Author(s):

Surgyan Rundla and RC Bairwa

Abstract: A field experiment was laid out in randomized block design with three replication during rainy season of 2016 at Agronomy Farm of College of Agriculture, Bikaner (Rajasthan) to study the effect of foliar supplementation of N, P and K fertilizers on growth attributes of pearl millet [Pennisetum glaucum (L.)] hybrid RHB-177. The experiment comprised of 14 treatments of different N, P and K fertilizers applied as basal, top dressing and foliar application. Urea, DAP and KCl were used for basal application and urea as top dressing. Foliar spray of NPK (18:18:18) was done at 25 DAS and 35 DAS and urea (0.5, 1.0 and 1.5%) at 35 DAS. The growth (plant height and dry matter accumulation) and physiological attributes like crop growth rates (CGR), relative growth rate (RGR), leaf area index (LAI) and chlorophyll content significantly increased with application of fertilizes. Application of 75% N (50% basal+25% top dressing at 25 DAS):P:K+1.5% spray of NPK (18:18:18) at 35 DAS (T₁₁) resulted in highest plant height at 30 DAS, 60 DAS and at harvest (43.66, 160.4 and 172.4 cm, respectively) and dry matter accumulation 30 DAS, 60 DAS and at harvest (7.61, 44.11 and 69.01 g plant^-1). Likewise T₁₁ gave maximum CGR at 0-30 DAS and 30-60 DAS (3.76 and 18.02 g m^-2 day^-1, respectively), RGR at 30-60 DAS (58.52 mg g^-1 day^-1), LAI at 30 DAS (2.30) and 60 DAS (5.31) and chlorophyll content at 40 and 60 DAS (2.42 and 2.24 mg g^-1, respectively).

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