Effects of Sesbania Mulch and No-Tillage Practices on Weed Management and Yield of Forage Corn
Resource
中華民國雜草學會會刊 23(1), 13
Journal
中華民國雜草學會會刊,23(1)
Journal Issue
13
Pages
-
Date Issued
2002-06
Date
2002-06
Author(s)
Chiu, Yi-Chuan
Tsai, Wen-Fu
DOI
20060927123024757691
Abstract
This experiment was conducted to investigate the effect of sesbania
(Sesbania roxburghii Merr.) mulch and no-tillage practices on the agronomic
characters, weed coverage, yield and forage quality of forage corn (Zea may L, cv.
Tainan 19) at the Agriculture Experimental Farm, National Taiwan University.
The cover crop sesbania was seeded immediately after the first crop of rice
harvested. After two months of growth, it was killed by the herbicide glyphosate
and used for mulch. The forage corn was then planted without tillage. Two
preemergence herbicides, alachlor and atrazine, applied as tank-mix, were also
included in the experiment.
During the growth period of forage corn, broadleaf weed species were found
dominant in the field, such as alligator alternanthera (Alternanthera philoxeroides),
nodding burnweed (Erechites valerianaefolia), black nightshade (Solanum nigrum)
and thorn amaranth (Amarathus spinosus). The grass weeds such as barnyardgrass
(Echinochloa crusgalli), goosegrass (Eleusine indica) were also found but less in
number. Weed coverage was lowest (4~5%) in no-tillage treatment in combination
with the application of preemergence herbicides. No-tillage and sesbania mulch
treatment without the application of preemergence herbicides also obtained a
relatively low weed coverage (11.7%). These results indicated that cover crop
mulch and no-tillage treatments could reduce weed growth in the corn field.
The plant and ear heights, chlorophyll content, and total digestible nutrient of
forage corn were not different significantly among treatments. Sesbania mulch in
combination with no-tillage practice obtained the highest fresh yield of 43.2
Mg/ha. It was also found that forage corn plants contained relatively higher
nitrogen in all the sesbania mulch treatments.
Subjects
Forage corn
mulch
no-tillage
sesbania
weed coverage
Publisher
臺北市:國立臺灣大學農藝學系
Type
journal article
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