STUDIES ON DRIP FERTIGATION ON GROWTH AND PRODUCTIVITY OF MAIZE (Zea mays L.)
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Date
2017-08-11
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UNIVERSITY OF AGRICULTURAL SCIENCES GKVK, BENGALURU
Abstract
A field experiment was conducted at ZARS, V. C. Farm, Mandya during Kharif
2015 and 2016 to study the effect of drip fertigation on growth and productivity of maize
(Zea mays L.). The experiment consist of two fertigation interval (4 and 8 days), two
fertigation duration given as 25 % RDF (from sowing to 30 DAS) + 50 % RDF (31 to 50
DAS) + 25 % RDF (51 to 80 DAS) and 50 % RDF (from sowing to 30 DAS) + 25 %
RDF (31 to 50 DAS) + 25 % RDF (51 to 80 DAS) with three fertilizer levels (75, 100
and 125 % RDF) replicated thrice in Randomised Complete Block design using factorial
concept. The results revealed that the fertigation comprising of four days interval as 25 %
RDF (from sowing to 30 DAS) + 50 % RDF (31 to 50 DAS) + 25 % RDF (51 to 80
DAS) with 125 per cent RDF recorded significantly higher plant height (194.7 cm), leaf
area (7563 cm2 plant-1), total dry weight (329.13 g plant-1), cob length (20.2 cm), kernel
weight cob-1 (150.9 g), kernel (86.85 q ha-1) and stover yield (103.73 q ha-1) when
compared to control where surface irrigation and soil application of fertilizers was given
(165.0 cm, 5959 cm2 plant-1, 270.99 g plant-1, 16.7 cm, 120.2 g, 68.81 q ha-1 and 79.20 q
ha-1, respectively). Further, higher net returns (Rs. 84313 ha-1) and B: C (3.07) ratio were
also realized with the same treatment when compared to control (Rs. 48422 ha-1 and 2.58,
respectively). However, application of 75 per cent RDF recorded similar growth and
yield parameters as that of control irrespective of fertigation interval and duration.
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