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International Journal of Current Microbiology and Applied Sciences (IJCMAS)
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National Academy of Agricultural Sciences (NAAS)
NAAS Score: *5.38 (2019)
[Effective from January 1, 2019]
For more details click here

ICV 2017: 100.00
Index Copernicus ICI Journals Master List 2017 - IJCMAS--ICV 2017: 100.00
For more details click here

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PRINT ISSN : 2319-7692
Online ISSN : 2319-7706
Issues : 12 per year
Publisher : Excellent Publishers
Email : editorijcmas@gmail.com / submit@ijcmas.com
Editor-in-chief: Dr.M.Prakash
Index Copernicus ICV 2017: 100.00
NAAS RATING 2018: 5.38

Int.J.Curr.Microbiol.App.Sci.2018.7(2): 398-410
DOI: https://doi.org/10.20546/ijcmas.2018.702.051


Effect of Potassium-Boron Content of Leaf on Copra Yield of Coconut (Cocos nucifera L.) in Terai Region of West Bengal, India
N. Sathi Babu1*, P.S. Medda1, K.Sinha2 and A. Ghosh3
1Department of Plantation Crops and Processing
2Department of Soil Science and Agriculture Chemistry
3Department of Agriculture Statistics, Uttar Banga Krishi Viswavidyalaya, West Bengal, India
*Corresponding author
Abstract:

Wide spread potassium and boron deficiency in coconut (Cocos nucifera L.) is a limiting factor for increased nut production in terai region of West Bengal. Accordingly, an experiment was undertaken in a 7.5 m x 7.5 m spaced 11 years old coconut plantation (cv. ECT) laid out in Factorial randomized block design with 9 treatments and 4 replications with graded levels of potassium (900, 1200 and 1500 g of K2O per palm) and boron (25, 50, and 100 g borax/palm) for two consecutive years (2014-15 and 2015-16) to study the influence of leaf potassium and boron on copra yield in coconut in the region. The leaf samples collected from the index leaf (14th frond) was taken for analysis of boron and potassium content at 6 and 12 months after soil application of both the nutrients. The results revealed that both leaf boron and potassium content increased significantly with increasing levels of applications. However, the intermediate dose of both the nutrients recorded the highest copra yield production (15.74 kg per palm per year or 2.72 tonnes per ha per year) when leaf potassium and boron were 1.97% and 24.52 mg/kg, respectively. With further increase in the rate of application of the nutrients, there was a decline in copra yield, despite an increase in the respective nutrient content in the leaves. The interaction effect also revealed the same trend. The copra yield production thus showed a positive correlation with increased content of leaf potassium and boron upto a certain level. And, both the nutrients produced a negative effect at ‘more than optimum’ doses in respect of copra yield.


Keywords: Potassium-boron, leaf, Coconut (Cocos nucifera L.), Terai
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How to cite this article:

Sathi Babu, N., P.S. Medda, K. Sinha and Ghosh, A. 2018. Effect of Potassium-Boron Content of Leaf on Copra Yield of Coconut (Cocos nucifera L.) in Terai Region of West Bengal.Int.J.Curr.Microbiol.App.Sci. 7(2): 398-410. doi: https://doi.org/10.20546/ijcmas.2018.702.051