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Gene A. Giacomelli and William J. Roberts

The diversity of coverings for the greenhouse and other plant production structures has increased dramatically during the past 4 decades. This has resulted from the availability of new types of covering materials and enhancements of previously existing materials, as well as the demands for technological improvements within the expanding controlled environment agricultural industry. The types of coverings currently available are dominated by plastics. These range from traditional glass to the recent advent of polymer plastics, such as thin films or multilayer rigid thermoset plastic panels. Available enhancements such as ultraviolet radiation (UV) degradation inhibitors, infrared radiation (IR) absorbency, and anti-condensation drip surfaces, as well as their physical and spectral properties are discussed. The selection of specific covering alternatives has implications for the greenhouse superstructure and its enclosed crop production system.

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Felipe Barrera Sánchez, Larissa Pereira Ribeiro, Mayara Fávero Cotrim, Carlos Antonio da Silva Junior, Leonardo Lopes Bhering, and Paulo Eduardo Teodoro

: number of clusters per plant (CP), number of flowers per cluster (FLC), number of fruits per cluster (FRC), and number of fruits per plant (FRP). At harvesting, the traits evaluated were fruit weight (FRW, g), evaluated by weighing harvested fruits and

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Yuyao Kong, Ajay Nemali, Cary Mitchell, and Krishna Nemali

; Fluence Bioengineering, Austin, TX), FRP (Fluence Razr Physiospec Purple; Fluence Bioengineering), TGB (TG1A Bulbs; TotalGrow, Holland, MI), and LT8 (2GT8 4 32 A12 1/4; Lithonia Lighting, Conyers, GA). In the FRP fixture, a red diode with a peak emission

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Job Teixeira de Oliveira, Rubens Alves de Oliveira, Domingos Sarvio Magalhães Valente, Isabela da Silva Ribeiro, and Paulo Eduardo Teodoro

conformed to the spherical model, whereas GY, EC, RP1, RP3, MRP, and WPB adjusted to the exponential model. The values of the cross-semivariograms, GY = f(EC) and GY = f(RP3), were adjusted to the spherical model, whereas all others were adjusted to the

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Tim D. Davis and Purwiyatno Hariyadi

/y4632e00.htm > Piay, S.S. Tyasdjaja, A. Ermawati, Y. Hantoro, F.R.P. 2010 Farming and postharvest of chilli pepper ( Capsicum annum L.) [Budidaya dan Pasca Panen Cabai, in Indonesian language]. Research Report, Agency of Agricultural Research and

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Andrea C. Landaverde, Jacob H. Shreckhise, and James E. Altland

remained stable for the duration of the experiment (30 d) when stored at RF or FZ; filtered RF was an exception, with a 5% higher PO 4 3− -P concentration than the control. In other studies, refrigeration preserved filtered reactive phosphorus (FRP) in

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Yongfeng Yang, Zhixiao Yang, Shizhou Yu, and Hongli Chen

. DeAngelis, K.M. Jones, E.E. Stewart, A. Firestone, M.K. Condron, L.M. 2011 Effects of selected root exudate components on soil bacterial communities FEMS Microbiol. Ecol. 77 3 600 610 Sison, M.L.Q. Magbanua, J.P.V. Bugante, E.C. Torres, F.G. Nayve, F.R.P