Effects of herbicides on soil enzyme L-asparaginase activity

Authors

  • J Aruna Kumari College of Agriculture, Rajendranagar PJTSAU, Hyderabad 500030, Telangana, India
  • PC Rao College of Agriculture, Rajendranagar PJTSAU, Hyderabad 500030, Telangana, India
  • M Madhavi College of Agriculture, Rajendranagar PJTSAU, Hyderabad 500030, Telangana, India

DOI:

https://doi.org/10.3329/bjb.v49i4.52657

Keywords:

Pre-emergence herbicide, Post emergence herbicide, Soil enzyme, L-asparaginase

Abstract

To study the effect of new generation herbicides on soil enzyme L-asparaginase a field experiment was designed and carried out on maize as test crop. The weed management practices tested were two preemergence herbicides (pendimethalin and atrazine @ 1.0 kg a.i/ha each) and two post-emergence herbicides topramezone @ 25.2 g a.i/ha at 15 DAS,and tembotrione @ 105 g a.i/ha at 15 DAS and combine application of pre- and post emergent herbicides topramezone + atrazine @ 25.2 + 250 g a.i/ha at 15 DAS, tembotrione + atrazine @ 105 + 250 g a.i/ha was applied at 15 DAS and in addition to these the unweeded control and hand weeding (twice at 20 and 40 days) treatments. Soil samples were collected at 15 days intervals and enzyme activity was assayed. In pre-emergence herbicides, control, and hand weeding, there was an increase in the activity of the enzyme from 0 to 60 days and then decrease till harvest, whereas in post emergence herbicide both stimulation and inhibition were observed.

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Published

2020-12-31

How to Cite

Kumari, J. A., Rao, P., & Madhavi, M. (2020). Effects of herbicides on soil enzyme L-asparaginase activity. Bangladesh Journal of Botany, 49(4), 1177–1183. https://doi.org/10.3329/bjb.v49i4.52657

Issue

Section

Short Communications