akınoğlu, güney ondokuz mayis üniversitesi - ziraat fakültesi - toprak bilimi ve bitki besleme bölümü, Samsun, Turkey , korkmaz, ahmet ondokuz mayıs üniversitesi - ziraat fakültesi - toprak bilimi ve bitki besleme bölümü, Samsun, Turkey , horuz, ayhan ndokuz mayıs üniversitesi - ziraat fakültesi - toprak bilimi ve bitki besleme bölümü, Samsun, turkey

Effect of different substrate and nutrition solution amount on nitrogen, phosphorus and potassium use efficiency of tomato

34039

The purpose of this study is to determine the effect of 75, 125, 175 and 225 mL of nutrient solutionamount applied daily in 600 g low (SA), 1030 g medium (SO) and 1490 g excess (SF) solid substratmedia consisting of 1:1 peat:perlite mixture on the nutrient N, P and K use efficiency of tomato plant.This experiment was carried out according to the 3x4 factorial experimental design with 3 replications.It was observed that use efficiency of nitrogen supplied from nutrient solution f increased withdecreasing substrate amount.The lowest nitrogen use efficiency was obtained when 75 mL nutrientsolution was applied on 1490 g substrate medium. The highest nitrogen and phosphorus use efficiencyin tomato fruit was obtained when 125 mL of nutrient solution was applied on 600 g of solid medium.Available nutrient solution amounts for optimum nitrogen use efficiency in stem and optimum useefficiency in fruit + stem were found to be dependent on substrate amounts. The potassium useefficiency in stem has been found to be lower than the potassium use efficiency in fruit. The values ofpotassium use efficiency in fruit and stem were not related to the amount of substrate but they wereaffected by the amount of daily supply of nutrient solution.The nitrogen use efficiency by tomato fruitaccording to substrate amounts is ranked as SA SO SF when applied 75, 125 and 175 mL of nutrientsolution.

391

Solid media. Tomato. Substrate amount. Daily nutrient Solution. amount. NPK use efficiency

Anadolu Journal Of Agricultural Sciences

397