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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 (2020)
[Effective from January 1, 2020]
For more details click here

ICV 2018: 95.39
Index Copernicus ICI Journals Master List 2018 - IJCMAS--ICV 2018: 95.39
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 2018: 95.39
NAAS RATING 2020: 5.38

Int.J.Curr.Microbiol.App.Sci.2020.9(2): 365-380
DOI: https://doi.org/10.20546/ijcmas.2020.902.046


Soil Fertility Status in Coconut after Long-term Drip Fertigation
 in Indo-gangetic Plain of South Bihar Alluvial Zone(a)
Avinash Sarin Saxena1*, Sankar Chandra Paul1, Amit Kumar Pradhan1, Rajiv Rakshit1, Ruby Rani2, Deepak Ranjan Kishor3 and Chandan Kumar Bagchi2
1Department of Soil Science and Agricultural Chemistry, Bihar Agricultural University, Sabour, Bhagalpur, India
2Department of Horticulture (Fruit & Fruit Technology), Bihar Agricultural University, Sabour, Bhagalpur, India
3Department of Entomology, Dr. Rajendra Prasad central Agricultural University, Pusa, Samastipur, Bihar, India
*Corresponding author
Abstract:

It was reported that water resources and ground water reduces day by day but its consumption in different sector increases rapidly. In India agriculture is largest water consumer (81%) sector (WRI, 2007) and use of water in an efficient way is demand of time. It has been scientifically recognized that adoption of drip fertigation method is an option for efficient use of water and nutrients through improvement in crop yield per unit volume of water and nutrients used (Bar-Yosef, 1999; Patel and Rajput, 2011). Drip fertigation allows continuous irrigation and fertilizer injection into the root zone. Soil physicochemical properties are important aspects of soil quality that can change with long-term drip irrigation due to physical and chemical stress evidence of soil structural decline, such as increased bulk density under drip irrigation has been reported (Clark, 2004). Moreover, drip irrigation whereby a certain portion of the soil is wetted also causes the spatial variability of soil physical and hydraulic properties. Therefore, evaluation of spatial variability of soil characteristics and the vertical distribution of nutrients in soil under drip fertigation system can act as a very useful tool for the determination of fluctuations in soil behavior, especially its nutrient supplying capacity. Keeping the above facts in mind, the present investigation was carried out to know the soil fertility status under long-term drip fertigation system in coconut under All India Coordinated Research Project on coconut variety Shakhi Gopal Tall with long term drip fertigation system in BAU, Sabour under following treatments viz. T1 = Control, T2 = 25% of the recommended dose of NPK fertilizers (RDF) through drip system, T3 = 50% of the RDF through the drip system, T4 = 75% of the RDF through the drip system, T5 = 100% of the RDF through the drip system, T6 = 100% of the RDF through soil application. The results indicated that bulk density, particle density and pore space of soils were found to have no significant difference among the treatments and across different soil depths. Bulk density, particle density and pore space varied from 1.41 to 1.47 Mg m-3, 2.23 to 2.25 Mg m-3, and 31.9 to 36.6%, respectively, among all soils. Void ratio varied from 0.51 to 0.59 over all the soils. Void ratio and air-filled porosity were not significantly different among the treatments but significant difference was observed across the soil depths. Maximum water holding capacity of soils under different treatments across varying soil depths was not significantly different from each other. Soil pH and EC of all the treatments was not significantly different but decreased significantly with increasing soil depths. All the treatments for CEC and organic carbon content of soils were not found to be significantly different and depth-wise were significantly different. Organic carbon content varied significantly among all the treatments and also across the varying soil depths. Available nitrogen, phosphorus and potassium content were low, medium and low to medium respectively. All the treatments were significantly different for available nitrogen, phosphorus and potassium content in soil. Highest content of these three nutrients was found in T5 treatment. Sulphur content in soil was border of medium and all the treatments were at par. All the treatments values were not significantly different for available sulphur content in soil. Total nitrogen and potassium content in all the treatments were significant different but total phosphorus and sulphur content were not significantly different. Iron, manganese, zinc, copper and boron content in all the treatment were not significantly different from each other. Dehydrogenase activity of studied soil was increasing significantly with increasing levels of fertilizer in the treatments and was decreasing significantly across the soil depths. Majority of the physicochemical and biological properties of soil under the different fertigation levels do not differ significantly.


Keywords: Physicochemical hydraulic, fertigation ,drip organic carbon
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How to cite this article:

Avinash Sarin Saxena, Sankar Chandra Paul, Amit Kumar Pradhan, Rajiv Rakshit, Ruby Rani, Deepak Ranjan Kishor, Chandan Kumar Bagchi. 2020. Soil Fertility Status in Coconut after Long-term Drip Fertigation in Indo-gangetic Plain of South Bihar Alluvial Zone(a).Int.J.Curr.Microbiol.App.Sci. 9(2): 365-380. doi: https://doi.org/10.20546/ijcmas.2020.902.046