Effect of Different Nitrogen Levels and Plant Geometry on Yield and Nutrient Uptake by Brown Top Millet [Brachiaria ramosa (L.)]

Abstract

Bastar (CG). The experiment was laid out in split plot design with three replications. Main plot was three levels of fertilizer i.e. F 1 (75% RDF), F 2 (100% RDF) and F 3 (125% RDF), and sub plot was four different spacing viz. S 1 (22.5 x 10 cm), S 2 (30 x 10 cm), S 3 (45 x 10 cm) and S 4 (60 x 10 cm). Grain yield, fodder yield per plot and per ha was recorded significantly highest in F3 among fertility levels. In case of different planting geometry, S4 recorded significantly higher grain yield but it was at par with S3 and S2. Fodder yield recorded significantly maximum in treatment S1 which was on par with S2 and S3. NPK content in grain and straw recorded significantly higher in treatment F3 (125% RDF) but it was on par with F2 (100% RDF) in N and P content in grain. In case of different planting geometry, S4 (60 x 10 cm) recorded statistically higher P content in straw which was at par with treatment S3.Treatment F3 recorded significantly higher NPK uptake in grain, straw and total uptake among fertility treatments but in case of different geometry, S4 recorded higher NK uptake in grain which was on par with S3 and S2.