Services Consulting services specialized in new crops and agricultural practices for arid and semiarid tropics and subtropics. Over 30 years developing Jojoba, Chia, Moringa and other projects in many countries arround the world.
The purpose of these references is to share the published information generated in the research and development projects (R&D) on new crops for arid and semiarid zones, in which Ricardo Ayerza (h) has been envolved. The period goes from 1979 up to present. Their work covers many aspects of the production and uses of new crops for arid and semi-arid lands. In order to keep the highest scientific and technical standards, only those projects published in ¨per review journals¨, scientific conferences and chapters of scientific books are presented here. They are available in the language in which they were published (English, Spanish or Portuguese). Some of them have a summary in English, French, Portuguese and Spanish.
Publications are grouped by plant species, including research made in Argentina, Bolivia, Colombia, Ecuador, Mexico, Paraguay, Peru and USA. However, due to the high number of papers totally or partially done in the South American Gran Chaco, those related to this vast ecosystem, have the word Chaco at the end of the references. Curriculum Vitae Over 20 years as Associate in Arid Lands, Office of Arid Lands Studies, The University of Arizona, Tucson, Arizona, USA. Associate Professor at the Agricultural School, Peninsula de Santa Elena State University, La Libertad, Ecuador. Former Executive Member of the Arid Lands Committee, American Association for the Advancement of Science, Washington D.C., USA. Project leader of the projects that introduced chia as commercial crop in Argentina, Bolivia, Colombia, Ecuador, Paraguay and Perú; jojoba in Argentina and Peru, and moringa in Argentina and Ecuador. He has published a number of scientific papers, 81 of them in per review journals in the European Union, Canada, Japan and USA. He has written 4 books on Chia, Jojoba, Guayule and Buffel Grass from the introduction in the country until reaching the commercial crop stage. Chia (Salvia hispanica L.) Is an annual species native to sub-humid areas of western Mexico and northwestern Guatemala that produces a seed oil that contains the highest concentration of omega-3 fatty acids known in nature. These fatty acids contribute to reduced risk of cardiovascular disease. The seed also is rich in high quality protein, antioxidants and dietary fiber.

Ayerza (h), R. 2016. Crop year effects on seed yields, growing cycle length, and chemical composition of chia (Salvia hispanica L) growing in Ecuador and Bolivia. Emirates Journal of Food and Agriculture, United Arab Emirates University, 28(3):196-200. Chaco.

Ayerza (h), R. 2013. Contenido de antioxidantes, proteinas, aceite y perfiles de acidos grasos de un genotipo de semillas de chia cultivadas en tres ecosistemas tropicales de America del Sur. Revista Aceites y Grasas, Asociacion Argentina de Aceites y Grasas, Buenos Aires, Argentina, (23)3:402-407. Chaco - Ecuador.

Ayerza (h), R. 2013. Antioxidants, protein, oil content and fatty acids profiles of a single genotype of chia seeds (Salvia hispanica L.) growing in three different ecosystems of South America.

Translated from Revista Aceites y Grasas, Asociacion Argentina de Aceites y Grasas, Buenos Aires, Argentina, (23)3:402-407. Chaco-Ecuador.

Ayerza (h),  R. 2013. Seed composition of two chia (Salvia hispanica L.) genotypes which differ in seed color. Emirates Journal of Food and Agriculture, United Arab Emirates University, 25(7):495-500.

Antruejo, A., J.O. Azcona, P.T. Garcia, C. Gallinger, M. Rosmini, R. Ayerza (h), W. Coates, and C.D. Perez. 2011. Omega-3 enriched egg production: The effect of a-linolenic u-3 fatty acid sources on laying hen performance and yolk lipid content and fatty acid composition. British Poultry Science, Basingstoke, Hants, United Kingdom, 52(6):750-760.

Ayerza (h), R. and W. Coates. 2011. Protein content, oil content and fatty acid profiles as potential criteria to determine the origin of commercially grown chia (Salvia hispanica L.). Industrial Crops and products, Elsevier Science, Amsterdam, The Netherlands, 34(2):1366-1371. Chaco - Ecuador

Ayerza (h), R. 2011. The seed s oil content and fatty acid composition of chia (Salvia hispanica L.) variety Iztac 1, grown under six tropical ecosystems conditions. Interciencia, 36(8):620-624. Ecuador

Ayerza (h), R. 2010. Effects of seed color and growing locations on fatty acid content and composition of two chia (Salvia hispanica L.) genotypes. Journal of The American Oil Chemists' Society, Peoria, Illinois, U.S.A., 87(10):1161-1165. Ecuador

Ayerza (h), R. 2009. The seed's protein and oil content, fatty acid composition, and growing cycle length of a single genotype of chia (Salvia hispanica L.) as affected by environmental factors. Journal of Oleo Science, Japan Oil Chemists  Society, Nihonbashi, Tokyo, Japan, 58(7):347-354. Chaco - Ecuador

Ayerza (h), R. and W. Coates. 2009. Some quality components of four chia (Salvia hispanica L.) genotypes grown under Tropical Coastal Desert ecosystem conditions. Asian Journal of Plant Science 8(4):301-307. Ecuador

Ayerza (h), R. and W. Coates. 2009. Influence of environment and genotype on crop cycle and yield; seed protein, oil, and a-linolenic u-3-fatty acid content of three chia (Salvia hispanica L.) selections. Industrial Crops and products, Elsevier Science, Amsterdam, The Netherlands, 30(2):321-324. doi:10.1016/j.indcrop.2009.03.009 Ecuador

Coates, W. and R. Ayerza (h). 2009. Chia (Salvia hispanica L.) seed as an u-3 fatty acid source for growing-finishing pigs: effects on fatty acid composition and fat stability of the meat and internal fat, growth performance, and meat sensory characteristics. Journal of Animal Science, American Society of Animal Science, Champaigne, Illinois, USA, 87:3798-3804. doi:10.2527/jas.2009-1987

Ayerza (h), R. and W. Coates. 2008. Seed yield, oil content and fatty acid composition of three botanical sources of u-3 fatty acid planted in The Yungas ecosystem of Tropical Argentina. Tropical Science, Surrey, England, 47(4):183-187. doi: 10.1002/ts.211

Fernandez, I., S.M. Vidueiros, R. Ayerza (h), W. Coates, and A. Pallaro. 2008. Impact of chia on the immune system: preliminary study. Proceedings of the Nutrition Society, London, U.K., 67(OCE):E12.

Azcona, J.O., Schang, M.J., Garcia, P.T., Gallinger, C., R. Ayerza (h), and Coates, W. 2008. Omega-3 enriched broiler meat: the influence of dietary alpha-linolenic omega-3 fatty acid sources on growth, performance and meat fatty acid composition. Canadian Journal of Animal Science, Ottawa, Ontario, Canada, 88:257-269.

Ayerza (h), R. 2007. Chia as a new source of u-3 fatty acids: nutritional comparison with other raw materials and its advantages when producing u-3 enriched eggs. In: Wild-type land-based diet in health promotion and chronic disease prevention: The Columbus Paradigm, edited by F. De Meester, and R.R. Watson. The Humana Press Inc., Totowa, New Jersey, U.S.A., pp. 179-194.

Ayerza (h), R. and W. Coates. 2007. Chia seeds and the Columbus Concept: bakery and animal products. In: Wild-type land-based diet in health promotion and chronic disease prevention: The Columbus Paradigm, edited by F. De Meester, and R.R. Watson. The Humana Press Inc., Totowa, New Jersey, U.S.A., pp. 357-392.

Ayerza (h), R. and W. Coates. 2007. Effect of dietary alpha-linolenic fatty acid derived from chia when fed as ground seed, whole seed and oil on lipid content and fatty acid composition of rat plasma. Annals of Nutrition and Metabolism. S. Karger, Basel, Switzerland, 51(1):27-34.

Ayerza (h), R. and W. Coates. 2006. Influence of chia on total fat, cholesterol, and fatty acid profile of Holstein cow s milk. Revista Cientifica de UCES, Universidad de Ciencias Empresariales y Sociales, Buenos Aires, Argentina, 10(2):39-48.

Ayerza (h), R. and W. Coates. 2005. Effect of ground chia seed and chia oil on plasma total cholesterol,  LDL, HDL, triglyceride content, and fatty acid composition when fed to rats. Nutrition Research, Elsevier Science, Amsterdam, The Netherlands, 25(11):995-1003.

Fernandez, I., R. Ayerza (h), W. Coates, S. M. Vidueiros, N. Slobodianik, and A. N. Pallaro. 2006. Caracteristicas nutricionales de la chia. Actualizacion en Nutricion, Sociedad Argentina de Nutricion, Buenos Aires, Argentina, 7(1):23-25.

Ayerza (h), R. and W. Coates. 2005. Enrichment of animal products with omega-3 fatty acids using chia seed-based ingredients. In: Industrial Crops and Rural Development, edited by M.J. Pascual-Villalobos, F.S. Nakayama, C.A. Bailey, E. Correal, and W.W. Schloman Jr., The Association for the Advancement of Industrial Crops, and Instituto Murciano de Investigacion y Desarrollo Agrario y Alimentario, Murcia, Spain, pp.797- 807.

Ayerza (h), R. and W. Coates. 2004. Protein and oil content, peroxide index and fatty acid composition of chia (Salvia hispanica L.) grown in six tropical and subtropical ecosystems of South America. Tropical Science, Surrey, England, 44(3):131-135. Chaco

Ayerza (h), Ricardo. 2002. Chia as a New Source of Omega-3 Fatty Acids: Advantage Over Other Raw Materials to Produce Omega-3 Enriched Eggs. 1st International Congress on the Columbus Concept. Edited by Fabien De Meester, Belovo S.A. Batogne, Belgium, pp. 43-61

Ayerza (h), R. and W. Coates. 2002. Dietary levels of chia: influence on hen weight, egg production, and egg sensory quality. British Poultry Science, Basingstoke, Hants, United Kingdom, 43(2):283-290.

Ayerza (h), R. , W. Coates, and M. Lauria. 2002. Chia as an omega-3 fatty acid source for broilers: influence on fatty acid composition, cholesterol and fat content of white and dark meat, on growth performance and on meat flavor. Poultry Science, Savoy, Illinois, U.S.A. 81:826-837.

Ayerza (h), R. and W. Coates. 2001. The omega-3 enriched eggs: the influence of dietary linolenic fatty acid source combination on egg production and composition. Canadian Journal of Animal Science, Canadian Journal of Animal Science, Ottawa, Ontario, Canada, 81(3):355-362.

Ayerza (h), R. and W. Coates. 2000. Dietary levels of chia: yolk cholesterol, lipid content, and fatty acid composition, for two strains of hens. Poultry Science, Savoy, Illinois, U.S.A., 79:724-739.

Ayerza (h), R. and W. Coates. 1999. An omega-3 fatty acid enriched chia diet: influence on egg fatty acid composition, cholesterol and oil content. Canadian Journal of Animal Science, Ottawa, Canada, 79:53-58.

Coates, W. and R. Ayerza (h). 1998. Commercial production of chia in Northwestern Argentina. Journal of American Oil Chemists ́ Society, Peoria, Illinois, U.S.A., 75(10):1417-1420. Chaco

Coates, W. and R. Ayerza (h). 1996. Production potential of chia in Northwestern Argentina. Industrial Crops and Products. Elsevier, Amsterdam, The Netherlands, 5(3):229-233. Chaco

Ayerza (h), R. 1995. Oil Content and fatty acid composition of chia (Salvia hispanica L.) from five Northwestern Locations in Argentina. Journal of The American Oil Chemists' Society, Peoria, Illinois, U.S.A., 72(9):971-1090. Chaco

Moringa
(Moringa oleifera Lam.) Is a small tree native to arid areas of the Himalayan foothills. It seeds produces and oil rich in oleic fatty acids and poor in polyunsaturated fatty acid (1%). That produces great oxidative stability, vital in cosmetic industry applications. The oil, pods and seeds, are commonly used in human and animal food.

Ayerza (h), R. 2012. Seed and oil yields of Moringa oleifera var. Periyakalum-1introduced for oil production in four ecosystems of South America. Industrial Crops and Products, Elsevier Science, Amsterdam, The Netherlands, 36:70-73. Chaco. Corrigendum.

Ayerza (h), R. 2012. Seed and oil yields of Moringa oleifera var. Periyakalum-1introduced for oil production in four ecosystems of South America. Industrial Crops and Products, Elsevier Science, Amsterdam, The Netherlands, 36:70-73. Chaco

Ayerza (h), R. 2011. Seed's yield components, oil content, and fatty acid composition of two populations of moringa (Moringa oleifera Lam.) growing in the Arid Chaco of Argentina. Industrial Crops and Products, Elsevier Science, Amsterdam, The Netherlands, 33:389-394. Chaco

Jojoba (Simmondsia chinensis L. [Schneider]) Is an evergreen shrub native to the Sonoran Desert in southwestern United States and northwestern Mexico. It produces a seed containing a liquid wax that behaves as a unique oil to cosmetology and pharmaceutical industry. This wax succesfully replaced whale´s oil, contributing this way to the preservation of this species.

Ayerza (h), R.  2016. Case studies - Jojoba, new industrial crop development and commercialization in Argentina. Proceedings of the International Workshop on Olive and Jojoba. State Institute of Agriculture Management, Government of Rajasthan, Jaipur, India, pp. 1-14.

Coates, W. and R. Ayerza (h). 2008. Supplemental pollination - Increasing jojoba (Simmondsia chinensis L.[Schneider]) seed yields in the Arid Chaco environment Industrial Crops and products, Elsevier Science, Amsterdam, The Netherlands, 27:364- 370. Chaco

Coates, W., R. Ayerza (h) and D. Palzkill. 2006. Supplemental pollination of jojoba - A means to increase yields. Industrial Crops and products, Elsevier Science, Amsterdam, The Netherlands, 24(1):41-45

Ayerza (h), R. 2001. Seed wax ester composition of ten jojoba clones growing in two arid ecosystems of South America. Tropical Science, Surrey, England, 41:1-4. Chaco

Kolodziejczyk, P.P., W. Lu, R. Ayerza (h), and M.A. de Larmint. 2000. Capillary electrophoresis: novel tool for simmondsin analysis and its application to jojoba breeding. Industrial Crops and Products, Elsevier, Amsterdam, The Netherlands, 12:193-202. Chaco

Ayerza (h), R. 1995. Evaluation of eight jojoba clones for rooting capacity, plant volume, seed yield and wax quality and quantity. Proceedings of the III International Conference on New Industrial Crops and Products, and the IX International Conference on Jojoba and Its Uses. American Oil Chemists's Society, Peoria, Illinois, U.S.A., pp. 1-8. Chaco

Ayerza (h), R. 1993. Effect of irrigation on jojoba production under Arid Chaco conditions: II-Seed yields and wax quality. Journal of The American Oil Chemists's Society, Peoria, Illinois, U.S.A., 70(12):1225-1228. Chaco

Ayerza (h), R.1992. Deficiente vernalizacion de la jojoba en el Chaco Paraguayo. Gaceta Agronomica, Buenos Aires, Argentina, 12(68):264-268. Chaco

Ayerza (h), R. 1992. Inadequate vernalization for jojoba production in the Paraguayan Chaco. Translated from Gaceta Agronomica, Buenos Aires, Argentina, 12(68):264-268. Chaco

Ayerza (h), R. 1990. The potential of jojoba (Simmondsia chinensis L.) in the Arid Chaco. I - Rooting capacity, seed and wax yield. Proceedings of The First International Conference on New Industrial Crops and Products. The Association for the Advancement of Industrial Crops and The University of Arizona, Tucson, Arizona, U.S.A., pp. 41-46. Chaco

Ayerza (h), R. 1990. Variability of oil content in jojoba (Simmondsia chinenesis L. [Schneider]) seeds harvested in the sonoran desert. Proceedings of the 8th International Conference on Jojoba and Its Uses, and 1st International Conference on Promising Crops for Arid and Semi Arid Lands. Latin America Jojoba Association and Jojoba Growers Association, Asuncion, Paraguay, pp. 200-205

Lopez, S., R. Ayerza (h), N. Barbaro, and R. Tramontini. 1990. Sistema radicular y manejo del cultivo de la jojoba. Proceedings of the II simposio internacional sobre avances en el cultivo de la jojoba. Latin America Jojoba Association, Ica, Peru, pp. 88- 95. Chaco

Ayerza (h), R. 1989. Mejoramiento genetico de jojoba. Proceedings of the II Congreso Nacional de Jojoba, Asociacion Argentina de Jojoba, La Rioja, Argentina, pp. 15-18

Ayerza (h), R. 1989. La jojoba en el Chaco Americano. Taller internacional sobre pastos y granos para el Chaco Semiarido, FAO-Organizacion para la Alimentacion y la Agricultura, Santiago, Chile, pp. 81-98. Chaco

Ayerza (h), R. and D. Zeaser. 1987. Evaluation of two origins of jojoba from production. Proceedings of the II Australian Jojoba Association Seminar. Australian Jojoba Booklet, Perth, Australia, pp. 5-7. Chaco

Barbaro, N., E. Brenzoni, R. Ayerza (h), R. Tramontini, and E. Ortubia. 1985. I- Evaluacion del sistema radicular con una tecnica de radioisotopos. Proceedings of the I Simposio Internacional sobre Avances en el Cultivo de la Jojoba. Latin America Jojoba Association, Iquique, Chile, pp. 19-34. Chaco

Ayerza (h), R. 1985. Production indexes of jojoba (Simmondsia chinensis L.) without irrigation in Villa Dolores, Cordoba, Argentina. Proceedings of the Sixth International Conference on Jojoba and Its Uses. Ben-Gurion University of The Negev, Beer-Sheva, Israel, pp. 7-14. Chaco

Ayerza (h), R. 1982. Past, present and future of jojoba in Argentina. Proceedings of the V International Conference on Jojoba and its Uses, The University of Arizona,Tucson, Arizona, U.S.A., pp. 121-127. Chaco

Other Crops Olive

Ayerza (h), R. and W. Coates. 2004. Supplemental pollination - increasing olive (Olea europaea L.) yields under hot arid environments. Experimental Agriculture, Cambridge University Press, Cambridge, U.K., 40:481-491. Chaco

Ayerza (h), R. and G.S. Sibbett. 2001. Thermal adaptability of olive (Olea europaea L.) to the Arid Chaco of Argentina. Agriculture, Ecosystems & Environment. Elsevier Science, Amsterdam, The Netherlands, 84(3):227-285. Chaco

Kenaf

Ayerza (h), R. and W. Coates. 1999. Evaluation of kenaf production in subtropical Argentina. Tropical Science, Surrey, England, 39:85-90. Chaco

Ayerza (h), R. and W. Coates. 1996. Kenaf perfomance in Northwestern Argentina. Industrial Crops and Products. Elsevier, Amsterdam, The Netherlands, 5(3):229-233. Chaco

Ayerza (h), R. and C. G. Cook. 1995. Potential of kenaf in Argentina: III - Variety trial in Catamarca, 1991-1994. Proceedings of the III International Conference on New Industrial Crops and Products, and the IX International Conference on Jojoba and Its Uses. American Oil Chemists's Society, Peoria, Illinois, U.S.A., pp. 276-279. Chaco

Ayerza (h), R., L. Castellan, and C. Gomez Alvarenga. 1995. Potential of kenaf in Argentina: V - Variety trial in formosa. Proceedings of the III International Conference on New Industrial Crops and Products, and the IX International Conference on Jojoba and Its Uses. American Oil Chemists's Society, Peoria, Illinois, U.S.A., pp. 280-281. Chaco

Leucaena & Guayule

Coates, W., R. Ayerza (h), and D. Ravetta. 2001. Guayule rubber and latex content: variation with time. Industrial Crops and Products, Elsevier, Amsterdam, The Netherlands, 14(2):85-91. Chaco

Ayerza (h), R. 1992. Nuevas alternativas para el desarrollo de las rgiones aridas y semiaridas argentinas. In: Problemas y Soluciones Ambientales Argentinos, Galloni, M. del C. (ed.). Roemmers S.A., Buenos Aires, Argentina, pp. 17-50. Chaco

Ayerza (h), R. 1983. Leucaena (Leucaena leucocephala Lam. [de Wit]) en Villa Dolores, Cordoba. Proceedings of the Taller de arbustos forrajeros en las regiones aridas y semiaridas. FAO-Organizacion para la Alimentacion y la Agricultura, Mendoza, Argentina, pp. 55-66. Chaco

Vernonia, Lesquerella & Chan

Ayerza (h), R. and W. Coates. 1996. New industrial crops: Northwestern Argentina Regional Project. In: Progress in New Crops, edited by J.J. Janick, ASHS Press, Alexandria, Virginia, pp.46-51. Chaco

Ayerza (h), R. 1995. New industrial crops in South-America. Proceedings of the III International Conference on New Industrial Crops and Products, and the IX International Conference on Jojoba and Its Uses. American Oil Chemists's Society, Peoria, Illinois, U.S.A., pp. 187-191. Chaco

Animal Production Buffel Grass & Algarrobo

Ayerza (h), R. 2010. Bos indicus and Bos indicus x Bos taurus heifers performance under two grazing systems in the Arid Chaco of Argentina. Livestock Research for Rural Development,

22(96): www.lrrd.org/lrrd22/5/ayer22096.htm Chaco

Coates, W. and R. Ayerza (h). 2004. Comparison of llama fiber obtained from two production regions of Argentina. Journal of Arid Environments, Elsevier Science, Amsterdam, The Netherlands, 58:513-524.

Coates, W. and R. Ayerza (h). 2004. Fatty acid composition of llama muscle and internal fat for two Argentine Herds. Small Ruminants. Elsevier Science, Amsterdam, The Netherlands, 52:231-238.eat

Ayerza (h), R. 1991. Viabilidad de la produccion animal en zonas aridas y semiaridas. Proceedings of the 28a. Reuniao Anual da Sociedade Brasileira de Zootecnia, Joao Pessoa, Paraiba, Brazil, pp. 13-46. Chaco

Ayerza (h), R. 1989. Produccion de semillas forrajeras en el Chaco Seco. Taller Internacional sobre Pastos y Granos para el Chaco Semiarido, FAO-Organizacion para la Alimentacion y la Agricultura, Santiago, Chile, pp. 59-70. Chaco

Ayerza (h), R., R. Diaz, and U.O. Karlin 1988. Management of Prosopis in livestock production systems in the Dry Chaco, Argentina. In: The current state of knowledge on Prosopis juliflora. FAO-Food and Agriculture organization of The United Nations, Rome, Italy, pp. 479-494.

Ayerza (h), R., R. Diaz, and U.O. Karlin. 1988. Manejo de Prosopis arboreos en sistemas de produccion animal en el Chaco Seco Argentino. Gaceta Agronomica, Buenos Aires, Argentina, 8(42):140-156 p. Chaco

Ayerza (h), R. 1988. Recria de vaquillonas Braford y Nelore en el Chaco Seco. Gaceta Agronomica, Buenos Aires, Argentina, 8(43):238-249. Chaco

Ayerza (h), R. and E. Ortubia. 1986. Variabilidad en la produccion de 26 accesiones de Buffel Grass (Cenchrus ciliaris L.) y 1 de Birdwood Grass (Cenchrus setigerus V.) en el Chaco Seco de Argentina. Proceedings of the V Reunion de Intercambio Tecnologico en Zonas Aridas y Semiaridas, La Rioja, Argentina, pp. 1:210-246. Chaco

Ayerza (h), R. 1985. Produccion forrajera de 19 gramineas C4 en una region subtropical semiarida. Proceedings of the IV Reunion de Intercambio Tecnologico en Zonas Aridas y Semiaridas, La Rioja, Argentina pp. 459-468. Chaco

Ayerza (h), R. 1983. Pasturas tropicales. In: Helman, M., Ganado Tropical. Ateneo, Buenos Aires, Argentina, pp. 56-80

Ayerza (h), R. 1982. Anjan Grass y ganado Nelore: un legado de la India para las regiones aridas de Argentina. Rangelands, Society for Range Management, Denver, Colorado, U.S.A., 4 (4):155-157. Chaco

Karlin, U. and R. Ayerza (h). 1982. O programa da algaroba na Republica Argentina. Proceedings of the I Simposio Brasileiro sobre Algaroba. Empresa de Pesquisa Agropecuaria do Rio Grande do Norte, Natal, Brazil, pp. 146-197. Chaco

Ayerza (h), R. 1981. Tropical pastures in the Northwest of Argentina. Rangelands, Society for Range Management, Denver, Colorado, U.S.A., 3(4):149-150. Chaco

Ayerza (h), R. 1980. Evaluacion de especies forrajeras exoticas en el area de Villa Dolores, Provincia de Cordoba. Proceedings of the VII encuentro nacional para el estudio de las regiones aridas y semiaridas. Instituto Nacional de Tecnologia Agropecuaria, San Luis, Argentina, pp. 259-263. Chaco

Ayerza (h), R. 1980. Los efectos de los fertilizantes fosfatados en la produccion de semillas de Buffel Grass (Cenchrus ciliaris L.). Revista de Ciencias Agrarias, Universidad Catolica Argentina, Buenos Aires, Argentina, 1(3):99-102. Chaco

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