Effect of seaweed extract as biostimulant on crop growth and yield in rice (oryza sativa l.) under transplanted condition


Arun MN1*, Mahender Kumar R1 , Sailaja Nori2 , Aarthi Singh1 , Mangal Deep Tuti1, Srinivas D1 , Venkatanna B1 , Surekha K1 , Padmavathi Ch1 and Prasad MS1

1 ICAR-Indian Institute of Rice Research Hyderabad-500030 Telangana, India

2 Sea6 Energy Private Limited Bangalore-560065 Karnataka, India 

*Corresponding author (e – mail: arun_tulasi2011@yahoo.in

Received: 10 October 2019; Accepted: 21 December 2019


Enhancing productivity through integrated nutrient management is pertinent to sustainable intensification of agricultural ecosystems. Field experiments were conducted during kharif and rabi 2016 at the research farm of Indian Institute of Rice Research, Hyderabad, Telangana in a clay loam soil to study the effect of sea weed extract (Liquid Bio-stimulant6, LBS6_S, LBS8, LBS9 and LBS10) with various concentrations on growth, yield of rice under transplanted condition. Positive effects and significant variation was observed on the plant height (98.9 cm) at harvest stage of rice when LBS6_S bio-stimulant (T3 ) was sprayed when compared to other bio-stimulant application while least plant height was recorded with recommended dose of fertilizer (120:60:40 NPK Kg/ha). Grain yield due to seaweed bio-stimulants application varied from 5.31 to 5.58 t/ha and significantly increased over recommended dose of fertilizer alone (T7 ). Per centage increase of grain yield was 4.15 to 9.14 per cent over recommended dose of fertilizer. Hence, bio-stimulant LBS6_S can be applied for improving growth and grain yield of transplanted rice.

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