Nutrient Management Strategies for Optimizing Growth and Yield in SAU Perilla-1 (Perilla frutescens)

A field research was executed at Sher-e-Bangla Agricultural University in Dhaka, between July and November 2022 to evaluate the effects the various organic manures and inorganic fertilizer levels on the growth, yield and yield contributing characters of SAU Perilla-1 (Perilla frutescens). The research was designed as a split-plot with three repetitions and involved two trials : One is —organic manure types (five levels): i) OM0 (control), ii) OM1 (cowdung), iii) OM2 (vermicompost), iv) OM3 (decomposed rice straw), and v) OM4 (poultry litter); another is —fertilizer levels (four levels): i) F0 (zero material applied, control), ii) F1 (75% of the recommended dose of fertilizers, RDF), iii) F2 (100% RDF), and iv) F3 (125% RDF). Results indicated that poultry litter (OM4) and vermicompost (OM2) significantly enhanced grain yield, with values of 1385.7 and 1249.2 kg ha⁻¹, respectively. These treatments also resulted in higher seed quality, as evidenced by the increased the count of branches/plant, seed count/branch, and the weight of one thousand seeds. In F3 (125% RDF) resulted in the Peak seed production (1323.4 kg ha⁻¹), was preceded by closely to F2 (100% RDF), which yielded 1304.1 kg ha⁻¹. Both F3 and F2 treatments exhibited superior plant growth and seed quality, reflected in a high number of branches, seeds/branch, and 1000-seed mass. The combined application of poultry litter (OM4) and 125% RDF (F2) produced the highest values for all key parameters (branches every plant, grain/branch, one thousand-seed weight and grain production). The combination of OM4 with F2, as well as OM3 with F3 and OM3 with F2, also presented uniform outcomes. Based on these findings, the application of poultry litter or vermicompost, coupled with the recommended dose of fertilizers, is recommended for optimizing Production output and it’s-determining factors in SAU Perilla-1 cultivation in Bangladesh.

Keywords: Organic; Inorganic; Fertilizer; Growth; Seed; Quality; Yield.