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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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Subject: Fruit Science × Author: Saini, Poonam × End date: 2023 × Start date: 2020 × Type: Thesis × Thesis Type: Ph.D ×
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    ThesisItemOpen Access
    Studies on nature of fruit drop, yield and quality of Kinnow mandarin
    (Chaudhary Charan Singh Haryana Agricultural University hisar, 2022-12) Saini, Poonam; Rana, G.S
    The experiment entitled “Studies on nature of fruit drop, yield and quality of Kinnow mandarin” was conducted at the experimental orchard, Department of Horticulture, CCS Haryana Agricultural University, Hisar during 2019-20 and 2020-21 to find out the best concentration of foliar application of growth regulators, nutrients and fungicides in improvement of growth, yield, quality and nutrient status of leaves. There were eighteen treatments, i.e., 2,4-D 10 ppm, 2,4-D 15 ppm, GA3 15 ppm, GA3 20 ppm, Urea 1%, Urea 1.5%, Zinc Sulphate 0.5%, Zinc Sulphate 0.75%, Bavistin 1000 ppm and their combinations with three replications by taking one replication per plant on 9-year-old Kinnow plants. The foliar application of growth regulators, nutrients and fungicides treatments and their combinations had significant effect on fruit drop, growth, yield and quality of Kinnow mandarin. Foliar application of 2,4-D 15 ppm + Urea 1.5% + Zinc Sulphate 0.75% + Bavistin 1000 ppm in Kinnow mandarin recorded lower June fruit drop in the order of 13.65% and 15.77% during 2019-20 and 2020-21, respectively and pre-harvest drop in the order of 25.65% and 34.21% during 2019-20 and 2020-21, respectively as compared to control. The growth parameters i.e., plant spread, trunk diameter, leaf area, fruit retention and leaf chlorophyll content were found maximum with foliar application of 2,4-D 15 ppm + Urea 1.5% + Zinc Sulphate 0.75% + Bavistin 1000 ppm. Plant height, fruit length, fruit breadth and fruit weight were effectively improved by foliar application of GA3 20 ppm + Urea 1.5% + Zinc Sulphate 0.75% + Bavistin 1000 ppm. Foliar application of 2,4-D 15 ppm + Urea 1.5% + Zinc Sulphate 0.75% + Bavistin 1000 ppm was significantly improved number of fruits per tree and yield. Kinnow mandarin fruits sprayed with 2,4-D 15 ppm + Urea 1.5% + Zinc Sulphate 0.75% + Bavistin 1000 ppm resulted in 27.42% and 30.64% higher yield during 2019-20 and 2020-21, respectively as compared to control. Kinnow fruit quality in terms of TSS, acidity, TSS/acid ratio, ascorbic acid, juice content, rag content, peel content and peel thickness were significantly affected by foliar application of 2,4-D 15 ppm + Urea 1.5% + Zinc Sulphate 0.75% + Bavistin 1000 ppm. Number of seeds per fruit and seed weight were not significantly affected by foliar application. Maximum leaf N, Zn, S and Fe were recorded with foliar spray of 2,4-D 15 ppm + Urea 1.5% + Zinc Sulphate 0.75% + Bavistin 1000 ppm, however leaf P and K were not significantly affected by foliar application of plant growth regulators, nutrients and fungicides.