Biochar and mucuna increase papaya plant growth and nutrition, as well as soil fertility

Silva, Renato Veloso da; Rodrigues, Luciana Aparecida; Silva, Maurício Gonçalves da; Silva, Bruna Gandini da; Martins, Marco Antonio

doi:10.1590/1983-40632019v4955210

Cited by 7 publications

(3 citation statements)

References 13 publications

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“…Table 1 shows the growth indices of T. occidentalis grown on the gas-flared soil and non-gas-flared soil for 8 weeks. Plant height is an important physiological property useful for assessing the growth and cell differentiation in plants (Silva et al 2019). It is also an expression of how well a plant is able to optimally utilize soil available nutrients.…”

Section: Resultsmentioning

confidence: 99%

Biochar for Climate Change Adaptation: Effect on Heavy Metal Composition of Telfairia occidentalis Leaves

Akachukwu

Gbadegesin

Ojimelukwe

et al. 2021

African Handbook of Climate Change Adaptation

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Gas flaring is a key contributor of greenhouse gases that causes global warming and climate change. Adaptation measures for tackling impacts of climate change have gained much research interest. This chapter assessed vegetable farmers’ perception of gas flaring and the effect of biochar remediation on the heavy metal composition of cultivated Telfairia occidentalis. A gas-flared area, Ohaji/Egbema L.G.A of Imo State, and a non-gas-flared area, Umudike, Ikwuano L.G.A, were selected for this research. Structured questionnaire was used to elicit information from 120 respondents. Soils were collected from the study sites and transported to the greenhouse. Five different rates, 0 t ha−1, 7.1 t ha−1, 13.9 t ha−1, 20.9 t ha−1, and 28.0 t ha−1, of palm bunch biochar were applied to the soils in plastic buckets. After 2 weeks of mineralization, two viable seeds of Telfairia occidentalis were planted in each bucket and watered every other day for 8 weeks. The result revealed that 63% of vegetable farmers where female, while 37% were male in the gas-flared area. A total of 97% of the farmers had knowledge of gas flaring. A total decrease of 55% percent income, 90% yield, and 67% market quality of vegetable farmers was attributed to gas-flared activities. The plant height of cultivated vegetables increased every 2 weeks with greater increase in the test plant. Heavy metal concentration (Pb, and Cr) decreased with increasing biochar rate and was significantly lower for 28.0 t ha−1. Biochar can enhance soil fertility and help immobilize heavy metals. The effect of biochar application on the heavy metal composition is dependent on the rate of application. Biochar use could be a cheap adaptation measure in the face of a changing climate.

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Section: Resultsmentioning

confidence: 99%

Biochar for Climate Change Adaptation: Effect on Heavy Metal Composition of Telfairia occidentalis Leaves

Akachukwu

Gbadegesin

Ojimelukwe

et al. 2021

African Handbook of Climate Change Adaptation

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“…Greater plant P uptake from amended soil was particularly evident in the Andisol, a soil inherently deficient in P (Uehara and Ikawa 2000). As wood-derived biochars (such as the one in this study) have shown little effect on P availability in soils (Glaser and Lehr 2019), it is likely that the compost has supplied the majority of the available P. The addition of both mineral and organic P forms in the compost may have allowed microbial mineralisation of organic P over time to supply plant needs, especially for the papaya plant (da Silva et al 2019).…”

Section: Impact Of Biochar and Compost On Soil And Plantsmentioning

confidence: 90%

Surface-applied or incorporated biochar and compost combination improves soil fertility, Chinese cabbage and papaya biomass

Cox

Hue

Ahmad

et al. 2021

Biochar

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Many Hawaiian agricultural soils are acidic with low-nutrient retention; therefore, organic soil amendments are often used to improve soil properties and increase yields. Amendments can be incorporated for annual crops, but perennial orchards need surface application to avoid damaging surface roots. Pot trials compared responses to incorporated (IBC) or surface-applied (SBC) combination of hardwood biochar and chicken manure compost (4% v/v of each amendment) added to an Andisol and Oxisol. Soil pH was increased by 0.4–1.1 units in IBC and by 0.2–0.5 for SBC in the 0–10 cm soil layer. Both SBC and IBC increased soil total N, extractable P, Ca and Mg in the 0–10 cm soil layer. Soil pH, total C and extractable Ca were also higher in the 10–20 cm soil layer for IBC soil, indicating movement and/or leaching of amendments. Chinese cabbage biomass was 18–70% higher in the IBC and 14–47% higher in the SBC than that in the unamended soil, while papaya biomass was 23% and 19% higher in SBC and IBC, respectively. There was a greater response in the more acidic Andisol soil, with larger improvements in soil pH, plant nutrient uptake and root biomass than the Oxisol. Surface application was as effective in increasing plant growth as the incorporated amendment, providing evidence for farm scale assessment. Biochar and compost are recommended for use in tropical soils, and surface application may be beneficial to annual and perennial crops.

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“…The characteristic of the substrate influences highly the seedlings development, because provides beyond of physical support, nutritional supply until the transplant of them to the definitive production local [6]. Good quality seedlings will develop better and will provide a radicular system with better adaptation capability for the new local after transplant, affecting significatively the production [8].…”

Section: Introductionmentioning

confidence: 99%

Melon Seedlings Phytomass under Poultry Litter Biochar Doses

Laurentino¹,

Chaves²,

Cavalcante³

et al. 2021

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The use of organic waste for the preparation of seedling substrates is an important environmental and economic option. In this perspective, substrates using biochar emerges as an alternative for seedling production due to their favorable physical and chemical characteristics. The present study aimed to evaluate the efficiency of doses of poultry litter biochar as a substrate constituent for the production and quality of the seedlings. The work was conducted in a semi protected environment, belonging to the Federal University of Campina Grande-UFCG. The statistical design used was completely randomized in a 6 × 2 factorial scheme, consisting of 6 doses of biochar (0, 4, 8, 12, 16 and 20 t•ha −1) and two varieties of melon (Yellow and Hales Best Jumbo) with 4 repetitions totaling 48 experimental units. The fresh and dry plant phytomass mass (aerial, roots and total), root length and the quality of seedlings were evaluated. It was concluded that the addition of poultry litter biochar to the substrate was beneficial, promoting an increase in the analyzed seedling variables, being the ideal dose for good development of melon seedlings 12 t•ha −1. The Yellow variety presented a better response than the Hales Best Jumbo to the charcoal application. Considering the advantages of the use of poultry litter biochar on the substrate composition, found in the present study, its utilization constitutes a viable alternative for the development of melon seedlings and for the environmental disposal of the poultry litter.

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Biochar and mucuna increase papaya plant growth and nutrition, as well as soil fertility

Cited by 7 publications

References 13 publications

Biochar for Climate Change Adaptation: Effect on Heavy Metal Composition of Telfairia occidentalis Leaves

Biochar for Climate Change Adaptation: Effect on Heavy Metal Composition of Telfairia occidentalis Leaves

Surface-applied or incorporated biochar and compost combination improves soil fertility, Chinese cabbage and papaya biomass

Melon Seedlings Phytomass under Poultry Litter Biochar Doses

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