Thumbnail Image

Agriculture University, Jodhpur

Agriculture University, Jodhpur was established on 14th September, 2013 by Government of Rajasthan under Agriculture University, Jodhpur Act 21 of 2013 to focus on holistic development of arid and semi-arid regions of the state covering 6 districts (Jodhpur, Barmer, Nagaur, Pali, Jalore and Sirohi), constituting 28% of total geographical area which is sustaining 20.8% human and 28.4% animal population of the state. The districts under jurisdiction of the university cover 3 agro-ecological zones of the state. These are Arid Western Plain Zone Ia (Jodhpur and Barmer districts), Transitional plain of Luni Basin Zone IIb (Jalore, Pali, and Sirohi districts) and part of Transitional Plain of Inland Drainage Zone IIa (Nagaur district). The university has 1 institute of diploma and 3 colleges to produce highly competent educated human resources in agriculture and allied sciences besides 2 agricultural research stations, one each in zone Ia & IIb and 3 agricultural research sub stations, one in each zone to prepare, plan and perform highly need based research in this acute water scarce but naturally rich bio-diversified zone of the country. The third most important part in tri-pillar (Teaching, Research & Extension) of agricultural development, the extension for transfer of technologies are reached to doorsteps of the farming community by 6 Krishi Vigyan Kendras (K-V-Ks), 2 in Nagaur district and 1 each in Jodhpur, Barmer, Jalore & Sirohi districts under the umbrella of the university. The different units of teaching, research and extension are coordinating to systematically run by the headquarter situated at Mandor, Jodhpur.

Browse

20231
Reset filters
Author: Jat, Asha × Thesis Type: Ph.D ×
Reset filters

Search Results

Now showing 1 - 1 of 1
  • Thumbnail Image
    ThesisItemOpen Access
    Effect of Water Regimes, Land Configurations and Mulching on Growth, Yield and Quality of Onion (Allium cepa L.)
    (Agriculture University, Jodhpur, 2023-09-25) Jat, Asha; Moond, S.K.
    The present experiment entitled “Effect of Water Regimes, Land Configurations and Mulching on Growth, Yield and Quality of Onion (Allium cepa L.)” was conducted at Instructional farm, College of Agriculture, Jodhpur during rabi season of 2020-2021 and 2021-2022. The experiment had 24 treatments in Split-Split Plot Design including three factors i.e., A) one main factor: water regime having three levels (I1 - 1.0 IW/CPE, I2 - 0.8 IW/CPE and I3 - 0.6 IW/CPE) and two sub factors B) land configuration having two levels (B1 - flat bed and B2 - raised bed) and C) mulching having four levels (M1 - no mulch, M2 - black mulch, M3 - silver-black mulch and M4 - white-black mulch). The 0.8 IW/CPE water regime substantially enhanced growth, yield and quality attributes of onion viz., plant height (50.26 cm), leaf length (45.01 cm), leaf diameter (18.93 mm), neck length (5.25 cm), number of leaves per plant (13.32), neck diameter (21.28 mm), time taken to maturity (114.77 days), bolting (1.68%), leaf chlorophyll content (19.25 µg/100g), leaf N content (173.68 mg/100g), leaf P content (42.09 mg/100g), leaf K content (224.54 mg/100g), leaf S content (0.44%), weight of fresh bulb (80.75 g), weight of cured bulb (72.15 g), polar diameter of bulb (5.32 cm), equatorial diameter of bulb (5.99 cm), number of bulb scales (11.49), thickness of bulb scale (2.58 mm), bulb yield (33.37 t/ha), dry matter content (17.35%), double bulb (1.90%), sulphur content (0.49%), allyl propyl disulphide content (6.92 µmol/g), weight loss (6.00%, 14.71% and 34.52% at 30, 60, 90 DOS, respectively) and bulb rotting (2.49% and 5.42% at 60 and 90 DOS, respectively) over 0.6 IW/CPE on the basis of pooled analysis. Additionally, significantly higher net returns (` 3,51,684 per ha) and B:C ratio (3.36) were also recorded with 0.8 IW/CPE. This treatment remained at par with 1.0 IW/CPE. However the maximum water use efficiency (67.98 kg/ha-mm) was recorded with 0.6 IW/CPE. The raised bed land configuration significantly improved growth, yield and quality attributes of onion viz., plant height (51.03 cm), leaf length (45.71 cm), leaf diameter (19.28 mm), neck length (5.32 cm), number of leaves per plant (13.49), neck diameter (22.04 mm), time taken to maturity (115.30 days), bolting (1.74%), leaf chlorophyll content (19.68 µg/100g), leaf N content (175.46 mg/100g), leaf P content (42.73 mg/100g), leaf K content (226.78 mg/100g), leaf S content (0.44%), weight of fresh bulb (82.04 g), weight of cured bulb (74.40 g), polar diameter of bulb (5.41 cm), equatorial diameter of bulb (6.13 cm), number of bulb scales (11.67), thickness of bulb scale (2.58 mm), bulb yield (34.14 t/ha), dry matter content (17.59%), double bulb (2.03%), sulphur content (0.49%), allyl propyl disulphide content (6.96 µmol/g), net returns (` 3,62,804 per ha), B:C ratio (3.43) and water use efficiency (63.31 kg/ha-mm) over the flat bed land configuration on pooled basis. The application of black mulch considerably enhanced the growth, yield and quality attributes viz., plant height (52.50 cm), leaf length (46.99 cm), leaf diameter (19.68 mm), neck length (5.51 cm), number of leaves per plant (13.79), neck diameter (22.15 mm), time taken to maturity (116.36 days), bolting (1.86%), leaf chlorophyll content (19.80 µg/100g), leaf N content (177.78 mg/100g), leaf P content (43.17 mg/100g), leaf K content (229.56 mg/100g), leaf S content (0.44%) weight of fresh bulb (82.64 g), weight of cured bulb (75.58 g), polar diameter of bulb (5.44 cm), equatorial diameter of bulb (6.29 cm), number of bulb scales (11.75), thickness of bulb scale (2.66 mm), bulb yield (34.47 t/ha), dry matter content (17.94%), double bulb (2.08%), sulphur content (0.49%), allyl propyl disulphide content (7.00 µmol/g), weight loss (6.08%, 15.12% and 35.48% at 30, 60, 90 DOS, respectively) and bulb rotting (2.58% and 5.59% at 60 and 90 DOS, respectively) over white-mulch and no mulch on the basis of pooled data, but remained at par with silver-black mulch. Moreover, significantly enhanced net returns (` 3,67,291 per ha), B:C ratio (3.45) and water use efficiency (63.91 kg/ha-mm) were also recorded with black mulch. The most profound interaction effect with the maximum neck diameter (24.89 mm), weight of fresh bulb (94.26 g), weight of cured bulb (85.23 g), polar diameter of bulb (6.24 cm), number of bulb scales (12.52), bulb yield (39.25 t/ha), net returns (` 4,38,927 per ha) and B: C ratio (3.93) was found with I1×B2 on pooled basis. Similarly, the most improved weight of fresh bulb (96.13 g), polar diameter (6.29 cm), bulb yield (39.99 t/ha), net returns (` 4,49,581 per ha) and B:C ratio (3.99) were observed with I1×M2 (being at par with I1×M3). The maximum weight of fresh bulb (90.35 g), weight of cured bulb (81.58 g), bulb yield (37.79 t/ha), net returns (` 416746 per ha), B:C ratio (3.77) and water use efficiency (69.37 kg/ha-mm) were observed in B2×M2 (being at par with B2×M3). The maximum weight of fresh bulb (110.83 g), bulb yield (46.59 t/ha) and net returns (` 5,48,071 per ha) were recorded under I1×B2×M2. Thus, based on pooled data analysis, it may be concluded that the application of 0.8 IW/CPE, raised bed land configuration and black mulch may be recommended for rabi onion cultivation under Agro-Climatic Zone IA (Arid Western Plains Zone) for higher yield of onion.