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Author: Ankit × End date: 2022 × Start date: 2020 × Thesis Type: Ph.D ×
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    ThesisItemOpen Access
    Evaluation of wheat and rice varieties under conservation and natural farming systems
    (palampur, 2022-08-22) Ankit; Manuja, Sandeep
    A field experiment was conducted from rabi 2019-20 to kharif 2021 at the Experimental Farms of Department of Agronomy, CSK Himachal Pradesh Krishi Vishvavidyalaya, Palampur and at Rice and Wheat Research centre (RWRC) Malan (H.P.) to study the performance of wheat and rice varieties under different cultivation system. The objective of the investigation was to identify the varieties specially suited for different cultivation practices. The soil of the experimental field at both the locations was silty clay loam in texture, acidic in reaction, medium in organic carbon, medium in available nitrogen, phosphorus and potassium in content. The experiment was laid out in split plot design with four cultivation practices namely reduced tillage, zero tillage, conventional tillage and natural farming in main plot and three varieties each of wheat (HPW 349, HPW 368 and HS 562) and rice viz., Sukara Dhan 1 (HPR 1156), Him Palam Dhan 1 (HPR 2656) and Him Palam Lal Dhan 1 (HPR 2795) in sub plots, replicated thrice. Results so obtained revealed that conventional tillage resulted in significantly higher values of growth, yield attributes and yield of both the crops at both the locations though the adoption of reduced tillage, in which secondary tillage is avoided both the crop residues were used gave comparable yield in wheat. Among the wheat varieties tested HPW 368 recorded significantly higher values of growth parameter, yield attributes and yield while rice variety Him Palam Lal Dhan 1 recorded significantly higher values of yield attributes and yield at both the locations. Significantly lower values of yield attributes and yield were recorded in natural farming treatment in both the crops and at both the locations Higher value of economic indicators were recorded in conventional tillage in both the crops while natural farming resulted in the lowest values of gross return, net return and B:C ratio. Bulk density and water holding capacity of soil was not influences by cultivation practices as well as varieties while significantly higher values of available nutrients as well as higher organic carbon was recorded in reduced tillage while lowest values were recorded in natural farming. In case of wheat, conventional tillage and HPW 368 while in case of rice, conventional tillage and Him Palam Lal Dhan 1 (HPR 2795) were found to be the best treatments for better growth & higher productivity and profitability of wheat- rice cropping system.