Evaluation of impact of foliar sprays of potassium nitrate (KNO3) on yield and economics of Bt cotton (Gossypium hirsutum) through front line demonstrations

AMARJEET AMARJEET; K S AHLAWAT; ATTAR SINGH; SATISH KUMAR MEHTA; BIKRAM SINGH

doi:10.56093/ijas.v88i2.79197

Authors

AMARJEET AMARJEET Assistant Scientist, Agronomy, CCSHAU, Regional Research Station, Bawal, Haryana 123 501
K S AHLAWAT Assistant Scientist, Department of Forestry, CCSHAU, Regional Research Station, Bawal, Haryana 123 501
ATTAR SINGH Senior Coordinator, Krishi Vigyan Kendra, Bhiwani 127 021
SATISH KUMAR MEHTA Assistant Scientist, Department of Plant Pathology, CCSHAU, Hisar 125 004
BIKRAM SINGH Principal Scientist, CCSHAU, Regional Research Station, Bawal 123 501

https://doi.org/10.56093/ijas.v88i2.79197

Keywords:

Bt Cotton, Potassium nitrate, Profitability, Technology gap, Yield

Abstract

Cotton is one of the most important commercial fibre crops of India. Imbalance and inadequate nutrition is one of the major constraints for low productivity of cotton. Superimposition of KNO3 (1%) over recommended dose of fertilizers through foliar applications at flowering and boll development stage is recommended in Haryana state to overcome K deficiency at later stages of crop growth and farmers are not practicing this technology due to lack of knowledge. Therefore, to highlight the impact of three foliar sprays of KNO₃ (1%) at 15 days interval starting from flower initiation stage, forty one Front Line Demonstrations were conducted at farmer's field on 16.4 ha of land area of 20 villages of Bhiwani district (Haryana) during kharif seasons of 2010 to 2012. The improved technology recorded a mean cotton seed yield of 24.67 q/ha which was 10.8% higher than that obtained with farmers practice/ check, i.e. no spray of KNO₃ (22.27 q/ha). It fetched higher mean net monetary returns of Rupees 55053/ha with benefit: cost ratio of 2.03 in comparison to check (mean net monetary returns of Rupees 47079/ha and benefit: cost ratio of 1.91).

Downloads

Download data is not yet available.

References

Basavanneppa M A, Aladakatti Y R, Biradar D P and Nidagundi J M. 2009. Response of Bt cotton to foliar nutrition under irrigated condition. (In) Proceedings of the National Symposium on Bt-Cotton: Opportunities and Prospects, 17-19 November, 2009, UAS, Dharwad, p 73.

Brar M S, Gill M S, Sekhon K S, Sidhu B S, Sharma P and Singh A. 2008. Effect of soil and foliar application of nutrients on yield and nutrient concentration in Bt Cotton. Journal of Research, Punjab Agricultural University 45: 126–31.

Channakeshava S, Goroji P T, Doreswamy C and Naresh N T. 2013. Assessment of foliar spray of potassium nitrate on growth and yield of cotton. Karnataka Journal of Agricultural Sciences 26(2): 316–7.

Ebelhar M W and Ware J O. 1998. Summary of cotton yield response to foliar applications of potassium nitrate and Urea. (In) Proceedings of 1998 Beltwide Cotton Production Research Conference, National Cotton Council of America, Memphis, pp 683-87.

Egilla J N, Davies F T Jr. and Drew M C. 2001. Effect of potassium on drought resistance of Hibiscus rosa-sinensis cv. Leprechaun: Plant growth, leaf macro and micronutrient content and root longevity. Plant and Soil 229(2): 213–4. DOI: https://doi.org/10.1023/A:1004883032383

El-Hadi A H A, Ismail K M and El-Akabawy M A. 1997. Effect of potassium on the drought resistance of crops in egyptian conditions. (In) Proceedings of Regional Workshop of IPI, held at Bornova, Izmir, Turkey. IPI, Basel, pp 328-36.

Hosmath J A, Biradar D P, Patil V C, Palled Y B and Malligawad L H. 2014. Nutrient requirement of Bt. cotton (Gossypium hirsutum). Indian Journal of Agronomy 59(1): 133–8.

Kaur P, Buttar G S, Kaur M, Gill M S and Sohu R S. 2011. Effect of foliar and split application of potassium on seed cotton yield and fibre quality of american cotton (Gossypium hirsutum). Indian Journal of Agricultural Sciences 81(9): 838–42.

Marschner H. 1995. Mineral Nutrition of Higher Plants, 2nd Ed. Academic Press, San Diego, California, USA.

Oosterhuis D M. 1995. Potassium nutrition of cotton with emphasis on foliar fertilization. (In) Challenging the Future. Proceedings World Cotton Research Conference, CSIRO, pp 133–46

Samant T K. 2015. Impact of front line demonstrations on yield and economics of hybrid rice (Rajalaxmi). Indian Journal of Agricultural Research 49(1): 88–91. DOI: https://doi.org/10.5958/0976-058X.2015.00013.X

Samui S K, Maitra S, Roy D K, Mondal A K and Saha D. 2000. Evaluation on front line demonstration on groundnut (Arachis hypogaea L.). Journal of Indian Society Coastal Agricultural Research 18: 180–3.

Sekhon N K and Singh C B. 2013. Plant nutrient status during boll development and seed cotton yield as affected by foliar application of different sources of potassium. American Journal of Plant Sciences 4: 1409–17. DOI: https://doi.org/10.4236/ajps.2013.47172

Sharma K D, Nandwal A S and Kuhad M S.1996. Potassium effects on CO2 exchange, ARA and yield of clusterbean cultivars under water stress. Journal of Potassium Research 12: 412–3.

Waraich E A, Ahmad R, Hur R G M, Ehsanullah, Ahmad A and Mahmood N. 2011. Response of foliar application of KNO3 on yield, yield components and lint quality of cotton (Gossypium hirsutum L.). African Journal of Agricultural Research 6(24): 5457–63.

Weir B L, Kerby T A, Hake K D, Roberts B A and Zelinski L J. 1996. Cotton Fertility. (In) Cotton Production Manual, pp 210-27. Hake S J, Kerby T A and Hake K D (Eds). Division of Agricultural and Natural Resource, University of California, Oakland.