Yield attributes and seed yield of intercrops (soybean, green gram, black gram and cowpea)
Seed yield and yield attributes of soybean, green gram, black gram and cowpea influenced significantly by different land configurations (Table 1). The yield attributes like number of pods per plant, weight of pods per plant, weight of seed per plant, number of seed per pod and number of seeds per plant found to be higher in broad bed furrow followed by ridges & furrow and flat bed method. Similar trend was observed in case of seed yield of intercrops i.e. soybean, green gram, black gram and cowpea. This might be due to the substantial highest moisture in BBF attributed to reduced runoff, soil erosion and higher infiltration rate in the soil, thus more conservation of water. The results are in line with the results of
Shinde et al., (2009), Shantveerayya et al., (2015), Kadam (2015), Lewade (2017) and Dhale (2017).
Seed yield (kg ha-1), straw yield (kg ha-1), biological yield (kg ha-1) and harvest index of pigeon pea
The data on seed yield, straw yield, biological yield and harvest index of pigeon pea is presented in Table 2. Broad bed furrow (L
1) recorded higher pigeon pea seed yield of 1382, 1795 and 1588 kg ha
-1 during 2015 and 2016 and in pooled data, respectively and found significantly superior over flat bed (L
3) but was on par with treatment ridges and furrows (L
2) during both the year and in pooled analysis. This might be due to better soil and plant conditions provided by broad bed furrow leading to increase in growth and yield parameters. Similar trend was observed in case of straw yield, biological yield and harvest index of pigeon pea found to be significantly superior in broad bed furrow followed by ridges & furrow and lowest in flat bed method. Among different intercropping systems pigeon pea + green gram recorded significantly higher seed yield of pigeon pea over rest of intercropping systems but it was at par with pigeon pea + black gram intercropping system during 2015, 2016 and in pooled analysis. Pigeon pea + cowpea intercropping system recorded significantly lowest seed yield of pigeon pea during both the years and in pooled analysis. The straw yield, biological yield and harvest index of pigeon pea found to be significantly superior in pigeon pea + green gram intercropping system over the other intercropping systems. The increase in seed yield, straw yield and biological yield of pigeon pea may be due to less competition offered by green gram and black gram for a shorter period to pigeon pea in comparison to pigeon pea + soybean and pigeon pea + cowpea. Similar result was obtained by
Rathod et al., (2004) and
Kumar et al., (2012). The mean seed yield and yield attributes of pigeon pea were not influenced significantly due to interaction between land configuration and intercropping systems during both the years of experimentation and in pooled data.
Pigeon pea equivalent yield
Data on pigeon pea equivalent yield are presented in Table 3 as influenced by the various treatments during 2015, 2016 and pooled analysis. Among the land configurations, broad bed furrow (L
1) recorded higher pigeon pea equivalent yield of 1595, 2051 and 1823 kg ha
-1 during 2015, 2016 and in pooled analysis, respectively and found significantly superior over flat bed (L
3) but it was found at par with treatment ridges and furrows (L
2) during both the years and in pooled analysis. The pigeon pea equivalent yield was influenced significantly due to different intercropping systems. The pigeon pea equivalent yield in pigeon pea + green gram intercropping was found significantly superior over pigeon pea equivalent yield in pigeon pea + black gram, pigeon pea + soybean and pigeon pea + cowpea intercropping during 2015, 2016 and in pooled analysis. The pigeon pea + cowpea intercropping system recorded significantly lowest pigeon pea equivalent yield during both the years of experimentation and in pooled analysis. The mean pigeon pea equivalent yield as not influenced significantly due to interaction between land configuration and intercropping systems during both the years of experimentation and in pooled data. The results are in tune with those reported by
Goyal et al., (1991), Pujari (1996), Verma and Warsi, (1997),
Jain et al., (2001) and Dwivedi and Bajpai (1997).