Effect of inoculation and nitrogen top-dressing on yield of new genotype winter pea and wheat cv. Sana mixture

Trogodišnjim istraživanjima (2002. do 2005.g.) utvrđivan je utjecaj djelotvornosti bakterizacije sjemena novog genotipa ozimog graška L4 i prihrane dušikom na broj i masu suhe tvari kvržica, te prinose suhe tvari smjese ozimog graška i pšenice cv. Sana. Prije sjetve izvršena je predsjetvena bakterizacija sjemena graška sojem Rhizobium leguminosarum bv. viciae 1001 iz zbirke Zavoda za Mikrobiologiju Agronomskog fakulteta Sveučilišta u Zagrebu. Ukupno je najveći broj kvržica na korijenu graška utvrđen na bakteriziranoj varijanti 2 (39 kvržice/biljci), kao i masa suhe tvari kvržica (0,194 g/biljci). Prosječni prinosi suhe tvari graška kretali su se od 2,36 t ha-1 (kontrola) do 3,50 t ha-1 (bakterizacija). Prosječni prinosi suhe tvari pšenice varirali su od 5,63 t ha-1 (kontrola) do 7,31 t ha-1 (prihrana dušikom). Ukupni prinosi suhe tvari iznosili su od 7,99 t ha-1 (kontrola) do 10,69 t ha-1 (prihrana dušikom).Three year field trials (2002-2005) were carried out to determine the effect of new genotype winter pea L4 seed inoculation and nitrogen top-dressing on number and nodule dry weight g/plant of pea root and also on the yield of winter pea and wheat cv. Sana mixture. Just before sowing, pea seeds were inoculated with of Rhizobium leguminosarum bv. viciae 1001 from the collection of the Department of Microbiology at the Faculty of Agriculture University of Zagreb. The highest total nodule number on pea root (39 nodule/plant) was determined on the inoculated variant 2 as well as nodule dry weight (0.194 g/plant). Dry matter yields of pea were ranging from 2.36 t ha-1 (control) up to 3.50 t ha-1 (inoculation). Dry matter yields of wheat were ranging from 5.63 t ha-1 (control) up to 7.31 t ha-1 (nitrogen top-dressing). Total dry matter yields were ranging from 7.99 t ha-1 (control) up to 10.69 t ha-1 (nitrogen top-dressing)