Presentation1.S.HARISHKUMAR 22164107 SOIL ACIDITY AND LIMING MATERIAL USES

Soil acidity is a potentially serious land degradation issue. When soil becomes too acidicWithout treatment, soil acidification can impact agricultural productivity and sustainable farming systems. Acidification can also extend into subsoil layers, posing serious problems for plant root development and remedial actionSoil pH will influence both the availability of soil nutrients to plants and how the nutrients react with each other.

For example:

At a low pH, many elements become less available to plants, while others such as iron, aluminum and manganese become toxic to plants. Aluminum, iron and phosphorus also combine to form insoluble compounds.
At a high pH, calcium ties up phosphorus, making it unavailable to plants, and molybdenum becomes toxic in some soils. Boron may also be toxic in some soils.

1. SAC202- PROBLEMATIC SOILS AND THEIR MANAGEMENT 2(2+0) SOIL ACIDITY AND EFFICIENCY OF LIMING MATERIALS

2. SOIL ACITIDY Soil acidity is a condition in which the soil pH is lower than a neutral pH (less than 7). Soil pH is a measure of the hydrogen (H+) ion concentration expressed

3. LIME APPLICATION The high quality lime should be finely crushed, evenly spread and incorporated into the part of the soil where acidity is a problem. Lime moves very slowly through the soil. Incorporation is recommended where possible and where erosion risk is low.

4. FURROW APPLICATION OF LIME

5. LIME REACTION Lime (calcium carbonate) and other liming sources such as dolomite reduces soil acidity by neutralizing acid reactions in the soil The carbonate component reacts with hydrogen ions in the soil solution and in doing so raises the soil pH. The reaction of an acid and a base is called a neutralization reaction

6. LIMING MATERIAL Increase available of N,K,Ca,Mg etc.. Increase the fertilizer effectiveness. Decrease plant diseasesand check soil erosion. Improve the microorganisms activity in soil Improve the physical condition of the soil

7. COMMON LIME MATERIALS

8. F ew crops that prefer acidic soil Parsley. Peanut. Potato. Radish. Raspberry. Strawberry. Sweet potato. Tomato.

9. LIME REQUIREMENT(LR) Amount of pure lime LR= ______________________x100 Calcium carbonate equivalent