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Chaudhary Charan Singh Haryana Agricultural University, Hisar

Chaudhary Charan Singh Haryana Agricultural University popularly known as HAU, is one of Asia's biggest agricultural universities, located at Hisar in the Indian state of Haryana. It is named after India's seventh Prime Minister, Chaudhary Charan Singh. It is a leader in agricultural research in India and contributed significantly to Green Revolution and White Revolution in India in the 1960s and 70s. It has a very large campus and has several research centres throughout the state. It won the Indian Council of Agricultural Research's Award for the Best Institute in 1997. HAU was initially a campus of Punjab Agricultural University, Ludhiana. After the formation of Haryana in 1966, it became an autonomous institution on February 2, 1970 through a Presidential Ordinance, later ratified as Haryana and Punjab Agricultural Universities Act, 1970, passed by the Lok Sabha on March 29, 1970. A. L. Fletcher, the first Vice-Chancellor of the university, was instrumental in its initial growth.

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Author: Kathwal, Rajesh × Start date: 1990 × Type: Thesis × Thesis Type: Ph.D ×
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    ThesisItemOpen Access
    Effect of plant regulators on growth and yield of wheat (Triticum aestivum L.) under restricted irrigation
    (CCSHAU, Hisar, 2021-10) Kathwal, Rajesh; Thakral, S.K
    A field study was carried out at Rice Research Station, Kaul (Kaithal) in Haryana (India) in wheat to see the effect of plant regulators in growth, yield attributes and yield under the restricted irrigation. There were five plant regulators as thiourea @ 10mM; salicylic acid @ 10μM; gibberellic acid @ 25 ppm; potassium nitrate @ 15 g L-1 and NS (no spray i.e. control) applied at anthesis; 7 days after anthesis and 15 days after anthesis under restricted irrigations The restricted irrigations were I1 i.e. one irrigation applied at 21 days after sowing and I2 were two irrigations i.e. first at 21 DAS and 80 DAS. There were three replications. The experiment was conducted in split-split plot design with three replications. The results revealed that gibberellic acid @ 25 ppm resulted into significantly higher plant height (107.1 cm and 106.6 cm) applied at 15 days after anthesis under two irrigations (first at 21 and second at 80 days after sowing during both the years. The other growth parameters like dry matter and tillers were found significantly higher (186.2 g and 99.0, respectively) when salicylic acid @ 10μM was applied at 15 days after anthesis under two irrigations. Salicylic acid @ 10μM applied at 15 days after anthesis significantly resulted into effective tillers (320.7 m-2), number of seeds per ear head (48.0), grain yield (5225 kg ha-1) and harvest index (40.4%) under two irrigations. The highest gross return (Rs. 106462 ha-1), net return (Rs. 10,749 ha-1) and benefit cost ratio (1.11) was recorded with salcicylic acid applied at 15 days after anthesis under two irrigation with lowest total cost (Rs.95713 ha-1) comparable to control treatment i.e. no spray (Rs. 95711 ha-1). Two irrigations in wheat at 21 and 80 days after sowing resulted into significantly higher gross returns (Rs. 106594 ha-1), net returns (Rs. 9708 ha-1) and highest benefit cost ratio (1.10). Based on the above observation it can be said that restricted irrigation management with two irrigations first at 21 days after sowing and second at 80 days after sowing along with the plant regulator salicylic acid at 10M applied at 15 days after sowing resulted into higher growth characters, improved physiological parameters like relative water content and chlorophyll content. This same treatment enhanced the yield attributes like effective tillers, 1000 grain weight, grains per ear head and thereby increased the grain yield and biological yield improving the harvest index. The quality was also enhanced by salicylic acid in terms of protein, N, P, K content, N, P, K uptake by grain and straw. Salicylic acid resulted into higher gross returns, lowest total cost and highest net returns along with the higher BC ratio.