A field experiment on direct-seeded rice was conducted during kharif 2011 and 2012 at the College Farm, ANGRAU Hyderabad, to study the influence of different doses of bispyribac sodium 10% SC (10, 15, 20, 25 and 40 g a.i/ha) on physical, physico-chemical and fertility properties of the soil. Persistence of the herbicide in soil from application to harvest of the crop and the residues in plant samples at harvest were also studied. No significant changes in physical (texture, bulk density, particle density, pore space, maximum water holding capacity), physico-chemical (pH, EC, CEC, organic carbon) and fertility properties of the soil (available N, P2O5 and K2O) were noticed at any of the applied doses. Bispyribac sodium dissipation in soil followed a first-order decay process. Half-life (DT50) of bispyribac sodium was 13.10 days, 10.21 days and 9.93 days at 40 g/ha, 25 g/ha and 20 g/ha doses respectively. DT90 values were also calculated. No detectable residues of bispyribac sodium were found in the straw or grain at the time of harvest.

The present investigation aims to study the comparative effect of different treatments of organic and inorganic fertilizers on the growth and biochemical constituents of groundnut (Arachis hypogaea L.). The plants were raised in the field with different treatments of fertilizers like arbuscular mycorrhizal fungi (AMF), Azospirillum (AZM), market waste compost (MWC), nitrogen (N), phosphorus (P) and potassium (K). The plant samples were collected after 15, 30, 60 and 90 days for the measurement of different growth parameters. The analysis of the morphological and biochemical parameters such as shoot and root length, fresh and dry weight, total leaf area, chlorophyll ?a? and ?b?, total chlorophyll, amino acids, starch and total sugar was made at different days intervals. The effect of organic and inorganic fertilizers on growth parameters and biochemical constituents of leaves was significantly increased in all the treatments. In general, bio-fertilizer applications are to boost the effectiveness of Arbuscular Mycorrhizal Fungi (AMF), Azospirillum (AZM) and market waste compost (MWC) on nodulation and yield of groundnut. The organic fertilizers treated plants showed better performance than the inorganic fertilizers and control.