Effect of Defoliation on Growth and Yield of Maize

Authors

  • MN Jahan Department of Crop Physiology and Ecology, Faculty of Agriculture, Hajee Mohammad Danesh Science and Technology University, Dinajpur–5200, Bangladesh
  • MA Hasan Department of Crop Physiology and Ecology, Faculty of Agriculture, Hajee Mohammad Danesh Science and Technology University, Dinajpur–5200, Bangladesh
  • MR Islam Department of Crop Physiology and Ecology, Faculty of Agriculture, Hajee Mohammad Danesh Science and Technology University, Dinajpur–5200, Bangladesh

DOI:

https://doi.org/10.3329/baj.v25i2.65927

Keywords:

Defoliation, green fodder, light intensity, SPAD value, Zea mays

Abstract

The experiment was conducted to evaluate the effect of defoliation on grain and fodder yield of maize at the research field and laboratory of Crop Physiology and Ecology Department, Hajee Mohammad Danesh Science and Technology University, Dinajpur during the period of December 2018 to June 2019. The trial was carried out in a randomized completely block design with three replications. The experimental treatments were: T1– Control (without leaf removal), T2–Defoliating all leaves except ear and adjacent two leaves above the ear at 7 days after silking (DAS), T3–Defoliating all leaves except ear and adjacent two leaves above the ear at 14DAS, T4–Defoliating all leaves below the ear at 7 DAS, T5–Defoliating all leaves below the ear at 14 DAS, T6– Detopping except two leaves above the ear at 7 DAS and T7–Detopping except two leaves above the ear at 14 DAS. Light intensity was increased (66.9 to 81.05%) when only lower leaves (T5) or both upper and lower leaves (T2) were removed, but when only the upper leaves (T6) were removed it was not increased. SPAD value was increased (13.58 to 24.5%) but number of leaves and leaf area plant-1 were reduced (60.5 to 63.09% and 64.4%) due to defoliation. Substantial amount of green fodder was obtained (0.776 Kg m-2) due to defoliation of maize. Grain yield of maize was reduced (5.56 to 21.83%) due to different defoliation treatments but the yield reduction was not significant when only lower (T4) or upper (T7) leaves were removed.

Bangladesh Agron. J. 2022, 25(2): 31-41

Downloads

Download data is not yet available.
Abstract
42
PDF
85

Downloads

Published

2023-05-07

How to Cite

Jahan, M., Hasan, M., & Islam, M. (2023). Effect of Defoliation on Growth and Yield of Maize. Bangladesh Agronomy Journal, 25(2), 31–41. https://doi.org/10.3329/baj.v25i2.65927

Issue

Vol. 25 No. 2 (2022)

Section

Original Articles

License

Copyright (c) 2022 MN Jahan, MA Hasan, MR Islam

Creative Commons License

This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Authors who publish with this journal agree to the following terms:

  1. Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
  2. Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.
  3. Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work (See The Effect of Open Access).