In the Andes, little is known about the relationships among current land uses and their effect on soil fertility. Corn (Zea mays L.) was used to evaluate soil quality for plant growth on soils of four land uses, along...
funded by the International Atomic Energy Agency(IAEA),Vienna,Austria,through a Coordinated Research Project(No.CRP D1.50.16)of the Soil and Water Management and Crop Nutrition Section,Joint FAO/IAEA Division of Nuclear Techniques in Food;Agriculture and through the Technical Cooperation Project(No.COS5031);by the University of Costa Rica(No.VI-802-B7-505)。
Urea is the most common nitrogen(N)fertilizer used in the tropics but it has the risk of high gaseous nitrogen(N)losses.Use of nitrification inhibitor has been suggested as a potential mitigation measure for gaseous N...
Incubation experiments were conducted to investigate the dynamics of low- molecufar-weight aliphatic acids in two andosols with and without plant materials. Results showed that amount of low- molecular-weight aliphati...