Effect of Trichoderma and Nitrogen Fertilizer on the Growth and Yield of Tomato

Abstract

An experiment was conducted in a greenhouse, located in the College of agriculture, Wasit University, Iraq. Tomato was planted and grown in winter season (November 2020 - April, 2021). The experiment aimed to study the effect of Trichoderma and nitrogen fertilizer on the growth and yield of tomato. Treatments comprised no application treatment  as a control (T1), 100 kg N / h^-1 application ( T2), 160 kg N / h^-1  application (T3), 200 kg N / h^-1 application (T4), 0 kg N / h^-1 application with 100 g of Trichoderma (T5), 100 kg N / h^-1 application with 100 g of Trichoderma (T6), 160 kg N / h^-1 application with 100 g of Trichoderma (T7) and, 200 kg N / h^-1 application with 100 g of Trichoderma (T8). A randomized completely block design (RCBD) was used with three replicates. Treatment (T6) showed a significant superiority .in plant height (cm), leaf area (dm². Plant^-1), leaves number (leaf. Plant^-1), leaf chlorophyll content (SPAD), Plant dry weight (g), fruit weight (g. fruit^-1) and yield (kg. Plant^-1) compared to the control which showed the lowest average of all traits.