PERFORMANCE OF MAIZE (Zea mays L.) + FIELD BEAN (Dolichos lablab L.) INTERCROPPING SYSTEM UNDER DIFFERENT PLANTING GEOMETRY
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Date
2018-08-01
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University of Agricultural Sciences, Bangalore
Abstract
A field experiment was conducted at Zonal Agricultural Research Station, UAS, GKVK, Bengaluru during kharif -2017 with 8 treatments replicated thrice in RCBD concept to study the influence of different planting geometry on growth, yield and economics of maize and field bean intercropping system. Results revealed that, significantly higher kernel yield (10340 kg ha-1) recorded in maize + field bean (2:2) with a paired row of 120/30×15 cm compared to other intercropping systems which was on par with the sole maize crop (9770 kg ha-1) and maize + field bean (2:2) with a paired row of 90/30×30 cm (9680 kg ha-1). Significantly higher yield parameters of maize viz., cob length (19.7 cm), cob girth (17.46 cm), number of rows cob-1 (43.47), number of kernels row-1 (13.47), number of kernels cob-1 (585.54), test weight (41.23 g) and yield plant-1
(184.83 g) were observed under maize + field bean (2:2) with paired row of 120/30×30
cm and also recorded significantly higher yield parameters of field bean viz., pod length
(5.67 cm), number of pods plant-1 (39.27), number of seeds pod-1 (3.50), test weight
(17.53 g) and higher green pod yield as well as haulm yield (4270 kg ha-1 and 3392 kg
ha-1, respectively) as compared to other treatments. Higher, indices viz., MEY (12756 kg ha-1), LER (1.55), ATER (1.43), LEC (0.54), IER (1.59) with higher total nutrient uptake (214.05, 92.26 and 214.15 kg N P2O5 and K2O ha-1, respectively), gross returns (Rs. 1,49,539 ha-1), net returns (Rs. 1,17,439 ha-1) and B: C ratio (4.66) were noticed with the maize + field bean (2:2) with a paired row of 120/30×15 cm. However, higher available soil nutrients were recorded in the maize + field bean (2:2) with a paired row of 120/30×30 cm (215.90, 28.43 and 160.70 kg N P2O5 and K2O ha-1).