Ashna Susan Joseph - Academia.edu (original) (raw)

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Papers by Ashna Susan Joseph

International Journal of Current Microbiology and Applied Sciences, Sep 10, 2020

Indian Journal of Pure & Applied Biosciences, Aug 30, 2020

A study was conducted in the farm soils of PAJANCOA & RI, Karaikal in order to quantify the d... more A study was conducted in the farm soils of PAJANCOA & RI, Karaikal in order to quantify the distribution of Phosphorus (P) in different pools as well as to study the response of paddy crop to P application. A pot culture experiment was carried out with four types of soils which are differing with their P status namely (i) soils with low levels of both labile and non-labile-P (ii) soils with low levels of labile-P and high levels of non-labile-P (iii) soils with high levels of labile-P and low levels of non-labile-P and (iv) soils with high levels of both labile and nonlabile-P and with four doses of P application namely 0, 50, 100 and 150 kg P2O5 haˉ1. The results indicated that the height of the plant decreased with the application of P in general. However, in soils which registered lower levels of labile and non-labile-P, the addition of P tended to increase the plant height. The number of tillers was found to be the maximum with the application of 100 kg P2O5 haˉ1, though this was significant in soils which recorded high levels of labile-P.

International Journal of Environment and Climate Change

A study was conducted on nutrient management approaches in rice-blackgram cropping system under d... more A study was conducted on nutrient management approaches in rice-blackgram cropping system under different ecosystems. The growth parameters were recorded at 30 DAS, 60 DAS and at harvest of blackgram crop. The results indicated that the plant height and number of branches had increased linearly as the crop attained maturity. The three way interaction of ecosystem, nutritional approaches and N sources (M x N x S) had proved that significantly taller plants of blackgram were associated with the residual effect of transplanted soils which possessed neem coated urea based on SSNM for yield target of 7 t ha-1 (M2N4S2) at all stages of crop growth and number of branches at 60 DAS and at harvest.

International Journal of Current Microbiology and Applied Sciences, 2020

Indian Journal of Pure & Applied Biosciences, 2020

International Journal of Plant & Soil Science

An experiment was conducted on nutrient management approaches using RDF, SSNM, STCR and nutrient ... more An experiment was conducted on nutrient management approaches using RDF, SSNM, STCR and nutrient expert under different rice ecosystem using slow release nitrogen sources viz., neem coated urea and urea supergranules. The initial and final soil N content was analyzed at active tillering, panicle initiation, milking stages and at harvest of direct seeded and transplanted rice. The three-way interaction (M x N x S) proved that a significantly higher value of available N content in soil was noticed in SSNM (6 t ha-1) treated plot with neem coated urea in transplanted rice (M2N3S2) at active tillering stage (245.96 kg ha-1) and at harvest (213.46 kg ha-1), respectively, while application of NCU through SSNM approach (7 t ha-1) in direct seeded rice (M1N4S2) obtained maximum available N content at panicle initiation stage (229.18 kg ha-1) and application of NCU through STCR approach for the yield target of 7 t ha-1 in direct seeded rice (M1N2S2) at milking stage (218.15 kg ha-1).