Enzyme activities in the rhizosphere of pepper (Capsicum annuum, L.) grown with olive cake mulches

Benítez, Emilio; Melgar, Raquel; Sainz, H.; Gómez, Maria Margarita Ramírez; Nogales, R.

doi:10.1016/s0038-0717(00)00156-5

Cited by 52 publications

(29 citation statements)

References 30 publications

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“…Addition of microorganisms and enzymes in the amendment or indirectly to the addition of available organic substrates has been stated to promote the growth of indigenous microorganisms and hence increase soil dehydrogenase activity (Garcia et al 1994;Benitez et al 2000). Dehydrogenase activity in Oilcon-L treatment showed no statistically significant change during first 40 days (LSD, 0.660, *P < 0.05) and its stimulation seemed to appear at 60 days of incubation.…”

Section: Discussionmentioning

confidence: 99%

Effect of humic deposit (leonardite) on degradation of semi-volatile and heavy hydrocarbons and soil quality in crude-oil-contaminated soil

Turgay

Erdoğan

Karaca

2009

Environ Monit Assess

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In order to investigate the bioremedial potential of humic deposit (leonardite), the effects of the treatments of leonardite and a commercial bioaugmentation agent on the degradation of a variety of petroleum hydrocarbons (C13-C31) and soil enzyme activities (urease acid-alkaline phosphatase and dehydrogenase) were tested within a soil incubation experiment lasting 120 days. Experimentally crude-oil-contaminated soil (2.5%) was regulated to a C:N:P ratio (100:15:1; Oilcon), amended with 5% of leonardite and regulated to the same C:N:P ratio (Oilcon-L) or mixed with a commercial bioaugmentation product (Oilcon-B), respectively. In the short period of incubation (60 days), Oilcon and Oilcon-B treatments showed higher hydrocarbon degradations, whereas Oilcon-L showed higher hydrocarbon degradation over Oilcon and Oilcon-B treatments in the long-term (120 days). Applying contaminated soil with leonardite increased urease (LSD, 4.978, *P<0.05) and dehydrogenase (LSD, 0.660, *P<0.05) activities. However, acid and alkaline phosphatase activities showed no certain inclination between different treatments. Dehydrogenase seemed to be more related to hydrocarbon degradation process. Overall results showed that leonardite enhanced biodegradation of petroleum hydrocarbons and also stimulated soil ecological quality measured as soil enzyme activities.

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Section: Discussionmentioning

confidence: 99%

Effect of humic deposit (leonardite) on degradation of semi-volatile and heavy hydrocarbons and soil quality in crude-oil-contaminated soil

Turgay

Erdoğan

Karaca

2009

Environ Monit Assess

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“…Organic wastes have been used to increase crop productivity of horticultural soils (Abdelhamid et al 2004;Arancon et al 2003;Benítez et al 2000;Lee et al 2004;Singh and Agrawal 2007;Warman and Havard 1997) due to their beneficial effects on the physical, chemical and biological properties of soil resulting from improved soil structure, provision of plant nutrients, increased humus content, cation exchange capacity, and an enhanced microbiological biomass and activity (Barzegar et al 2002;Navas et al 1998;Pascual et al 2007;Saviozzi et al 1999). …”

Section: Introductionmentioning

confidence: 99%

Effect of sanitized and non-sanitized sewage sludge on soil microbial community and the physiology of pepper plants

et al. 2008

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A greenhouse experiment was conducted to investigate the impact of sanitized (Autothermal Thermophilic Aerobic Digested, ATAD) and nonsanitized (Anaerobic Mesophile Digested) sewage sludge on the activity and functional diversity of soil microbial community and the physiology of pepper plants (Capsicum annuum L. cv. Piquillo). ATAD and anaerobic mesophile sludges were applied to soils at three rates (3, 6 and 12 g (dry matter) per pot) and unamended soil was included as a control. Results showed that ATAD and mesophile sludge application increased the growth and yield of plants, and accelerated their phenological development as the sludge rate increased.

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“…Caire et al (2000) obtained an increase of 30% in dehydrogenase enzymatic activity when adding microorganisms to the soil. Benitez et al (2000) also obtained an increase of 20% in the dehydrogenase enzymatic activity when testing the addition of dead coverage and microorganisms. Srinivas & Raman (2002) added 10 t/ha of the organic fertilizer FYM, which is rich in microorganisms, and obtained significant increases in the activity of dehydrogenase.…”

Section: Resultsmentioning

confidence: 84%

Acceleration of the decomposition of Sicilian lemon leaves as an auxiliary measure in the control of citrus black spot

Bellotte¹,

Kupper²,

Rinaldo³

et al. 2009

Trop. plant pathol.

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In the current study, various treatments were used in the acceleration of decomposition in Sicilian lemon leaves as an auxiliary measure to control citrus black spot. The treatments tested were: 1) urea (12.5 g/L); 2) calcium nitrate (12.5 g/L); 3) dolomitic limestone (2 t/ha); 4) Embiotic® (commercial composting accelerator -1% of the activated product); 5) Soil-Set® + Compostaid® (0.75 mL/L + 0.75 g/L; and 6) control. Treatments 1, 2, 4, and 5 were applied in solution under the plant's crowns (800 L/ha), while dolomitic limestone was applied to only one side of the plant using a drop spreader. The most efficient treatment in reducing leaf weight was with urea, calcium nitrate and Soil-Set® + Compostaid®. In relation to cellulose, Embiotic® and Soil-Set® + Compostaid® reduced the same content showing a high efficiency in the decomposition rate of the lemon leaves. As for the dehydrogenase activity, there was an increase in the first and second evaluations, followed by a reduction in the second and third observations, amounting to 9.90% for dolomitic limestone, and 72.41% for the control. The results showed the viability of accelerating decomposition of citrus leaves fallen on the soil as a supplementary control measure for Guignardia citricarpa. Keywords: Guignardia citricarpa, Phyllosticta citricarpa, Citrus limo, Cultural control. RESUMO Aceleração da decomposição de folhas de limoeiro 'Siciliano' como medida auxiliar no controle da mancha preta dos frutos cítricosNesse estudo foram avaliados tratamentos quanto à aceleração da decomposição de folhas de limoeiro `Siciliano`, como medida auxiliar no controle da mancha preta dos citros. Os tratamentos testados foram: 1) uréia (12,5 g/L); 2) nitrato de cálcio (12,5 g/L); 3) calcário dolomítico (2 t/ha); 4) Embiotic® (acelerador de compostagem -1% do produto ativado); 5) Soil-Set® + Compostaid® (0,75 mL/L + 0,75 g/L) e 6) Testemunha. Os tratamentos 1, 2, 4 e 5 foram aplicados em solução sob a copa das plantas (800 L/ha), enquanto o calcário o foi com um distribuidor, direcionando o produto para um lado da planta. Os tratamentos mais eficientes na redução do peso das folhas foram uréia, nitrato de cálcio e Soil-Set® + Compostaid®. Quanto à cellulose, Embiotic® e Soil-Set® + Compostaid® reduziram o conteúdo da mesma, mostrando alta eficiência na taxa de decomposição das folhas. Quanto à atividade da dehydrogenase, houve aumento da mesma entre a primeira e segunda avaliações, seguido de redução entre a segunda e terceira avaliações, sendo essas entre 9,90%, no caso do calcário dolomítico e 72,41%, na testemunha. Os resultados demonstraram viabilidade da aceleração da decomposição das folhas cítricas caídas no solo como medida suplementar ao controle de Guignardia citricarpa.

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Enzyme activities in the rhizosphere of pepper (Capsicum annuum, L.) grown with olive cake mulches

Cited by 52 publications

References 30 publications

Effect of humic deposit (leonardite) on degradation of semi-volatile and heavy hydrocarbons and soil quality in crude-oil-contaminated soil

Effect of humic deposit (leonardite) on degradation of semi-volatile and heavy hydrocarbons and soil quality in crude-oil-contaminated soil

Effect of sanitized and non-sanitized sewage sludge on soil microbial community and the physiology of pepper plants

Acceleration of the decomposition of Sicilian lemon leaves as an auxiliary measure in the control of citrus black spot

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