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University of Agricultural Sciences, Dharwad

The University of Agricultural Sciences, Dharwad was established on October 1, 1986. The University has 5 Colleges, 27 Research Stations, 6 Agriculture Extension Education Centers, 6 Krishi Vigyan Kendras and ATIC. The University has its jurisdiction over 7 districts namely Bagalkot, Belgaum, Bijapur, Dharwad, Gadag, Haveri, and Uttar Kannada in northern Karnataka. Greater diversity exists in soil types, climate, topography cropping and farming situations. The jurisdiction includes dry-farming to heavy rainfall and irrigated area. Important crops of the region include sorghum, cotton, rice, pulses, chilli, sugarcane, groundnut, sunflower, wheat, safflower etc. The region is also known for many horticultural crops. Considerable progress has been registered in the field of education, research and extension from this University.

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Subject: Seed Science and Production Technology × Start date: 2010 × End date: 2017 × Thesis Type: M.Sc × Author: Govinda ×
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    ThesisItemOpen Access
    Studies on Effect of Plant Growth Regulators on Seed Yield, Quality and Storability of Single Cross Maize Hybrid GH-0727
    (University of Agricultural Science, Dharwad, 2016-06) Govinda; Jolli, R.B.
    A field and laboratory experiments were conducted during kharif 2015 to study the influence of growth regulators on field performance, seed quality and storability of maize hybrid GH-0727 at Saidapur unit, Main Agriculture Research Station and at the Seed Quality and Research Laboratory, National Seed Project (NSP), Dharwad respectively. The experiment was laid out in randomized complete block design and replicated thrice with nine treatments viz., Control, GA3 (50 ppm), IBA (100 ppm), GA3 (50 ppm) + IBA (100 ppm), GA3 (75 ppm) + IBA (125 ppm), mepiquat chloride (200 ppm), mepiquat chloride (300 ppm), Salicylic acid (1mM) and (1.5mM). Among the treatments, application of GA3 (50 ppm) + IBA (100 ppm) recorded significantly higher plant height at maturity (203.33 cm ), less number of days to 50 % tasseling (53), silking (57.33) and days to maturity (118). Similarly higher number of seeds per row (29.33), test weight (28.06 g), seed yield per hectare (24.87 q) and shelling percentage (83.66) were recorded. Also significantly higher germination percentage (98.30), root length (22.52 cm), shoot length (12.86 cm) and seedling vigour index (3478) were also recorded. The harvested seeds were stored for six months to study the influence of these treatments on seed quality and storability. Among the treatments application of GA3 (50 ppm) + IBA (100 ppm) recorded significantly higher seed quality parameters followed by GA3 (75 ppm) + IBA (125 ppm) at 1st and 2nd month of storage period. Among containers, seeds stored in HDPE bag (700-800 gauge) maintained satisfactory seed quality as per the minimum seed certification standards up to six months of storage period.