Effects on growth parameters of maize of hazelnut husk compost applications under water stress conditions

In this study, husk compost at various ratios (0, 3 ton da-1, 6 ton da-1, 8 ton da-1 was applied to different textured soils (clay loam and sandy loam) and maize were grown under water-deficit stress (water applications 75%, 50% and 25% at the levels of field capacity). Plants were harvested bolting period and it was investigated root and shoot weight, shoot/root ratio, plant height, nitrogen, phosphorus and potassium contents in leaf. Soil texture was effective on the root weight, shoot/root ratio, plant height, and basic elements contents of leaf. Root dry weight (2.38g) and plant height (40cm) in clay loam soil; shoot/root ratio (0.55), nitrogen, phosphorus and potassium contents were higher in sandy loam soil. Husk compost did not impact the shoot/root ratio, each of the other parameters increased in parallel with the increase of compost doses and 8 ton da-1 application gave the highest values. Water stress have been influential on basic macro element concentrations. The leaf nitrogen and phosphorus content (3.40% and 0.16%) increased at 50% water stress conditions. The water stress on the potassium content was effective depending on the texture, and it was determined as 3.99% for the plants grown on the sandy loam soil subjected to 50% water stress. When all data are taken into account, it can be said that irrigation at 50% of the field capacity is sufficient when the soil is mixed with 8 ton da-1 compost