Soil enzymatic activities in a hilly coffee plantation in lampung province, South Sumatra, Indonesia, under plant cover management

Salam, Abdul Kadir; Afandi, Afandi; Sriyani, Nanik; Kimura, Makoto

doi:10.1080/00380768.2001.10408434

Cited by 8 publications

(4 citation statements)

References 11 publications

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“…A large number of studies have been carried out on the changes in soil chemical properties (Lumbanraja et al 1998), organic matter content . humus composition , soil enzyme activities (Salam et al 2001). and also water nm-off and soil erosion (Afandi et al 1999) in disturbed areas of Lampung province, Sumatra island.…”

mentioning

confidence: 99%

Effect of land degradation on soil microbial biomass in a hilly area of south Sumatra, Indonesia

Turgay

Lumbanraja

Yusnaini

et al. 2002

Soil Science and Plant Nutrition

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mentioning

confidence: 99%

Effect of land degradation on soil microbial biomass in a hilly area of south Sumatra, Indonesia

Turgay

Lumbanraja

Yusnaini

et al. 2002

Soil Science and Plant Nutrition

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“…More recently, Sarno et al (2004) reported that the presence of native understorey (Chromolaena odorata, Clidemia hirta, Imperata cylindrica, Melastoma affi ne, and Mikania micrantha) in a coffee plantation in a Vertic Dystrudept soil in Sumber Jaya, West Lampung, Indonesia increased available P compared with available P in the absence of these understorey species. In another study, Salam et al (2001) reported that in a coffee plantation, soil phosphatase activities in bulk soils in the plots with native understorey (158 μg p-nitrophenol g -1 h -1 ) were higher than those in the plots without understorey (108 μg p-nitrophenol g -1 h -1 ). In the rhizosphere soils the phosphatase activity difference between these plots might have been even higher (Trolove et al, 2003) but this was not measured in this study.…”

Section: Introductionmentioning

confidence: 93%

Rhizosphere pH and Phosphatase Activity in Orthic Allophanic Soil Under Pinus radiata Seedlings Grown with Broom and Ryegrass

Rivaie

Tillman

2009

Ina.J.For.Res

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Under Pinus radiata plantations where the tree spacing is wider and most soils are phosphorus (P) defi cient, the radiata tree response to P fertilizer is expected to be more infl uenced by the interaction between the applied P fertilizer, the tree and understorey vegetation. Therefore, a better understanding of the soil P chemistry under radiata pine trees in association with other plants is required. We investigated the effect of broom (Cytisus scoparius L.) and ryegrass (Lolium multifl orum) grown with radiata seedlings in Orthic Allophanic Soil treated with 0, 50, and 100 μg P g -1 soil of TSP on the pH and phosphatase activity in the rhizosphere soils under glasshouse condition. The pHs of radiata rhizosphere soils either grown with broom or grass were lower than those in the bulk soils and the bulk and rhizosphere soils of grass and broom, whether they were grown alone or grown with radiata at the applications of 50 and 100 μg P g -1 soil. These results suggest that P application enhanced root induced acidifi cation in a P-defi cient Allophanic Soil under radiata. The soils in the rhizosphere of grass and broom, grown in association with radiata, were also acidifi ed by the effect of radiata roots. Acid phosphatase activity in soils under radiata, grass and broom decreased with an increased rate of P application. At all P rates, acid phosphatase activity was higher in the rhizosphere of radiata grown with broom than in the bulk soils. The phosphatase activity in the rhizosphere soil of radiata grown with broom was also higher than that of radiata grown with grass, but it was slightly lower than that in the rhizosphere of broom grown alone. These results suggest that broom may have also contributed to the higher phosphatase activity in the rhizosphere soils than in the bulk soils of broom and radiata when they were grown together.

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“…This condition will stabilize the water tension at field capacity (pF) on the soil, stabilizing the force of attraction between water molecules (cohesion) and between water molecules and soil particles (adhesion) becomes. If cohesion is stronger than adhesion, the water can't be bound by soil pores [24,25]. In addition to being influenced by the adhesive power, the soil's ability to bind water also depends on the type of soil.…”

Section: Water Deficitmentioning

confidence: 99%

Drought Stress: Responses and Mechanism in Plants

Pamungkas¹,

Suwarto

Suprayogi

et al. 2022

RAS

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The function of water for plants is crucial, including playing the roles in metabolic reactions. The aims of this article are to give information on the effects of drought stress on plant morphology, physiology, and biochemistry, as well as mitigation methods in drought stress management for plant production. Plants manage drought stress using a mechanism, namely drought escape, drought avoidance and drought tolerance. Drought escape is the ability of plants to accelerate flowering or life cycle, drought avoidance is the ability of plants to reduce water loss and increase water absorption through morphological changes in the root system, drought tolerance is the plant adaptation to drought by changes in plant physiological and biochemical processes. Physiological changes that occur include closing the stomata and decreased photosynthesis. The biochemical responses include the synthesis of solute compounds as a form of osmotic adjustment in the cell called osmotic adjustment to reduce water loss from the cell. The biochemical indicators are the increased concentrations of abscisic acid (ABA), proline, and sugar (trehalose). ABA acts as a signal to stimulate stomatal closure to reduce the transpiration rate. Proline is an indicator of plants adapting to drought stress, playing a role in the osmotic adjustment of cells to retain in the cell. Trehalose is a compatible sugar acting as an osmoprotectant, it can maintain the integrity of cell membranes (water replacement) and form hydrogen bonds (water entrapment). Plants under drought stress conditions can adapt by making morphological, physiological, and biochemical responses by osmotic adjustment. These conditions need to be managed so that appropriate strategies and technologies are needed as mitigation measures.

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Soil enzymatic activities in a hilly coffee plantation in lampung province, South Sumatra, Indonesia, under plant cover management

Cited by 8 publications

References 11 publications

Effect of land degradation on soil microbial biomass in a hilly area of south Sumatra, Indonesia

Effect of land degradation on soil microbial biomass in a hilly area of south Sumatra, Indonesia

Rhizosphere pH and Phosphatase Activity in Orthic Allophanic Soil Under Pinus radiata Seedlings Grown with Broom and Ryegrass

Drought Stress: Responses and Mechanism in Plants

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