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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
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Editor-in-chief: Dr.M.Prakash
Index Copernicus ICV 2017: 100.00
NAAS RATING 2018: 5.38

Int.J.Curr.Microbiol.App.Sci.2019.8(10): 261-267
DOI: https://doi.org/10.20546/ijcmas.2019.810.027


Influence of Weed Management Practices on Uptake of Nutrients by Kharif Sorghum [Sorghum bicolor (L.) Moench] and its Effect on Soil Fertility Status
S.S.  Vinayaka1, D. Krishnamurthy1*, A. S. Channabasavanna2, Y. M. Ramesha3 and Manjunath Bhanuvalli4
1Department of Agronomy, AICRP on Sorghum, ARS, Hagari, India
2Department of Agronomy, Directorate of Research, UAS, Raichur, India
3Department of Agronomy, ARS, Dhadesugur, India
4Department of Soil Science, Agricultural Extension Education Centre, Hadagali, University of Agricultural Sciences, Raichur-584 104, India
*Corresponding author
Abstract:

A field experiment was conducted at Agricultural Research Station, Hagari, Ballari during Kharif season of 2018on deep black soil. The experiment was laid out in randomized block design and repeated thrice with twelve treatments. Significantly higher uptake of nitrogen, phosphorus and potassium (219, 56.5 and 147.4 kg ha-1) was recorded with atrazine 50 WP @ 0.50 a.i. kg ha-1fb 2,4-D Ethyl Ester 38 EC @ 0.90 a.i. kg ha-1 as PoE at 30 DAS and it was on par with hand weeding at 20 DAS and 1 IC at 40 DAS (215, 55.2, and 145.7 kg ha-1, respectively) and 2,4-D Ethyl Ester 38 EC @ 0.90 kg a.i. ha-1 as PoE at 30 DAS fb 1 IC at 40 DAS (211, 54.9, and 143.7 kg ha-1, respectively. Nitrogen, phosphorous and potassium availability in the soil was significantly higher with weed free (IC at 20 & 40 DAS and HW at 30 DAS) (194, 47.6, and 219.9 kg ha-1, respectively) treatment. Among other weed management practices, sequential pre-emergence application of atrazine 50 WP @ 0.50 kg a.i. ha-1 fb 2,4-D Ethyl Ester 38 EC @ 0.90 kg a.i. ha-1 as PoE at 30 DAS recoded significantly higher availability of nitrogen, phosphorous and potassium in the soil (177, 42.2, and 213.8 kg ha-1, respectively) and it was on par with hand weeding at 20 DAS and 1 IC at 40 DAS (173, 41.7, and 212.1 kg ha-1, respectively) and 2,4-D Ethyl Ester 38 EC @ 0.90 kg a.i. ha-1 as PoE at 30 DAS fb 1 IC at 40 DAS (170, 39.9, and 211.9 kg ha-1, respectively).


Keywords: Polebean, Tillage, Nutrient uptake and microbial population
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How to cite this article:

Vinayaka, S. S., D. Krishnamurthy, A. S. Channabasavanna, Y. M. Ramesha and Manjunath Bhanuvalli. 2019. Influence of Weed Management Practices on Uptake of Nutrients by Kharif Sorghum [Sorghum bicolor (L.) Moench] and its Effect on Soil Fertility Status.Int.J.Curr.Microbiol.App.Sci. 8(10): 261-267. doi: https://doi.org/10.20546/ijcmas.2019.810.027