Rice Yield, Nutrient Uptake and Use Efficiency As Influenced By Nitrogen and Silicon Application

Publication Date : 05/07/2021

DOI : 10.22623/IJAPSA.2021.7006.WEDX8


Author(s) :

Aravinth Kumar.P , M.V. Sriramachandrasekharan , T.Muthukumararaja.


Volume/Issue :
Volume 7
,
Issue 6
(07 - 2021)



Abstract :

The experiment was conducted in two seasons’ kharif and Rabi 2018 in farmer’s field Kuttalam with following treatments. Factor A – Nitrogen levels (0, 50, 100, 150 kg/ha) and Factor B – silicon levels (0, 50, 100, 150 kg/ha). Totally sixteen treatments was imposed in FRBD design with three replications with test crop rice var., ADT 43 and CR1009. Grain and straw yield were recorded at harvest. Grain and straw was analyzed for nitrogen and silicon content and their uptake was computed. Silicon and nitrogen use efficiency were worked out based on yield and uptake. The outcome of the experiment showed that grain and straw increased linearly with nitrogen and silicon levels. The highest grain yield (4983, 5893 kg/ha) and straw yield (6233, 7137kg/ha) was noticed with 150 kg N/ha during kharif and rabi seasons, respectively. Similarly the highest grain yield (5291, 6054 kg ha-1) and straw yield (6520, 7482 kg ha-1) was observed with 150 kg Si /ha during kharif and rabi seasons, respectively. However when nitrogen and silicon applied together, the highest grain yield (5600, 6786 kg ha-1) and straw yield (6811, 8031 kg ha-1) was noticed with 150 kg N / ha + 150 kg Si / ha. However it was comparable with 150 kg N / ha + 100 kg Si / ha and 100 kg N / ha + 150 kg Si / ha. The highest nutrient uptake was recorded with 150 kg N / ha + 150 kg Si / ha. It was comparable with 150 kg N / ha + 100 kg Si / ha. Agronomic efficiency of N and apparent N recovery was maximum at 50 kg N/ha and 150 kg Si/ha. Agronomic efficiency of Si and apparent Si recovery was maximum with 50 kg Si/ha and 150 kg N/ha. Key words: Rice, yield, uptake, NUE, nitrogen, silicon


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