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Variable irrigation and fertigation effects on response of onion (Allium cepa) in a semi-arid environment

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Title Variable irrigation and fertigation effects on response of onion (Allium cepa) in a semi-arid environment
Not Available
 
Creator Satyendra Kumar
M. IMTIYAZ
A Kumar
 
Subject fertigation, Effect, Allium Cepa, Semi-Arid environment
 
Description Not Available
Field experiment was conducted for three years to study the response of onion (Allium cepa L.) to variable irrigation and fertigation in microsprinkler and drip irrigation regimes under semi-arid environment. For this purpose, different soil moisture regimes for the crop were created by variable irrigation, viz 0.60 (I 1), 0.80 (I 2), 1.00 (I 3) and 1.20 (I 4) of irrigation water (IW) applied and pan evaporation (CPE) ratio. Three different fertigation (N: P 2 O 5: K 2 O)@ 50: 25: 25 (F 1), 75: 37.5: 37.5 (F 2) and 100: 50: 50 (F 3) kg/ha were combined with above treatments for both the irrigation systems. Our study revealed highest onion yield with 1.20 irrigation treatment and fertigation treatment 100: 50: 50 kg NPK, but reduced significantly with the reduction in irrigation and fertigation under both the microirrigation systems. Irrigation production efficiency (crop yield per unit volume of water applied) was highest with 0.80 irrigation water indicated that water was utilized most efficiently under this irrigation schedule. Results of the study also indicated that fertigation saved 25% nutrient as compared to traditional fertilization. The quadratic production function yielded optimum value of irrigation as 488 mm for maximum onion yield with microsprinkler while drip irrigated crop required 519 mm water to reach the maximum yield potential in a semi-arid environment. Overall results of the study indicated that microsprinkler performed slightly better with I 2 and above irrigation level compared to drip irrigation.
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Date 2019-11-27T07:58:16Z
2019-11-27T07:58:16Z
2008
 
Type Research Paper
 
Identifier Effect of micro-irrigation on productivity and water use of cumin (Cuminum cyminum) at varying fertility levels
Not Available
http://krishi.icar.gov.in/jspui/handle/123456789/25580
 
Language English
 
Relation Not Available;
 
Publisher Indian Council of Agricultural Research