Effects of cassava allelochemicals on rubber tree pathogens, soil microorganisms, and soil fertility in a rubber tree–cassava intercropping system

2020 ◽  
Vol 23 (4) ◽  
pp. 257-271
Author(s):  
Zifan Liu ◽  
Peipei Liu ◽  
Feng An ◽  
Linlin Cheng ◽  
Ting Yun ◽  
...  
Keyword(s):  
Soil Fertility ◽  
Soil Microorganisms ◽  
Rubber Tree

Soil Microorganisms and Soil Fertility

2015 ◽  
pp. 23-43
Author(s):  
Richard P. Dick ◽  
Charles Yamoah ◽  
Mateugue Diack ◽  
Aminata N. Badiane
Keyword(s):  
Soil Fertility ◽  
Soil Microorganisms

Soil Microorganisms and Soil Fertility

2001 ◽  
Author(s):  
Guanglong Tian ◽  
Fusako Ishida ◽  
Dyno Keatinge ◽  
Richard P. Dick ◽  
Charles Yamoah ◽  
...  
Keyword(s):  
Soil Fertility ◽  
Soil Microorganisms

MINIMIZING SOIL CULTIVATION INFLUENCE FOR FERTILITY STATUS OF HEAVY LOAMY SOILS IN SPRING AND WINTER WHEAT SEEDING

2016 ◽  
Vol 1 (2) ◽  
pp. 7-11
Author(s):  
Мельникова ◽  
Natalya Melnikova ◽  
Нечаева ◽  
Elena Nechaeva ◽  
Редин ◽  
...  
Keyword(s):  
Soil Fertility ◽  
Soil Microorganisms ◽  
New Technologies ◽  
Mechanical Load ◽  
Active Surface ◽  
Soil Microflora ◽  
Point Of View ◽  
Forest Steppe ◽  
Biochemical Processes

The purpose is to justify the use of minimum and zero tillage in conditions of forest-steppe Zavolzhye region from the position of the biological activity of the soil. One of the factors forming and determining the fertility of the soil, is the activity of microorganisms that inhabit it, the active surface which reaches up to several hundred acres for 1 ha of surface topsoil. Important role in building of soil fertility is the number of major groups of microorganisms, which, being the catalysts of metabolism, objectively reflect the nature of biochemical processes. Another academician S. P. Kostychev (1937) pointed out that without the study of biodynamics the knowledge of the soil, especially from the agronomic point of view, may not be complete. Microorganisms occupy a key position in maintaining biochemical capacity of the soil, so monitoring of soil microflora is essential for the maintenance and reproduction of its fertility. This work is devoted to studying the role of soil microorganisms in the process of maintaining and reproduction of soil fertility in the development of new technologies in agriculture. The article presents data on the effect of basic tillage on the number of different groups of soil microorganisms (micromycetes, bacteria, actinomycetes), Shows the number of soil microorganisms, such as micromycetes (mold fungi) and bacteria are significantly influenced by seasonal changes in temperature and humidity than the soil treatment methods. From which it follows that the reduction of the mechanical load on the soil in the forest-steppe of Zavolzhye a significant impact on the number of major groups of microorganisms has not.

scholarly journals Short-term effects of organic amendments on soil fertility and root growth of rubber trees on Hainan Island, China

2019 ◽  
Vol 31 (6) ◽  
pp. 2137-2144 ◽  
Author(s):  
Yanyan Huang ◽  
Yudan Jing ◽  
Meirong Bei ◽  
Hongzhu Yang ◽  
Zhengzao Cha ◽  
...  
Keyword(s):  
Root Growth ◽  
Soil Fertility ◽  
Rubber Tree ◽  
Organic Matter Content ◽  
Organic Amendments ◽  
Chemical Fertilizer ◽  
Root Surface Area ◽  
Available Phosphorus ◽  
Short Term ◽  
Coconut Husk

Abstract Rubber [Hevea brasiliensis (Willd. ex A.Juss.) Müll.Arg.] plantations are the largest cultivated forest type in tropical China. Returning organic materials to the soil will help to maintain the quality and growth of rubber trees. Although many studies have demonstrated that organic waste materials can be used to improve soil fertility and structure to promote root growth, few studies have studied the effects of organic amendments on soil fertility and root growth in rubber tree plantations. Here, bagasse, coconut husk or biochar were applied with a chemical fertilizer to test their effects on soil properties after 6 months and compared with the effects of only the chemical fertilizer. Results showed that the soil organic matter content, total nitrogen, available phosphorus and available potassium after the chemical fertilizer (F) treatment were all significantly lower than after the chemical fertilizer + bagasse (Fba), chemical fertilizer + coconut husk (Fco) or chemical fertilizer + biochar (Fbi) (p < 0.05). Soil pH in all organic amendments was higher than in the F treatment, but was only significantly higher in the Fbi treatment. In contrast, soil bulk density in the F treatment was significantly higher than in treatments with the organic amendments (p < 0.05). When compared with the F treatment, soil root dry mass increased significantly by 190%, 176% and 33% in Fba, Fco and Fbi treatments, respectively (p < 0.05). Similar results were found for root activity, number of root tips, root length, root surface area and root volume. Conclusively, the application of bagasse, coconut husk and biochar increased soil fertility and promoted root growth of rubber trees in the short term. However, bagasse and coconut husk were more effective than biochar in improving root growth of rubber trees.

Soil Fertility and Soil Microorganisms

2014 ◽  
pp. 107-142 ◽  
Author(s):  
Haruo Tanaka ◽  
Akane Katsuta ◽  
Koki Toyota ◽  
Kozue Sawada
Keyword(s):  
Soil Fertility ◽  
Soil Microorganisms

scholarly journals Increasing the abundance of microorganisms in a regosol soil using biopelet fertilizer composed from biochar, chicken manure, and shrimp waste to increase soil fertility

2021 ◽  
Vol 8 (4) ◽  
pp. 2881-2890
Author(s):  
Sugeng Winarso ◽  
Wachju Subchan ◽  
Tri Candra Setiawati ◽  
Sukron Romadhona Sukron Romadhona
Keyword(s):  
Soil Fertility ◽  
Soil Microorganisms ◽  
Block Design ◽  
Chicken Manure ◽  
Shrimp Waste ◽  
Fish Waste ◽  
Organic C ◽  
Randomized Block Design ◽  
Two Factors ◽  
Four Levels

Results of previous research have proven that soil organic matter (humic and biochar compounds) can increase and maintain soil fertility and protect environmental resilience. The purpose of this study was to increase the abundance of microorganisms in young soil (regosol) with biopelet fertilizer composed of a combination of biochar, chicken manure, and shrimp waste to improve soil fertility. The experimental design used was a randomized block design with two factors, namely the composition and dosage of biopelets. The compositions of biopelet were 70% biochar, 15% chicken manure and 15% fish waste (B1); 50% biochar, 25% chicken manure and 25 % fish waste (B2): and 20% biochar, 40% chicken manure and 40% fish waste (B3). The dosage used was four levels (0, 2.5, 5, and 10 t/ha).The results showed that the application of biopelet fertilizer to the regosol soil reduced soil pH from slightly alkaline to near neutral, and the addition of up to 10 t biopelet/ha increased soil organic C content from 1.17% to 1.72%, as well as increasing the availability of N, P, and K nutrients. Improvement in pH, organic-C, and soil macronutrients was followed by an increase in the abundance of soil microorganisms, especially bacteria.

scholarly journals Improving Productivity of Traditional Andean Small Farmers by Bio-Rational Soil Management: I. The Potato Case

2016 ◽  
Vol 16 (2) ◽  
pp. 270-290
Author(s):  
J. Franco ◽  
G. Main ◽  
O. Navia ◽  
N. Ortuño ◽  
J. Herbas
Keyword(s):  
Soil Fertility ◽  
Soil Microorganisms ◽  
Potato Production ◽  
Natural Soil ◽  
Natural Forests ◽  
Yield And Quality ◽  
Andean Potato ◽  
Chemical Pesticides ◽  
Considerable Damage

The use of chemical pesticides in agriculture demands high investments; its in discriminated and inadequate application to obtain immediate crop response has caused considerable damage to the environment and human health, either due to a direct effect or indirect contamination of farmer fields and water sources by highly toxic products. On the other hand, as a result of soil fertility losses, farmers move to new areas for farming, causing a complex migration phenomena and devastation of natural forests. In an effort to find new alternatives for the management of crop pests compatible with the environment and agro-ecologically friendly, some technologies recently developed have been offered to small Andean potato farmers. Among these, the recycling of organic residues and the management of natural soil microorganisms which are important alternatives to reduce the importation and use of toxic agro-chemicals as well as to preserve and recuperate soil fertility and thus reach a sustainable potato production by Andean farmers. This will not only guarantee food security, but will also have favorable impact on the yield and quality of potato and other crops.Accepted for publication: December 28, 2011

scholarly journals ANALISIS KESUBURAN TANAH DENGAN INDIKATOR MIKROORGANISME TANAH PADA BERBAGAI SISTEM PENGGUNAAN LAHAN DI PLATEAU DIENG

Agric ◽  
2016 ◽  
Vol 25 (1) ◽  
pp. 64 ◽  
Author(s):  
Susilawati ◽  
Eriandra Budhisurya ◽  
R. C. W. Anggono ◽  
Bistok Hasiholan Simanjuntak
Keyword(s):  
Land Use ◽  
Soil Erosion ◽  
Soil Fertility ◽  
Soil Microorganisms ◽  
Block Design ◽  
Forest Area ◽  
Water Runoff ◽  
Carbon Biomass ◽  
Soil Erosion Rate

<p>Dieng is a plateau region, with an altitude about ± 2095 meters above sea level. Dieng Plateau is unique land because that has low air temperature and soil dominated Andisol and has various land slope from 0 percent until &gt;40 percent. Therefore, Dieng Plateau is ideal land for horticultural cultivations. The serious problem in Dieng Plateau was conducted intensively conversion the forest area to the various land use system, to example for land potatoes cultivation, settlements and tourist activity. These conditions increasing hazard for the rate soil erosion. High soil erosion rate will decrease the soil fertility.</p><p>This study aims to determine the level of soil fertility with indicators of soil microorganisms in a various of land use, given the high levels of soil erosion. The layout design of the research used is a Randomized Complete Block Design (RCBD). Analysis of the data used is Analysist of Variance – ANOVA (F test), Honestly Significant Analysis (5%) and Stepwise Regressiont. To determination the number of carbon biomass of microorganisms is applied with fumigation-extraction method. For<br />determination of total soil microorganisms using NA media, where as the determination of soil respiration using Verstraete method.</p><p>The results showed that the land is sloping physiography (tourist land and residential) have higher fertility than high physiographic area, as a result of soil erosion. Different case for protected forests, although a high physiographic land, forests have higher fertility than the land potatos cultivation. Forest area are still natural, and its has a vegetation litter and diversity of vegetations, therefor the forest area has good barrier water runoff that carries organik material and soil salts.</p>

scholarly journals Composition of microbial communities of leached chernozem depending on agricultural crops

2020 ◽  
Author(s):  
Yu.Yu. Khatuntseva ◽  
◽  
I.V. Cherepukhina ◽  
N.S. Gorbunova ◽  
A.I. Gromovik ◽  
...  
Keyword(s):  
Soil Fertility ◽  
Soil Microorganisms ◽  
Organic Phosphorus ◽  
Inorganic Phosphorus ◽  
Phosphorus Compounds ◽  
Quantitative Calculation ◽  
Leached Chernozem ◽  
Activity Of Enzymes ◽  
Agricultural Plants ◽  
Resistant Structure

A large role in the creation of soil fertility and water-resistant structure, in the processes of humus synthesis and mineralization, as well as in the provision of agricultural plants with elements of mineral nutrition, belongs to soil microorganisms. For leached chernozem, the influence of field crops on the main groups of microorganisms, which are involved in the formation of effective and potential soil fertility, and associated enzymes was established. The purpose of the work is to study the effect of agricultural plants on the structure of the microbial community of the soil and the activity of enzymes involved in the formation of effective and potential soil fertility. Soil samples were taken from the 0-25 cm layer. They differed in anthropogenic load: virgin soil and soil where crops were cultivated. To count the number of soil microorganisms in the crops and their rhizospheres, we used the method of culturing successive dilutions of the soil suspension on selective nutrient media. The catalase activity of the soil was determined by the gasometric method. It is based on measuring the decay rate of hydrogen peroxide when it is interconnected with the soil in terms of the amount of oxygen released. The method for determining phosphatase activity is based on the quantitative calculation of inorganic phosphorus, which is formed by the breakdown of organic phosphorus compounds under the action of phosphatases.

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