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Response of Stevia (Stevia rebaudiana Bertoni.) To Irrigation Schedule, Planting Geometry and Nutrient Levels

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Title Response of Stevia (Stevia rebaudiana Bertoni.) To Irrigation Schedule, Planting Geometry and Nutrient Levels
 
Creator Y.R. Aladakatti
 
Contributor Y.B. Palled
 
Subject Agronomy
 
Description Field experiments were conducted at Water Management Research Center,
Belavatagi, in black clayey soil under irrigated conditions to assess the response of
stevia to irrigation schedules, planting geometry and nutrient levels during 2004-2006.
The first experiment consisted irrigation schedules at 0.8, 1.0 and 1.2 IW/CPE as main
plots and planting geometries of 30x20 cm, 30x30 cm, 45x30 cm and 60x20 cm as sub
plots. The treatments were laid out in split plot design with three replications. The
second experiment consisted three N and P2O5 levels as I factor and II factor
respectively and two K2O levels as III factor. The experiment was laid out in
Randomised Block Design with factorial concept in three replications and one
absolute control as check. Highest dry leaf yield of stevia was obtained with irrigation
scheduled at 1.2 IW/CPE (10.54 t ha-1) which was on par irrigation scheduled at 1.0
IW/CPE (10.32 t ha-1) and significantly lower dry leaf yield was with irrigation
scheduled at 0.8 IW/CPE (9.36 t ha-1). Planting geometry of 30x20 cm recorded the
highest cumulative total dry leaf yield (11.12 t ha-1) which was comparable with the
dry leaf yield obtained with the planting geometry of 30x30 cm (10.89 t ha-1).
Significantly higher dry leaf yield was obtained with nitrogen level of 400 kg ha-1
(11.42 t ha-1) which was on par with 300 kg ha-1 (10.94 t ha-1). Phosphorus level of
200 kg ha-1 recorded significantly highest dry leaf yield (11.14 t ha-1) which was on
par with 150 kg ha-1 (10.85 t ha-1). Higher potassium level of 200 kg ha-1 recorded the
dry leaf yield of 10.78 t ha-1 which was comparable with potassium level of 100 kg ha-
1 (10.46 t ha-1). Nutrient level of 300:150:100 NPK kg ha-1 has been considered as an
economically optimum level of nutrients for stevia.
 
Date 2016-07-25T11:17:17Z
2016-07-25T11:17:17Z
2011
 
Type Thesis
 
Identifier http://krishikosh.egranth.ac.in/handle/1/69715
 
Format application/pdf
 
Publisher UAS Dharwad