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Miguel Urrestarazu, Isidro Morales, Tommaso La Malfa, Ruben Checa, Anderson F. Wamser, and Juan E. Álvaro

volume, the roots can access better physicochemical conditions that are distributed unevenly, depending on the fertigation method ( De Rijk and Schrevens, 1998 ; Sonneveld and Voogt, 1990 ). The aim of the present study was to evaluate the effect of time

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Mary Ann D. Maquilan, Dominick C. Padilla, Donald W. Dickson, and Bala Rathinasabapathi

., 1998 ; Pegard et al., 2005 ). The nature of such an impediment in ‘UFRJ107(6)A3’ could be the presence of mechanical or biochemical barriers to RKN and needs further investigation. Table 3. Number of M. incognita race 3 second-stage juveniles (J2s

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Ryan J. Hayes and Edward J. Ryder

congruity backcrossing ( Haghighi and Ascher, 1988 ; Mejia-Jimenez et al., 1994 ) have been designed to break linkages between introgression barriers and desirable alleles. These approaches should be pursued to increase the number of big vein resistance

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Roland Ebel and Clinton C. Shock

market demands, extension would supposedly respond more effectively to the needs of farmers and other value chain actors as if guided by the government ( Christoplos, 2008 ). However, the experience so far shows that for gaining access to rural

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Mark L. Gleason, Amy Wang Wong, Donald R. Lewis, Luis Felipe Arauz Cavallini, Barbara C. Clawson, Kevin R. Duerfeldt, Hayley M. Nelson, and Gail R. Nonnecke

barriers.” UCR students also reported that the experience allowed them to improve their English speaking and listening comprehension, build confidence in their ability to communicate in a second language, and increase their desire to become more fluent in

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Orlando F. Rodriguez Izaba, Wenjing Guan, and Ariana P. Torres

deterring farmers to adopt grafting, our findings suggested that with access to skilled grafters, grafting labor may have less influence on the cost of grafted vegetable production compared with the other factors, such as rootstock, seed, and grafting

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Mark K. Ehlenfeldt and James L. Luteyn

remains to be understood about intersectional hybrids in Vaccinium ; however, given these results and the results of several other studies ( Ehlenfeldt and Polashock, 2014 ; Lyrene, 2011 , 2016 ; Morozov, 2007 ), intersectional crossing barriers appear

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Emily K. Dixon, Bernadine C. Strik, Luis R. Valenzuela-Estrada, and David R. Bryla

remove them only before harvest. However, weeds compete with blackberry plants and can significantly reduce yield when left unmanaged ( Harkins et al., 2013 ; Meyers et al., 2014 ). The use of a perforated landscape fabric, or “weed mat,” as a barrier to

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Analena B. Bruce, Elizabeth T. Maynard, and James R. Farmer

common perception among the interviewed farmers that the greatest barrier to high-capacity management is the required investment of sufficient time and labor in these high tunnels. Because producers may be integrating high tunnel production into farming

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Ronald C. Stephenson, Christine E.H. Coker, Benedict C. Posadas, Gary R. Bachman, Richard L. Harkess, John J. Adamczyk, and Patricia R. Knight

of access to restricted use pesticides and cultivars with limited resistance to insect and disease may result in extensive losses. Improved crop protection strategies may lead to significant increases in production efficiency ( Lucas, 2011 ). Due to