Download or read book Soil Science Analyses written by Denis Baize and published by . This book was released on 1993-10-05 with total page 216 pages. Available in PDF, EPUB and Kindle. Book excerpt: Coarse fragments; Residual water content; Organic carbon (OC) and organic matter (OM); Loss on ignition; Particle size analysis; Determination of particle size after removal of carbonate; Calculation and use of "Granulometric Skeletons"; Total and "Active" calcium carbonate; Cation exchange capacity (CEC); Exchangeable cations, exchange acidity, saturation levels, and exchange acidity ratios; Iron, aluminium and manganese; Total chemical analysis; X-Ray diffractometry; Porosity and bulk density; Characteristic water content; Structural stability and percolation tests; Soils giving rise to special problems.

Download or read book Agrindex written by and published by . This book was released on 1994 with total page 864 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Canadian Journal of Soil Science written by and published by . This book was released on 2007 with total page 634 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Les D terminants de la Production Agricole en Afrique de L Ouest written by Bernard Yapo Kouassi and published by KARTHALA Editions. This book was released on 2008 with total page 186 pages. Available in PDF, EPUB and Kindle. Book excerpt: En Afrique de l'Ouest, une série de facteurs contribue à la baisse de la productivité agricole : la dégradation de l'environnement, la forte croissance démographique, les attaques acridiennes, la performance insuffisante des économies. De nombreux pays enregistrent d'énormes déficits alimentaires. Une telle situation ne peut être améliorée qu'à partir de l'adoption de nouvelles technologies visant à l'obtention de meilleurs rendements. Dans cet ouvrage organisé en quatre chapitres, les auteurs se penchent sur les déterminants d'une meilleure productivité agricole. L'accent est surtout mis sur les aléas climatiques de ces dernières décennies, marquées par de fortes irrégularités saisonnières et une baisse régulière de la pluviométrie. Aux aléas climatiques s'ajoute le problème de la fertilité des sols caractérisé le plus souvent par un faible taux de matières organiques : carence en phosphore et en azote, complexe absorbant insuffisant, petite capacité de rétention en eau, etc. Enfin, dans les régions à forte densité de population ( exemples du Ghana et du Togo ), le taux de croissance démographique élevé agit négativement sur le potentiel foncier, caractérisé par la dégradation des ressources naturelles. Les auteurs exposent ici les réalités de ces facteurs déterminants pour la sécurité alimentaire, afin de permettre aux décideurs de mieux les intégrer à leur politique de développement du secteur agricole.

Download or read book Canadian Journal of Botany written by and published by . This book was released on 1999 with total page 996 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Abr g Des Publications written by Canadian Forest Service and published by . This book was released on 1997 with total page 64 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book American Journal of Botany written by and published by . This book was released on 2001 with total page 616 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Bananas and Plantains written by S. Gowen and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 589 pages. Available in PDF, EPUB and Kindle. Book excerpt: In a field of mature bananas, plants can be seen at all stages of vegetative growth and fruit maturity, providing a fascination for anyone who has an interest in growing crops. Banana farmers in the tropics can harvest fruit every day of the year. The absence of seasonality in production is an advantage, in that it provides a continuity of carbohydrate to meet dietary needs as well as a regular source of income, a feature that perhaps has been under-estimated by rural planners and agricultural strategists. The burgeoning interest in bananas in the last 20 years results from the belated realization that Musa is an under-exploited genus, notwithstanding the fact that one genetically narrow group, the Cavendish cultivars, supply a major export commodity second only to citrus in terms of the world fruit trade. International research interest in the diversity of fruit types has been slow to develop, presumably because bananas and plantains have hitherto been regarded as a reliable backyard source of dessert fruit or starch supplying the needs of the household, and in this situation relatively untroubled by pests, diseases or agronomic problems.

Download or read book Mededelingen written by and published by . This book was released on 1996 with total page 1262 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Classic references for earth science reading written by Léon Delbos and published by Editions BRGM. This book was released on 1997 with total page 350 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Transactions Soil chemistry Soil biology Soil mineralogy written by and published by . This book was released on 1964 with total page 1390 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Proceedings of the Caribbean Food Crops Society written by Caribbean Food Crops Society and published by . This book was released on 1985 with total page 360 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Onzi me r union du sous comit Ouest et Centre africain de corr lation des sols pour la mise en valeur des terres written by Food and Agriculture Organization of the United Nations and published by . This book was released on 1994 with total page 888 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Proceedings written by and published by . This book was released on with total page 1632 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Documentaci n de la FAO written by and published by . This book was released on 1995 with total page 106 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Transactions written by and published by . This book was released on 1966 with total page 1388 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Methods Manual for Forest Soil and Plant Analysis written by Y. P. Kalra and published by Northern Forestry Centre. This book was released on 1991 with total page 128 pages. Available in PDF, EPUB and Kindle. Book excerpt: Compilation of methods used for soil and plant analysis at the Analytical Services Laboratory of the Northern Forestry Centre.