Raja Rajan - Academia.edu (original) (raw)

Papers by Raja Rajan

Research paper thumbnail of Genome-Wide Association to Identify the Genetic loci Associated with Various Agro-Economical Traits in Mungbean (Vigna radiata L. Wilczek)

International Journal of Environment and Climate Change, Mar 8, 2024

Research paper thumbnail of Role of Zinc and Boron Nutrition on Yield and Quality of Winter Irrigated Hybrid Cotton

Trends in Biosciences, 2014

ABSTRACT Field experiment was conducted during the winter season in sandy clay loam (Ultic Haplus... more ABSTRACT Field experiment was conducted during the winter season in sandy clay loam (Ultic Haplustalf) soil with the cotton hybrid at Coimbatore, Tamil Nadu, India to find out the effect of Zinc and boron nutrition on yield and quality of hybrid cotton in a Randomized Block design. Results showed that the shoot, root and total dry matter production at all growth stages were high with the recommended dose of NPK plus ZnSO4 @ 25 kg ha-1 as soil application plus foliar spray of B @ 0.3 kg ha-1 twice during squaring and early boll formation stages. Application of recommended dose of NPK + Zn along with two foliar sprays of B produced 76 and 36 per cent higher yield over control and recommended NPK treatments respectively. Further B spray along with the recommended dose of NPK application produced 672 and 152 kg higher yield over control and NPK alone applied treatments respectively. Similarly, the combined application of NPK +Zn +B and 25 per cent N through organic + 75 per cent through inorganic sources influence the span length favorably. The combined application of NPK with ZnSO4 @ 25 kg ha-1 plus foliar spray of B @ 0.3 kg ha-1 twice during squaring and early boll formation stages recorded higher lint index. This study revealed the prospects of enhancing productivity of hybrid cotton by the combined application of NPK along with Zn and B nutrition. Also the combined application of organic and inorganic sources of N in the ratio of 25:75 had favorable influence on yield and lint quality.

Research paper thumbnail of Retention and Movement of Applied Zn in Rice Soils

Zenodo (CERN European Organization for Nuclear Research), Dec 1, 1993

Research paper thumbnail of Fundamentals of Soil Science

Soil is a finite resource and its loss and degradation is not recoverable within a human lifespan... more Soil is a finite resource and its loss and degradation is not recoverable within a human lifespan. Soils affect the food we eat, the water we drink, the air we breathe and our overall health and the health of all organisms on the planet. Without healthy soils, we would not be able to grow our food, or meet our fibre and fodder requirements. It is estimated that 95 per cent of our food is directly or indirectly produced on our soils. The book provides the basic understanding of the soil, its nature, properties and functions. It has been attempted to present in a logical sequence all basic information about soils, from the definition of soil to how they are formed, the factors and processes governing their formation, their intrinsic properties, classification, functions, and the role they play in the global environment today and for a sustainable tomorrow. Emphasis on soil quality and soil health care has been laid as it is the order of the day. The 32 chapters of the book will provide a wealth of information for those looking to take their first deep dive into the realm of soils.

Research paper thumbnail of Microstructure and mechanical properties of spark plasma-sintered La2O3 dispersion-strengthened W–Ni–Fe alloy

Research paper thumbnail of Availability and uptake of phosphorus from organic manures in groundnut (Arachis hypogea L.)–corn (Zea mays L.) sequence using radio tracer technique

Research paper thumbnail of A simple method for purification of deodorizer distillate from Indian rice (Oryza Sativa) bran oil and preparation of phytosterols

Grasas Y Aceites, Oct 14, 2014

Research paper thumbnail of Tocopherols and phytosterols content of coconut oil blends prepared for coconut oil consumers and non-coconut oil consumers

Indian Coconut Journal, 2010

... Vol. No. v. 73(4) p. 16-20. AGRIS 2011 - FAO of the United Nations. Related AGRIS Results: -,... more ... Vol. No. v. 73(4) p. 16-20. AGRIS 2011 - FAO of the United Nations. Related AGRIS Results: -, Storage stability of packed coconut oil blends with other vegetable oils by Prasanth Kumar, PK; Bhatnagar, AS; Indira, TN; Indiramma, AR; Gopala Krishna, AG (Jun 2010) in English. ...

Research paper thumbnail of A Study on Scalable High- Performance Virus

Research paper thumbnail of Investigations Into Tensile Strength of Banana Fibre Reinforced Hybrid Polymer Matrix Composites

Engineering review, Jan 27, 2016

Research paper thumbnail of Processing of commercial rice bran for the production of fat and nutraceutical rich rice brokens, rice germ and pure bran

Lebensmittel-Wissenschaft & Technologie, Sep 1, 2014

Research paper thumbnail of RELATIVE UTILISATION OF DIFFERENT ZINC CARRIERS IN WETLAND RICE (Oryza sativa)

Madras Agricultural Journal

The utilisation of fertiliser zinc by rice crop was studied using few 65 Zn-labelled zinc carrier... more The utilisation of fertiliser zinc by rice crop was studied using few 65 Zn-labelled zinc carriers in a greenhouse experiment on an Udic Haplustalf and an Entic Chromustert. With respect to the yield of grain and straw, ZnSO4 was found to be the best among the zinc carriers tried. Its effect was more pronounced when applied along with ammonium polyphosphate, However, the per cent zinc utilisation followed the order:-Zincated urea > ZnsO4> ZnSO4+APP > Zincated DAP.

Research paper thumbnail of Effect of Fertilizer NPK and FYM on Yield of Cotton and Nutrient Status in Black Soil

Madras Agricultural Journal

A field experiment was conducted to study the effect of N, P and K fertilization with FYM in cott... more A field experiment was conducted to study the effect of N, P and K fertilization with FYM in cotton (var KC 2) at Agricultural Research Station, Tamil Nadu Agricultural University, Kovilpatti. The treatments included two levels of FYM (0 and 5 t ha') with five combinations of NPK viz. recommended levels of N, P and K (80, 40 and 40 kg N, PO, and KO ha', respectively) (T); NPK (T); NPK (T); NPKo (T); NPK (T) and were replicated thrice in randomized block design. The results showed that the different combinations of treatments and FYM tried did not have significant effect on the seed cotton yield. The recommended level of fertilizer nutrients application recorded significantly highest seed cotton yield. The omission of P application did not affect the seed cotton yield. However the omission of N and K significantly reduced the seed cotton yield. The FYM application had effect only on the N uptake and the nutrients taken up by the crop at square forming stage had significant an...

Research paper thumbnail of Overview of Enabling Works for Waterfront Structures—Design and Construction

Lecture notes in civil engineering, 2023

Research paper thumbnail of Assessment of Soil organic carbon stocks in Dendrocalamus stocksii and Dendrocalamus strictus plantations in three different agroclimatic zones

Research paper thumbnail of Formula

Research paper thumbnail of Radiotracer Studies on the Interaction of Phosphorus with Zinc in Okra Using Double Tagging Technique

A pot experiment was conducted using P tracer technique at the Radioisotope Laboratory, Tamil Nad... more A pot experiment was conducted using P tracer technique at the Radioisotope Laboratory, Tamil Nadu Agricultural University, Coimbatore, during 2013-2014 to study the yield response of okra to P fertilization and its interaction with Zn. To study the fertilizer Zn use efficiency under varying levels of P, double tagging technique was employed using 65 Zn and 32 P as radiotracers. The treatments included four levels of P (0, 50, 100 and 150 kg P2O5 ha -1 applied as 32 P labeled single superphosphate) and two levels of FYM (0 and 25 t ha -1 ), replicated thrice in a completely randomized design. Zinc sulphate, labeled with 65 Zn, was applied as common application to the all pots @ 25 kg ZnSO4 ha -1 . Initial and postharvest soil analysis and plant analysis for P 32 activity, 65 Zn activity and nutrients content were carried out. Application of P at different levels significantly and positively increased the dry matter yields of both fruit and shoot of okra, up to the P application leve...

Research paper thumbnail of An Improved CSI with the Use of Hybrid PWM and Passive Resonant

A hybrid pulse width modulation(PWM) scheme that combines the advantages of unipolar switching sc... more A hybrid pulse width modulation(PWM) scheme that combines the advantages of unipolar switching scheme (USS) and bipolar switching scheme (BSS) for a grid-connected current source inverter is presented. The former switching scheme has the advantage of low switching loss while the latter one has the advantage of less total harmonic distortion(THD). The inverter bridge is predominantly operated under USS over a line cycle, within which only one switch is switched at high frequency. It is momentarily operated in BSS ar ound the zero-crossing region of the line vol tage, within which two switches are switched at high frequency. To further reduce the switching loss, the concept of passive r sonant snubber is applied to the high-frequency switches in the inverter. The circ uit is simulated using MATLAB simu-link. The proposed control scheme is also to be implemented for a 60V, 50Hz, 360W inverter.

Research paper thumbnail of Comparative Study on the Efficiency of Various Binder Combinations for Metformin Tablets

Research & Reviews: Journal of Pharmacy and Pharmaceutical Sciences, 2013

Metformin hydrochloride is widely used as an oral anti hypoglycemic agent. But it is difficult to... more Metformin hydrochloride is widely used as an oral anti hypoglycemic agent. But it is difficult to formulate by direct compression method because of its poor compaction properties and its crystalline nature. The present study target for a better combination of binders that produces metformin tablets with unique results. The granulation is done using binder combination of gelatin, PVP K 30, HPMC, Cross Povidone, starch and Kyron-T 314. The wet granulation method is selected for the formulation of metformin tablets and the formulated tablets were evaluated for their hardness, friability, disintegration, content uniformity and dissolution profiles with USP type II apparatus at 100 rpm in pH 6.8 phosphate buffer solution. The Formulation F2 (containing gelatin and HPMC as binders) demonstrated unique results than the other formulations. The formulation F5 (containing gelatin and Kyron-T 314 as binders) shows faster disintegration than the other formulations but shows least hardness.

Research paper thumbnail of AGRIEAST 2010 ( 9 ) PIs Direct and residual effects of phosphorus from organic manures and single super phosphate on microbial population and biomass carbon content in groundnut-sunflower cropping system

polculltrre experituenls ttere conducled using cliJJ'erent phosphorus sources at Tamil Nacltt... more polculltrre experituenls ttere conducled using cliJJ'erent phosphorus sources at Tamil Nacltt Agrictiltttrol (Jniversity:Coimbutore, cluring 2007 2008. to inprove organic carbon content ancl ti maintain a bel,er nticrobiul populati<ut in grotntlnttt (Aruc'his hypogttca L) sunflower (Helianthus annuus L) cropping system. Fotl'orgonic 'sotrrces (Ltrntyarcl tnanurc, poultry manure' vernicompost aurl srwage-rludgu) evctlualecl iu conrpurisott tvith lhe stundctrd inorganic source o.f single asis @ 31 kg P,O, hctl. The six treatments, including cr in a completely randomized design' The ntain crop oJ residttal crop of sunflower Go a) Post-harvest sctil tncl urnflrnrer. Organic monures increased lhe organic cctrbon co,len!, biotttcr.s,s cnrbon c,ottlutl urtcl tnicrobiul populution. Poultry manure significantly ittc.reusecl the nticrobittl populatiort untl biontu.s,s cctrbon conlanl in main and residual cropping thttn.s.itrgle sypper phosphote Hotyever, the nticrob...

Research paper thumbnail of Genome-Wide Association to Identify the Genetic loci Associated with Various Agro-Economical Traits in Mungbean (Vigna radiata L. Wilczek)

International Journal of Environment and Climate Change, Mar 8, 2024

Research paper thumbnail of Role of Zinc and Boron Nutrition on Yield and Quality of Winter Irrigated Hybrid Cotton

Trends in Biosciences, 2014

ABSTRACT Field experiment was conducted during the winter season in sandy clay loam (Ultic Haplus... more ABSTRACT Field experiment was conducted during the winter season in sandy clay loam (Ultic Haplustalf) soil with the cotton hybrid at Coimbatore, Tamil Nadu, India to find out the effect of Zinc and boron nutrition on yield and quality of hybrid cotton in a Randomized Block design. Results showed that the shoot, root and total dry matter production at all growth stages were high with the recommended dose of NPK plus ZnSO4 @ 25 kg ha-1 as soil application plus foliar spray of B @ 0.3 kg ha-1 twice during squaring and early boll formation stages. Application of recommended dose of NPK + Zn along with two foliar sprays of B produced 76 and 36 per cent higher yield over control and recommended NPK treatments respectively. Further B spray along with the recommended dose of NPK application produced 672 and 152 kg higher yield over control and NPK alone applied treatments respectively. Similarly, the combined application of NPK +Zn +B and 25 per cent N through organic + 75 per cent through inorganic sources influence the span length favorably. The combined application of NPK with ZnSO4 @ 25 kg ha-1 plus foliar spray of B @ 0.3 kg ha-1 twice during squaring and early boll formation stages recorded higher lint index. This study revealed the prospects of enhancing productivity of hybrid cotton by the combined application of NPK along with Zn and B nutrition. Also the combined application of organic and inorganic sources of N in the ratio of 25:75 had favorable influence on yield and lint quality.

Research paper thumbnail of Retention and Movement of Applied Zn in Rice Soils

Zenodo (CERN European Organization for Nuclear Research), Dec 1, 1993

Research paper thumbnail of Fundamentals of Soil Science

Soil is a finite resource and its loss and degradation is not recoverable within a human lifespan... more Soil is a finite resource and its loss and degradation is not recoverable within a human lifespan. Soils affect the food we eat, the water we drink, the air we breathe and our overall health and the health of all organisms on the planet. Without healthy soils, we would not be able to grow our food, or meet our fibre and fodder requirements. It is estimated that 95 per cent of our food is directly or indirectly produced on our soils. The book provides the basic understanding of the soil, its nature, properties and functions. It has been attempted to present in a logical sequence all basic information about soils, from the definition of soil to how they are formed, the factors and processes governing their formation, their intrinsic properties, classification, functions, and the role they play in the global environment today and for a sustainable tomorrow. Emphasis on soil quality and soil health care has been laid as it is the order of the day. The 32 chapters of the book will provide a wealth of information for those looking to take their first deep dive into the realm of soils.

Research paper thumbnail of Microstructure and mechanical properties of spark plasma-sintered La2O3 dispersion-strengthened W–Ni–Fe alloy

Research paper thumbnail of Availability and uptake of phosphorus from organic manures in groundnut (Arachis hypogea L.)–corn (Zea mays L.) sequence using radio tracer technique

Research paper thumbnail of A simple method for purification of deodorizer distillate from Indian rice (Oryza Sativa) bran oil and preparation of phytosterols

Grasas Y Aceites, Oct 14, 2014

Research paper thumbnail of Tocopherols and phytosterols content of coconut oil blends prepared for coconut oil consumers and non-coconut oil consumers

Indian Coconut Journal, 2010

... Vol. No. v. 73(4) p. 16-20. AGRIS 2011 - FAO of the United Nations. Related AGRIS Results: -,... more ... Vol. No. v. 73(4) p. 16-20. AGRIS 2011 - FAO of the United Nations. Related AGRIS Results: -, Storage stability of packed coconut oil blends with other vegetable oils by Prasanth Kumar, PK; Bhatnagar, AS; Indira, TN; Indiramma, AR; Gopala Krishna, AG (Jun 2010) in English. ...

Research paper thumbnail of A Study on Scalable High- Performance Virus

Research paper thumbnail of Investigations Into Tensile Strength of Banana Fibre Reinforced Hybrid Polymer Matrix Composites

Engineering review, Jan 27, 2016

Research paper thumbnail of Processing of commercial rice bran for the production of fat and nutraceutical rich rice brokens, rice germ and pure bran

Lebensmittel-Wissenschaft & Technologie, Sep 1, 2014

Research paper thumbnail of RELATIVE UTILISATION OF DIFFERENT ZINC CARRIERS IN WETLAND RICE (Oryza sativa)

Madras Agricultural Journal

The utilisation of fertiliser zinc by rice crop was studied using few 65 Zn-labelled zinc carrier... more The utilisation of fertiliser zinc by rice crop was studied using few 65 Zn-labelled zinc carriers in a greenhouse experiment on an Udic Haplustalf and an Entic Chromustert. With respect to the yield of grain and straw, ZnSO4 was found to be the best among the zinc carriers tried. Its effect was more pronounced when applied along with ammonium polyphosphate, However, the per cent zinc utilisation followed the order:-Zincated urea > ZnsO4> ZnSO4+APP > Zincated DAP.

Research paper thumbnail of Effect of Fertilizer NPK and FYM on Yield of Cotton and Nutrient Status in Black Soil

Madras Agricultural Journal

A field experiment was conducted to study the effect of N, P and K fertilization with FYM in cott... more A field experiment was conducted to study the effect of N, P and K fertilization with FYM in cotton (var KC 2) at Agricultural Research Station, Tamil Nadu Agricultural University, Kovilpatti. The treatments included two levels of FYM (0 and 5 t ha') with five combinations of NPK viz. recommended levels of N, P and K (80, 40 and 40 kg N, PO, and KO ha', respectively) (T); NPK (T); NPK (T); NPKo (T); NPK (T) and were replicated thrice in randomized block design. The results showed that the different combinations of treatments and FYM tried did not have significant effect on the seed cotton yield. The recommended level of fertilizer nutrients application recorded significantly highest seed cotton yield. The omission of P application did not affect the seed cotton yield. However the omission of N and K significantly reduced the seed cotton yield. The FYM application had effect only on the N uptake and the nutrients taken up by the crop at square forming stage had significant an...

Research paper thumbnail of Overview of Enabling Works for Waterfront Structures—Design and Construction

Lecture notes in civil engineering, 2023

Research paper thumbnail of Assessment of Soil organic carbon stocks in Dendrocalamus stocksii and Dendrocalamus strictus plantations in three different agroclimatic zones

Research paper thumbnail of Formula

Research paper thumbnail of Radiotracer Studies on the Interaction of Phosphorus with Zinc in Okra Using Double Tagging Technique

A pot experiment was conducted using P tracer technique at the Radioisotope Laboratory, Tamil Nad... more A pot experiment was conducted using P tracer technique at the Radioisotope Laboratory, Tamil Nadu Agricultural University, Coimbatore, during 2013-2014 to study the yield response of okra to P fertilization and its interaction with Zn. To study the fertilizer Zn use efficiency under varying levels of P, double tagging technique was employed using 65 Zn and 32 P as radiotracers. The treatments included four levels of P (0, 50, 100 and 150 kg P2O5 ha -1 applied as 32 P labeled single superphosphate) and two levels of FYM (0 and 25 t ha -1 ), replicated thrice in a completely randomized design. Zinc sulphate, labeled with 65 Zn, was applied as common application to the all pots @ 25 kg ZnSO4 ha -1 . Initial and postharvest soil analysis and plant analysis for P 32 activity, 65 Zn activity and nutrients content were carried out. Application of P at different levels significantly and positively increased the dry matter yields of both fruit and shoot of okra, up to the P application leve...

Research paper thumbnail of An Improved CSI with the Use of Hybrid PWM and Passive Resonant

A hybrid pulse width modulation(PWM) scheme that combines the advantages of unipolar switching sc... more A hybrid pulse width modulation(PWM) scheme that combines the advantages of unipolar switching scheme (USS) and bipolar switching scheme (BSS) for a grid-connected current source inverter is presented. The former switching scheme has the advantage of low switching loss while the latter one has the advantage of less total harmonic distortion(THD). The inverter bridge is predominantly operated under USS over a line cycle, within which only one switch is switched at high frequency. It is momentarily operated in BSS ar ound the zero-crossing region of the line vol tage, within which two switches are switched at high frequency. To further reduce the switching loss, the concept of passive r sonant snubber is applied to the high-frequency switches in the inverter. The circ uit is simulated using MATLAB simu-link. The proposed control scheme is also to be implemented for a 60V, 50Hz, 360W inverter.

Research paper thumbnail of Comparative Study on the Efficiency of Various Binder Combinations for Metformin Tablets

Research & Reviews: Journal of Pharmacy and Pharmaceutical Sciences, 2013

Metformin hydrochloride is widely used as an oral anti hypoglycemic agent. But it is difficult to... more Metformin hydrochloride is widely used as an oral anti hypoglycemic agent. But it is difficult to formulate by direct compression method because of its poor compaction properties and its crystalline nature. The present study target for a better combination of binders that produces metformin tablets with unique results. The granulation is done using binder combination of gelatin, PVP K 30, HPMC, Cross Povidone, starch and Kyron-T 314. The wet granulation method is selected for the formulation of metformin tablets and the formulated tablets were evaluated for their hardness, friability, disintegration, content uniformity and dissolution profiles with USP type II apparatus at 100 rpm in pH 6.8 phosphate buffer solution. The Formulation F2 (containing gelatin and HPMC as binders) demonstrated unique results than the other formulations. The formulation F5 (containing gelatin and Kyron-T 314 as binders) shows faster disintegration than the other formulations but shows least hardness.

Research paper thumbnail of AGRIEAST 2010 ( 9 ) PIs Direct and residual effects of phosphorus from organic manures and single super phosphate on microbial population and biomass carbon content in groundnut-sunflower cropping system

polculltrre experituenls ttere conducled using cliJJ'erent phosphorus sources at Tamil Nacltt... more polculltrre experituenls ttere conducled using cliJJ'erent phosphorus sources at Tamil Nacltt Agrictiltttrol (Jniversity:Coimbutore, cluring 2007 2008. to inprove organic carbon content ancl ti maintain a bel,er nticrobiul populati<ut in grotntlnttt (Aruc'his hypogttca L) sunflower (Helianthus annuus L) cropping system. Fotl'orgonic 'sotrrces (Ltrntyarcl tnanurc, poultry manure' vernicompost aurl srwage-rludgu) evctlualecl iu conrpurisott tvith lhe stundctrd inorganic source o.f single asis @ 31 kg P,O, hctl. The six treatments, including cr in a completely randomized design' The ntain crop oJ residttal crop of sunflower Go a) Post-harvest sctil tncl urnflrnrer. Organic monures increased lhe organic cctrbon co,len!, biotttcr.s,s cnrbon c,ottlutl urtcl tnicrobiul populution. Poultry manure significantly ittc.reusecl the nticrobittl populatiort untl biontu.s,s cctrbon conlanl in main and residual cropping thttn.s.itrgle sypper phosphote Hotyever, the nticrob...