Enabling food security through use of local rocks and minerals

Manning, David; Theodoro, Suzi Huff

doi:10.1016/j.exis.2018.11.002

Cited by 37 publications

(41 citation statements)

References 34 publications

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“…Rocky soil has high potential for agricultural utilization due to rich phosphorus (P), potassium (K), iron and other nutrients (Manning and Theodoro, 2018). For example, in the Sichuan Basin, the largest sweetpotato producing area in China (approximately 1.0 × 10 10 m 2 ), more than 70% of the hills (approximately 5.0 × 10 10 m 2 ) are covered by rocky soil, which can be reclaimed for sweetpotato cultivation by local farmers (Deng et al, 2014).…”

Section: Introductionmentioning

confidence: 99%

Low Nitrogen Fertilization Alter Rhizosphere Microorganism Community and Improve Sweetpotato Yield in a Nitrogen-Deficient Rocky Soil

Ding

Jin

et al. 2020

Front. Microbiol.

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Sweetpotato can be cultivated in the reclaimed rocky soil in Sichuan Basin, China, which benefits from the release of mineral nutrients in the rocky soil by microorganisms. Shortage of nitrogen (N) in the rocky soil limits sweetpotato yield, which can be compensated through N fertilization. Whereas high N fertilization inhibits biological N fixation and induces unintended environmental consequences. However, the effect of low N fertilization on microorganism community and sweetpotato yield in the N-deficient rocky soil is still unclear. We added a low level of 1.5 g urea/m 2 to a rocky soil cultivated with sweetpotato, and measured rocky soil physiological and biochemical properties, rhizosphere microbial diversity, sweetpotato physiological properties and transcriptome. When cultivating sweetpotato in the rocky soil, low N fertilization (1.5 g urea/m 2) not only improved total N (TN) and available N (AN) in the rocky soil, but also increased available phosphorus (AP), available potassium (AK), and nitrogenase and urease activity. Interestingly, although low N fertilization could reduce bacterial diversity through affecting sweetpotato root exudates and rocky soil properties, the relative abundance of P and K-solubilizing bacteria, N-fixing and urease-producing bacteria increased under low N fertilization, and the relative abundance of plant pathogens decreased. Furthermore, low N fertilization increased the phytohormones, such as zeatin riboside, abscisic acid, and methyl jasmonate contents in sweetpotato root. Those increases were consistent with our transcriptome findings: the inhibition of the lignin synthesis, the promotion of the starch synthesis, and the upregulated expression of Expansin, thus resulting in promoting the formation of tuberous roots and further increasing the sweetpotato yield by half, up to 3.3 kg/m 2. This study indicated that low N fertilization in the N-deficient rocky soil improved this soil quality through affecting microorganism community, and further increased sweetpotato yield under regulation of phytohormones pathway.

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Section: Introductionmentioning

confidence: 99%

Low Nitrogen Fertilization Alter Rhizosphere Microorganism Community and Improve Sweetpotato Yield in a Nitrogen-Deficient Rocky Soil

Ding

Jin

et al. 2020

Front. Microbiol.

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“…Several studies have investigated the ability of ground rocks to provide nutrients, in particular potassium for growing crops (Manning, 2018). Ramezanian et al (2013) reports the use of crushed volcanic rocks; positive responses are also found by Bakken et al (2000).…”

Section: Introductionmentioning

confidence: 94%

Alternative for potassic fertilization of vegetables in organic management in low fertility natural soil of the humid tropics

Santos

2020

Emir J Food Agric

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The organic food production and mainly the demand for these products have been growing much worldwide, and with this rising demand there is need for more adequate soil management. Organic fertilization is one of the points to improve and the alternative sources of nutrients should be better evaluated. Potassium is an essential nutrient required in large quantities by greenery and fruit, but according to the legislation of organic production, it can only be used as crushed rocks such as potassium sulfate. The objective of this work was to evaluate the efficiency of potassium sulfate (soluble source), wood ash and marble powder as alternative sources of potassium in organic system, using hybrid maize AG 1051 as the indicator crop. The experimental design applied was in randomized blocks in the 3x4x2 factorial scheme, consisting of three potassium sources applied in four doses (0, 60, 90 and 120 kg ha-1 K2O) in the presence and absence of Biofertilizer, with four repetitions. The data were submitted to analysis of variance (ANOVA) and the averages were compared by the Tukey test (p < 0.05). Both wood ash and marble powder tested can be used as complementary potassium fertilization in organic production systems. Marble powder proved to be the most efficient among the treatments and the Biofertilizer did not have a significant effect on the evaluated characteristics.

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“…Perante sua importância, é comum estudos que visem melhorar sua produtividade, sendo o uso de fertilizantes minerais algo muito recorrido (Jing et al, 2019;Srivastava et al, 2019). No entanto, é uma tecnologia cara, não estando, portanto, acessível a todos os produtores, principalmente os mais pobres, sendo assim necessário a busca de fertilizantes alternativos como fonte de nutrientes para a cultura (Manning & Theodoro, 2018). De acordo com Camargo et al (2012), a aplicação de pó de rochas como fertilizantes químicos apresenta vantagem em relação ao custo reduzido e produtividade, diminuindo a demanda de fertilizantes convencionais, além de incrementar na velocidade de resposta do crescimento das plantas, melhorar a fertilidade do solo e mitiga impactos ambientais.…”

Section: Introductionunclassified

“…Assim, a rochagem (uso de pó de rochas moídas para a recuperação da fertilidade do solo) é uma técnica que além de gerar benefícios para as plantas e agricultores devido ser uma técnica mais barata, também reduz os danos ao meio ambiente, devido minimizar o acúmulo de nutrientes nos locais onde as rochas são extraídas (Manning & Theodoro, 2018;Aguilera et al, 2020). Diante do exposto, objetivou-se com presente estudo avaliar a disponibilidade de P e K por meio de pós de rochas coletadas em diferentes locais e seus efeitos no desenvolvimento de plantas de milho.…”

Section: Introductionunclassified

Pós de rochas regionais como fonte de fósforo e potássio para plantas

Ratke

ANDRADE

Rocha

et al. 2020

RSD

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Rock dust contains nutrients that can improve the nutritional development of plants. Thus, the objective was to evaluate the availability of phosphorus (P) and potassium (K) through rock powders collected in different locations and their effects on the development of corn plants. Three sources of rock powders were used [collected in Campo Alegre de Lourdes-BA (R1), Gilbués-PI (R2), and Cristalândia-PI (R3)], characterized by diffractometry, granulometry, and the dissolution of P and K in a thermodynamic process. After the physicochemical characterization of the powders, different doses (2.0; 6.0; 8.0 and 10.0 t ha-1) were applied to the soil to analyze its effects on corn plants. In the rock R1, the presence of muscovite (mica) and apatite (phosphates) was observed, in R2 the presence of muscovite (mica) and orthoclase (feldspar) and in R3 the presence of muscovite (mica) and microcline. The rocky dust materials showed dissolution of P and K in an acid medium in the aqueous extract. The rocks dust collected in Gilbués-PI improved the availability of P and K and favored the development of the aerial part of the corn plants.

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Enabling food security through use of local rocks and minerals

Cited by 37 publications

References 34 publications

Low Nitrogen Fertilization Alter Rhizosphere Microorganism Community and Improve Sweetpotato Yield in a Nitrogen-Deficient Rocky Soil

Low Nitrogen Fertilization Alter Rhizosphere Microorganism Community and Improve Sweetpotato Yield in a Nitrogen-Deficient Rocky Soil

Alternative for potassic fertilization of vegetables in organic management in low fertility natural soil of the humid tropics

Pós de rochas regionais como fonte de fósforo e potássio para plantas

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