Although agriculture activity is declining since 1970 to till date, it has been considered as one of the major contributor to the GDP for many of the African and Asian countries. In these countries, managing the waste and weed biomass produced by the agricultural activity has become one of the major concern. Crop Residue Open Burning has been a usual practice among farmers of Indian and Southeast Asian countries considering it as one of the quickest and least expensive methods of clearing land for the next crop. Due to the lack of proper waste management systems, Crop Residue Open Burning has been producing a large quantity of particulate matter emissions and air pollution. Lignocellulosic biomass (LB) is an abundant and renewable source available in the agricultural waste and weed biomass employed to produce the carbon rich biochar via pyrolysis process. The characterization of biochar has shown enhanced physicochemical properties than the hydrochars in terms of pH value, lower polarity and aromaticity. Through microbiological techniques as well as by enhancing the physical qualities of the soil, such as pH and base cation retention in the rooting zone, biochar may potentially increase crop production. Many studies have proven that one time application of biochar for agriculture soil can benefit to several cropping seasons for at least four years by improving soil fertility and productivity especially in humid tropical regions practicing industrial and subsistence agriculture. Thus, biochar is considered to be a beneficial tool for the management of waste of agriculture and weed biomass. The processes and equipment available for the continuous production of biochar from agricultural biomass are seeking more attention among the researchers these days. This chapter summarizes various feedstocks, processes, their parameters and the efficiency for the production of biochar.