Humus Indirectly Affects Plant Growth Through Its Effects on Soil

Q28: Which of the following added to a

Q29: Soil organic matter consists of _.<br>A)living organisms

Q30: Poorly drained soils generally contain more organic

Q31: Aridisols generally contain more organic matter than

Q32: Alcohols,methane and organic acids of various kinds

Q34: The main contributions of the active fraction

Q35: Allelopathic chemicals,once added to soil,usually make the

Q36: Detritus consists of _.<br>A)living organisms and cells<br>B)dead

Q37: Mineralization of soil organic matter results in

Q38: The most active decomposers of freshly added