Please use this identifier to cite or link to this item: http://krishikosh.egranth.ac.in/handle/1/5810023151
Authors: BENEDICTO BENSON LONGWE
Advisor: M.S. AYYANAGOWDAR
Other: B.S. POLISGOWDAR, M. NEMICHANDRAPPA,M.G. PATIL
Title: EVALUATION OF DRIP IRRIGATION LEVELS ON THE PRODUCTIVITY OF CARROT (Daucus carota L.) UNDER RAICHUR AGRO CLIMATIC CONDITIONS
Language: en
Type: Thesis
Agrotags: null
Abstract: Evaluation of drip irrigation levels on the productivity of carrot (Daucus carota L.) under Raichur agro climatic conditions Benedicto B. Longwe ABSTRACT M.S Ayyanagowdar 2015 Major Advisor An experiment was conducted at the Horticultural gardens of the Main Agricultural Research Station, Raichur (Karnataka state) in India during the period October, 2014 to January, 2015 to determine the effect of drip irrigation levels, water use efficiencies and techno economics in carrot grown under Raichur agro climatic conditions. Four drip irrigation levels namely T1, T2, T3 and T4 were applied equivalent to ET levels of 60, 80, 100 and 120 per cent, respectively; and a fifth level under sunken bed method T5 which was applied as a control. Significant differences were observed in plant height, leaf area index, root length, root diameter and yield but not in number of leaves per plant, root core diameter and TSS. The highest root diameter was recorded in T4 (45.33 mm) and lowest in T1 (39.22 mm) while root length was longest in treatment T1 (16.81 cm) and shortest in T4 (14.54 cm). TSS registered highest in T5 (9.48 Brix) and lowest in T4 (8.23 Brix). In terms of water requirements, T1, T2, T3, T4 and T5 respectively used 259.5, 345.0, 430.4, 515.9 and 626 mm to bring the crop to maturity and the corresponding yields were 39.97, 52.36, 42.81, 37.90, and 33.06 t ha-1. Water use efficiency was observed highest in T1 with a value of 15.4 kg m-3 and lowest in T5 (5.2 kg m-3). The control treatment showed lowest figures in all measured growth and quality parameters except TSS. Root diameter increased with increased levels of irrigation while root length decreased with increasing irrigation levels. Economically, T2 was the most rewarding with a B/C ratio of 5.0 however; all the treatments had a B/C ratio greater than one. The least B/C ratio was found in the control treatment (T5) with a value of 3.5. Considering the incremental benefits resulting from saved water over the control treatment, irrigation level 60% ET (T1) showed the highest additional hactarage of 1.4 ha with a potential yield of 55.96 tons and additional revenue of Rs. 559580. The lowest expected gain over control was observed in T4 (120% ET) with an additional yield of 7.5 tons amounting to Rs.75800. It was concluded that irrigation levels have a significant effect on the productivity of carrot under Raichur conditions and the carrot crop performs best under drip irrigation level of 80 per cent ET than the other drip levels and surface irrigation.
Subject: Soil and Water Engineering
Theme: Evaluation of drip irrigation levels on the productivity of carrot (Daucus carota L.) under Raichur agro climatic conditions
These Type: M.Tech.
Issue Date: 2015-06-30
Appears in Collections:Thesis

Files in This Item:
File Description SizeFormat 
M.Tech.(Ag.Engg.) Thesis Benedicto Longwe 2015.pdf14.68 MBAdobe PDFThumbnail
View/Open


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.