Data presentation, interpretation, and communication

References

• Cooper , P.J.M. , Gregory , P.J. , Tully , D. and Harris , H.C. 1987 . Improving water‐use efficiency of annual crops in the rainfed fanning systems of West Asia and North Africa . Expl. Agric. , 23 : 113 – 158 .
   Web of Science ®Google Scholar
• Harmsen . 1984 . Nitrogen fertilizer use in rainfed agriculture . Fert Res. , 5 : 371 – 382 .
   Web of Science ®Google Scholar
• Kassam , A. 1981 . Climate, soil and land resources in North Africa and West Asia . Plant and Soil, , 58 : 1 – 28 .
   Web of Science ®Google Scholar
• Khan , M.A. and Ryan , J. 1978 . Manganese availability of calcareous soils of Lebanon . Agron. J. , 71 : 688 – 690 .
   Web of Science ®Google Scholar
• Khan , Z.D. , Ryan , J. and Berger , K.C. 1979 . Available boron in calcareous soils of Lebanon . Agron. J. , 70 : 79 – 82 .
   Web of Science ®Google Scholar
• Lindsay , W.L. and Norvell , W.A. 1978 . Development of a DTPA test for zinc, iron, manganese and copper . Soil Sci. Soc. Am. J. , 42 : 421 – 428 .
   Web of Science ®Google Scholar
• Masri , Z. , Ryan , J. and Masri , S. Changes in soil physical properties with continuous cereal cropping in northern Syria . Symposium on “Arid‐Region Soils” . Sept. 21–25 1998 , Izmir , Turkey.
   Google Scholar
• Matar , A. 1985 . Standardization of the NaHCO3‐extractable P in soil of ICARDA region , Res. Rept. No. 15 Aleppo , , Syria : ICARDA .
   Google Scholar
• Matar , A. , Torrent , J. and Ryan , J. 1992 . Soil and fertilizer phosphorus and crop responses in the dryland Mediterranean zone . Adv. Soil Sci. , 18 : 81 – 146 .
   Google Scholar
• Matar , A.E. 1992 . Soil testing as a guide to fertilization in West Asia and North African (WANA) region . Commun Soil Sci. Plant Anal. , 23 : 2075 – 2085 .
   Web of Science ®Google Scholar
• Matar , A.E. , Pala , M. , Beck , D. and Garabet , S. 1990 . Nitrate ‐ N test as a guide to N fertilization of wheat in the Mediterranean region . Commun. Soil Sci. Plant Anal. , 21 (13–16) : 1117 – 1130 .
   Web of Science ®Google Scholar
• Matar , A.E. , Beck , D.P. , Pala , M. and Garabet , S. 1991 . Nitrogen mineralization potentials of selected Mediterranean soils . Commun Soil Sci. Plant Anal. , 21 : 23 – 36 .
   Web of Science ®Google Scholar
• Materon , L. and Ryan , J. 1995 . Rhizobial inoculation, phosphorus and zinc nutrition for annual medics (Medicago spp.) adapted to Mediterranean environments . Agron. J. , 87 : 692 – 698 .
   Web of Science ®Google Scholar
• Peverill , K.I. , Sparrow , L.A. and Reuter , D.J. 1999 . Soil analysis: an interpretation manual , Australia : CSIRO Publ. Collinwood 3066 .
   Google Scholar
• Rashid , A. , Rafique , E. , Din , J. , Malik , S.N. and Arain , M.Y. 1997a . Micronutrient deficiencies in rainfed calcareous soils of Pakistan. I. Iron chlorosis in the peanut plant . Commun. Soil Sci. Plant Anal. , 28 : 135 – 148 .
   Web of Science ®Google Scholar
• Rashid , A. , Rafique , E. and Ali , N. 1997b . Micronutrient deficiencies in rainfed soils of Pakistan. II. Boron nutrient status of the peanut plant . Commun. Soil Sci. Plant Anal. , 28 : 149 – 159 .
   Web of Science ®Google Scholar
• Reuter , D. and Robinson , J.B. , eds. 1997 . Plant analysis: an interpretation manual , 2nd ed. , Collingwood 3066 , , Australia : CSIRO, Publ. .
   Google Scholar
• Richards , L. A. , ed. 1954 . Diagnosis and improvement of saline and alkaline soils , Handbook 60. Washington : United States Dept. Agric. .
   Google Scholar
• Ryan , J. 1998 . “ Changes in organic carbon in long‐term rotation and tillage trials in northern Syria ” . In Management of Carbon Sequestration in Soil. Adv. Soil Sci. , Edited by: Lal , R. 285 – 295 . Boca Raton , Florida : CRC .
   Google Scholar
• Ryan , J. and Zghard , M.A. 1980 . Phosphorus transformation with age in a calcareous soil chronosequence . Soil Sci. Soc. Am. J. , 44 : 168 – 169 .
   Web of Science ®Google Scholar
• Ryan , J. and Matar , A. Soil test calibration in West Asia and North Africa . Proc. Third Regional Workshop, Amman, Jordan . Sept. 3–9 1998 . Aleppo , , Syria : ICARDA .
   Google Scholar
• Ryan , J. and Matar , A. Fertilizer use efficiency under rainfed agriculture in West Asia and North Africa . Proc. Soil Test Calibration Workshop. Agadir, Morocco . May 5–10 1991 . Aleppo , , Syria : ICARDA .
   Google Scholar
• Ryan , J. and Garabet , S. 1994 . Soil test standardization in West Asia ‐ North Africa . Commun. Soil Sci. Plant Anal. , 25 : 1641 – 1653 .
   Web of Science ®Google Scholar
• Ryan , J. , Garabet , S. , Harmsen , K. and Rashid , A. 1996 . A soil and plant analysis manual adapted to West Asia and North Africa region , Aleppo , , Syria : ICARDA .
   Google Scholar
• Ryan , J. , Masri , S. , Garabet , S. , Diekmann , J. and Habib , H. 1997 . Soils of ICARDA's agricultural experimental stations and sites: climate, classification, physical and chemical properties, and land use , Aleppo , , Syria : ICARDA .
   Google Scholar
• Ryan , J. , Singh , M. and Yau , S.K. 1998a . Spatial variability of soluble boron . Soil & Tillage Res. , 45 : 407 – 417 .
   Web of Science ®Google Scholar
• Ryan , J. , Bounjmate , M. , Masri , S. , Estephan , G. and Christiansen , S. 1998b . Management of a long‐term barley/legume trial: nitrogen and carbon effects . Agron. Abst. , : 42 (Madison, Wisconsin).
   Google Scholar
• Ryan , J. , Garabet , S. , Rashid , A. and El Gharous , M. 1999a . Assessment of soil and plant analysis laboratories in the West Asia‐North Africa region . Commun. Soil Sci. Plant Anal. , 30 : 885 – 894 .
   Web of Science ®Google Scholar
• Ryan , J. , Masri , S. and Karajeh , F. Use of untreated sewage water in Syria: a bane or a blessing? Fifth Intern . Meeting of “Soils with Mediterranean‐Type Climate . July 4–9 1999 , Barcelona , Spain.
   Google Scholar
• Ryan , J. , Masri , S. and Masri , Z. Potassium in Syrian soils: implications for crop growth and fertilizer needs . Proc. Regional Workshop on Food Security in the WANA region: The Essential Need for Balanced Fertilization”;. Bornova, Turkey . May 26–30 1997 . Edited by: Johnston , A.E. and Kraus , A. Bassel , , Switzerland : Intern.. Potash Inst . (in press)
   Google Scholar
• Sahyouni , M. and Ryan , J. 1983 . Potassium in Lebanese soils as reflected by electro‐ultrafiltration, chemical extraction and cropping . Iran Agric. Res. , 2 (1) : 11 – 22 .
   Google Scholar
• Sayegh , A. H. , Khan , N. A. , Khan , P. and Ryan , J. 1978 . Factors effecting gypsum and cation exchange determinations in gypsiferous soil . Soil Sci. , 125 : 294 – 300 .
   Web of Science ®Google Scholar
• Yau , S.K. , Nachit , M. and Ryan , J. 1997 . Variation in growth, development and yield of durum wheat in response to high soil boron,. II. Differences between genotypes . Aust. J. Agric. Res. , 48 : 951 – 957 .
   Google Scholar