Effect of PGRs on Yield, Quality Parameters and Economics of Linseed (Linum usitatissimum L.) Cultivation under Rainfed Conditions of Nagaland

Author: Tana Yagum, L. Tongpang Longkumer, Noyingthung Kikon, Imlilemla Amlari and Lanunola Tzudir

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Abstract

The use of PGRs (plant growth regulators) has opened new opportunities for enhancing the productivity of several crops under stress conditions and is becoming an integral component for production technology of several agricultural crops. In India a number of research works on PGRs has been conducted on major oilseed crops viz., Soybean, Indian mustard and Groundnut however, very little is known about the role of PGRs in improving yield and yield components of minor oilseed crops like linseed which needs to be addressed given the practical applicability of such technology for linseed cultivation under its current cultivation scenario and increasing global demand. A field experiment was conducted at the experimental farm of School of Agricultural Sciences, Nagaland University, Medziphema campus during the rabi season of 2018-2019. The experiment was laid out in a RBD with three replications with seven PGR treatments viz., IAA @ 1 ppm, IAA @ 2 ppm, GA3 @ 200 ppm, GA3 @ 400 ppm, Salicyclic acid @ 75 ppm, 0.1 % Tebuconazole and IAA @ 1 ppm + GA3 @ 200 ppm along with control (water spray) to study their effect on yield, quality parameters and economics of linseed cultivation under rainfed conditions of Nagaland. Among the PGR treatments IAA @ 2 ppm recorded significantly higher number of capsules plant-1 (53.33) and seed weight plant-1 (3.84 g) as well as significantly highest seed yield of 1244.42 kg ha-1 whereas, the lowest seed yield of 1013.47 kg ha-1, excluding control, was recorded by 0.1 % Tebuconazole. Stover yield was also found to be significantly higher with application of IAA @ 2 ppm (2589.62 kg ha-1) followed by GA3 @ 200 ppm (2548.75 kg ha-1). Application of 0.1 % Tebuconazole was found to record significantly highest oil content of 32% followed by Salicylic Acid @ 75 ppm (30.7 %). The highest oil yield of 352.17 kg ha-1 was recorded by IAA @ 2 ppm followed by GA3 @ 200 ppm (348.04 kg ha-1) and IAA @ 1 ppm (343.94 kg ha-1). The highest cost of cultivation Rs. 29811 ha-1 was incurred with application of GA3 @ 400 ppm whereas, application of IAA @ 2 ppm was found to record the highest gross returns, net returns and BCR of Rs. 49773 ha-1, Rs. 30314 ha-1 and 2.6 respectively followed by application of IAA @ 1 ppm with net returns of Rs. 25970 ha-1 and BCR of 2.3.

Keywords

PGRs, linseed, rainfed, yield, quality parameters, cultivation economics

Conclusion

The present investigation, in line with research work conducted on other oilseed crops, clearly shows that the use of PGRs can have a significant effect on yield attributes, seed and stover yield, oil % and oil yield of linseed under rainfed conditions and can be adopted as a viable low cost technology specially under rainfed conditions. From the findings of the present investigation it can be concluded that application of IAA @ 1ppm and 2 ppm and GA3 at lower dose of 200 ppm were found to enhance both yield attributes and seed, stover and oil yield of linseed whereas, application of 0.1 % Tebuconazole and Salicylic Acid @ 75 ppm was found to enhance the seed oil content %.However, keeping in view economic feasibility of treatments, it is recommended to use IAA @ 2 ppm or 1 ppm for obtaining maximum yield performance as well as BCR from linseed cultivation under rainfed conditions.

References

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How to cite this article

Tana Yagum, L. Tongpang Longkumer, Noyingthung Kikon, Imlilemla Amlari and Lanunola Tzudir (2023). Effect of PGRs on Yield, quality Parameters and Economics of Linseed (Linum usitatissimum L.) Cultivation under Rainfed Conditions of Nagaland. Biological Forum – An International Journal, 15(7): 38-44.