The present investigation was carried out at Sugarcane Research Station, Cuddalore on CoC25 sugarcane variety during the period of 2016-2019. This study was conducted to determine the effect of silicon nutrition on physiology, yield and quality of sugarcane under drought condition. Result showed that soil application of silica solublizer @ 12.5 kg + 50 kg FYM/ha + sett treatment with 0.5% K 2 SiO 3 + 2.5% urea and potash foliar spray on 15 days interval from 60 to 150 DAP showed maximum germination percentage, tiller population, leaf area, millable canes, relative water content, silica solubilizing microbial count, total chlorophyll content, nitrate reductase activity, catalase, proline, plant height, number of nodes, internode length, silicon content, carbon content, potassium content, single cane weight, commercial cane sugar per cent, cane yield and sugar yield under drought condition in both plant and ratoon crop.
A field experiment was conducted at Annamalai University experimental farm during Navarai 2000 to screening of rice accessions for yield attributes contributing to salinity tolerance and nutrient uptake. The rice accession of the high yielding and tolerant group recorded a higher value for the yield characters viz. number of productive tillers hill", number of filled grains panicle', straw yield and harvest index. Among the rice accessions of high yielding and tolerant group rice accession no. 12 (IR 60494- 2B-18-3-2-3) recorded the highest value for yield characters with higher value of N, P and K uptake and lower value of Ca, Mg and Na uptake. This rice accession no.12 was not affected by salinity due to salinity tolerance.
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