Glyphosate Potassium Salt Dosage Efficacy to Weed Control in Guava Plants

Yusuf, Mukhtar; Tampubolon, Koko; Si, Fransisca Natalia; Siburian, Elseria; Purba, Zavandri; Wagino,; Sulast, Yustina Sri; Manu, Ida Rumia; Pratomo, Bayu; Karim, Syahibal; Septia, Sony Tri; Supriyadi, Supriyadi; Gusti, Lanna Reni; Har, Fitra Syawal

doi:10.3923/ajps.2020.487.494

Cited by 3 publications

(1 citation statement)

References 12 publications

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“…Olorunmaiye et al (2011) reported high concentration of broadleaf weeds underneath the canopies of adult citrus trees. Alridiwirsah et al (2020) also reported similarly that there was abundance of broadleaf weeds in guava plants (monocrop) of 26.11%. Broadleaf weeds of families Asteraceae and Euphorbiaceae were noticed to have elevated numbers of members.…”

Section: Composition and Distribution Of Weed Speciesmentioning

confidence: 74%

Abundance and Diversity Index of Weeds in Oil Palm and Vegetable Intercropping in Rainforest Zone of Nigeria

Oluwatobi

Olorunmaiye

2021

Caraka Tani J. Sustain. Agric.

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The problem of severe weed infestation often arises during the early phases of establishment of oil palm field due to the spacing requirement and growth habit of young oil palm plantation until later years when the canopy closes. This study was conducted at Ala, Akure-North Local Government Area, Ondo State, Nigeria, to investigate the composition of weed species and their distribution in fruit vegetable-juvenile oil palm intercrop. The fallow alleys within the immature oil palm were intercropped with 2 accessions of tomato (NGB 01665 and NG/AA/SEP/09/053) and eggplant (NGB 01737). The sampling of the weed species was carried out with a quadrat (0.25 m2). Weed species parameters and the Diversity Index (D) were quantitatively analyzed. The results revealed that members of Asteraceae and Poaceae gave the highest weed species at 3 and 6 weeks after intercropping (WAI) (17.857% and 19.04%) respectively. A total of 23 and 16 were found at 3 and 6 WAI, while the least diversity index of 0.734 was recorded in the immature oil palm/tomato (NGB 01665) plot at 6 WAI. Farmers should be persuaded to simultaneously intercrop fruit vegetables within the alley of juvenile oil palm, particularly at the earlier years prior to closure of the oil palm canopy.

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Section: Composition and Distribution Of Weed Speciesmentioning

confidence: 74%

Abundance and Diversity Index of Weeds in Oil Palm and Vegetable Intercropping in Rainforest Zone of Nigeria

Oluwatobi

Olorunmaiye

2021

Caraka Tani J. Sustain. Agric.

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Allelopathic effects of Mikania micrantha Kunth on barnyardgrass and lowland rice1

Tampubolon

Zulkifi²,

Yusuf

2022

Pesqui. Agropecu. Trop.

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Secondary metabolites from weeds have potential as a natural herbicide and are safe for the main crop. This study aimed to screening secondary metabolites in Mikania micrantha extract and their effect on the agronomic, physiological and histological characteristics of barnyardgrass and lowland rice. A non-factorial randomized block design was used, with extract concentrations of Mikania micrantha (0; 20; 40; 60; 80; 100 %) and 2,4-D dimethyl amine herbicide as comparison. The M. micrantha extract presented favonoids, tannins, alkaloids and saponins. The concentration of 20-100 % inhibited the barnyardgrass growth, but was considered safe for the lowland rice, and increased the root length and volume, while the concentration of 60 % increased the number of leaves and stomatal density in the lowland rice. The concentration of 20-100 % significantly inhibited the root volume, biomass, SPAD total chlorophyll and growth reduction of barnyardgrass, and it was classifed as an inhibitor. The barnyardgrass tocixity also increased as the concentration grew from 60 to 100 %. The M. micrantha extract reduced the barnyardgrass growth by 63.5 %, being close to the percentage presented by the 2,4-D dimethyl amine (65.6 %).

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Weed diversity as affected by tillage and ammonium glufosinate herbicide

Yusuf

Tampubolon

Mustamu

et al. 2022

Pesqui. Agropecu. Trop.

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Farmers in Indonesia generally spray herbicides to control weeds and use tillage during the early stages of crop cultivation; consequently, these activities affect the weed composition and diversity. This study aimed to evaluate the dominance and diversity index of weeds and obtain abundance correlations according to the soil chemical characteristics, as well as the effect of the ammonium glufosinate herbicide, in different tillage systems. A non-factorial randomized block design was used, consisting of no-tillage (NT), 1-time tillage (T1) and 2-times tillage (T2), with three replications. The Cyperus rotundus and Ageratum conyzoides weed species were dominant in the tillages. The diversity indices were 2.261, 2.196 and 2.234 (moderate/stable condition), respectively for the NT, T1 and T2. For T2, there were increases of 2.82-folds, 41 populations and 2.43-folds, respectively for A. conyzoides, Cynodon dactylon and Euphorbia heterophylla, when compared to NT, while a decrease was observed in grasses for T1 and T2 (50.71 and 26.05 %, respectively). Moreover, there was a positive and significant correlation for E. heterophylla according to the soil cation exchange capacity (0.727). In contrast, four new weed species (Glyceria maxima, Leersia oryzoides, Scoparia dulcis and Anthoxanthum oculatum) were found due to the ammonium glufosinate application, in the different tillage systems.

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Glyphosate Potassium Salt Dosage Efficacy to Weed Control in Guava Plants

Cited by 3 publications

References 12 publications

Abundance and Diversity Index of Weeds in Oil Palm and Vegetable Intercropping in Rainforest Zone of Nigeria

Abundance and Diversity Index of Weeds in Oil Palm and Vegetable Intercropping in Rainforest Zone of Nigeria

Allelopathic effects of Mikania micrantha Kunth on barnyardgrass and lowland rice1

Weed diversity as affected by tillage and ammonium glufosinate herbicide

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