Understanding Factors Governing the Horticultural Efficiencies of Orchard Canopies

Category I publications

26.         DeJong, T.M. and J.F. Doyle. 1984. Cropping efficiency, dry matter and nitrogen distribution in mature genetic dwarf and standard peach trees. Acta Horticulturae 146:89‑95.

32.         DeJong, T.M. and J.F. Doyle. 1985. The effect of row orientation on light distribution in hedgerow peach tree canopies. Acta Horticulturae 173:159‑166.

33.*       DeJong, T.M. and J.F. Doyle.  1985. Seasonal relationships between leaf nitrogen content (photosynthetic capacity) and leaf canopy light exposure in peach Prunus persica.  Plant, Cell and Environment 8:701‑706.

35.*       DeJong, T.M. 1986. Distribution of leaf nitrogen concentration in relation to leaf light exposure in peach tree canopies, In: Fundamental, Ecological and Agricultural Aspects of Nitrogen Metabolism in Higher Plants. p. 319‑321.

40.*       Day, K.R., T.M. DeJong and A.A. Hewitt. 1989. Postharvest and preharvest summer pruning of ‘Firebrite’ nectarine trees. HortScience 24(2):238‑240.

47.*       DeJong, T.M., K.R. Day, and R.S. Johnson. 1989. Partitioning of leaf nitrogen with respect to within canopy light exposure and nitrogen availability in peach (Prunus persica). Trees 3:89‑95.

50.*       Castagnoli, S.P., S.A. Weinbaum, and T.M. DeJong. 1989. Nitrogen remobilization and nursery tree growth following autumn defoliation in plum (Prunus salicina) trees. Advances in Horticultural Science 3:115‑119.

51.*       Castagnoli, S.P., T.M. DeJong, S.A. Weinbaum, and R.S. Johnson. 1990. Autumn foliage applications of ZnSO4 reduced leaf nitrogen remobilization in peach and nectarine. Journal of the American Society for Horticultural Science 115(1):79‑83.

55.*       Day, K.R. and T.M. DeJong.  1990.  Girdling of early season ‘Mayfire’ nectarine trees.  Journal of Horticultural Science 65(5):529-534.

59.*       Klein, I., T.M. DeJong, S.A. Weinbaum, and T.T. Muraoka. 1991. Specific leaf weight and nitrogen allocation responses to light exposure within walnut trees. HortScience 26(2):183-185.

61.*       Klein, I., S.A. Weinbaum, T.M. DeJong and T.T. Muraoka.  1991.  Relationship between fruiting, specific leaf weight, and subsequent spur productivity in walnut.  Journal of American Society for Horticultural Science 116(3):426-429.

62.*       Klein, I., S.A. Weinbaum, T.M. DeJong, and T.T. Muraoka.  1991.  Spur light exposure as a primary external cause for derivation of DRIS norms in walnut trees.  Journal of Plant Nutrition 14(5):463-484.

63.*       DeJong, T.M. and K.R. Day.  1991.  Relationships between shoot productivity and leaf characteristics in peach canopies.  HortScience 26(10):1271-1273.

66.*       Johnson, R.S., D.F. Handley, and T.M. DeJong.  1992.  Long-term response of early maturing peach trees to postharvest water deficits.  J. Amer. Soc. Hort. Sci. 117(6):881-886.

67.*       DeJong, T.M., K.R. Day, and J.F. Doyle.  1992.  Evaluation of training/pruning systems for peach, plum and nectarine trees in California.  Acta Horticulturae 322:99-105.

81.*       DeJong, Theodore M., Kevin R. Day, James F. Doyle, and R.S. Johnson.  1994.  The Kearney Agricultural Center Perpendicular “V” (KAC-V) orchard system for peaches and nectarine.  HortTechnology 4(4):362-367.

99.*       Grossman, Y.L. and T.M. DeJong.  1998.  Training and pruning system effects on vegetative growthpotential, light interception, and cropping efficiency in peach trees.  Journal of the American Society of Horticultural Science 123(6):1058-1064.

100.*     Rosati, A., G. Esparza, T.M. DeJong, and R.W. Pearcy.  1999.  Influence of canopy lightenvironment and nitrogen availability on leaf photosynthetic characteristics and photosynthetic nitrogen-use efficiency of field-grown nectarine trees.  Tree Physiology 19:173-180.

101.*     DeJong, T.M., W. Tsuji, J.F. Doyle, and Y.L. Grossman.  1999.  Comparative economic efficiency of four peach product systems in California.  HortScience 34(1):73-78.

105.*     Rosati, A., K.R. Day, and T.M. DeJong.  2000.  Distribution of leaf mass per unit area and leaf nitrogen concentration determine partitioning of leaf nitrogen within tree canopies.  Tree Physiology 20:271-276.

108.*     Rosati, A., F.W. Badeck, and T.M. DeJong.  2001.  Estimating canopy light interception and absorption using leaf mass per unit leaf area in Solanum melongena.  Annals of Botany 88:101-109.

110.*     Esparza, G., T.M. DeJong, S.A. Weinbaum, and I. Klein.  2001.  Effects of irrigation deprivation during the harvest period on yield determinants in mature almond trees.  Tree Physiology 21:1073-1079.

111.*     Esparza, G., T.M. DeJong, and S.A. Weinbaum.  2001.  Effects of irrigation deprivation during the harvest period on nonstructural carbohydrate and nitrogen contents of dormant, mature almond trees.  Tree Physiology 21:1081-1086.

112.*     Rufat, Josep and Theodore M. DeJong.  2001.  Estimating seasonal nitrogen dynamics in peach trees in response to nitrogen availability.  Tree Physiology 21:1133-1140.

113.*     Niederholzer, F.J.A., T.M. DeJong, J.-L. Saenz, T.T. Muraoka, and S.A. Weinbaum. 2001. Effectiveness of fall vs. spring soil fertilization of field-grown peach trees. Journal of American Society for Horticultural Science 125(5):644-648.

119.*     Rosati, A. and T.M. DeJong. 2003. Estimating photosynthetic radiation use efficiency using incident light and photosynthesis of individual leaves. Annals of Botany 91:869-877.

128.*     Lampinen, B.D., K.A. Shackel, S.M. Southwick, W.H. Olson, and T.M. DeJong. 2004. Leaf and canopy photosynthetic responses of French prune (Prunus domestica L. ‘French’) to stem water potential based deficit irrigation.  J. Hort. Sci. and Biotechnology 79:638-644.

161.*     Heerema, R.J., S.A. Weinbaum, B.D. Lampinen, and T.M. DeJong. 2009.  Is nitrogen stress more apparent in shaded, fruiting spurs than exposed, non-fruiting spurs? Journal of Horticultural Science & Biotechnology 84:355-359.

172.*     Lampinen, B.D., S. Tombesi, S.G. Metcalf, and T.M. DeJong, 2011.  Spur behaviour in almond trees: relationships between previous year leaf area, fruit bearing and mortality.  Tree Physiology 31:700-706

Category II publications

13.          Grossman, Yaffa L., Rachel B. Elkins, and Theodore M. DeJong. 1997. Summer pruning does not appear to increase Bartlett pear crop yield on reduced height trees in Northern California.  Acta Horticulturae 451:543-549.

14.          DeJong, T.M., W. Tsuji, J.F. Doyle, and Y.L. Grossman. 1997.  Do high density systems really pay? Evaluation of high density systems for cling peaches.  Acta Horticulturae 451:599-604.

29.          Elkins, R.B. and T.M. DeJong. 2002. Effect of Training system and rootstock on growth and productivity of ‘Golden Russet® Bosc’ pear trees. Acta Horticulturae 596:603-607.

33.          DeJong, T.M. 2006.  Physiological and developmental principles of peach tree and fruit growth related to management practices.  Acta Horticulturae 713:161-168.

38.          DeJong, T.M., K.R. Day and R.S. Johnson. 2008. Physiological and technological barriers to increasing production efficiency and economic sustainability of peach production systems in California. Acta Hort 772: 415-422.

39.          Elkins, R.B., T.M. DeJong, K. Klonsky and R. DeMoura. 2008. Economic evaluation of high density versus standard orchard configurations; case study using performance data for ‘Golden Russet Bosc’ pears. Acta Hort 800: 739-746.

46.          Elkins, R.B., and T.M. DeJong. 2011. Performance of ‘Golden Russet Bosc’ pear on five training systems and nine rootstocks. Acta Hort 903:689-694.

47.          Day, K.R., R.S. Johnson and T.M. DeJong.  2011. Effect of timing of topping to reduce tree height on subsequent year vigor of early-season ‘Arctic Star’ nectarine. Acta Hort 903:711-716.

50.          Spann T.M., R.H. Beede and T.M. DeJong. 2011. Contributions of short- and long-shoots to yield of ‘Kerman’ pistachio. Acta Hort. 903:973-978.

56.          Day, K.R., R.S. Johnson and T.M. DeJong 2013. The history of plum growing for the fresh market in California. Acta Hort. 985:27-34.

60.          Day, K.R., R.S. Johnson and T.M. DeJong. 2013. Developing a pedestrian plum orchard: the role of tree form, density, and height. Acta Hort. 985:175-180.

65.          Lopez, G., Girona, J., Marsal, J. and DeJong, T.M. 2015. Developing a physiological basis for modeling peach canopy photosynthesis under water stress conditions. Acta Hort. 1068:203-209

68.          T.M. DeJong. 2015. Ecophysiological limits to yield of peach production systems. Acta Hort. 1084:503-516