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Relationship among different forms of soil potassium and availability as influenced by the contrasting management practices in apple (Malus domestica Borkh.) orchards of Kumaon region

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Title Relationship among different forms of soil potassium and availability as influenced by the contrasting management practices in apple (Malus domestica Borkh.) orchards of Kumaon region
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Creator Debnath S, Attri B L, Kumar A, Bhat S C, Kishor A, Narayan R and Singh D B
 
Subject Apple, Fertilizer management practice, Forms of K, Kumaon region, K deficiency
 
Description Not Available
The distribution of K forms (water soluble, exchangeable, non-exchangeable, mineral and total K) in two apple(cv. Royal Delicious) orchards differing in fertilizer management practices located in the Kumaon region ofUttarakhand was investigated. The apple orchard at Mukteshwar is managed by the conventional fertilizermanagement practice, and the other at Dutkanedhar is managed organically. At Mukteshwar, the distribution ofwater soluble, exchangeable, non-exchangeable, mineral and total K was 0.23, 0.86, 5.46, 78.2, and 86.7 cmolkg-1, respectively.Further, soil analysis revealed that both the soils contain very high levels of available K (>350mg kg-1). Leaf K content in orchard of Dutkanedhar was deficient (0.81%) with the appearance of K deficiencysymptoms as necrotic leaf edges; whereas, the same at Mukteshwar was recorded as sufficient (1.93%). Thepositive and significant correlations were observed between available and water soluble (r= 0.78), available andexchangeable (r= 0.45), exchangeable and non-exchangeable (r= 0.33), non-exchangeable and mineral (r=0.77) and mineral and total K (r= 0.95) in the orchard of Mukteshwar. It was concluded that K requirement inapple could not be satisfied entirely through addition of organic manures only, and thus, K fertilization isindispensable.
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Date 2018-11-29T10:03:32Z
2018-11-29T10:03:32Z
2017-01
 
Type Research Paper
 
Identifier The Bioscan 12(1): 477-484, 2017 (Supplement on agronomy)
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http://krishi.icar.gov.in/jspui/handle/123456789/14142
 
Language English
 
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Publisher Not Available