the use of peach cultivars with tree architectures that suit high planting densities. Scorza (1984 , 1988) and Scorza