Selectivity of Herbicide and Rhizospheric Microbial Activity on<i>Hymenaea corbaril</i>L. Seedlings

Gandini, Elizzandra Marta Martins; Santos, J.B.; Gandini, Andrezza Mara Martins; Santanna, Reynaldo Campos; Silva, Daniel Valadão da

doi:10.1080/00103624.2014.931415

Cited by 3 publications

(4 citation statements)

References 39 publications

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“…Similar immediately ICH reduced caused by glyphosate in other tree species were reported also (Costa et al, 2009). However, for jatobá seedlings glyphosate doses of up to 0.70 L ha -1 provide no damage to growth (Gandini et al, 2014).…”

Section: Discussionsupporting

confidence: 79%

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Physiological and Morphological Responses of Jatobá Submitted to Weed Competition and Glyphosate Doses

Oliveira¹,

Santana²,

Santos³

et al. 2019

JAS

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The jatobá (Hymenaea courbaril L.) occurring throughout Central America and tropical countries in South America. This specie has great potential timber, in addition to fruits, leaves and bark with medicinal properties. This study was conducted to evaluate the effect of weed competition and intoxication by glyphosate in jatobá plants. The experiment was carried out with jatobá plants in field. Eleven months after planting it was held a floristic inventory in the area. One month after thisfloristic inventory, it was installed an experimental design with six randomized blocks and six treatments: manual weeding of weeds; no manual weeding or herbicide; and four glyphosate doses, 1.25, 2.5, 3.75 and 5.00 L ha-1. At 15, 30, 45, 60 and 90 days after tratment it was carried out a photochemical efficiency analysis of photosystem II, chlorophyll indices, number of leaflets, height and stem diameter of the plants. Based on physiological variables (F0, Fm, Fv/Fm and ETR), the jatobá plants recovered 60 days after treatments. Although the jatobá plants are tolerant to glyphosate and weed competition, jatobá plants under 1.25 and 2.50 L ha-1 of glyphosate reduces the increase in height around 50%, plants under 3.75 and 5.00 L ha-1 reduces around 90% and plants under weed competition around 70%.

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Section: Discussionsupporting

confidence: 79%

“…In greenhouse conditions, low sensitivity of jatobá plants to glyphosate rates of up to 0.70 L ha -1 were observed (Gandini, Santos, Gandini, Santanna, & Silva, 2014). These authors concluded that the damage caused by glyphosate may not be visible or difficult to identify.…”

Section: Introductionmentioning

confidence: 99%

Physiological and Morphological Responses of Jatobá Submitted to Weed Competition and Glyphosate Doses

Oliveira¹,

Santana²,

Santos³

et al. 2019

JAS

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“…Therefore, it is possible to infer that all preemergent herbicides applied did not affect the viability of H. stigonocarpa seeds due to these characteristics of impermeable tegument and strong resistance, which conferred normal emergence for the species. When evaluating the selectivity of glyphosate and sulfentrazone in H. courbaril seedlings, Gandini et al (2014) confirmed that these herbicides have high potential to be used to control weeds in planting areas of this species at an early stage of development. The doses applied by the authors did not significantly affect the variables height, diameter, and root and shoot dry weight, showing no difference with the control.…”

Section: Resultsmentioning

confidence: 76%

Effect of pre-emergent graminicide herbicides on germination and early development of native species

Marques¹,

Pinheiro²,

Marques³

et al. 2019

Científica

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The occurrence of weeds has been the main obstacle to vegetation recovery in Cerrado areas unduly occupied by agricultural and livestock activities. This study evaluates the effect of different pre-emergent herbicides on the emergence, survival, and early development of seedlings of the native species jatobá (Hymenaea stigonocarpa), urucum (Bixa orellana), dry flour (Albizia hasslerii), and white jurema (Mimosa interrupta). The experiment was carried out under greenhouse conditions in a completely randomized experimental design with five replicates, where the treatments were constituted by herbicides: isoxaflutole, applied at the doses of 100, 200, and 300 g ai ha-1 ; pendimethalin, at 500, 1000, and 4000 g ai ha-1 ; and trifluralin, at 600, 1200, and 2400 g ai ha-1 ; in addition to a control treatment, without the application of herbicides. Herbicide phytotoxicity was evaluated at 35 days after emergence for the number of emerged seedlings, number of leaves per seedling, seedling height and diameter, and root and shoot dry weight. With the results obtained, it is possible to affirm that under the conditions of the experiment, all the herbicides and doses used did not affect the emergence and early development of seedlings of species H. stigonocarpa and B. orellana. For species A. hasslerii, the dose of 300 g ai ha-1 of herbicide isoxaflutole was not selective. All doses of the herbicide trifluralin showed selectivity for species M. interrupta.

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“…These anatomical structures are involved in decreasing the effective amount of herbicide absorbed by plants. Glyphosate has little a nity for lipids, therefore epicuticular waxes with large amounts of non-polar compounds constitute a barrier to the penetration of this herbicide [22,23,24].…”

Section: Introductionmentioning

confidence: 99%

Tolerance of Hymenaea stigonocarpa Mart. ex Hayne. to glyphosate

Faria

Carlos

Jakelaitis

et al. 2022

Preprint

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The objective of this work was to evaluate the glyphosate herbicide effect on Hymenaea stigonocarpa Mart. ex Hayne seedlings. A randomized block design with 5 replicates was used with an experimental unit composed of one H. stigonocarpa plant in 5L pots. The treatments were: 0 (control); 9.6; 240; 480; 960 g a. ha− 1 of glyphosate. Evaluations were performed 24 hours and 60 days after application. Gas exchange, respiration, photosynthesis, visual, anatomical and histochemical evaluations were carried out with leaves from the middle third being collected, and the growth in relation to the two dates was measured and recorded. The growth analysis showed that the seedlings showed an increase in stem diameter, a decrease in leaf number and an increase in height. There were increases in photosynthetic, electron transport and transpiratory rates, and in the effective yield of photosystem II one day after the glyphosate application. The plants then showed a reduction in transpiratory rate and a reduction in Fv/Fm at 60 days after application. With these studies we can conclude that the Hymenaea stigonocarpa species is able to survive after contact with the glyphosate herbicide, with no visual and/or anatomical damage, along with positive increases in growth and physiological characteristics.

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Selectivity of Herbicide and Rhizospheric Microbial Activity onHymenaea corbarilL. Seedlings

Cited by 3 publications

References 39 publications

Physiological and Morphological Responses of Jatobá Submitted to Weed Competition and Glyphosate Doses

Physiological and Morphological Responses of Jatobá Submitted to Weed Competition and Glyphosate Doses

Effect of pre-emergent graminicide herbicides on germination and early development of native species

Tolerance of Hymenaea stigonocarpa Mart. ex Hayne. to glyphosate

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