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International Journal of Current Microbiology and Applied Sciences (IJCMAS)
IJCMAS is now DOI (CrossRef) registered Research Journal. The DOIs are assigned to all published IJCMAS Articles.
Index Copernicus ICI Journals Master List 2016 - IJCMAS--ICV 2016: 92.3 For more details click here
National Academy of Agricultural Sciences (NAAS) : NAAS Score: *5.38 (2017) [Effective from January 1, 2017]For more details click here
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National Academy of Agricultural Sciences (NAAS)
NAAS Score: *5.38 (2017)
[Effective from January 1, 2017]
For more details click here

ICV 2016: 92.3
Index Copernicus ICI Journals Master List 2016 - IJCMAS--ICV 2016: 92.3
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 2015: 85.95
NAAS RATING 2017: 5.38

Int.J.Curr.Microbiol.App.Sci.2017.6(3): 1058-1066
DOI: https://doi.org/10.20546/ijcmas.2017.603.122


Effect of Organic Manures and Weed Management Practices on Yield Attributes and Soil Enzyme Activities of Winter Irrigated Cotton
S. Marimuthu* and M. Mohamed Amanullah
Department of Agronomy, Tamil Nadu Agricultural University, Coimbatore - 641 003, India
*Corresponding author
Abstract:

Field experiment was conducted on a sandy loam soil during winter irrigated season of 2015-16 at Department of Farm Management, Tamil Nadu Agricultural University, Coimbatore to study the effect of various organic manures and weed control methods on yield attributes and soil enzyme activities of organic cotton cultivation. The experiment was laid out in strip plot design and replicated thrice. Treatments viz., farmyard manure, vermicompost, goat manure and composted poultry manure were assigned to main plot; while hand weeding, twin wheel hoe weeding, power weeding and weedy check were assigned to sub plot and replicated thrice. Weeding operations were done at 20 and 40 DAS. The results of this study showed that organic sources of nutrient and weed management practices, especially composted poultry manure and hand weeding at 20 and 40 DAS enhanced sympodial branches (19.52), fruiting points (54.24), number of bolls (20.65) and boll weight (4.71 g) which was comparable with application of composted poultry manure with power operated weeder weeding on 20 and 40 DAS. Significantly higher enzymes activities viz., phosphatase (39.15 µg of p-nitrophenol released g-1 soil h-1), dehydrogenase (6.47 µg of TPF released g-1 soil h-1) and urease (44.41 µg NH4+ g-1 soil h-1) were found in treatment of composted poultry manure along with hand weeding or power weeding twice on 20 and 40 DAS at harvesting stage. Based on the results, it can be concluded that composted poultry manure along with hand weeding or power weeder weeding in order to enhances soil organic carbon and microbial activity/diversity, which subsequently improve soil enzyme synthesis provide nutrients for crop growth and yield of organic cotton cultivation.


Keywords: Composted poultry manure, Hand weeding, Boll weight, Soil enzymes.
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How to cite this article:

Marimuthu, S. and Mohamed Amanullah, M. 2017. Effect of Organic Manures and Weed Management Practices on Yield Attributes and Soil Enzyme Activities of Winter Irrigated Cotton.Int.J.Curr.Microbiol.App.Sci. 6(3): 1058-1066. doi: https://doi.org/10.20546/ijcmas.2017.603.122