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Agriculture Agronomy Difficulty: Medium

'A' value concept was given by

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To produce the virus free plant the most preferred technique is An important object of the ICZN is to provide Bioreactors are used for If the contents of exchangeable ions (cmol kg -1 ) determined in soil are Na + = 5, K + = 5, Ca 2+ = 10, Mg 2+ = 2, H + = 1, Al +3 = 1, Cl - = 1.6 and HCO - 3 =0.4, the CEC of soil is The value of β 1 in normal distribution is