PDF-LABILE AND STABLE FRACTIONS OF SOIL ORGANIC MATTER UNDER MANAGEMENT SY

Marcoby alterations in the different compartments The aim of this study was to evaluateof a dystrophic Red Latosol Oxisol The following properties were determinedorganic C associated with ag. Lesson two: Soils. Time to observe and learn. You will examine three types of soil:. Clay. Sand. Loam. You will need to read and follow the instructions carefully. After examining the soil types:. What are some ways we can classify soils?. Presented by. :. Shubhendu Dash. AVP-ACCESS Development Services. Effect of chemical fertilizers on soil. Before chemical fertilizers. After applying chemical fertilizers. Cementing effect. Living soil. Challenge. : . Growing food in degraded urban soil. Healthy soil is fundamental to agriculture.. For there to be significant improvements in . access to healthy food through urban agriculture . – soils must be productive.. Care for these RESOURCES. Starting with The Basics!. What is soil. Naturally deposited MIXTURE of:. R. ock particles. “Organic” materials. Air. Water. Soil Components. Soil Components. Air. = Mixture of atmospheric gases. Decomposition. Basic Decomposition Equation. Organic compound . O. 2. (or other electron acceptor). . . CO. 2. H. 2. O energy inorganic nutrients. . a form of. . Uppermost layer of earth’s crust that supports plants, animals and microbes. Soil Forming Factors. Parent Material. Time. Climate. Vegetation & Organisms. Topography. 1. Parent Material. Refers to the rock and minerals from which the soil derives.. How do you start describing the soil?. What do you see. ?. What is different from top to bottom?. How deep do roots go?. Soil Profile Descriptions. Soil Profile. - A vertical section of the soil extending . Objectives. Define: acidity, alkalinity, buffering capacity, soil pH. List and describe inherent factors that affect soil pH. Describe how to manage soil pH. Describe how soil pH affects soil function. 307B. Lecture 8. D. r. Mahmoud Nour El-Dein. Composition of Organic Matter. Soil organic matter plays important role in the maintenance and improvement of soil properties. It is a dynamic material and is one of the major sources of nutrient elements for plants. . Objectives. Define: soil respiration and soil microbes. Explain the role of soil respiration in determining soil health. Diagram the role of soil respiration in the cycle of life on earth. List and explain inherent factors that affect soil respiration. Objectives. Define: soil organic matter. Explain the role of inherent factors affecting soil organic matter. Explain the five soil organic matter management practices. Explain how soil organic matter relates to soil function. Cucumis. . melo. . L. . . inodorus. ). Nguyen . Van . Tam, . Ph.D. Thai Nguyen University of Agriculture and Forestry. Cell phone: (+84)986 879 896. Email: nguyenvantam@tuaf.edu.vn. 1. . Introduction. Tsuji Y., . Vanholme. R., . Tobimatsu. Y., Ishikawa Y., Foster C. E., . Kamimura. N., . Hishiyama. S., Hashimoto S., Shino A., Hara H., Sato-Izawa K., . Oyarce. P., . Goeminne. G., . Morreel. K., Kikuchi J., Takano T., Fukuda M., Katayama Y., . Hasanuddin. 1). , . Muyassir. 2). , . Muchlisin. 3). , . Abidin Nur. 4). and Kevin Fitzsimmon. 5).  . 1) . staf . of Brackish-water Aquaculture Development Center. , . Email : hasanuddin_79@yahoo.co.id.