Direct seeding reduces the costs of tree planting for forest and savanna restoration

Raupp, Paola Pisetta; Ferreira, Maxmiller Cardoso; Alves, Monique; Campos-Filho, Eduardo Malta; Sartorelli, Paolo Alessandro Rodrigues; Consolaro, Hélder; Vieira, Daniel Luís Mascia

doi:10.1016/j.ecoleng.2020.105788

Cited by 49 publications

(49 citation statements)

References 29 publications

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“…In recent years, direct seeding has gained prominence in the ecological restoration of degraded areas (Grossnickle and Ivetić 2017) due to its low cost, ease of use and promotion of great diversity of species and functional groups (Cole et al 2011;Palma and Laurance 2015;Grossnickle and Ivetić 2017;Raupp et al 2020). The direct seeding is more feasible to manage herbaceous-shrub species than seedling planting techniques.…”

Section: ₄₄₅ I��mentioning

confidence: 99%

La cobertura de semillas y los períodos de sequía en la temporada de lluvias interfieren con el éxito de la siembra directa en la restauración de áreas mineras en las sabanas tropicales

et al. 2021

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A��. Among the limitations for the use of direct seeding in the ecological restoration of severely degraded areas in tropical grasslands, the association between dry periods and an inhospitable substrate stands out. This work evaluated whether covering seed with a soil layer and the addition of a thin topsoil layer to the degraded substrate interferes with native plant establishment in degraded areas. The effect of rainfall variations on direct seeding results was also measured. The establishment of seven native species was evaluated under four different conditions: 1) seeding on degraded substrate, 2) seeding covered by 1 cm degraded substrate layer, 3) seeding on 1cm topsoil layer, and 4) seeding covered by 1 cm topsoil layer. In general, species with smaller seeds showed higher establishment percentages in treatments in which seeds were deposited on the substrate. Legume species, which have larger seeds, achieved be�er establishment percentage when seeds were covered by the substrate. The addition of topsoil was beneficial for Bulbostylis fimbriata (Cyperaceae), while for the other species, the effect was null or harmful. Data also showed that rainfall amount and distribution affected the establishment rate. Direct seeding is an advantageous alternative for the ecological restoration of tropical grassland degraded by mining. Be�er knowledge on sowing management and behavior of native species can contribute to improving the efficiency of this technique.

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Section: ₄₄₅ I��mentioning

confidence: 99%

La cobertura de semillas y los períodos de sequía en la temporada de lluvias interfieren con el éxito de la siembra directa en la restauración de áreas mineras en las sabanas tropicales

et al. 2021

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“…2017; Grossnickle & Ivetić 2017; Raupp et al . 2020), particularly in large‐scale restoration projects (Pérez et al . 2019).…”

Section: Introductionmentioning

confidence: 99%

Post‐sowing weed control technique can affect woody seedling numbers, with early hand‐weeding potentially more beneficial than early spraying

Ede¹,

Greet²

2021

Eco Management Restoration

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Summary Direct seeding is increasingly being used as a cost‐effective revegetation technique. Successful outcomes from direct seeding rely on effective weed control, particularly during the vulnerable seedling establishment phase. Post‐sowing weed control options are constrained by the need to protect seedlings from damage and few studies have compared the effectiveness of different weed control techniques. We evaluated the effect of preliminary hand weeding (with subsequent spraying), spraying monthly or spraying quarterly with glyphosate, on woody seedling emergence, survival and growth in trials sown either in spring or autumn at a riparian site in Victoria, southeastern Australia. Seedling numbers were recorded monthly for 6 months and at 12 months after sowing, with seedling survival and heights assessed at 12 months. Total seedling numbers were higher in subplots initially hand weeded than in subplots sprayed on either a monthly or quarterly basis, regardless of when direct seeding occurred, but weed control treatment had no effect on seedling survival. These results indicate that post‐sowing spraying limited rates of seedling emergence, either directly or indirectly. For direct seeding, hand weeding in the first few months after sowing may maximise rates of woody seedling emergence, while spraying with glyphosate may inhibit seedling emergence.

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“…Direct seeding has been proposed to reduce restoration costs in tropical ecosystems (Souza & Engel 2018; Raupp et al 2020). However, in many tropical degraded areas, several studies showed very low seedling emergence and establishment of sown species, which may reduce or even prevent the applicability of this technique for forest restoration on a larger scale (Pereira et al 2013; Ceccon et al 2016; Meli et al 2018).…”

Section: Introductionmentioning

confidence: 99%

Direct seeding to restore tropical seasonal forests: effects of green manure and hydrogel amendment on tree species performances and weed infestation

Souza

Engel

Mattos

2020

Restoration Ecology

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Although direct tree seeding may be a potentially useful restoration practice, many biotic and abiotic barriers prevent seedling emergence and early development, reducing its success and applicability. To overcome these barriers, we undertook a field experiment to test the effects of using green manure and hydrogel alone, or in combination, on seedling performances of 14 native tree species that were planted by direct seeding in a deforested tropical seasonal forest area in southern Brazil and to examine how green manure affected the initial weed coverage in the study plots. We evaluated competing vegetation coverage and tree seedling emergence and early development for 2 years after sowing. Weed infestation was significantly higher in the experimental plots with no green manure; however, neither green manure nor hydrogel improved tree seedling emergence and early development at any time of measurement. Our results suggest that the use of green manure and hydrogel alone, or in combination, were not effective in guaranteeing direct seeding success; however, green manure can be an effective method to reduce weed infestation. Direct seeding techniques for tree species still need to be improved in order to restore tropical seasonal forests on a larger scale.

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Direct seeding reduces the costs of tree planting for forest and savanna restoration

Cited by 49 publications

References 29 publications

La cobertura de semillas y los períodos de sequía en la temporada de lluvias interfieren con el éxito de la siembra directa en la restauración de áreas mineras en las sabanas tropicales

La cobertura de semillas y los períodos de sequía en la temporada de lluvias interfieren con el éxito de la siembra directa en la restauración de áreas mineras en las sabanas tropicales

Post‐sowing weed control technique can affect woody seedling numbers, with early hand‐weeding potentially more beneficial than early spraying

Direct seeding to restore tropical seasonal forests: effects of green manure and hydrogel amendment on tree species performances and weed infestation

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