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Effect of potassium and sulphur on yield and quality of onion and chilli intercrops in a vertisol

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Title Effect of potassium and sulphur on yield and quality of onion and chilli intercrops in a vertisol
 
Creator K.S.Poornima
 
Contributor N.S.Hebsur
 
Subject Soil Sciences and Agri Chemistry
 
Description A field experiment was conducted to study the effect of potassium and sulphur
on yield and quality of onion and chilli intercrops in a vertisol. The experiment was
conducted with a split plot design with 12 treatment combinations. There were four
potassium levels
(0,50,75 and 100 kg K2O/ha) and three sulphur levels (0,15 and 30 kg S/ha).
A significant increase in yield and yield parameters like bulb diameter, weight and
also quality parameters like total soluble solids, pyruvic acid and keeping quality of the bulbs
was observed with increasing levels of potassium and sulphur. Higher bulb yield was
recorded with 100 kg K2O (18.17 t/ha) and 30 kg S ha-1 (16.76 t/ha) which was significantly
superior over other treatments.
Maximum number of fruits plant-1 and 100 fruit weight was also obtained with the
application of 100 kg K2O and 30 kg S ha-1. Potassium @ 100 kg K2O (3.40 q/ha) and 30 kg
S ha-1 (3.30 q/ha) recorded significantly higher dry chilli yield besides recording higher
content of ascorbic acid and total extractable colour of chilli fruits.
Potassium and sulphur contents in onion shoot and fruit portion of chilli increased
with increased levels of potassium and sulphur. The higher uptake of K and S by onion and
chilli plants was observed with the application of 100 kg K2O and 30 kg S ha-1.
Post harvest soil analysis revealed that higher available potassium and sulphur was
recorded in soil with 100 kg K2O plus 30 kg S ha-1, which also recorded highest onion
equivalent yield (23.42 t/ha) under inter cropping system.
Among all treatment combinations, fertilizer dose of 100 kg potassium and 30 kg
sulphur ha-1 was found to be most remunerative as it resulted in higher net returns (89,253
Rs./ha) and B:C ratio (4.2) of onion and chilli intercrops.
 
Date 2016-10-25T15:34:05Z
2016-10-25T15:34:05Z
2007
 
Type Thesis
 
Identifier http://krishikosh.egranth.ac.in/handle/1/81900
 
Format application/pdf
 
Publisher UAS, Dharwad