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Citrus nutrition research in India: Current status and future strategies

Indian Agricultural Research Journals

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Title Citrus nutrition research in India: Current status and future strategies
 
Creator Srivastava, A K
Singh, Shyam
 
Subject Nutrient diagnostics; Interpretation tools; Fertigation; Variable rate technology; Site specific
nutrient management
 
Description Diagnosis of nutrient constraints and their management are the two pillars of citrus nutrition programme with ultimate objective of fertilizer use efficiency. Leaf analysis-based diagnostic norms emerging through researches on different commercial citrus cultivars have revealed 1.52-2.80% N, 0.09-0.17% P, 0.96-2.59%K, 1.73-3.43% Ca, 0.24-0.69% Mg, 69.5-249.0 ppm Fe, 21.0-87.6 ppm Mn, 2.1-17.6 ppm Cu, and 11.6-62.0 ppm Zn as optimum values. Using diagnosis and recommendation integrated system, nutrient constraint diagnosis can further be made possible at any stage of crop development without loosing the precision of application. The occurrence of cultivarlregion specific multiple nutrient deficiencies in citrus orchards is a common sight depending upon cultivar adopted to specific soil and climate. The fertilizer management of citrus orchards in recent past has found a new look in terms of automated fertigation (fertilizer requirement of 600 g N - 200 g P - 100 g Wtree with basin irrigation reduced to 400 g N - 140 g P - 70 g Wtree through irrigation) organic cultivation through microbially enriched organic manuring, site specific nutrient management (1200 g N - 600 g P - 600 g K-75 g Zn - 30 g B - 75 g Fe - 75 g Mnltreelyear on Typic Ustorthent and 600 g N - 400 g P - 300 g K-75 g Zn - 30 g B - 75 g Fe - 75 g Mnltreelyear on Typic Haplustert) using geostatistically defined soil variability within an orchard and variable rate application technology, all to be integrated to develop a precision-based citriculture, in addition to conventional integrated nutrient management.
 
Publisher The Indian Journal of Agricultural Sciences
 
Date 2008-01-05
 
Type info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Peer-reviewed Article
 
Format application/pdf
 
Identifier http://epubs.icar.org.in/ejournal/index.php/IJAgS/article/view/9758
 
Source The Indian Journal of Agricultural Sciences; Vol 78, No 1 (2008)
0019-5022
 
Language eng
 
Relation http://epubs.icar.org.in/ejournal/index.php/IJAgS/article/view/9758/4326
 
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