Saline soil Tag

30 Nov

Posted at 04:39h in Miscellaneous

Saline soil: Alternative natural resources for fodder production लवणीय मृदा समस्‍याग्रस्‍त मृदाएं में से एक है जिसको उचित प्रयास एवं प्रबंधन के साथ वनस्‍पति आवरण के तहत लाया जा सकता है । प्राकृतिक कारणों की वजह एवं उचित प्रबंधन न मिलने से विकृत हो जाती है । इन मृदाओं में कुछ गुणों के अधिकता एवं कमी के होने के कारण इसे खेती के लिए उपयुक्‍त नहीं माना जाता है । हमारे देश का भौगोलिक क्षेत्रफल 329 मिलियन हेक्‍टेयर है जिसमें 173.65 मिलियन हेक्‍टेयर मृदा समस्‍याग्रस्‍त है । इसमें से 25 मिलियन हेक्‍टेयर खाद्य फसल की खेती के लिए उपयुक्‍त नहीं है जिसमें 5;5 मिलियन हेक्‍टेयर लवणीय मृदा भी शामिल है । अतिरिक्‍त...

11 Apr

Posted at 07:04h in Soil & Fertilizers

रासायनि‍क रूप से वि‍कृत भारतीय मृदाओं का प्रबन्‍धन।  Chemical deterioration of soils is a type of soil degradation that involves loss of nutrients or organic matter, salinity, acidification, soil pollution and fertility decline. The removal of nutrients reduces the capacity of soils to support plant growth and crop production and causes acidification. In arid and semi-arid areas problems can arise due to accumulation of salts, which impedes the entry of water in plant roots. Chemical deterioration of soils is often also due to agricultural over exploitation, relying solely on replenishing nutrient losses through harvesting by artificial chemical fertilizers. Indiscriminate irrigation for getting higher yield has led to water logging; nutrient losses and increased salinity of lands threatened the sustainability of crop yields. The increasing salinization of...

09 Oct

Posted at 08:47h in Soil & Fertilizers

समस्याग्रस्त मिट्टी का प्रबंधन कैसे करें For the management of problematic soils,  some general principles has to be considered for proper implementation of the reclamation measures. The total soluble salt concentrations in the root zone have to be decreased to control osmotic effects on plant growth. Maintenance of total soil moisture tension must be ensured at optimum level so that plant roots can absorb an adequate amount of water. Water flows through the soil in the direction of maximum decrease of hydraulic head and the flow velocity is proportional to the hydraulic gradient. The design and layout of drainage system are controlled by this principle. The availability of good quality water is of paramount for...