The present studies were conducted to the estimation of genetic variability and heritability for physiological traits in chickpea (Cicer arietinum L.) under Randomized Completely Block design with two replications in the field of the department of Plant Breeding and Genetics, of RAK College of Agriculture, Sehore (MP), during the crop season 2019- 2020. The high heritability were observed for LA at 45 DAS (99.22%, 99.61%, 93.87%) & 60 DAS (99.87%, 99.88%, 98.91%), LAI at 45 DAS (99.18%, 99.6%, 93.64%) & 60 DAS (99.86%, 99.89%, 98.92%), TDM at 45DAS (97.21%, 9.13%, 99.05%) & 60 DAS (99.2%, 99.59%, 99.55%), NAR (98.06%, 97.24%, 92.9%), CGR (98.62%, 99.28%, 99.18%), chlorophyll index (SPAD) (95.23%, 94.72%, 82.59%) in normal, late and very late sowing conditions as well as the collection of genotypes for these traits could be useful in the above-mentioned environments. As a result, most of the characters were highly heritable and less influenced by the environment The high Genetic advance as per mean was observed for LA at 45 DAS (73.17%, 91.15%, 60.49%) & 60 DAS (85.11%, 64.40%, 68.11%), LAI at 45 DAS (73.12%, 91.06%, 60.07 %) & 60 DAS (85.07%, 64.37%, 68.15%), TDM at 45DAS (70.40%, 74.89%, 53.54%) & 60 DAS (71.79%, 65.27%, 39.49%), NAR (160.61%, 53.33%, 81.64%), CGR (79.16%, 73.90%, 60.10%), chlorophyll index (SPAD) (59.37%, 52.58%, 43.00%) in E-I, E-II & E-III sown environments, which suggested that these characters can be useful for selecting higher yielding genotypes.

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Background: Farmers are facing many constraints related with pigeonpea cultivation therefore proper resources management and scientific practices can increase the production and productivity of pigeonpea. Drip and mulching can be a way to achieve the goal of more crop per drop. Methods: The field experiments were conducted during kharif season of year 2016-17 and 2017-18. The study area is located (23°16'48'' N-latitude, 77°21'36'' E-longitude) in Madhya Pradesh. The experiment was laid out in vertisols with twenty seven treatment combinations consisting of three mulching, three discharge rate (2 lph-D1, 4 lph-D2 and 8 lph-D3) and three irrigation levels viz. 60% CPE (I1), 80% CPE (I2) and 100% CPE (I3). Well treated bold seeds of pigeonpea (TJT-501) were dibbed in soil on ridge-furrow land configuration. Result: The plant height was maximum in 2 lph (175.78 cm), I2 (176.10 cm) and number of branches, number of pods per plant, seeds per pod also followed the same trend. Maximum yield was registered with D1 (16.48 q/ha) followed by D2 (14.91 q/ha) and D3 (14.46 q/ha). Irrigation level I2 (16.01 q/ha) registered 13.77% higher seed yield than I1 (14.07 q/ha). In case of discharge rate, B:C decreased as rate increased. Among irrigation level treatments, lowest value (1.26) of B:C recorded with 60% CPE whereas highest B:C (1.56) was registered with 80% CPE, which is at par with 100% CPE (1.52). It can be concluded that pigeonpea cultivation is not economical with mulch and 100% supply of irrigation during kharif. It is viable to supply irrigation as per CPE only at branching, flowering and pod development stages.

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