Sains Malaysiana 52(8)(2023): 2225-2235
http://doi.org/10.17576/jsm-2023-5208-05
Weed
Control Efficacy and Soil Activity of a New Promising Bioherbicide ‘WeedLock’
(Keberkesanan Kawalan Rumpai dan
Aktiviti Tanah 'WeedLock' Bioherbisida Baharu yang Berpotensi)
MAHMUDUL HASAN1,
ANIS SYAHIRAH MOKHTAR2, KHAIRIL MAHMUD1, ADAM MUSTAFA
ROSLI4, HAFIZUDDIN HAMDAN4, MST. MOTMAINNA1 & MUHAMMAD SAIFUL AHMAD-HAMDANI1,3,*
1Department of
Crop Science, Faculty of Agriculture, Universiti Putra Malaysia, 43400 UPM
Serdang, Selangor, Malaysia
2Department of
Plant Protection, Faculty of Agriculture, Universiti Putra Malaysia, 43400 UPM
Serdang, Selangor, Malaysia
3Laboratory of
Climate-Smart Food Crop Production, Institute of Tropical Agriculture and Food
Security, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor, Malaysia
4EntoGenex Industries Sdn. Bhd., 50480 Kuala Lumpur,
Malaysia
Diserahkan: 28 Mac
2022/Diterima: 4 Januari 2023
Abstract
The development of plant-based
bioherbicides has gained the interest of researchers and acceptability from the
farmers to control weeds in order to reduce their overdependence on chemical
herbicides. Therefore, this research investigated the efficacy and soil
activity of WeedLock, a new plant-based bioherbicide. In the efficacy study,
WeedLock was applied at 672.75, 1345.50 (recommended dose), 2691.00 L ha-1 over the untreated (control) on weeds in mixed- culture (Ageratum conyzoides L., Eleusine indica (L.) Gaertn., and Cyperus iria L). For soil activity, Zea mays L. seedlings were grown in different
soil textures, namely clay, sand, sandy clay loam, and peat soil and WeedLock
was applied to each soil type at 1345.50 L ha-1 with a pipette as a
soil drench method. After 21 days, the plants were harvested, including roots
and the soil in trays that were previously sprayed with WeedLock, and the trays
were further maintained for 1, 2, 4, 8, 12 and 16 weeks, respectively, before
new seedlings were grown on the same soil. WeedLock at 1345.50 L ha-1 showed severe
injury on weeds and produced 98.15% weed control efficacy compared to untreated
(control). For soil activity, WeedLock did not show any significant decrease in
growth and development of Z. mays, and the injury scale was 1.00, which
means all leaves of Z. mays remained green, and the plants were actively
growing on the WeedLock treated soils. Thus, it can be concluded that WeedLock
has excellent weed control efficacy with negligible soil activity.
Keywords:
Efficacy; soil activity; soil textures; WeedLock
Abstrak
Pembangunan bioherbisida berasaskan tumbuhan telah
menarik minat penyelidik dan penerimaan daripada petani untuk mengawal rumpai
bagi mengurangkan kebergantungan berlebihan mereka terhadap racun herba kimia. Oleh itu, penyelidikan ini mengkaji keberkesanan dan aktiviti tanah
WeedLock, bioherbisida baharu berasaskan tumbuhan. Dalam kajian keberkesanan, WeedLock telah digunakan pada 672.75, 1345.50
(dos yang disyorkan), 2691.00 L ha-1 ke atas yang tidak dirawat
(kawalan) pada rumpai dalam kultur campuran (Ageratum conyzoides L., Eleusine
indica (L.) Gaertn., dan Cyperus iria L). Untuk aktiviti tanah, anak benih Zea mays L. ditanam dalam tekstur tanah yang berbeza, iaitu tanah
liat, pasir, tanah liat berpasir serta tanah gambut dan WeedLock digunakan
untuk setiap jenis tanah pada 1345.50 L ha-1 dengan pipet sebagai
kaedah basah tanah. Selepas 21 hari,
tanaman dituai, termasuk akar dan tanah dalam dulang yang sebelum ini disembur
dengan WeedLock dan dulang terus dikekalkan masing-masing selama 1, 2, 4, 8, 12
dan 16 minggu, sebelum anak benih baru ditanam pada tanah yang sama. WeedLock pada
1345.50 L ha-1 menunjukkan kecederaan teruk pada rumpai dan
menghasilkan 98.15% keberkesanan kawalan rumpai berbanding yang tidak dirawat
(kawalan). Untuk aktiviti tanah, WeedLock tidak menunjukkan sebarang
penurunan ketara dalam pertumbuhan dan perkembangan Z. mays dan skala kecederaan ialah 1.00, yang bermaksud semua daun Z. mays kekal hijau dan tumbuhan sedang
tumbuh secara aktif pada tanah yang dirawat WeedLock. Oleh itu, boleh disimpulkan bahawa WeedLock mempunyai keberkesanan kawalan
rumpai yang sangat baik tanpa aktiviti tanah yang ketara.
Kata kunci: Aktiviti tanah; keberkesanan; tekstur tanah; WeedLock
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*Pengarang
untuk surat-menyurat; email: s_ahmad@upm.edu.my
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