Soil fertility

Detecting and correcting soil calcium limitations. T.K. Hartz, R. Smith, M. Cahn. (2007) FREP.
Efficient phosphorus management in coastal vegetable production. T.K. Hartz. (2004) FREP.
Evaluation of pre-sidedress soil nitrate testing to determine N requirements of cool season vegetables. T.K. Hartz. (1995) FREP.
Humic substances generally ineffective in improving vegetable crop nutrient uptake or productivity. T.K. Hartz, T.G. Bottoms. (2010) HortScience 45(6):906-910.
Lettuce response to phosphorus fertilization in high phosphorus soils. P.R. Johnstone, T.K. Hartz, M.D. Cahn, M.R. Johnstone. (2005) HortScience 40(5):1499-1503.
Mineral nutrition. R.S. Johnson, K. Uriu. (1989) Peaches, Plums, and Nectarines: Growing and Handling for Fresh Market, Chapter 13: 68-81, UC ANR Publication 3331.
Mineralizable nitrogen in soil: methods and interpretations. D.M. Sullivan. (2003) WNMC.
Nitrogen fertilizer technologies. A.D. Blaylock, J. Kaufmann, R.D. Dowbenko. (2005) WNMC.
Nutrient cycling and maintaining soil fertility. P.M. Bierman, C.J. Rosen. (2005) University of Minnesota Extension Service.
P and K in potatoes. D.A Horneck. (2005) WNMC.
Soil characteristics of New Mexico vineyards: management implications. R. Flynn. (2007) WNMC.
Using manure and compost as nutrient sources for vegetable crops. C.J. Rosen, P.M. Bierman. (2005) University of Minnesota Extension Service.
 

CPSC = California Plant and Soil Conference
FFTC ASPAC = Food & Fertilizer Technology Center for the Asian and Pacific Region
FREP = Fertilizer Research and Education Program completed project
UC ANR = University of California Agriculture and Natural Resources
UF IFAS = University of Florida Institute of Food and Agricultural Sciences
WNMC = Western Nutrient Management Conference
WTFRC = Washington Tree Fruit Research Commission