Abstract: Two field experiments were carried out at EL KHROUB experimental station, east of Constantine Algeria, to evaluate the effect of N, P, K fertilization and their interaction on growth characters and yield of wheat grown on calcareous soil. The design of each experiment was split-split plot. Urea was applied 0,75% as folier application to one experiment to evaluate the supplemental application of nitrogen under dry farming conditions. The results showed that carbohydrate percentage and total carbohydrate and protein of leaves varied according to the levels of N, P, K fertilization, as well as to presence or absence of urea, Straw yield was significantly increased by increasing nitrogen level and potassium fertilization in absence or presence of urea. However, grain yield was, significantly increased either with increasing nitrogen level in absence of urea, or with increasing phosphorus levels in absence or presence of urea. Straw yield was significantly affected by N * P interaction in absence or presence of urea and N * P * K when urea was applied. However, grain yield was significantly affected by N * P and N * P * K interactions in absence of urea application.
N° Revue: Annals of Agricultural Science (Cairo), 53, 1 - Pagination: Ar49-Ar6 - Date: 2008
URL: http://www.cabdirect.org/abstracts/20083193078.html
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co_auteurs: H Gherroucha, M Baka, L Boudour