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Competitive functions, pest dynamics and bio-economic analysis in traditional maize and legumes intercropping systems under rainfed situation of South India

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Title Competitive functions, pest dynamics and bio-economic analysis in traditional maize and legumes intercropping systems under rainfed situation of South India
 
Creator Sridhar, H S
Salakinkop, S R
 
Subject Competitive functions
Economics
FAW control
Intercropping
Weed suppression
Yield
 
Description 827-837
The investigation encompassing traditional maize and legume intercropping systems in various patterns was conducted at
Main Agricultural Research Station, University of Agricultural Sciences, Dharwad, Karnataka, India and revealed that the
maize equivalent yield was significantly higher in maize + blackgram (1:1) with 75 cm × 20 cm spacing (7330 kg ha-1). Also
higher LER (1.4) and ATER (1.2) were recorded in maize + blackgram (1:1) with 90×20 cm spacing. Whereas significantly
higher system productivity index was observed in maize + greengram (1:1) with 75 cm × 20 cm spacing (431.4). Further,
lower aggressivity (-1.2) and higher relative crowding co-efficient (4.3) of intercrops were noticed in maize + blackgram
(1:1) with 90 cm × 20 cm spacing. Competitive ratio of intercrops was higher in maize + cowpea (1:2) (1.27) with wider
spacing of 90 cm × 20 cm. In a 1:1 row ratio of 90 cm 20 cm spacing, the lower light transmission ratio values were observed.
At a 1:2 row ratio and 90 cm 20 cm spacing, maize and cowpea intercropping produced significantly less weed and dry matter.
There was least fall armyworm infestation under maize + greengram at 1:2 row ratio in 90 cm × 20 cm spacing (1.7 %)
which followed maize + greengram in 75 cm x 20 cm spacing at a 1:1 row ratio (1.9 %).The study concluded that values of
most of the intercropping indices were favourable under maize + blackgram and maize + greengram with alternate row at
spacing of 75 × 20 cm and hence, it would be most advantageous for maize-legume cropping system in terms of land
utilization and sustainable maize production with least pest effect.
 
Date 2021-08-06T06:21:50Z
2021-08-06T06:21:50Z
2021-07
 
Type Article
 
Identifier 0975-1068 (Online); 0972-5938 (Print)
http://nopr.niscair.res.in/handle/123456789/57865
 
Language en
 
Relation Int Cl.21: E01H 11/00, A01G 22/00, A01G 22/20, A01H 6/46, A01N 63/00
 
Publisher NIScPR-CSIR, India
 
Source IJTK Vol.20(3) [July 2021]