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Prospects and challenges in utilization of indigenous rocks and minerals as source of potassium in farming

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Title Prospects and challenges in utilization of indigenous rocks and minerals as source of potassium in farming
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Creator Abhay Omprakash Shirale, Bharat Prakash Meena, Priya Pandurang Gurav, Sanjay Srivastava, Ashis Kumar Biswas, Jyoti Kumar Thakur, Jayaraman Somasundaram, Ashok Kumar Patra, Annangi Subba Rao
 
Subject feldspar, glauconite, indigenous K minerals, K uptake, mica, nepheline, potassium, potassium mining
 
Description Not Available
Potassium (K) is one of the essential nutrients required by crops in large quantities; however, its use in agriculture by farmers is less than required in developing countries. This neglect has led to excess mining of K in soils by crop plants and has resulted in a negative balance of K in soils. This loss necessitates the need of more use of potassium fertilizers in agriculture. Rocks and minerals offer a potential fertilizer to utilize in agriculture as source of K. The crop trials revealed that feldspar, mica, glauconite, nepheline and shoenite are good sources of K for crops, especially in highly weathered acid soils. However, some researchers have reported no agronomic benefit of feldspar or granite rock application to crops. Overall the size modification, acidulation, microbial inoculants and preparation of K-enriched compost are the effective techniques to utilize K-bearing rocks and minerals. Very limited information is available on these aspects. Thus, in this review, an attempt has been to consolidate up-to-date information of indigenous rocks and minerals as possibilities for alternate sources of K for crop plants. Moreover, this area of research needs attention to utilize indigenous K sources, which can aid to limit the import and cost, of the establishment of potash fertilizer-based industries in developing countries
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Date 2019-11-30T06:11:36Z
2019-11-30T06:11:36Z
2019-03-09
 
Type Research Paper
 
Identifier Not Available
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http://krishi.icar.gov.in/jspui/handle/123456789/25983
 
Language English
 
Relation Not Available;
 
Publisher Taylor & Francis