REFERENCES
- Adani , F. , Genevini , P. , Zacheo , P. and Zocchi , G. 1998 . The effect of commercial humic acid on tomato plant growth and mineral nutrition . Journal of Plant Nutrition , 21 : 561 – 575 .
- Asenjo , M. C. , Gonzalez , J. L. and Maldonado , J. M. 2000 . Influence of humic extracts on germination and growth of ryegrass . Communications Soil Science and Plant Analysis , 31 : 101 – 114 .
- Ayuso , M. , Hernandez , T. , Garcia , C. and Pascual , J. A. 1996 . Stimulation of barley growth and nutrient absorption by humic substances originating from various organic materials . Bioresource Technology , 57 : 251 – 257 .
- Brownell , J. R. , Nordstrom , G. , Marihart , J. and Jorgensen , G. 1987 . Crop responses from two leonardite extracts . The Science of the Total Environment , 62 : 491 – 499 .
- Cacco , G. and Dell'agnola , G. 1984 . Plant growth regulator activity of soluble humic complexes . Canadian Journal of Soil Science , 64 : 225 – 228 .
- Chen , Y. and Aviad , T. 1990 . “ Effects of humic substances on plant growth ” . In Humic Substances in Soil And Crop Sciences , Edited by: MacCarthy , P. , Clapp , C. E. , Malcolm , R. L. and Bloom , P. R. 161 – 186 . Madison, WI : American Society of Agronomy .
- Chen , Y. , Senesi , N. and Schnitzer , M. 1977 . Information provided on humic substances by E4/E6 ratios . Soil Science Society American Journal , 41 : 352 – 358 .
- Eyheraguibel , B. 2004 . “ Characterization and plant effects of biomimetic humic substances ” . Toulouse, , France : Ph.D. Thesis, Institute National Polytechnique .
- Eyheraguibel , B. , Silvestre , J. and Morard , P. 2008 . Effects of humic substances derived from organic waste enhancement on growth and mineral nutrition of maize . Bioresource Technology , 99 : 4206 – 4212 .
- Fernandez-Escobar , R. , Benlloch , M. , Barranco , D. , Duenas , A. and Guterrez Ganan , J. A. 1996 . Response of olive trees to foliar application of humic substances extracted from leonardite . Scientia Horticulturae , 66 : 191 – 200 .
- Ferretti , M. , Ghisi , R. , Nardi , S. and Passera , C. 1991 . Effect of humic substances on photosynthetic sulphate assimilation in maize seedlings . Canadian Journal of Soil Science , 71 : 239 – 242 .
- Malik , K. A. and Azam , F. 1985 . Effects of humic acid on wheat seedling growth . Environmental and Experimental Botany , 25 : 245 – 252 .
- Masciandaro , G. , Ceccanti , B. , Ronchi , V. , Benedicto , S. and Howard , L. 2002 . Humic substances to reduce salt effect on plant germination and growth . Communications Soil Science and Plant Analysis , 33 : 365 – 378 .
- Mei , H. S. and Yang , J. J. 1983 . A comparative study of inhibiting stomatal opening between the humates and phytohormones . Acta Phytophysiologia Sinica , 9 : 143 – 149 .
- Morard , P. , Gourdon , C. , Rigal , L. , Prat , L. and Silvestre , J. 2005 . “ Humic substance like process and applications ” . French Patent n°AF 2 890 654, PCT n° WO 2007/031625
- Morard , M. and Morard , P. 2006 . Humic substance like improve strawberry crops . Horticultura Spain , 193 : 20 – 23 .
- Morard , P. and Morard , M. 2007 . Hydroponics and soilless cultures , Toulouse, , France : Cedipa .
- Nardi , S. , Pizzeghello , D. , Musculo , A. and Vianello , A. 2002 . Physiological effects of humic substances on higher plants . Soil Biology and Biochemistry , 34 : 1527 – 1536 .
- O’Donnell , R. W. 1973 . The auxin-like effects of humic preparations from leonardite . Soil Science , 116 : 106 – 112 .
- Piccolo , A. , Nardi , S. and Concheri , G. 1992 . Structural characteristics of humic substances as related to nitrate uptake and growth regulation in plant systems . Soil Biology and Biochemistry , 24 : 373 – 380 .
- Pilanah , N. and Kaplan , M. 2003 . Investigation of effects on nutrient uptake of humic acid applications of different forms to strawberry plants . Journal of Plant Nutrition , 26 : 835 – 843 .
- Rauthan , B. S. and Schnitzer , M. 1981 . Effects of a soil fulvic acid on the growth and nutrient content of cucumber (Cucumis sativus) plants . Plant and Soil , 63 : 491 – 495 .
- Richard , J. F. 2002 . “ Characterization of humic substances like and comparison with natural humic substances ” . Toulouse, , France : PhD. Thesis, Institute National Polytechnique .
- Varanini , Z. and Pinton , R. 1995 . Humic substances and plant nutrition . Progress in Botany , 56 : 97 – 117 .
- Varanini , Z. and Pinton , R. 2001 . “ Direct versus indirect effects of soil humic substances on plant growth and nutrition ” . In The Rhizosphere , Edited by: Pinton , R. , Varanini , Z. and Nannipieri , P. 141 – 157 . New York : Marcel Dekker .
- Vaughan , D. , Malcom , R. E. and Ord , B. G. 1985 . “ Influence of humic substances on biochemical process in plants ” . In Soil Organic Matter and Biological Activity , Edited by: Vaughan , D. and Malcom , R. E. 77 – 108 . Dordrecht, , the Netherlands : Kluwer .