Application of seed and foliar priming strategies to improve the growth and productivity of late sown wheat (Triticum aestivum L.)

Jatana, B. S. and Ram, H. and Gupta, N. (2020) Application of seed and foliar priming strategies to improve the growth and productivity of late sown wheat (Triticum aestivum L.). CEREAL RESEARCH COMMUNICATIONS, 48 (3). pp. 383-390. ISSN 0133-3720 (print), 1788-9170 (online)

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Abstract

Under north Indian conditions, wheat is sown late in the season due to delayed harvesting of basmati rice and cotton, which limit the productivity of the crop. Various priming strategies might help in improving the growth and productivity of the late sown wheat crop. To test the seed and foliar priming response on the emergence, growth and yield of late sown wheat, two feld experiments were conducted at the research farm of the Punjab Agricultural University, Ludhiana, during 2015–2016 and 2016–2017. Both experiments were conducted in completely randomized block design with 3 treatments in the frst (November 5, November 20 and December 5) and 9 treatments in the second experiment [control, water spray, seed priming (SP), salicylic acid foliar priming (SA: 50, 75 and 100 ppm), combination of SP and SA]. Lower germination was observed in December 5 as compared to November 5 sowing. Seed priming signifcantly improved the emergence and growth of the late sown wheat. Seed priming increased tiller density, dry matter accumulation, leaf area index, normalized diference vegetative index (NDVI) and photosynthetically active radiation interception, number of efective tillers, grain and biomass yield and harvest index as compared to control. Foliar priming recorded signifcantly higher NDVI, proline content, grains ear−1, 1000-grain weight, grain yield and harvest index. Combined priming recorded the highest grain yield and harvest index as compared to seed and foliar priming alone. Wheat can be successfully grown under late sown condition with seed and foliar priming for less yield penalty.

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