Browsing by Author "Alpana Paul"

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Available macro nutrient status and their relationship with soil physico-chemical properties of Sri Ganganagar district of Rajasthan, India
(Journal of Pure and Applied Microbiology, 2015) Ramana; Y.V. Singh; L.K. Jat; Santosh K. Meena; Lakhapati Singh; H.S. Jatav; Alpana Paul
Soil fertility evaluation of an area is an important aspect in context of sustainable agriculture production. The macro nutrients govern the fertility of soils and control the growth and yields of crops. In the present investigation Raisingh Nagar block was selected in the district Sri Ganganagar of Rajasthan and studied the available macronutrient status and their relationship with physico-chemical properties. Sri Ganganagar district have different cropping systems and irrigated by Ganga canal and Bhakhra canal tributaries. Twenty seven representative villages were chosen and four surface soil (0-15 cm) samples collected from each village and analysed for physico-chemical properties and available N, P, K, S, exchangeable Ca and Mg status using standard laboratory procedures. Results of the study indicated that soils of Raisingh Nagar block were low to medium in organic carbon. Out of 108 collected soil samples, 97% were medium in available nitrogen and medium to high in available phosphorus, potassium and sulphur, however, available Ca and Mg found sufficient. © 2015 Journal of Pure and Applied Microbiology. All rights reserved.
Differential responses of rice (Oryza sativa L.) to foliar fertilization of organic potassium salts
(Bellwether Publishing, Ltd., 2020) Arnab Kundu; Priyankar Raha; Akhila Nand Dubey; Mukta Rani; Alpana Paul; Ruby Patel
Citric acid, gluconic acid, and humic acid are effective biostimulants and potassium salts of these organic acids are evidenced to have positive impacts in plant nutrition. This experiment aimed to compare the performances of organic potassium salts, viz. potassium citrate (C), potassium gluconate (G), and potassium humate (H) with commercially available inorganic potassium salt on submerged rice. Treatments included foliar application of three organic potassium salts (C, G, and H) and foliar or soil application of inorganic potassium sulfate (S), alone or in combination, with different doses. Foliar application of organic potassium salts resulted in enhanced plant height (1.6%), chlorophyll content (11.6%), grain yield (6.9%), and nutrient uptake (N, P, K, and S) by rice than inorganic K2SO4. Conjoint application of H (half of RDF-K as foliar spraying) and S (half of RDF-K as soil application) obtained highest straw (22.4 g/kg soil) and grain yield (5.6 g/kg soil). Moreover, potassium humate performed best among the different potassium salts used and significantly enhanced the number of leaves, root biomass, and nutrient uptake. This study confirmed the growth promoting attributes of organic potassium salts by improving yield and nutrient uptake of submerged rice. © 2020 Taylor & Francis Group, LLC.
Effect of biochar on yield and heavy metals uptake in rice grown on soil amended with sewage sludge
(Journal of Pure and Applied Microbiology, 2016) H.S. Jatav; S.K. Singh; Y.V. Singh; Alpana Paul; Vipin Kumar; Preeti Singh; Hemant Jayant
A green house experiment was conducted in the net house of the Department of Soil Science and Agricultural Chemistry, Institute of Agricultural Sciences, Banaras Hindu University, Varanasi (U.P.) during kharif, 2013 to find out the effect of biochar on availability of heavy metals in soil amended with sewage sludge. There were nine treatments, consisting of six different doses of biochar as 2.5, 5.0, 7.5 10, 15, 20 t ha-1 along with 100% RDF and sewage sludge @ 30 t ha-1 applied in each biochar amended pot. In order to recover plant from initial stress, 50% recommended dose of nitrogen (RDN) was applied in each pot at 45 DAT. Results of this study showed a significant increase in test weight, grain and straw yield with application of graded level of biochar along with sewage sludge. Soil pH and electrical conductivity did not show any significant change with application of sewage sludge but with increasing levels of biochar pH of soil showed a significant increase. Application of biochar @ 20 t ha-1 along with sewage sludge (30 t ha-1) was found to increase grain yield to 2.5 times over control (T1) and 8.5 % over 100 % RDF. Application of 20 t biochar along with 30 t sewage sludge ha-1 (T9) registered lowest chromium content in grain. Uptake of Cd, Cr, Ni and Pb was found maximum both in grain and straw with application of 30 t ha-1 of sludge sewage (T3) where as minimum uptake was recorded with conjoint application of 20 t biochar and 30 t sewage sludge ha-1 (T9). © 2016 Journal of Pure and Applied Microbiology. All rights reserved.