Effects of Acacia seyal and biochar on soil properties and sorghum yield in agroforestry systems in South Sudan

Deng, Biar; Tammeorg, Priit; Luukkanen, Olavi; Helenius, Juha; Starr, Michael

doi:10.1007/s10457-016-9914-2

Cited by 32 publications

(28 citation statements)

References 51 publications

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“…Which is comparable with Prosophis biochar with crop residue mulch at 5t/ha (B5) at 90 and 105 DAS for RLWC and CSI. This was due to the addition of biochar in soil, which have the porous nature to hold the soil water content and increased the field capacity (Adrian et al, 2016 andDeng et al, 2016) with that addition of mulch can improvise the soil moisture by arresting evaporation with modified microclimate levels may reduce the leaf and soil temperature (Bhatt and Khera, 2006;Zhang et al, 2009). In addition to this PPFM spray with that treatment release the osmoprotectants (sugars and alcohols) on the surface of the plants.…”

Section: Effect Of Different Moisture Regimes and Moisture Conservatimentioning

confidence: 99%

Effect of Biochar, Mulch and Ppfm Spray on Leaf Relative Water Content, Leaf Proline, Chlorophyll Stability Index and Yield of Cotton under Moisture Stress Condition

Kannan¹,

Srinivasan²,

Babu³

et al. 2017

Int.J.Curr.Microbiol.App.Sci

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Section: Effect Of Different Moisture Regimes and Moisture Conservatimentioning

confidence: 99%

Effect of Biochar, Mulch and Ppfm Spray on Leaf Relative Water Content, Leaf Proline, Chlorophyll Stability Index and Yield of Cotton under Moisture Stress Condition

Kannan¹,

Srinivasan²,

Babu³

et al. 2017

Int.J.Curr.Microbiol.App.Sci

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“…Laghari et al (2015) reported biochar improved sorghum grain yields grown in desert sand (Kubuqi Desert, China) and attributed it to improved soil moisture retention. However, Deng et al (2017) observed no increase in sorghum biomass and grain yield due to biochar addition (10 Mg/ha) from their study carried out in South Sudan even though the plant available water capacity (AWC) of the soil had been increased by 30%.…”

Section: Introductionmentioning

confidence: 94%

“…The maximum and minimum temperatures were 27.6°C and 17.2°C, respectively, and relative humidity was 60%. These conditions were used to mimic the conditions in South Sudan where a field experiment had been carried out (Deng et al, 2017).…”

Section: Growth Conditionsmentioning

confidence: 99%

“…Sorghum is believed to have originated in Africa, and, largely due to its resistance to drought (Brauer and Baumhardt, 2016), it is the second most important cereal crop in the continent after maize and the only affordable cheap source of food for many rural populations (Edmonds et al 2009). Although there is potential to increase sorghum production globally, yields particularly in Sub-Saharan Africa are very variable depending on rainfall, soil fertility and agronomic management (Mulcahy et al, 2013;Deng et al, 2017).…”

Section: Introductionmentioning

confidence: 99%

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Drought stress and Acacia seyal biochar effects on sorghum gas exchange and yield: A greenhouse experiment

Deng¹,

Bada²,

Tammeorg

et al. 2019

ANRES

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Article Info AGRICULTURE AND NATURAL RESOURCESDrought is the controlling abiotic stress factor affecting crop production in dryland environments and exposes millions of people to food insecurity in Africa and Asia. Although sorghum is drought tolerant, it is not sufficiently known if biochar can reduce drought-related losses in yields in clay soils for this particular crop. The stomatal morphology and gas exchange responses were investigated of a sorghum cultivar, 'Wad Ahmed' (widely grown throughout Sudan and South Sudan), to drought stress and Acacia seyal biochar application in a greenhouse pot experiment. The experiment was set up in a split-plot, randomized block design with two experimental factors: drought stress (60%, 40%, 20% of field capacity) and biochar (no biochar and 10 Mg/ha). The potting soil was clay textured with 5% carbon content. There were eight replicate pots of each treatment which were arranged randomly in six blocks giving a total of 48 pots. The experiment lasted 153 d from sowing, with 127 d of drought treatment. The results showed that while drought stress had a significant (p < 0.05) effect on gas exchange, water use efficiency, biomass and grain yield, biochar had no significant effect, and neither drought stress nor biochar had a significant effect on stomatal size and density. It may be that high doses of biochar are required to benefit crops grown under drought stress, particularly when the soils have initially high soil organic carbon content, with more time needed for any effect to become evident.

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“…S. bicolor requires 50% less water than corn, as it has a high absorption ability and low nutrient demand [2][3][4] . In addition, it contains a number of bioactive components such as dietary fibre and phenolic compounds, including flavonoid, tannin, and phenolic acids [5][6][7] .…”

Section: Introductionmentioning

confidence: 99%

Dependence of Sorghum bicolor antioxidant activity on harvest time

Jeon¹,

Kim²,

Park³

et al. 2017

ScienceAsia

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ABSTRACT:This study was done to examine the correlation between differential contents of antioxidants and their antioxidative activities in the seeds obtained from two sorghum cultivars (Nampungchal and Hwanggeumchal) according to harvest time post heading, and to understand the properties of the harvested seeds. The seeds were harvested every 5 days from 25-55 days post heading. Length, width, thickness, and morphological properties of the obtained seeds were increased in proportion to the harvest time. The weights per thousand grains, crude fat, and redness (a * ) clearly changed depending on the harvest time. The grain weight and fat content showed the highest value at harvest time days 45 (HT 45). The seed coat lightness (L * ), crude protein, total polyphenol, flavonoid, and tannin in both cultivars were inversely proportional to the harvest time. In addition, ABTS and DPPH radical scavenging activities were also reduced in inverse proportion to the elapsed harvest time. Antioxidants including polyphenol, flavonoid, and tannin showed positive correlations with the antioxidative activities such as ABTS and DPPH activities, but antioxidants and their activities had no significant correlations between cultivars. We therefore propose that sorghum harvest is performed earlier to improve its antioxidative function.

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Effects of Acacia seyal and biochar on soil properties and sorghum yield in agroforestry systems in South Sudan

Cited by 32 publications

References 51 publications

Effect of Biochar, Mulch and Ppfm Spray on Leaf Relative Water Content, Leaf Proline, Chlorophyll Stability Index and Yield of Cotton under Moisture Stress Condition

Effect of Biochar, Mulch and Ppfm Spray on Leaf Relative Water Content, Leaf Proline, Chlorophyll Stability Index and Yield of Cotton under Moisture Stress Condition

Drought stress and Acacia seyal biochar effects on sorghum gas exchange and yield: A greenhouse experiment

Dependence of Sorghum bicolor antioxidant activity on harvest time

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