A field experiment was carried out in the red and lateritic soil of Regional Research Station, Jhargram, Bidhan Chandra Krishi Viswavidyalaya,West Bengal during the prekharif season of 2015 to evaluate the technological feasibility of mixed cropping of green gram with sesame under different seeding ratio. The experiment was conducted in a randomized block design with four replications. The treatments comprises for the experiment were T 1-sole green gram, T 2 -sole sesame, T 3-green gram: sesame -90:10, T 4-green gram : sesame-75 : 25, T 5-green gram : sesame-60 : 40 , T 6 -green gram : sesame-50 : 50. Yield parameters like number branch/plant, number of pod/ plant, number of capsule/plant, pod length, number of grain per pod/capsule, grain weight etc. were studied. The highest grain yield for both crop was obtained from the sole cropping of green gram and sole sesame. The maximum land equivalent ratio(LER) of 1.18 was observed at green gram : sesame seeding ratio of 60 : 40.The highest green gram equivalent yield( 9.49 q/ha) was obtained from green gram : sesame seeding ratio of 60 : 40 . It was noticed that in all the mixed cropping systems, there was higher LER which indicates higher yield advantage over the sole crop.

Aerobic rice system is the method of cultivation, where the rice crop is established by direct seeding in un-puddle field. The grain yield of aerobic rice in aerobic situation realized by the farmers is still lower. Among many factors, seed rate and row spacing influence the grain yield of aerobic rice crop. The present investigation was carriedout to study the influence of seed rates and row spacing on grain yield of aerobic rice in aerobic situation, and field experiment was conducted at Rice Research Station, Bankura, West Bengal, India during kharif season of 2011 and 2012. The experimental results exhibited that the highest grain yield (3.40, 3.49 and 3.42 t ha-1 during kharif 2011, kharif 2012 and in pooled value, respectively) was recorded from treatment S2, where seed rate was 30 kg ha-1. Among the different row spacing, the maximum grain yield of 3.47, 3.45 and 3.46 t ha-1 during kharif season of 2011 and 2012 and on pooled basis was obtained with the treatment R1 i.e. 20 cm row spacing. The treatment combination of S2 (seed rate @ 30 kg ha-1) and R1 (20 cm row spacing) recorded the highest grain yield (4.01 t ha-1) of aerobic rice. It was established that the seed rate @ 30 kg ha-1 and 20 cm row spacing was promising for realizing best grain yield of aerobic rice in aerobic condition. It is an important eco-safety tool for tackling the climate change scenario.

Field study was conducted in during 2015 and 2016 to evaluate the efficacy of new formulation of atrazine herbicide on weed control in maize. The experiment was conducted at Research farm, kalyani of BCKV. The treatment schedule was untreated, Spraying of new formulation atrazine 50% WP @ 1 kg / ha , new formulation atrazine 50% WP @ 2 kg / ha, new formulation atrazine 50% WP@ 4 kg / ha, old formulation atrazine 50% WP @ 1 kg / ha and old formulation atrazine 50% WP @ 2 kg / ha. The spraying schedule was started on ten days after sowing. The weed complex consisted of Echinochloa colona, Brachiaria mutica, Digiteria sanguinalis, Elusine indica, Cyperus rotundus, Amaranthus viridis, Digera arvensis, Alternanthera philoxeroides, Phyllanthus niruri etc. However application of new formulation @ 4 kg/ha to maize plot gave lowest weed density, dry matter and highest WCE at 10, 20 and 30 DAA. Application of atrazine 50% WP (new source) at the higher doses i.e. @ 4 kg ha -1 gave highest grain yield (4.37 t/ha) , which was statistically at par with the recommended dose i.e. @ 2 kg ha -1 , therefore lower concentration may be preferred over higher concentration. No phytotoxic symptoms were observed in any of the doses of atrazine 50% WP (new). So atrazine 50% WP (new source) @ 2 kg ha -1 may be safely used for effective weed control and better yield of maize.