Optimum dosage of rice husk-based silicon foliar spray to improve yield of soybean grown on irrigated lowland

Background: The Fe toxicity is a perpetual problem of low lying poorly drained acid soils. It also affects the solubility and availability of most of the plant nutrients, by reducing toxic concentrations of iron, aluminum and manganese. To overcome these constraint, application of lime is inevitable but high cost of liming materials necessitate the use of low-cost, internally sourced, environmentally friendly and adoptable organic sources. In present study rice husk ash was used as a soil ameliorant in lieu of liming. Methods: A field experiment was conducted at Rice Research Station, Moncompu during 2017-2018 with nine treatments replicated thrice in RBD using rice variety Uma. A customized formulation with composition of K (8.9 %), Mg (3.2 %), Ca (3.7 %), Zn (2.1 %), Mn (0.23 %), B (3.5 %) and Cu (0.96 %) was developed based on the available nutrient status of the region and crop requirement and used for supplementary foliar nutrition. Result: It was found that treatment comprising of Soil test based RDF + Rice husk ash @ lime (based on pH) + foliar spray of 0.5 % solution of customized formulation @ 5 kg ha-1 as foliar application of 0.5 % solution in two splits at maximum tillering and panicle initiation stage was the best treatment in increasing yield by 23 % compared to recommended dose of lime and fertilizer application and B:C ratio increased from 1.53 to 1.91. Effect of rice husk ash in ameliorating soil acidity was found to be on par with application of lime based on pH in acid sulphate soils of Kuttanad zone.

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Comparative Effectiveness Of Seed Treating And Foliar Insecticides Against Sucking Pests Of Cotton And Impact On Their Natural Enemies

Bangladesh Journal of Agricultural Research ◽

10.3329/bjar.v38i1.15190 ◽

2013 ◽

Vol 38 (1) ◽

pp. 61-70 ◽

Cited By ~ 1

Author(s):

SMA Hossain ◽

MA Baque ◽

MR Amin

Keyword(s):

Natural Enemies ◽

Untreated Control ◽

Seed Treatment ◽

Foliar Spray ◽

Cost Ratio ◽

Research Station ◽

Benefit Cost Ratio ◽

Benefit Cost ◽

Thrips Population ◽

Cotton Cultivar

The Imidacloprid insecticide, Gaucho 70 WS at 1.5, 2.5, 3.5, 4.5 and 5.5 g/kg seed was used as seed treatment and monocrotophos 40 WSC at 1120 ml/ha was applied as foliar spray on CB9 cotton cultivar to suppress aphid, whitefly and thrips, and impact on their natural enemies during 2008-2011 at the Regional Cotton Research Station, Dinajpur, Bangladesh. The activity of natural enemies, such as ladybird beetle, lacewing, syrphid, and spider population on the sucking pests attacking cotton cultivar CB9 and yield of cotton were recorded. Imidacloprid significantly reduced aphid, whitefly, and thrips population on cotton crops compared to untreated control or foliar spray of monocrotophos 40 WSC at 1120 ml/ha. Ladybird beetles, lacewings, syrphids, and spiders were abundant in the field but their population decreased in the treated plots compared to untreated control. The CB9 cotton cultivar produced significantly higher yield (1.73 t/ha) with a benefit cost ratio 12.47 when seeds were treated with Imidacloprid at 5.5 g/kg fuzzy seed. This study indicated that Imidacloprid (Gaucho 70 WS) used as a seed treatment may be suggested to the cotton growers for controlling sucking pests. Bangladesh J. Agril. Res. 38(1): 61-70, March 2013 DOI: http://dx.doi.org/10.3329/bjar.v38i1.15190

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Mechanoactivation Of Rice Husk Ash In Laboratory Conditions

Promyshlennoe i Grazhdanskoe Stroitel stvo ◽

10.33622/0869-7019.2019.11.20-26 ◽

2019 ◽

pp. 20-26

Keyword(s):

Mechanical Activation ◽

Rice Husk ◽

Amorphous Silica ◽

Silicon Oxide ◽

Rice Husk Ash ◽

Pozzolanic Activity ◽

Maximum Solubility ◽

Laboratory Conditions ◽

Before And After ◽

Mineral Additive

In many rice producing countries of the world, including in Vietnam, various research aimed at using rice husk ash (RHA) as a finely dispersed active mineral additive in cements, concrete and mortars are being conducted. The effect of the duration of the mechanoactivation of the RHA, produced under laboratory conditions in Vietnam, on its pozzolanic activity were investigated in this study. The composition of ash was investigated by laser granulometry and the values of indicators characterizing the dispersion of its particles before and after mechanical activation were established. The content of soluble amorphous silicon oxide in rice husk ash samples was determined by photocolorimetric analysis. The pizzolanic activity of the RHA, fly ash and the silica fume was also compared according to the method of absorption of the solution of the active mineral additive. It is established that the duration of the mechanical activation of rice husk ash by grinding in a vibratory mill is optimal for increasing its pozzolanic activity, since it simultaneously results in the production of the most dispersed ash particles with the highest specific surface area and maximum solubility of the amorphous silica contained in it. Longer grinding does not lead to further reduction in the size of ash particles, which can be explained by their aggregation, and also reduces the solubility of amorphous silica in an aqueous alkaline medium.

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Desalination Technology of Water by using Rice Husk Ash

Basrah Journal of Agricultural Sciences ◽

10.33762/bagrs.2014.111805 ◽

2014 ◽

Vol 27 (2) ◽

pp. 148-160

Author(s):

Hassan K. Hassan ◽

Najla J. Al-Amiri ◽

Mohammed M. Yassen

Keyword(s):

Rice Husk ◽

Rice Husk Ash ◽

Desalination Technology

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Influence of Screw Speed on the Mechanical Properties of Twin-Screw Extruded Rice Husk Flour Recycled Thermoplastic Composites

International Conference on Agricultural, Ecological and Medical Sciences (AEMS-2015) Feb. 10-11, 2015 Penang (Malaysia) ◽

10.15242/iicbe.c0215137 ◽

2015 ◽

Keyword(s):

Mechanical Properties ◽

Rice Husk ◽

Thermoplastic Composites ◽

Screw Speed ◽

Twin Screw ◽

Rice Husk Flour

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DEVELOPMENT AND CHARACTERIZATION OF RICE HUSK-FILLED GLASS FIBER-REINFORCED EPOXY BIOCOMPOSITES

Composites Mechanics Computations Applications An International Journal ◽

10.1615/compmechcomputapplintj.v3.i2.10 ◽

2012 ◽

Vol 3 (2) ◽

pp. 95-106 ◽

Cited By ~ 5

Author(s):

Arun Kumar Rout ◽

Alok Satapathy

Keyword(s):

Glass Fiber ◽

Rice Husk ◽

Fiber Reinforced ◽

Glass Fiber Reinforced

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MATERIAL DEVELOPMENT FROM RICE HUSK FOR CO2 CAPTURE

10.1615/ihmtc-2017.2020 ◽

2018 ◽

Author(s):

Premanath Murge ◽

Srikanta Dinda ◽

Bipin Chakravarthy ◽

Sounak Roy

Keyword(s):

Rice Husk ◽

Co2 Capture ◽

Material Development

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Alternaria and Cercospora Leaf Spot Diseases of Niger (Guizotia abyssinica Cass.) – A Traditional Tribal Crop of South Gujarat, India, with Cost Benefit Ratio in Relation to Different Fungicides

Cercetari Agronomice in Moldova ◽

10.2478/cerce-2018-0027 ◽

2018 ◽

Vol 51 (3) ◽

pp. 89-99

Author(s):

P.B. Sandipan ◽

P.K. Jagtap ◽

M.C. Patel

Keyword(s):

Field Experiment ◽

Seed Yield ◽

Leaf Spot ◽

Foliar Spray ◽

Cost Benefit ◽

Research Station ◽

Guizotia Abyssinica ◽

Cercospora Leaf Spot ◽

Benefit Ratio ◽

Cost Benefit Ratio

Abstract Niger (Guizotia abyssinica Cass.) is an important minor oil seed crop grown in dry areas grown mostly by tribal and interior places as life line of tribal segment. Tribal people mainly use its oil for cooking purpose, above than that there were also other uses. Hence, the niger crop should be protected from the infection. The crop is affected by number of fungal diseases. Therefore, a field experiment was formulated for three years with the four replications at the Niger Research Station (NRS) at Navsari Agricultural University (NAU), Vanarasi, Navsari (Gujarat) on the foliar diseases of GN-1 variety of niger crop. In this experiment, six different fungicides along with one control have been evaluated to control the Alternaria and Cercospora leaf spot diseases, out of which all the fungicidal treatments were significantly superior over the control. Here, foliar spray on the incidence of diseases was compared with the control (without any treatment). All the fungicidal treatments were significantly superior over the control to reduce Alternaria and Cercospora leaf spot diseases of Niger crop. Treatment of Carbendazim + Mancozeb (0.2 %) with two sprays first from the initiation of the disease and second after the interval of 15 days recorded the lowest incidence of Alternaria (14.56) and Cercospora (14.94) leaf spot diseases of niger and recorded the highest seed yield 337 seed yield kg/ha along with the net return with cost benefit ratio graph.

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