Maize (Zea mays L.) + Pigeonpea (Cajanus cajan L. Millsp.) Intercropping System In Northern Transition Zone Of Karnataka Under Delayed Onset Of Monsoon
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Date
2018-08
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University of Agricultural Sciences, Dharwad
Abstract
A field experiment was conducted at Main Agricultural Research Station,
University of Agricultural Sciences, Dharwad on medium black soil during Kharif
2017, to study the performance of maize and pigeonpea with different row proportions
and planting geometry under delayed onset of monsoon.
The experiment was laid out in a randomized complete block design with
11 treatments replicated thrice. The treatments comprised of sole maize, sole pigeonpea
with two genotypes (TS-3R and GRG-811), two row proportions of maize and
pigeonpea (2:1 and 4:2 respectively) and planting geometry with 60 cm ´ 20 cm and
75 cm ´ 20 cm for maize and 120 cm ´ 20 cm for pigeonpea.
Sole maize (98.6 q ha-1) and pigeonpea cv. TS-3R and GRG-811 recorded
significantly higher grain yields (16.5 and 14.9 q ha-1 respectively) over intercropping
systems. Intercropping resulted in significant reduction in the yield of both maize and
pigeonpea crops. However, it was better compensated by the component crop in the
intercropping system as seen in equivalent yield and monetary returns. Higher maize
equivalent yield and land equivalent ratio was recorded with maize + pigeonpea
cv. TS-3R (4:2) with 60 cm ´ 20 cm spacing (111.5 q ha-1 and 1.36 respectively).
However, it was on par with maize + pigeonpea cv. GRG-811 (4:2) with 60 cm ´ 20 cm
spacing (105.8 q ha-1 and 1.31 respectively). Higher area time equivalent ratio was
recorded with maize + pigeonpea cv. GRG-811 (4:2) with 60 cm ´ 20 cm spacing
(1.08). However, it was on par with maize + pigeonpea cv. TS-3R (4:2) with 60 cm ´ 20
cm spacing and sole pigeonpea cv. GRG-811 with 120 cm ´ 20 cm spacing (1.06 and
1.0 respectively). Net returns and B:C ratio were also maximum in maize + pigeonpea
cv. TS-3R (4:2) with 60 cm ´ 20 cm spacing ( 77,957 ha-1 and 2.4 respectively) and it
was on par with maize + pigeonpea cv. GRG-811 (4:2) with 60 cm ´ 20 cm spacing
( 71,981 ha-1 and 2.3 respectively), as compared to other intercropping systems with
respect to row ratio and planting geometry.