EFFECT OF FERTILIZATION ON GROWTH, YIELD AND SOME TECHNOLOGICAL CHARACTERISTICS OF SOME NEW BREAD WHEAT CULTIVARS

Abstract

Four field experiments were conducted at Bahtim region during 1990/1991 and 1992/1993 seasons and at Nobaria region during !990/1991 and 1991/1992 seasons, the two regions belong to Agricultural Research Station, Agricultural Research Center, Egypt. The present work aimed to study the response of some wheat cultivars to different levels of nitrogen fertilization and application of foliar in respect of growth characters, yield and its components, chemical content and technological properties of wheat grains.

Each experiment included 32 treatments which were the combination of four

; levels of nitrogen fertilization (0, 35, 70 and 105 kg N/fed), four wheat cultivars

(Giza 155, Giza 163, Giza 164 and Sakha 92) and two treatments of foliar application (without and with foliar application). These treatments were arranged m split plot design in four replications. Nitrogen levels were randomly distributed m the main plots. The combination of wheat cultivars and foliar application were arranged at random in the sub-plots. The area of each sub-plot was 10.5 m2 (3.0 x 3. 5 m). Wheat seeds were drilled in rows at 20 em apart. Phosphorus fertilizer was applied before seeding as calcium superphosphate (15.5% PzOs) at a rate of !00 kg/feddan. Nitrogen fertilizer in the form of ammonium nitrate was applied at three equal doses before the first three irrigations. Application of foliar containing 8% Zn-EDTA, 2% Mn-EDTA and 3% Fe-EDTA was applied after 30 days and 45 days from planting (500 gm foliar micro EDTNfeddan and dissolved in 400 liters of water).

Characters studies: