INTEGRATED NUTRIENT MANAGEMENT IN PIGEONPEA {Cajanus cajan (L.) Millsp.) BASED INTERCROPPING SYSTEM
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Date
2008-09-09
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University of Agricultural Sciences GKVK, Banglore
Abstract
A field experiment was conducted at Zonal Agricultural Research Station, GKVK,
UAS, Bangalore during khariflOOl - 08 to study the effect of integrated nutrient management
in pigeonpea based intercropping system. The treatment combinations consisted of three
intercropping systems [pigeonpea + soybean (1:1) and pigeonpea + finger millet (2:1) along
with sole crop of pigeonpea], three levels of FYM (0, 2.5 and 5.0 t ha') and with and without
PSB seed inoculation and recommended dose of fertilizer based on area basis was given to
intercropping system. Soybean was grown as an additive intercrop between two rows of
pigeonpea whereas finger millet was grown as an additive intercrop after every two rows of
pigeonpea between the rows. Along with these treatment combinations, sole crop of soybean
and finger millet were tried in randomized complete block design with factorial concept with
three replications.
Sole crop of pigeonpea produced significantly higher grain yield (1598 kg ha"') as
compared to pigeonpea intercropped with soybean (1412 kg ha"') which was significantly
superior to pigeonpea intercropped with finger millet (1265 kg ha"'). The growth components
such as plant height, primary branches plant"'' LAI at 120 DAS and total dry matter and yield
components such as pods plant and grain yield plant"' were significantly higher in sole crop
of pigeonpea as compared to those in pigeonpea intercropped with soybean or finger millet
Irrespective of intercropping systems, application of FYM @ 5.0 t ha"', being on par with 2.5
t ha (1424 kg ha ) recorded significantly higher grain yield of pigeonpea (1483 kg ha"') than
no application of FYM (1369 kg ha"'). Pigeonpea seed inoculation of PSB registered
significantly higher grain yield (1458 kg ha"') than no inoculation of PSB (1392 kg ha"").
Pigeonpea + soybean (1 .T) and pigeonpea + finger millet (2:1) with the application of
recommended dose of fertilizer based on area basis and FYM @ 5 t ha"' along with seed
inoculation of PSB recorded significantly higher pigeonpea equivalent yield (1878 and 1869
kg ha , respectively) as compared to sole crop of pigeonpea with INM practice (1680 kg
ha ). Pigeonpea + finger millet (2:1) additive intercropping with the application of fertilizers
+ FYM @ 5 t ha + seed inoculation of PSB gave the maximum net return of Rs. 20489 ha"'
with LER of 1.239 than pigeonpea + soybean(l:l) with same INM (Rs. 19723 ha"') and sole
crop of finger millet (Rs. 13052 ha"').
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