Use of Green Manure/Cover Crops and Conservation Tillage in Santa Catarina, Brazil

Wildner, Leandro do Prado; Freitas, V. H. de; McGuire, M.

doi:10.1007/1-4020-2051-1_1

Cited by 3 publications

(1 citation statement)

References 4 publications

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“…Green manure is an agricultural product created after leaving plants fresh materials either in place or brought from afar to wither on field surfaces so that they can be used as mulch and/or soil amendment later (Prado Wildner et al, 2004). The green manuring practice started in the ancient time and gained much popularity in the first decades of the 20th century (MacRae and Mehuys, 1985), but received considerable attention from the research community in recent decades (McCauley, 2011;Miller et al, 2011;Lee et al, 2010;Eilittä et al, 2004;Hartwig and Ammon, 2002).…”

Section: Introductionmentioning

confidence: 99%

Combined effects of water retaining agent and green manure on trace elements concentration in tobacco farming purple soils

Angelique¹,

Dan²,

Ye³

et al. 2022

Afr. J. Agric. Res.

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Green manure (GM) is widely adopted for agricultural productivity and sustainability. The present study supplemented the GM effect with that of water retaining agent (WRA) to enhance the sustainability of tobacco planting purple soils in Sichuan Province, China. The study employed three GM legumes varieties (Trifolium repens, Vicia villosa and Medicago sativa), while the WRA used was polyacrylamide at different application rates (0, 30, 90, 150 and 210 kg/ha). The results revealed that the average concentration of trace elements ranged from 0.86 to 1.18 mg/kg, 22.2 to 26.5 g/kg, 78 to 426 mg/kg, 16 to19 mg/kg, and 69 to 76 mg/kg for Mo, Fe, Mn, Cu, and Zn, respectively. Compared to actual soil concentration, Mn was increased by adding 150 or 210 kg/ha to M. sativa fertilized soil. Zn was increased by combining any WRA rate with V. villosa or 150 kg/ha WRA with T. repens. The combination of 90 kg/ha WRA with M. sativa, and 30 kg/ha WRA with either T. repens or V. villosa decreased Fe. Then, all the treatments reduced soil Mo and Cu. Therefore, these GM and WRA affected the soil environmental conditions associated with different responses of individual soil trace elements.

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Section: Introductionmentioning

confidence: 99%

Combined effects of water retaining agent and green manure on trace elements concentration in tobacco farming purple soils

Angelique¹,

Dan²,

Ye³

et al. 2022

Afr. J. Agric. Res.

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Cover Crops for Sustainable Agrosystems in the Americas

Scholberg

Dogliotti

Leoni

et al. 2010

Sustainable Agriculture Reviews

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Summer Cover Crops and Soil Amendments to Improve Growth and Nutrient Uptake of Okra

Wang¹,

Li²,

Klassen³

2006

horttech

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A pot experiment with summer cover crops and soil amendments was conducted in two consecutive years to elucidate the effects of these cover crops and soil amendments on `Clemson Spineless 80' okra (Abelmoschus esculentus) yields and biomass production, and the uptake and distribution of soil nutrients and trace elements. The cover crops were sunn hemp (Crotalaria juncea), cowpea (Vigna unguiculata), velvetbean (Mucuna deeringiana), and sorghum sudangrass (Sorghum bicolor × S. bicolor var. sudanense) with fallow as the control. The organic soil amendments were biosolids (sediment from wastewater plants), N-Viro Soil (a mixture of biosolids and coal ash, coal ash (a combustion by-product from power plants), co-compost (a mixture of 3 biosolids: 7 yard waste), and yard waste compost (mainly from leaves and branches of trees and shrubs, and grass clippings) with a soil-incorporated cover crop as the control. As a subsequent vegetable crop, okra was grown after the cover crops, alone or together with the organic soil amendments, had been incorporated. All of the cover crops, except sorghum sudangrass in 2002-03, significantly improved okra fruit yields and the total biomass production (i.e., fruit yields were enhanced by 53% to 62% in 2002-03 and by 28% to 70% in 2003-04). Soil amendments enhanced okra fruit yields from 38.3 to 81.0 g/pot vs. 27.4 g/pot in the control in 2002-03, and from 59.9 to 124.3 g/pot vs. 52.3 g/pot in the control in 2003-04. Both cover crops and soil amendments can substantially improve nutrient uptake and distribution. Among cover crop treatments, sunn hemp showed promising improvement in concentrations of calcium (Ca), zinc (Zn), copper (Cu), iron (Fe), boron (B), and molybdenum (Mo) in fruit; magnesium (Mg), Zn, Cu, and Mo in shoots; and Mo in roots of okra. Among soil amendments, biosolids had a significant influence on most nutrients by increasing the concentrations of Zn, Cu, Fe, and Mo in the fruit; Mg, Zn, Cu, and Mo in the shoot; and Mg, Zn, and Mo in the root. Concentrations of the trace metal cadmium (Cd) were not increased significantly in either okra fruit, shoot, or root by application of these cover crops or soil amendments, but the lead (Pb) concentration was increased in the fruit by application of a high rate (205 g/pot) of biosolids. These results suggest that cover crops and appropriate amounts of soil amendments can be used to improve soil fertility and okra yield without adverse environmental effects or risk of contamination of the fruit. Further field studies will be required to confirm these findings.

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Use of Green Manure/Cover Crops and Conservation Tillage in Santa Catarina, Brazil

Cited by 3 publications

References 4 publications

Combined effects of water retaining agent and green manure on trace elements concentration in tobacco farming purple soils

Combined effects of water retaining agent and green manure on trace elements concentration in tobacco farming purple soils

Cover Crops for Sustainable Agrosystems in the Americas

Summer Cover Crops and Soil Amendments to Improve Growth and Nutrient Uptake of Okra

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