Rice Seed Treatment and Recoating With Polymers: Physiological Quality and Retention of Chemical Products

Fagundes, Lovane Klein; Nunes, Ubirajara Russi; Prestes, Osmar D.; Fernandes, Tiéle Stuker; Ludwig, Eduardo José; Saibt, Nathália

doi:10.1590/1983-21252017v30n412rc

Cited by 7 publications

(9 citation statements)

References 22 publications

(25 reference statements)

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“…The present results show that the use of polymers in both seed and layer treatment mixes was efficient in reducing the loss of the active ingredient Thiamethoxam by leaching in the simulated rainfall test. This result corroborates studies on corn by Avelar et al (2012) and rice by Fagundes et al (2017), who achieved reduced losses by leaching from the sand column and reported that the application of polymer promoted more adherence of chemicals on the seeds. This result indicates that the tested product is compatible and reflected on higher adhesion of the chemical on the seeds.…”

Section: Resultssupporting

confidence: 91%

“…The extraction equipment used for measuring the leaching of chemicals from treated seeds was made of PVC pipes (15cm height and diameter of 4.6 cm) placed side by side on a wooden support (Figure 1). A paper filter tied to the tubes was employed for covering the inferior part, as described by Fagundes et al (2017). Furthermore, the equipment was filled with 7cm of washed, sieved and sterilized sand.…”

Section: Methodsmentioning

confidence: 99%

“…Ioannou et al (2020) argue that polymers have been used as seed coatings, allowing the encapsulation and controlled release of pesticides used against pathogens, pests and insects that may interfere with seed germination. Using polymers for seed coating was found to benefit corn (Avelar et al, 2012) and rice (Fagundes et al, 2017).…”

Section: Introductionmentioning

confidence: 99%

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Polymer coating in soybean seed treatment and their relation to leaching of chemicals

et al. 2020

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This study evaluated the physiological quality and quantified the efficiency of polymer in reducing the loss of phytosanitary products by leaching from soybean seeds of different diameters and in different treatments. Two lots of seed and two types of treatments were tested: polymers associated with seed treatment, and polymer application in layers after the seed treatment. For that, the following treatments were analyzed: Control= no seed treatment; Treat+pol= seed treatment + polymers in the mix; Treat/pol= seed treatment + polymers applied in layers; Treat= seed treatment. To evaluate seed treatment retention by the polymers, extraction equipment was employed and leaching of the active ingredient thiamethoxam was quantified. Evaluation of physical quality was conducted with tests of germination rate, first count, emergence rate, accelerated aging, seedling length, seedling dry mass and moisture content. Polymer application associated with seed treatment was efficient in reducing losses by leaching, reducing product loss by 20%. No significant differences in retention and physiological quality were found when different methods for polymer application were compared. Bigger seeds presented greater vigor, but the germination rate was unaffected.

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Section: Resultssupporting

confidence: 91%

Section: Methodsmentioning

confidence: 99%

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Polymer coating in soybean seed treatment and their relation to leaching of chemicals

et al. 2020

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“…Similarly, neither peat-based inoculant nor liquid inoculant containing polymeric additives had an effect on the germination of soybean seeds (Tittabutr et al, 2007). It was previously showed that polymers can interfere with insecticide phytotoxicity, but did not affect the physiological quality of soybean seeds (Kumar et al, 2007;Pereira et al, 2010c;Camargo et al, 2017;Fagundes et al, 2017). The absence of a negative effect on the seed germination demonstrates that preinoculation can be performed on soybean seeds.…”

Section: Physiological Quality Of Soybean Seedmentioning

confidence: 95%

Pre-inoculation of soybean seeds: Effects on survival of Bradyrhizobium elkanii, nodulation and crop yield

Sandini¹,

Belani²,

Falbo³

et al. 2018

Afr. J. Agric. Res.

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Pre-inoculation of soybean seeds with Bradyrhizobium spp. associated with polymers could be an alternative to the conventional inoculation performed at the day of sowing. The objectives of this study were i) to determine whether the HiCoat ® technology (peat inoculant + liquid inoculant + polymer) allows the survival of B. elkanii after storage of the inoculated seeds, and ii) to evaluate whether the pre-inoculation and seed treatment reduces the physiological quality of seed and soybean yield. Soybean seeds were treated with different fungicides and insecticides associated with pre-inoculation using HiCoat ® and the seeds were stored at room temperature. The survival of B. elkanii was reduced over time with standard inoculation, however there was above 2 x 10 6 colony-forming units of B. elkanii per seed at 60 days after inoculation with HiCoat ®. Seed germination, number of nodules per plant, mass of nodules, yield, number of grains per plant and number of pods per plants were not significantly affected by the pre-inoculation and seed treatments. Our findings indicated that the fungicide and insecticide associated with HiCoat ® can be used to treat and to pre-inoculate seeds that can be stored for up to 71 days without compromising the nodulation of plants and soybean yield.

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“…Of the studied microorganisms, algae are gaining increasing attention, due to the fact that algae (Dubin et al, 1978), particularly marine algae, are a rich source in the oceanic environment, relatively cheap to process and able to accumulate high metal content (Wilde & Benemann, 1993), owing to low cost and ease of availability (Clemens, 2006). Various species of marine alga were used as biosorbent for removal of metals from environmental samples (Yu, 1997;El-Sikaily et al, 2007;Fagundes et al, 2017;Nessim, 2011).…”

Section: Introductionmentioning

confidence: 99%

Biosorption Capacity for Uranium and Thorium by Some Microalgae Species

Gad

Samaan

Hashem

2021

Egypt. J. Microbiol.

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T HE BIOSORPTION is an effective technique for the removal of uranium and thorium from some types of phosphate rocks of red sea area. In this study Cystoseira osmundacea, Palmaria elegans and Chondrus crispus, were used for the biosorption of uranium (U), and thorium (Th), from phosphates rocks in Egypt in Qusser and Safaga areas west red sea which characterized of shallow-water marine origin and mainly associated with sequences of white hard limestone, white chalk, yellow marls and hard cherts rocks. The obtained results showed that Cystoseira osmundacea, Palmaria elegans and Chondrus crispus have biosorption capacities of (81%, 89% and 90%), for U and (77%, 88% and 91%) for Th, respectively from phosphate of Safaga .and biosorption capacities of (81%, 84% and 89% ), for U and (79%, 81% and 88% ) for Th, respectively from phosphate of Qusser area. it is preferable to use Chondrus crispus on biosorption due to its high sorption capacity than the other two algae.

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Rice Seed Treatment and Recoating With Polymers: Physiological Quality and Retention of Chemical Products

Cited by 7 publications

References 22 publications

Polymer coating in soybean seed treatment and their relation to leaching of chemicals

Polymer coating in soybean seed treatment and their relation to leaching of chemicals

Pre-inoculation of soybean seeds: Effects on survival of Bradyrhizobium elkanii, nodulation and crop yield

Biosorption Capacity for Uranium and Thorium by Some Microalgae Species

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