Bio-Efficacy and Phytotoxicity of Glyphosate 41% SL on Weed Flora of Tea and its Effect on Soil Microbial Activities

Authors

  • Suresh Kumar Department of Agronomy, College of Agriculture, CSK Himachal Pradesh Krishi Vishvavidyalaya, Palampur-176 062
  • Neelam Sharma Department of Agronomy, College of Agriculture, CSK Himachal Pradesh Krishi Vishvavidyalaya, Palampur-176 062
  • Sandeep Manuja Department of Agronomy, College of Agriculture, CSK Himachal Pradesh Krishi Vishvavidyalaya, Palampur-176 062
  • Parita Department of Agronomy, College of Agriculture, CSK Himachal Pradesh Krishi Vishvavidyalaya, Palampur-176 062
  • Tamanna Bhalla Department of Agronomy, College of Agriculture, CSK Himachal Pradesh Krishi Vishvavidyalaya, Palampur-176 062

Keywords:

Bio-Efficacy, Glyphosate, Tea, All Clear, Weeds.

Abstract

A field experiment was conducted at the farmers’ field in Panchrukhi block of Kangra District (H.P.) during kharif 2019 to evaluate the bio-efficacy and phytotoxicity of glyphosate 41% SL in tea (Camellia sinensis). The experiment was laid out in a Randomized Block Design with ten treatments and was replicated thrice. The treatments comprised of six doses of a new formulation of glyphosate 41 % SL (All Clear, Anu Products Ltd.) 1.0, 2.0, 3.0, 4.0, 5.0 and 8.0 litre / ha, glyphosate 41 % SL (Roundup, Monsanto), glyphosate 71 % SG 3.0 kg / ha and weedy and weed free checks. Major weeds that were found to infest the experimental tea orchard included Erigeron canadensis, Ageratum conyzoides, Cynodon dactylon, Imperata cylindrica, Paspalum conjugatum and Polygonum alatum. The results revealed that in tea crop weeds can be effectively controlled with the application of glyphosate 41% SL (All Clear) 3.0 litre/ha and 4.0 litre/ha. No phytotoxicity symptoms on tea were observed at any of dose of herbicide.

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Published

2022-03-23

How to Cite

Kumar, S., Sharma, N., Manuja, S., Parita, & Bhalla, T. (2022). Bio-Efficacy and Phytotoxicity of Glyphosate 41% SL on Weed Flora of Tea and its Effect on Soil Microbial Activities. Himachal Journal of Agricultural Research, 47(2), 235–238. Retrieved from https://hjar.org/index.php/hjar/article/view/168996

Issue

Volume 47, Issue 2, December 2021

Section

Short Communication

References

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