Patel, J. J.GAIKWAD, VAIBHAV POPAT2018-06-212018-06-212013http://krishikosh.egranth.ac.in/handle/1/5810054976An experiment was conducted during rabi season in the year 2010-2011 and 2011-2012 with succeeding summer black gram at College Agronomy Farm, B. A. College of Agriculture, Anand Agricultural University, Anand, Gujarat to study the "Effect of row ratios, phosphorus levels and weed management practices on performance, of mustard - chickpea intercropping and its residual effect on summer black gram under middle Gujarat conditions" The soil of the experimental plot was loamy sand in texture. It was low in organic carbon and available nitrogen, while medium in available phosphorus and high in available potash with pH 7.9 and EC value 0.11dsm-1. There were thirty treatment combinations comprised of five row ratios IC1 Chick pea (Sole), IC2 Mustard (Sole), IC3 Mustard + Chick pea (1: 1), IC4 Mustard + Chick pea (1: 2), IC5 Mustard + Chick pea (1: 3) and two levels of P 1 (25 kg P2O5 ha-1 ) , P2 (50 kg P2O5 ha-1) and three levels of weed management practices ( W1 :Weedy check , W2 : Hand weeding at 20 and 40 DAS, W3 : Pendimethalin @ 1 kg ha-1 (Pre-emergence) tested in randomized block design under factorial concept with three replications. Plant population of mustard recorded at 15 DAS and at harvest showed non-significant differences due to different row ratios. The plant heights at all the crop growth stages were significantly influenced due to different row ratios. Higher plant height (30.89 cm) was recorded under the treatment IC5 Mustard + Chick pea (1:3) row ratio while significantly the lowest plant height (27.94 cm) at 30 DAS was observed under the treatment IC3 Mustard + Chick pea (1:1). The difference in the plant height recorded at 60 DAS due to the different row ratios was non-significant on pooled basis. While plant height recorded at 90 DAS and harvesting was significantly influenced due to different row ratios. Significantly the highest plant height (204.83 and 213.94 cm) were recorded under the treatment IC2 (sole mustard) at 90 DAS and at harvest during second year and on pooled basis, respectively. Lower plant height (193.31 and 207.44 cm) of mustard were recorded under the treatment IC5 Mustard + Chick pea (1:3) which was remained at par with the treatment IC3 Mustard + Chick pea (1:1) and IC4 Mustard + Chick pea (1: 2) at harvest, respectively on pooled basis. The result revealed that different row ratios did not exert its significant influence on number of siliquae per plant and length of siliqua on pooled basis analysis. The results pertaining to seed and straw yield, harvest index and test weight revealed that the different row ratios registered significantly higher mustard seed and straw yield, harvest index as well as test weight were observed under the treatment IC3 Mustard + Chick pea (1: 1). Lower mustard seed yield, straw yield, harvest index as well as test weight were observed under the treatment IC5 Mustard + Chick pea (1:3). Plant height of chickpea recorded at 25, 50 DAS and at harvest was influenced significantly by the different row ratios, respectively. It had non-significant effect on pooled basis result at 25 DAS and at harvest. Plant heights measured at 50 DAS as influenced by the different row ratios were significant during both the years and on pooled basis. Significantly the maximum plant height (41.81 cm) of chickpea was observed under the treatment IC3 Mustard + Chick pea (1: 1) on pooled result. It was remained at par with the treatment IC4 Mustard + Chick pea (1:2). Significantly the lowest plant height (33.72cm) was recorded under treatment IC] sole chick pea. Among the various row ratios, the treatment IC3 Mustard + chickpea (1:1) recorded significantly the highest number of pods per plant (53.55), number of seeds per pods (1.67) seed (809 kg ha-1), dry gotar yield (1678 kg ha-1), harvest index (41.1 %) and test weight (25.63 g.) of chickpea on pooled basis, respectively. Significantly less number of pods per plant (27.76), seeds per pod (1.52), seed (300 kg/ha) and dry gotar yield (502 kg ha-1) of chickpea were recorded under the treatment IC5 Mustard + Chick pea (1: 3) on pooled basis. While significantly the lowest harvest index (25.9 %) and test weight (24.7 g.) was observed under the treatment IC1 (sole chick pea), respectively. As far as interaction effect concern all the possible interaction of different factors had the significant influence on the harvest index of mustard. Different phosphorus levels did not differ significantly for plant height on pooled basis at 30, 60, 90 DAS and at harvest while also it exerted non-significant effect on the yield attributes of mustard (number of siliquae per plant, length of siliqua, test weight of mustard and oil content) on pooled basis.enAGRONOMY, AGRICULTUREA STUDYThesis