Differential Response of Rice to Nitrogen and Zinc on Phenological Traits and Yield in Typic Haplusterts Soil

Field experiment was conducted in farmers field at B. Mutlur in clay loam- Typic Haplusterts soil to study the effect of different nitrogen sources and zinc on phenological traits and yield in rice. The experiment was conducted in factorial randomized block design with three replications. The treatments consisted of Factor-A- Nitrogen sources, no nitrogen (N0), 75% mineral nitrogen + 25% organic manure (vermicompost) (N1), 50% mineral nitrogen + 50% organic manure (vermicompost) (N2), 25% mineral nitrogen + 75% organic manure (Vermicompost) (N3), Factor B – Zinc application, no application (Zn0), soil application (Zn1), foliar application (Zn2), soil + foliar application (Zn3). There were totally sixteen treatments combinations. Application of nitrogen and zinc significantly increased the phenological traits and yield in rice over control. The results revealed that N3Zn3 recorded highest phenological traits viz., plant height (112.6cm), tiller count (18.6), LAI (4.9) chlorophyll content (46.5 SPAD value), CGR (12.8 g m-2d-1), RGR (35.7 mg g-1d-1) and NAR (1.39 g dm-1d-1) in clay loam soil. The highest grain yield (5992.4 kg ha-1) and straw yield (7624.2 kg ha-1) was recorded in N3Zn3 and lowest grain and straw yield was recorded in N0Zn0 (3436.7 kg ha-1 and 5162.5 kg ha-1) than individual application of nitrogen or zinc in rice.

Kiruthika G1., R. Manivannan*2, M. V. Sriramachandrasekharan3 and P. Senthilvalavan4 Click here to download file

Research Article | Published online : 02-Dec-2021