scholarly journals Mycorrhizal effectiveness on physic nut as influenced by phosphate fertilization levels

2012 ◽  
Vol 36 (1) ◽  
pp. 23-32 ◽  
Author(s):  
Elcio Liborio Balota ◽  
Oswaldo Machineski ◽  
Alexandra Scherer

In recent years, physic nut (Jatropha curcas L.) has attracted attention because of its potential for biofuel production. Although it is adapted to low-fertility soils, physic nut requires soil acidity corrections and addition of a considerable amount of fertilizer for high productivity. The objective of this research was to evaluate the effectiveness of arbuscular mycorrhizal fungi (AMF) (control without AMF inoculation, Gigaspora margarita inoculation or Glomus clarum inoculation) on increasing growth and yield of physic nut seedlings under different rates of P fertilization (0, 25, 50, 100, 200, and 400 mg kg-1 P soil) in greenhouse. The experiment was arranged in a completely randomized, block in a factorial scheme design with four replications. The physic nut plants were harvested 180 days after the beginning of the experiment. Mycorrhizal inoculation increased physic nut growth, plant P concentration and root P uptake efficiency at low soil P concentrations. The P use quotient of the plants decreased as the amount of P applied increased, and the P use efficiency index increased at low P levels and decreased at high P levels. Mycorrhizal root colonization and AMF sporulation were negatively affected by P addition. The highest mycorrhizal efficiency was observed when the soil contained between 7.8 and 25 mgkg-1 of P. The physic nut plants responded strongly to P application, independent of mycorrhizal inoculation.

2017 ◽  
Vol 15 (1) ◽  
pp. 156-169 ◽  
Author(s):  
M Rahman ◽  
MAH Bhuiyan ◽  
ME Ali ◽  
F Alam ◽  
RA Begum

A pot experiment was carried out in the nethouse of Soil Science Division, Bangladesh Agricultural Research Institute, Joydebpur, Gazipur during 2014-2015 through 2015-2016. The design of the experiment was factorial randomized completely block design with 4 replications. The objectives of the study were to evaluate the potential of Arbuscular mycorrhization (AM) on the germination, yield and yield attributes of lentil treated with different concentration of sodium chloride (NaCl). Five NaCl treatments (0, 1, 2, 3 and 4%) possessed NaCl level as the first factor that were treated with soils before sowing of lentil seeds overriding or pivotal pulse crop in Bangladesh. The second factor consists of mycorrhizal and non-mycorrhizal treatments. Mycorrhizal plants showed better performance in terms of germination %, yield and yield contributing characters than non-mycorrhizal plants. With increasing NaCl concentration germination %, yield and yield contributing characters in the rhizosphere soil, decreased significantly (p<0.01). Interaction effects of mycorrhizal inoculation and NaCl on germination %, growth and yield of lentil were appeared to be statistically non-significant. The highest germination (96.25% in 2014-2015 and 92.50% in 2015-2016), seed yield (6.45 g pot-1 in 2014-2015 and 5.89 g pot-1 in 2015-2016), and stover yield (9.55 g pot-1 in 2014-2015 and 8.58 g pot-1 in 2015-2016) was found in NaCl 0% + AM treatment. The lowest germination %, seed yield and stover yield was found in NaCl 4% treatment. Mycorrhizal inoculation increased seed yield on an average by 31.85% during 2014-2015 and 63.71% during 2015-2016, and increased stover yield on an average by 48.56% during 2014-2015 and 63.55% during 2015-2016 over non-mycorrhizal inoculation. Therefore, it can be concluded that mycorrhizal inoculation increases germination %, growth and yield of lentil over non-mycorrhizal inoculation. The Agriculturists 2017; 15(1) 156-169


Jurnal Solum ◽  
2008 ◽  
Vol 5 (2) ◽  
pp. 66
Author(s):  
Teguh Budi Prasetyo ◽  
Husnita Husnita ◽  
Irwan Darfis

The main problems of Ultisols are high Al concentration, low pH, low cation exchangeable capacity (CEC), and low fertility.  The objectives of this reasearch were to study the effect of peat water deposit to some chemical properties of Ultisols and to determine the optimal level of peat water deposit for optimum corn yield.  The experimental design was the complete randomized design that consisted of 5 levels of peat water deposit (0, 800, 1600, 2400, and 3200 kg/ha).  The results showed that the application of peat water deposit could reduce exchangeable Al, increase CEC and soil P concentration, P-uptake, and corn yield.  The highest corn yield was obtained at application of 3200 kg peat water deposit /ha.Key Words : Ultisols, peat water precipitation, soil chemical characteristics, corn


2011 ◽  
Vol 23 (1) ◽  
pp. 33-44 ◽  
Author(s):  
Elcio Liborio Balota ◽  
Oswaldo Machineski ◽  
Priscila Viviane Truber ◽  
Alexandra Scherer ◽  
Fabio Suano de Souza

The physic nut (Jatropha curcas L.) is a perennial tree that occurs naturally in the tropical and subtropical regions of Brazil. Fruits of physic nut present an oil content of 28% on a dry weight basis. Although the plant has adapted to diverse soil conditions such as low fertility, the correction of soil acidity and the addition of fertilizer are essential for highly productive plants. Thus, the response of the physic nut to different soil phosphorus levels (P) and arbuscular mycorrhizal fungi (AMF) inoculation must be characterized. Hence, the objective of the present study was to evaluate the response of physic nut seedlings to arbuscular mycorrhizal fungi (AMF) inoculation at different levels of soil P. Experiment was carried out in a greenhouse encompassing AMF treatments (inoculation with Gigaspora margarita or Glomus clarum, and the non inoculated controls), and phosphorus treatments (0, 25, 50, 100, 200 and 400 mg kg-1 added to soil). At low soil P levels, arbuscular mycorrhizal fungi inoculation had a significant positive effect on plant growth, shoot and root dry matter content, plant height, number of leaves, total leaf area, leaf area per leaf and the Dickson quality index. The root:shoot ratio and the leaf area ratio were also affected by mycorrhizal inoculation and the level of P addition. Physic nut plants exhibited high mycorrhizal dependency at soil P additions up to 50 mg kg-1.


Agronomy ◽  
2021 ◽  
Vol 11 (8) ◽  
pp. 1483
Author(s):  
Thanh Tung Nguyen ◽  
Yuka Sasaki ◽  
Mitsuhiko Katahira ◽  
Dhirendranath Singh

Cow manure is a good source of phosphorus (P). Here, we investigated whether the amount of P fertilizer can be reduced when cow manure is applied to paddy soil based on growth, P uptake, yield, and soil P status evaluation. Treatments included unfertilized control (CK); manure plus chemical nitrogen (N), potassium (K), and P fertilizer (MNK P); MNK and 75% P (MNK ¾ P); MNK and 50% P (MNK ½ P); MNK and 25% P (MNK ¼ P); and MNK. Manure was applied at the rate of 10 t ha−1 in fresh weight base. The P fertilizer was applied at 34.9 kg P ha−1 as full dose. Treatment with MNK resulted in the same growth, P uptake, and yield as that with the P fertilizer. P uptake and yield did not respond to P input from chemical fertilizer owing to high soil Olsen P levels. Moreover, MNK could maintain soil Olsen P and total P. Manure application resulted in a positive partial P balance. These results suggest that manure application can cut P fertilizer requirements in P-rich soils, while maintaining soil P for optimal rice growth and yield. By using cow manure in rice production, farmers can conserve finite P resources.


2018 ◽  
Vol 64 (2) ◽  
pp. 79-95 ◽  
Author(s):  
Michiel F. Bortier ◽  
Enrique Andivia ◽  
José G. Genon ◽  
Tine Grebenc ◽  
Gaby Deckmyn

Abstract Many studies have shown the importance of ectomycorrhizal fungi (EM) in forests both for nutrient availability and for carbon (C) and nutrient cycling in the soil. Yet so far they are not incorporated in forest ecosystem growth and yield models. Recent research suggests phosphorus (P) shortage could be a major constraints to forest productivity in the future. For a realistic simulation of future forest ecosystem functioning, inclusion of detailed soil P cycling and the trees-EM interaction is necessary. We developed a full ecosystem P model that simulates P uptake by roots and EM, allocation within trees, physiological deficiency effects on C assimilation and allocation, release through litter decomposition, coupled with water, C and nitrogen (N) fluxes accounted for in the mechanistic forest stand model ANAFORE. Our results confirm the importance of incorporating EM in forest ecosystem models and suggest that the lack of incorporation of P in models may result in an under- or overestimation of forest growth. This new model has the potential of being used to assess the response of trees and/or stands to nutrient availability under different climate and management scenarios. With the current parameterization it is functional as a scientific research tool to investigate hypotheses.


2021 ◽  
Vol 306 ◽  
pp. 01049
Author(s):  
Anditya Gilang Rizky Pradana ◽  
Puji Harsono ◽  
Amalia Tetrani Sakya

Red chili is one of the strategic horticultural commodities in Indonesia. Improved cultivation technology is required to increase the production of red chili. This research aim to determines the optimal dosage of arbuscular mycorrhizal fungi (AMF) and the concentration of liquid organic fertilizer (LOF) to increase the growth and yield of red chili. The research was designed in a Factorial Randomized Complete Block. The first factor was mycorrhizae with three dosages levels: 0, 5, and 10 g plant-1. The other factor was liquid organic fertilizer with 4 level concentrations of 0, 5, 10, and 15 ml l-1. The result shows that mycorrhizal inoculation increase the root absorption area. Liquid organic fertilizer increased nutrient sources for plants and improved the physical, biological, and chemical soil. Mycorrhizal inoculation and LOF improved the growth of red chili, there were plant height, number of branches, stem diameter, header width, and leaf area index. The yield components also increased the number of fruit, fruit length, fruit weight, and productivity. The highest productivity was resulted by the treatment of AMF 10 g plant-1 and 15 ml l-1 LOF (11.16 t ha-1), that was 33% higher than without treatment.


Soil Research ◽  
1997 ◽  
Vol 35 (2) ◽  
pp. 241 ◽  
Author(s):  
Kevin A. Handreck

The phosphorus (P) requirements of Australian plants are reviewed. Many Australian plants have highly developed abilities for acquiring and conservatively using P. This is seen as an evolutionary response to the combined environmental pressures of fire, soil P levels that are in the lower part of the range for world soils, and low and eratic rainfall. In natural Australian ecosystems, more than 50% of the P in the A horizon is in organic combination. Organic matter is the main source for the growth of perennial plants, so the only successful assessments of ‘available’ P measure labile organic P and microbial P. However, the inorganic P of ashbeds is essential to the rapid establishment of fire ephemerals and tree seedlings in natural ecosystems. Almost all Australian plants develop associations with mycorrhizal fungi, or produce hairy roots, as ways of increasing P uptake. Highly developed abilities to redistribute P from ageing to young tissues enable Australian plants to have a low P requirement per unit of biomass production. This also results in low P losses in sawlogs from natural forests, but not necessarily from short-rotation plantations. The special role of P in the ecology and conservation of heathlands is reviewed. Finally, an overview is given of the P requirements of Australian plants being grown in soil-less media in nurseries.


2021 ◽  
Author(s):  
Jake Mowrer ◽  
Ginette Dembele ◽  
Andrea Strzelec ◽  
Binita Thapa

Abstract Improving the sustainability of cotton production in Mali can be achieved by returning organic matter and nutrients to degraded soils. Amendment with biochar prepared from locally available feedstocks has been suggested as a pathway to sustainability. A greenhouse study was conducted to evaluate the effect of biochar prepared from two feedstocks readily available in Mali, cotton field residue and rice hulls, on cotton plants grown to six weeks. A composted municipal biosolid was included for comparison with the more carbon-stable biochars. Four soils of contrasting properties were included in the study. Plants were measured for shoot height and mass, root length and mass, whole plant tissue nutrients, and arbuscular mycorrhizal fungi (AMF) colonization in roots. Shoot height was often improved by amendment in all soils. Root mass was improved by amendment only in the soil with the greatest clay content. Nitrogen (N) uptake was significantly depressed, and phosphorus (P) uptake was increased under biochar and compost amendment in the most coarsely textured soil. No effect on N and P uptake was observed in the soil with the greatest clay content. Ridge regression analysis showed that AMF root colonization was positively related to the P content of the amendments (1.411*Pamend), negatively related to soil P (-0.486*Psoil) and positively related to both soil pH (2.153*pH) and clay content (1.129*clay%). Results indicate that degraded soils may be restored through amendment with biochar created from locally available feedstock to improve sustainability of cotton production. Soil properties will determine the degree of benefit.


2001 ◽  
Vol 28 (5) ◽  
pp. 391 ◽  
Author(s):  
Sarah M. Ayling ◽  
Sally E. Smith ◽  
F. Andrew Smith

The effect of colonisation by arbuscular mycorrhizal (AM) fungi on the relationship between phosphorus (P) uptake and root membrane electric potential difference (p.d.) was investigated in leek (Allium porrum L.). Plants were grown, with or without the AM fungus Scutellospora calospora (Nicolson and Gerdemann) Walker and Sanders, in soil. P uptake and root p.d. were correlated; plants with the highest P concentration in the shoot had the most negative p.d. This relationship was strong in non-mycorrhizal leeks (r2 = 84–98%), but weaker in mycorrhizal leeks (r2 = 55–64%), consistent with the idea that in mycorrhizal roots the fungal hyphae are the principal site of P uptake.


2015 ◽  
Vol 154 (5) ◽  
pp. 828-849 ◽  
Author(s):  
J. A. P. PEREIRA ◽  
I. J. C. VIEIRA ◽  
M. S. M. FREITAS ◽  
C. L. PRINS ◽  
M. A. MARTINS ◽  
...  

SUMMARYThe benefits of mycorrhizal inoculation on growth, yield and nutrition of plants are well documented. However, mycorrhiza use in pepper and sweet pepper crops (Capsicumspp.) is still rarely exploited compared to other crops of economic importance. The current paper reviews the main aspects of the association between arbuscular mycorrhizal (AM) fungi and plants of pepper and sweet pepper. It includes topics about the effects of AM fungi on nutrition, growth and yield inCapsicumspp., paying particular attention to AM fungi–pathogen interactions, responses to some environmental stresses, as well as biochemical and physiological aspects of AM fungi–plant interaction inCapsicum annuumL.


Sign in / Sign up

Export Citation Format

Share Document