Saline Soil Reclamation | Problematic Soils & Their Management | Leaching, Drainage | Lecture 7
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Saline Soil Reclamation | Problematic Soils & Their Management | Leaching, Drainage | Lecture 7
325 просмотров · 2 недели назад
Soil & Agri IQ
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325 просмотров · 2 недели назад
🌱 Lecture 7: Reclamation of Saline Soil
Saline soils contain excessive amounts of soluble salts that can adversely affect seed germination, plant growth, soil-water relations, nutrient availability, and crop productivity. Effective reclamation aims to remove excess salts from the root zone and restore favourable conditions for sustainable crop production.
In Lecture 7 of the “Problematic Soils and Their Management” series, we discuss the major principles, methods, and management practices used for the reclamation and productive management of saline soils.
🌱 In this lecture, you will learn:
🔹 What is saline soil and why does salinity develop?
🔹 Important considerations before reclamation
🔹 Leaching or flushing of soluble salts
🔹 Leaching Requirement (LR) and its importance
🔹 Role of adequate drainage in salt removal
🔹 Surface and subsurface drainage
🔹 Physical/mechanical methods of reclamation
🔹 Scraping of salt crust
🔹 Deep ploughing and sub-soiling
🔹 Sanding and profile inversion
🔹 Irrigation water management
🔹 Cultural and agronomic practices
🔹 Furrow sowing under saline conditions
🔹 Use of suitable fertilizers and organic manures
🔹 Mulching and reduction of evaporation
🔹 Selection of salt-tolerant crops
🔹 Biological approaches and special situations for chemical amendments
🔹 Integrated management for restoring saline soils to productive agriculture
💧 Key Principle of Saline Soil Reclamation
Leaching moves soluble salts downward, while drainage removes salt-rich water from the soil profile.
Successful reclamation therefore requires an integrated approach involving good-quality irrigation water, effective leaching, adequate drainage, proper soil management, and suitable crop selection.
🎓 Useful for
B.Sc. Agriculture | M.Sc. Soil Science | ICAR-JRF | Agricultural Competitive Examinations | Soil Science Students | Farmers & Extension Professionals
📚 Subject: Problematic Soils and Their Management
🎬 Lecture: 7
🌱 Topic: Reclamation of Saline Soils
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