[article]
| Title : |
Effects of spacing and weed management practices in winter maize in Rampur, Chitwan |
| Material Type: |
printed text |
| Authors: |
P. Gurung, Author ; S. Dhakal, Author ; S. Marahatta, Author ; J. B. Adhikari, Author |
| Publication Date: |
2020 |
| Article on page: |
77-84 p. |
| Languages : |
English (eng) |
| Keywords: |
Mulch, weed dynamics, weed control efficiency, weed index |
| Abstract: |
Maize is sensitive to weed infestation; losses in crop yield vary from 28-100%. Manual weeding is the most dominant
method in Nepal, however, a majority of the farmers still does not adopt any specific method of weed control. An experiment
was conducted to evaluate the influence of plant spacing and weed management practices on weed dynamics and yield of
maize, during the winter season of 2016/17 at National Maize Research Program (NMRP), Rampur, Chitwan, Nepal. The
experiment was done using split plot design with three replication; main plot factor was plant density (66666 and 83333
plants/ha),and sub-plot factors was weed management practices viz. weedy check, weed-free, two hand weeding at 30 and
60 DAS, rice straw mulch, black plastic mulch, Atrazine @ 0.75 kg a.i./ha + Pendimethalin @ 0.5 kg a.i./ha, Atrazine @
0.75 kg a.i./ha + Pendimethalin @ 0.5 kg a.i./ha followed by hand weeding at 30 DAS, and Atrazine @ 0.75 kg a.i. /ha +
Pendimethalin @ 0.5 kg a.i./ha followed by 2,4-D @1.5 L a.i./ha at 35 DAS. The plant density did not show significant effect
on weed density, weed dry weight, Weed Control Efficiency, Weed Index, and grain yield. Use of black plastic mulch was the
most effective to reduce weed density and dry weight. The higher Weed Control Efficiency (97.7, 96.4, 95.9 and 89.6% at 30,
60, 90 DAS and at harvest), and lower Weed Index (-2.9%) were also found with the use of black plastic mulch. As compared
to weed-free condition, weed caused grain yield loss up to 61.5% in the weedy condition. Accordingly, highest grain yield
was achieved with the use of black plastic mulch (5.1 t ha-1) followed by weed-free (5.0 t ha-1) condition and with the use of
rice straw as mulch (4.7 t ha-1). This information could be useful in developing weed management packages in maize. |
| Link for e-copy: |
https://afu.edu.np/sites/default/files/9._Effects_of_spacing_and_weed_management [...] |
in Journal of Agriculture and Forestry University > Volume 3 (2019) . - 77-84 p.
[article] Effects of spacing and weed management practices in winter maize in Rampur, Chitwan [printed text] / P. Gurung, Author ; S. Dhakal, Author ; S. Marahatta, Author ; J. B. Adhikari, Author . - 2020 . - 77-84 p. Languages : English ( eng) in Journal of Agriculture and Forestry University > Volume 3 (2019) . - 77-84 p.
| Keywords: |
Mulch, weed dynamics, weed control efficiency, weed index |
| Abstract: |
Maize is sensitive to weed infestation; losses in crop yield vary from 28-100%. Manual weeding is the most dominant
method in Nepal, however, a majority of the farmers still does not adopt any specific method of weed control. An experiment
was conducted to evaluate the influence of plant spacing and weed management practices on weed dynamics and yield of
maize, during the winter season of 2016/17 at National Maize Research Program (NMRP), Rampur, Chitwan, Nepal. The
experiment was done using split plot design with three replication; main plot factor was plant density (66666 and 83333
plants/ha),and sub-plot factors was weed management practices viz. weedy check, weed-free, two hand weeding at 30 and
60 DAS, rice straw mulch, black plastic mulch, Atrazine @ 0.75 kg a.i./ha + Pendimethalin @ 0.5 kg a.i./ha, Atrazine @
0.75 kg a.i./ha + Pendimethalin @ 0.5 kg a.i./ha followed by hand weeding at 30 DAS, and Atrazine @ 0.75 kg a.i. /ha +
Pendimethalin @ 0.5 kg a.i./ha followed by 2,4-D @1.5 L a.i./ha at 35 DAS. The plant density did not show significant effect
on weed density, weed dry weight, Weed Control Efficiency, Weed Index, and grain yield. Use of black plastic mulch was the
most effective to reduce weed density and dry weight. The higher Weed Control Efficiency (97.7, 96.4, 95.9 and 89.6% at 30,
60, 90 DAS and at harvest), and lower Weed Index (-2.9%) were also found with the use of black plastic mulch. As compared
to weed-free condition, weed caused grain yield loss up to 61.5% in the weedy condition. Accordingly, highest grain yield
was achieved with the use of black plastic mulch (5.1 t ha-1) followed by weed-free (5.0 t ha-1) condition and with the use of
rice straw as mulch (4.7 t ha-1). This information could be useful in developing weed management packages in maize. |
| Link for e-copy: |
https://afu.edu.np/sites/default/files/9._Effects_of_spacing_and_weed_management [...] |
|
Refine your search Apply to external sourcesEffects of spacing and weed management practices in winter maize in Rampur, Chitwan / P. Gurung in Journal of Agriculture and Forestry University, Volume 3 (2019)
