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Impact of drip fertigation on productivity of arecanut (Areca catechu L.)

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Title Impact of drip fertigation on productivity of arecanut (Areca catechu L.)
Not Available
 
Creator Bhat Ravi
Sujatha, S
Balasimha D
 
Subject Arecanut Drip fertigation Nutrient use efficiency Water use efficiency
 
Description Not Available
The present investigation was conducted at Vittal, Karnataka, India during December 1996
to May 2006 to evaluate the effect of four fertigation levels (25, 50, 75 and 100% of
recommended fertilizer dose, 100:18:117 g N:P:K palm 1 year 1), three frequencies of fertigation
(10, 20 and 30 days) and two controls (control 1, i.e., drip irrigation without fertilizer
application and control 2, i.e., drip with 100% NPK soil application) on productivity and
resource use efficiency of arecanut. The experiment was laid out in RBD incorporating
factorial component (4 3 + 2) in 2-year-old arecanut plantation. Pooled analysis of 4-year
data indicated the significant influence of both fertilizer dose and frequency of fertigation on
kernel yield of arecanut. Among fertigation levels, the kernel yield was significantly higher
in 75% NPK fertigation, i.e., 75:13.5:87.7 g N, P, K application per year (3721 kg ha 1) than in
other levels (3083–3121 kg ha 1). The yields observed in 10 (3431 kg ha 1) and 20 days
frequencies (3382 kg ha 1) were at par and significantly superior to monthly fertigation
frequency (2952 kg ha 1). Fertigation of 75% NPK at 10 days frequency registered maximum
yield (4017 kg ha 1), which was closely followed by fertigation of 75% NPK at 20 days
frequency (3924 kg ha 1) and fertigation of 100% NPK at 20 days frequency (3579 kg ha 1).
The yield increase with 75% NPK fertigated at 10 days interval was 100% over control 1
(2008 kg ha 1). Different fertigation levels registered higher dry matter partitioning to
kernel, i.e., 6.7–7.4% of the total biomass than no fertilizer application (5.6%). A significant
correlation between biomass accumulation in different parts and fertigation levels indicates
the importance of efficient application of nutrients at correct time and quantity. Leaf water
potential increased significantly with increase in frequency of fertigation from 10 to 30 days
interval. A strong linear correlation (R2 = 0.914) was observed between fertigation level and
total root biomass. The root biomass increased considerably from 3.23 (no fertilizer) to
7.99 kg per palm (75% NPK). Significant relation between root biomass and organic carbon
content in soil based on polynomial regression (R2 = 0.769) was also noticed. Water use
efficiency (WUE) was significantly superior at 75% NPK applied at 10 days interval over 100%
NPK applied at same interval. However, it was at par with 75 and 100% NPK applied at 20 days
interval Agronomic nutrient use efficiency (ANUE) was significantly higher at 25% NPK
(14.9 kg kernel produced per kg nutrient applied). Fertigation up to 75% NPK provided a
higher ANUE than the combination of drip irrigation and soil application of 100% NPK
indicating greater production at lesser application rates. The 11-year study indicated that
adoption of fertigation not only increases productivity, but also ensures higher efficiency of
the two most critical inputs, i.e., water and nutrients in crop production.
Not Available
 
Date 2018-11-21T10:09:39Z
2018-11-21T10:09:39Z
2007-05-24
 
Type Research Paper
 
Identifier Not Available
0378-3774
http://krishi.icar.gov.in/jspui/handle/123456789/12396
 
Language English
 
Relation Not Available;
 
Publisher Elsevier