Study on Assessing the Source of Thallium Contamination in Ground and Surface Waters in the Locality of Yamtenga (Burkina Faso): Correlation with Some Heavy Metal Ions | Chapter 1 | Current Research and Development in Chemistry Vol. 1

Thallium (Tl) is a non-essential element for human being and is considered as a highly toxic trace element at a concentration above 2 µg/L. To assess the source of thallium contamination in ground and surface waters in the locality of Yamtenga village (11°43’35.1” N and 00°11’50.8” W, Burkina Faso), chemical analyzes of thallium concentrations in the soils of Yamtenga village along with geological descriptions (geological map and hydrographic watershed map of the studied area) were undertaken. We found thallium concentrations in this area ranging from 1.61 mg / kg to 404.75 mg / kg. A zoned mineralization in thallium, due to the geological structure of the locality, was established in the soils, suggesting that the source of thallium contamination in ground and surface waters in the locality of Yamtenga village is of natural origin. The concentration of some heavy metals (Pb, Zn, Cd, Cu and Mn) were also evaluated in the soils of Yamtenga village and their concentration relationships with thallium were analyzed by the Pearson correlation coefficient based on matrix correlation. Moderate (0.554), low (0.408) and significant (0.999) correlations coefficients were obtained between thallium and lead, zinc, manganese respectively. Significant correlation coefficients (0.788 and 0.791) were also noted between thallium and copper, cadmium respectively. Thallium concentrations in ground and surface waters in this locality are mainly related to the interactions between water and source rocks, thallium being released following some alteration processes with other heavy metals elements especially manganese.

Author(s) Details

Ollé Rodrigue Kam
Laboratoire de Chimie Moléculaire et des Matériaux (LCMM)/Équipe Chimie Physique et Électrochimie, Université Joseph KIZERBO, UFR–SEA, 03 BP 7021 Ouagadougou 03, Burkina Faso

Corneille Bakouan
Laboratoire de Chimie Moléculaire et des Matériaux (LCMM)/Équipe Chimie Physique et Électrochimie, Université Joseph KIZERBO, UFR–SEA, 03 BP 7021 Ouagadougou 03, Burkina Faso.

Inoussa Zongo 
Centre National de la Recherche Scientifique et Technologique (CNRST), Laboratoire des Technologies de l’environnement et des Produits Naturels, Institut de Recherche en Sciences Appliquées et Technologies (IRSAT), 03 BP 7047 Ouagadougou 03, Burkina Faso.

Boubié Guel
Laboratoire de Chimie Moléculaire et des Matériaux (LCMM)/Équipe Chimie Physique et Électrochimie, Université Joseph KI-ZERBO, UFR–SEA, 03 BP 7021 Ouagadougou 03, Burkina Faso.

View Book: – http://bp.bookpi.org/index.php/bpi/catalog/book/162

Nutrient Cycling by Cover Crops in Vegetable Growing under Conservation Agriculture | Chapter 07 | Current Research in Agriculture and Horticulture Vol. 1

Nutrient cycling for crop production is desired to reduce environment impact, enhance nutrients use efficiency and reduce cost production.  Several agriculture techniques are available to support this possibility for grower and so give the sustainable production driving for the better nutrient using. Conservation Agriculture is a current system for crop production that provide this possibility and it is based in three agronomic principles that are minimum disturbance of soil or no-tillage for crop establishment, permanent residue on soil surface and crop rotation. In this context, cover crops is use as crop rotation in vegetable production and this possibilities the nutrients cycling, straw production to protect soil surface and improving in soil fertility, among another benefits to agricultural environment. Because your vigorous root growth they achieve nutrients that were being lost by leaching in the soil profile e come back to their shoot recycling nutrients into the system. After, nutrients will be mineralized and so available to the soil solution and crop nutrition. Many horticulturists around the world have been using successfully cover crops as crop rotation to get sustainable in their production and here in this work we approach some results that support rational using of cover crops for recycling nutrients in horticultural crops in the context of Conservation Agriculture. So we certified this efficient function of cover crops to straw production and nutrient recycling in some crop like tomato, broccolis and watermelon to get high yield with reduced environmental impacts and improvement of soil fertility.

Author(s) Details

Dr. Roberto B. F. Branco
Agência Paulista de Tecnologia dos Agronegócios (APTA/IAC), Ribeirão Preto-SP, Brasil.

Dr. Sally F. Blat
Agência Paulista de Tecnologia dos Agronegócios (APTA/IAC), Ribeirão Preto-SP, Brasil.

Tais G. S. Gimenes
Centro Universitário Moura Lacerda, Ribeirão Preto-SP, Brasil.

Dr. Rodrigo H. D. Nowaki
Universidade Estadual Paulista (UNESP-FCAV), Jaboticabal-SP, Brasil.

Dr. Humberto S. Araújo
Agência Paulista de Tecnologia dos Agronegócios (APTA), Andradina-SP, Brasil.

Dr. Fernando A. Salles
Agência Paulista de Tecnologia dos Agronegócios (APTA/IAC), Ribeirão Preto-SP, Brasil.

View Book:
http://bp.bookpi.org/index.php/bpi/catalog/book/124