EFFECT OF COMPOUND SULPHER FERTILIZER ADDITION ON THE GROWTH AND YIELD FOR SUNFLOWER Helianthus annuus L.

Abstract

Two field experiments were carried out at the college of agriculture - university of Al-Anbar in spring season of 2001 and 2002 years. To study the effect of three treatments. The first was application of agricultural sulpher at level 2 Meq S°. ha-1 (T1) the second was application phosphorus and nitrogen at level 240 kg P2O5 . h-1 and 180 kg N. ha-1 respectively (T2), and third treatment was application compound sulpheric fertilizer (6 : 19 : 65) (N : P2O5 : S) to soil with level 3 Meq. ha-1 (T3). Which replicated third time on growth and productivity of sunflower (Euro-flower hybrid) and to limitation the fertilizer efficiency for production. Same chemical properties of rizosphere soil were determined with crop growth parameters and total uptake of nitrogen also phosphours during flowering and maturation stages. Addition to yield properties. The results were showed significantly superiority for T3 treatment in reduction the soil pH and increasing soil EC also soil content from nitrogen and available phosphors with increasing them uptake at the two studied stage of plant growth during the two years. Which positively reflect on growth parameters (plant height, leaf area and plant dry matter) also yield components, head diameter, number of seeds per head and total seeds yield. which superiority with 27.3 and 10.65 % portion on T1 during the two studied years respectively. Oil contains and its yield was increased at T3 treatment also. Which gets best fertilizer efficiency for production reached 19.8 % as average in comparison to T1. the results were showed that addition of sulpher with crop recommendation of nutrients more efficiency to increase the yield which reflected the importance in improvement of nutrient availability when we added it to the soil as fertilizer.