Sachin Vaid - Academia.edu (original) (raw)

Papers by Sachin Vaid

Journal of Pharmacy and Nutrition Sciences, 2015

The purpose of this research was to relate mean organoleptic scores of organically and convention... more The purpose of this research was to relate mean organoleptic scores of organically and conventionally grown rice (n = 5) in japonica cultivars (Taikeng No. 16 and Kaohsiung No. 139). The 0-7 organoleptic scale is used in trials to measure the agronomic practices impact on sensory attributes of rice cultivars. However, the precise relationship between farming system and organoleptic analysis of rice remains independent variables. Judges (n = 10) used a common 0-7 scale to report the 6 sensory attributes viz. appearance, aroma, flavor, cohesion, hardness and overall acceptability while keeping cultivar Taikeng No. 9 as control. The scale ranges from – 3 to + 3 as very poor to excellent. The study demonstrates sensory attributes as inherited trait of rice; while no improvement found in cooking and eating quality under seasonal or agronomic variations. Interestingly, the aroma was reported as only better parameter when grown under organic farming compared to conventional farming (– 0.49...

Microbiological Advancements for Higher Altitude Agro-Ecosystems & Sustainability, 2020

Present day Indian agriculture is mainly based on small and marginal land holdings with high leve... more Present day Indian agriculture is mainly based on small and marginal land holdings with high level of dependency on monsoon rains. Since farming is full of uncertainties at every stage, operating such small or marginal land holdings is not at all a profitable venture for farmers and thus the share of agriculture in Indian economy has progressively declined to less than 15%. Population is expanding at an alarming rate and by 2050 it is estimated that India will be home to 1.7 billion people. This population explosion will bring with it increased food and water demand along with urbanization. To feed the mouth of teeming billions in the upcoming years, it is essential to maintain equilibrium in food production and its consumption rates. However, the degrading soil quality of major growing areas of India is a matter of serious concern and if the supply will depend only on yield growth, India will face significant deficit in its agriculture production in the forthcoming years. Increase in area and productivity of crops, diversification towards high value crops as well as uplifting the backwardness in agriculture development are the need of the hour. One such agriculturally underexploited region is the North Eastern Region (NER) of India which is endowed with rich organic soils, plenty of water and favourable climate. Even though the agricultural potential of the region has not been unlocked due to the lack of appropriate technologies/planning, difficult topography, established markets, transport facilities and many more. Thus uplifting the level of agriculture in NER will surely help in reducing the demand-supply gap which would arise in near future and will help in elevating the rural farm incomes (main occupation of livelihood) thereby improving the socio-economic development in the region.

Manuscript History: Three gram negative bacteria (Burkholderia, BC and two Acinetobacter, AB and ... more Manuscript History: Three gram negative bacteria (Burkholderia, BC and two Acinetobacter, AB and AX strains) isolated from a Zn deficient rice-wheat field were tested for Zn solubilization in an in vitro plate assay, culture broth and also for gluconic acid and indole acetic acid (IAA) production. These bacteria were tested alone or in combination on yield attributes, yields and Zn nutrition of two wheat varieties; VL 804 (Zn responsive) and WH 1021 (Zn non- responsive) grown in a Zn deficient soil. Seed inoculation through these bacteria increased mean number of productive tillers (21.1%), number of grains per ear (15.7%), thousand grain weight (10.1%), grain yield (18.1%) and straw yield (3.1%) of both the wheat varieties significantly over the control. Bacterial inoculations especially with AX+AB in WH 1021 and AX or BC+AX in VL 804 resulted in a significant increase in Zn concentrations and its uptake in grains and straw over the control. These bacterial inoculations were also f...

International Journal of Current Microbiology and Applied Sciences, 2018

Israel Journal of Plant Sciences, 2020

Low Zn in staple food grains like rice is closely related to large scale Zn malnutrition in many ... more Low Zn in staple food grains like rice is closely related to large scale Zn malnutrition in many countries of the World. Zinc biofortification of rice grains by some cost effective agronomic method is important for low income farmers. To explore the possibility of enhancing the bioavailability of Zn in rice grains besides higher yields of two cultivars, the combinations of varying Zn fertilizer doses with or without inoculation of rhizobacteria consortium under split plot design set up were evaluated in two years field trials. Microbial inoculation + 5 kg Zn ha-1 to I year rice crop resulted in the highest number of effective tillers, grain yields, Zn concentration and uptake in grains and straw and total Zn uptake in both years. Grain yield of rice during two years increased by 19.7-27.9 and 17.1-20.4 percent over control under treatments receiving microbial inoculation + 5 kg Zn ha-1 to I year rice and 5 kg Zn ha-1 alone to I year rice crop, respectively. The highest concentration...

Israel Journal of Plant Sciences, 2019

Large scale deficiency of Zn results in low crops yields and the problem of Zn malnutrition in hu... more Large scale deficiency of Zn results in low crops yields and the problem of Zn malnutrition in humans and livestock. To economize crop production on Zn deficient soils, two-year field experiments were undertaken with two wheat varieties to evaluate the performance of seed inoculation with a consortium of three bacterial strains in combination with varying doses of Zn fertilizer applied to 1 year rice crop on yields, Zn concentration and Zn uptake of wheat. Seed coating of wheat with bacterial consortium significantly increased grain yields, Zn concentration and uptake in grains and straw and total Zn uptake over the control. It also helped to increase the apparent recoveries of soil applied Zn fertilizer to 1 year rice by succeeding wheat crops and DTPA extractable Zn in soil after 2 year wheat in comparison to the control. Seed inoculation in combination with low dosage of Zn also significantly decreased phytic acid: Zn ratio but increased methionine concentration in wheat grains.

Journal of soil science and plant nutrition, 2014

A comparison study between the isolated indigenous bacteria and chemical Zn fertilizer (ZnSO 4 .7... more A comparison study between the isolated indigenous bacteria and chemical Zn fertilizer (ZnSO 4 .7H 2 O) was conducted to evaluate their potential to augment Zn nutrition of Zn responsive (NDR 359) and Zn non responsive (PD 16) varieties of rice under the green house. Three bacterial strains namely; BC, AX and AB isolated from a Zn-deficient rice-wheat field belonging to the genera Burkholderia and Acinetobacter were investigated for the growth promotion and Zn uptake in rice plants. The plant growth promotory properties such as Zn solubilization and IAA production of the isolates was checked in a previous study. These three isolates when used individually or in combination were found effective in significantly increasing the mean dry matter yield/pot (12.9%), productive tillers/plant (15.1%), number of panicles/plant (13.3%), number of grains/panicle (12.8%), grain yield (17.0%) and straw yield (12.4%) over the control and Zn fertilizer treatment, respectively. Bacterial inoculations also significantly enhanced the total Zn uptake/pot (52.5%) as well as grain methionine concentration (38.8%). Effect of bacterial treatments on the bioavailability of Zn was assessed by estimating the levels of phytic acid in grains. A reduction of nearly 38.4% in phytate: Zn ratio in grains was observed under bacterial inoculations.

International Journal of Agriculture, Environment and Biotechnology, 2013

Two bacterial isolates (B1 and B2), recovered from the rice rhizosphere produced siderophore and ... more Two bacterial isolates (B1 and B2), recovered from the rice rhizosphere produced siderophore and indole acetic acid and solubilized insoluble phosphate, ZnO and ZnSO4.7H2O. Based on routine biochemical tests, both the isolates were characterized as species of Pseudomonas. A shift in pH from 7 to 5 was observed in minimal medium supplemented with Zn compounds after 15 days of bacterial growth. Isolate B1 solubilized maximum amount of ZnO (1.348ppm) after 15 days of incubation. In a pot experiment on wheat (PBW 373), application of bacterial isolates and their consortium with ZnSO4.7H2O @ 5mM significantly enhanced plant height, chlorophyll, grain number per plant over control after 90 days of sowing. Consortium (B1B2) treated wheat plants showed 31% increase in grain Zn over control. HPLC analysis of the root extract of bacterized wheat plants showed the dominance of oxalic, maleic, a-ketoglutaric and fumaric acid. Presence of higher amount of valine and leucine, sugar, protein and phenolic compounds was observed in the root extracts of consortium treated wheat plants than control.

Communications in Soil Science and Plant Analysis, 2017

The quest for plant growth promotory bacteria that can help in sustainable agriculture has increa... more The quest for plant growth promotory bacteria that can help in sustainable agriculture has increased in the recent years owing to increasing cost of fertilizers. In the present study, the potential of three isolated bacteria having plant growth promotory effects in mobilizing the indigenous soil iron (Fe) in two different varieties of wheat was evaluated. Three bacterial isolates belonging to the genera Burkholderia and Acinetobacter were evaluated singly and in combinations for Fe uptake of wheat in a net house study. Results showed that bacterial isolates when used in combination performed better in comparison to their individual use. These isolates significantly increased the mean Fe concentration in grains and straw by 34.0 and 52.4 percent over the uninoculated controls and also increased the total Fe uptake per pot in comparison to A c c e p t e d M a n u s c r i p t 2 uninoculated controls. The bacterial inoculation also showed a positive impact on bioavailability of diethylenetriaminepentaacetic acid (DTPA) extractable Fe in soil.