Cultivares, espaçamento entrelinhas e programas de aplicação de fungicidas no controle de Phakopsora pachyrhizi Sidow em soja

Madalosso, Marcelo Gripa; Domingues, Lucas da Silva; Debortoli, M. P.; Lenz, Giuvan; Balardin, Ricardo Silveiro

doi:10.1590/s0103-84782010001100002

Cited by 22 publications

(12 citation statements)

References 8 publications

(3 reference statements)

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“…As a result, this influence on the microclimate (humidity and temperature), which represents a preponderant fact for the development of a pest population (RODRIGUES, 2011). In this sense, reducing spacing between rows could concern not merely pests' occurrence but also interfere in traits related to application technology (MADALOSSO et al, 2010). Application technology is related to the efficiency in which the application syrup is deposited on the biological target at the time of spraying (BAESSO et al, 2014).…”

Section: Introductionmentioning

confidence: 99%

Phytosanitary risks and agronomic performance of soybeans associated with spatial arrangements of plants

Carmo¹,

Silva²,

Braz³

et al. 2019

Biosci. J.

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Soybeans sowing in different plants' spatial distribution can influence the phytosanitary management of this crop and, consequently, impact on grains yield. This study was carried out to evaluate the effect of plants arrangements on infestation and control of caterpillars, the deposition of spray syrup as well as assess the agronomic performance of soybean cultivated in the Brazilian Cerrado. The assay was performed during two consecutive seasons in a randomized complete block design with four replications. Soybean cultivation was implemented in 0.50 m spacing between rows, crossed (0.50 m x 0.50 m), twin rows (0.25 m / 0.75 m), and narrow (0.25 m). In the reproductive stage of plants, both crossed and narrow arrangements showed higher caterpillars' incidence. There was a more evident risk of caterpillar incidence in arrangements that promoted better equidistance among plants. This risk was mitigated when taking into account both control and overlap of syrup, which could be incremented into inferior canopy with the enhancement of application rate. The increase in application rate from 75 to 150 L ha-1 promoted superior spray deposition volumes. Increases in grain yield was noted in the narrow arrangement.

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Section: Introductionmentioning

confidence: 99%

Phytosanitary risks and agronomic performance of soybeans associated with spatial arrangements of plants

Carmo¹,

Silva²,

Braz³

et al. 2019

Biosci. J.

View full text Add to dashboard Cite

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“…The low efficiency of product applications used for plant protection may be detrimental to producers and the environment, even in genetically modified crops (Kleter and Kuiper, 2005), since an increased number of applications is required (Kleter et al, 2007;Madalosso et al, 2010) and could result in productivity losses (Aktar et al, 2009). The low efficiency of product applications used for plant protection may be detrimental to producers and the environment, even in genetically modified crops (Kleter and Kuiper, 2005), since an increased number of applications is required (Kleter et al, 2007;Madalosso et al, 2010) and could result in productivity losses (Aktar et al, 2009).…”

mentioning

confidence: 99%

“…For example, the use of adequate sowing space (Madalosso et al, 2010;Roese et al, 2012) where the row spacing of 60 cm provided lower values of accumulated disease and greater productivity than 40 and 50 cm (Madalosso et al, 2010). For example, the use of adequate sowing space (Madalosso et al, 2010;Roese et al, 2012) where the row spacing of 60 cm provided lower values of accumulated disease and greater productivity than 40 and 50 cm (Madalosso et al, 2010).…”

mentioning

confidence: 99%

“…. The low efficiency of product applications used for plant protection may be detrimental to producers and the environment, even in genetically modified crops (Kleter and Kuiper, 2005), since an increased number of applications is required (Kleter et al, 2007;Madalosso et al, 2010) and could result in productivity losses (Aktar et al, 2009).…”

mentioning

confidence: 99%

“…Various management and breeding approaches have been applied to increase the efficiency of spray droplet penetration into the inner canopy. For example, the use of adequate sowing space (Madalosso et al, 2010;Roese et al, 2012) where the row spacing of 60 cm provided lower values of accumulated disease and greater productivity than 40 and 50 cm (Madalosso et al, 2010). Furthermore, for different plant architectures, there were differences in droplet density of ?38 (217-134 droplets cm −2 ), 30 (53-37 droplets cm −2 ), and 67% (36-12 droplets cm −2 ) among cultivars for the upper, middle, and lower layers, respectively (Debortoli et al, 2012).…”

mentioning

confidence: 99%

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Architectural Characteristics and Heliotropism May Improve Spray Droplet Deposition in the Middle and Low Canopy Layers in Soybean

et al. 2018

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Leaf angle and plant architecture may determine the penetration of phytosanitary products in the low layer of soybean [Glycine max (L.) Merr.] plants, make the diseases control difficult, and promote losses in crop productivity. Strategies should be studied to increase the efficiency of deposition of phytosanitary products inside the canopy. The hypothesis of this work was that reversible leaf movements and plant architecture may change the penetration of spray droplets into the low layer of soybean plants. We evaluated whether plant architectural characteristics affect spray droplet deposition and monitored if heliotropic movements can increase the efficiency of applications of plant protection products. Four soybean cultivars were investigated. Plant architectural characteristics were evaluated in the V6, V9, R2, and R4 phenological stages, interception of photosynthetically active radiation was evaluated in the V9, R2, and R4 stages, and heliotropic movements were evaluated in the V6 and R4 stages. Sprayings were performed at 0800, 1100, 1400, and 1700 h in the R4 stage. Occurrence of diaheliotropic movements was greater in the V6 than in the R4 stage. The number of branches per plant in the R4 stage was 8, 14, 6, and 14, the branch size was 10.6, 25.8, 12.5, and 21.4 cm, and the leaf area index was 4.2, 4.7, 3.7, and 4.7 for cultivars ‘BMX Ativa RR’, ‘NA 5909 RG’, ‘95R51’, and ‘BMX Potência RR’, respectively. Those architectural characteristics played the most important role in droplet penetration into the low canopy layer. Droplet deposition in the low canopy layer was greater at daylight hours close to noon, showing that the paraheliotropism occurring in those daily hours is more helpful to droplet penetration deeper into the canopy than in other hours.

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Impact of fungicide application volume on ASIAN rust control and soybean crop yield

et al. 2022

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Cultivares, espaçamento entrelinhas e programas de aplicação de fungicidas no controle de Phakopsora pachyrhizi Sidow em soja

Cited by 22 publications

References 8 publications

Phytosanitary risks and agronomic performance of soybeans associated with spatial arrangements of plants

Phytosanitary risks and agronomic performance of soybeans associated with spatial arrangements of plants

Architectural Characteristics and Heliotropism May Improve Spray Droplet Deposition in the Middle and Low Canopy Layers in Soybean

Impact of fungicide application volume on ASIAN rust control and soybean crop yield

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