2020
DOI: 10.1590/1983-21252020v33n213rc
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Defoliation Levels at Vegetative and Reproductive Stages of Soybean Cultivars With Different Relative Maturity Groups

Abstract: ABSTRACT Soybean tolerance to defoliation may be affected by relative maturity group (RMG) of the cultivar. For this reason, this study was carried out to evaluate the effects of artificial defoliation at vegetative and reproductive stages on the agronomic performance of soybean cultivars with different RMG. Two experiments were carried out in greenhouse conditions in Lages, Santa Catarina State, Brazil. Defoliation was carried out at V6 in the first experiment and at R3 in the second experiment. Three… Show more

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Cited by 6 publications
(10 citation statements)
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“…The leaf area between stages V6 and R2 varied from 251 to 1697 cm 2 and was not affected by water restriction or defoliation (Table 1). This result corroborates with Durli et al (2020), who also reported that the leaf area between stages V6 and R2 was not influenced by defoliation at the V6 stage, regardless of the maturation group of the cultivar.…”
Section: Resultssupporting
confidence: 92%
See 1 more Smart Citation
“…The leaf area between stages V6 and R2 varied from 251 to 1697 cm 2 and was not affected by water restriction or defoliation (Table 1). This result corroborates with Durli et al (2020), who also reported that the leaf area between stages V6 and R2 was not influenced by defoliation at the V6 stage, regardless of the maturation group of the cultivar.…”
Section: Resultssupporting
confidence: 92%
“…Several studies have attempted to elucidate the tolerance of soybeans to defoliation at different defoliation levels and crop development stages. The results have ranged from no reduction to a 68% decrease in grain yield (Bahry et al, 2013a and b;Glier et al, 2015;Zuffo et al, 2015;Monteiro et al, 2017;Durli et al, 2020), reinforcing the need for further research on this subject.…”
Section: Introductionmentioning
confidence: 99%
“…This fact were verified due, in cultivars of indeterminate habit, stop the apical meristem growth for new nodes, internodes and leaves (Zanon et al, 2018). According Durli et al (2020) similar results confirming that soybean defoliation in the vegetative phase make the plants regrowth and expanding LAI, but not significative regrowth are observed on reproductive phases.…”
Section: Resultsmentioning
confidence: 54%
“…For example, one-third leaf removal from basal portion of the canopy in cowpea increased grain yield over control and severe defoliation decreased seed yield (Hossain et al, 2006). Similarly, mild defoliations (16.6-25%) during reproductive phase do not adversely affect the seed yield in mungbean (Mondal, 2012) and in soybean (Ali et al, 2013;Durli et al, 2020). On the other hand, reverse results due to defoliation was also reported, in cowpea, in mungbean (Rao and Ghildiyal, 1985) and in soybean.…”
mentioning
confidence: 90%
“…Greater light penetration in the canopy through defoliation may reduce the abortion of flowers and immature pods (Mondal, 2012) and increase seed yield. The effect of manipulation of source (leaf) size in legumes has been studied and reported both advantageous and disadvantageous effect of defoliation in many crops (Bhatt and Rao, 2003;Durli et al, 2020). For example, one-third leaf removal from basal portion of the canopy in cowpea increased grain yield over control and severe defoliation decreased seed yield (Hossain et al, 2006).…”
mentioning
confidence: 99%