Evaluating the response of NPSZnB fertilizer on yield and yield components of teff at North western zone of Tigray, Ethiopia

Teff is one of the major crops grown in central and north western zones Tigray regional state. However, its productivity low due to soil fertility as a result intensive long history cultivation erosion. Therefore, field experiment was carried out on farmer’s Medebay zana Tahtay koraro districts (Adekemalk Beles kebelles) during 2017 2018 main cropping seasons evaluate response NPSZnB fertilizers yield components teff. The treatments consisted seven levels (0, 50, 100, 150, 200, 250 300kg ha-1) control treatment recommended NP (64:46) kgha-1. laid RCBD design with three replications. Analysis results revealed that, days 50% heading, plant height, number productive tillers per plant, straw yield, grain harvest index resulted significant difference over plot at both districts. 90% physical maturity head panicle length district have no within any their treatments. highest yields (2165.3 1996.6 kg were obtained application 200 ha-1of NPSZnB. It has 56.9 55.9% increment 7.4 11% blanket recommendation districts, respectively. Thus, applications 200  150 blended ha-1 N adjusted 64 economically beneficial compared other respectively because net benefit marginal rate return above minimum level (100%). Keywords: Blended, boron, zink, nitrogen, phosphorus, sulfur, teff yield.