Abstract

A field experiment was carried out at the Al-Shafeieyah Wheat Research Station of the National Program for Wheat Development in Iraq (NPWD) to study the maximization of growth and yield of wheat by foliar application of complete nano-fertilizer and some of biostimulators. The experiment included mono spray application of complete nanofertilizer (CNF), biostimulators fertigrain (F), organic materials (New Humic, NH) and dual sources of CNF+NH, F+NH and without application of fertilizers as control. The experiment was conducted using randomized complete block design (RCBD) with three replications. The results indicated that significant response was observed with the application of di foliar spray of CNF+NH followed by treatments of F+NH and single spraying of CNF, F and NH compared to control, with an increase of 21.11, 29.61, 22.29, 71.17, 106.66 and 71.71% in plant height, length of spike, total chlorophyll SPAD, concentration of N, P and K, respectively, compared to control treatment. The di foliar spray treatment (CNF+NH) significantly increased the grain yield from 5.200 t/ha under control to 16.705 t/ha and also protein yield increased from 12.44% under control to 14.26%. Likewise, harvest index significantly increased to 45.69, 44.47, 44.36, 40.67, 39.01 and 36.20% for treatments CNF+ NH, F+NH, CNF, F, NH and control, respectively. However, both di and mono nano-fertilizer showed their superiority over other treatments in respect to harvest index.