Studies on the effect of foliar application of zinc chelate (bold) and iron chelate (grip) in rice

Field experiments was conducted at Experimental Farm, Annamalai University, Annamalainagar to study the effect of zinc chelated (BOLD) and iron chelated (GRIP) on the growth and yield of rice, during (Navarai 2009). The experiments were laid out in randomized block design. The experiments consists of nine treatments viz., (T1) 2 gm (GRIP) in 1 ltr of water, (T2) 2 gm(BOLD) in 1 ltr of water, (T3) 3 gm (GRIP) in 1 ltr of water, (T4) 3 gm (BOLD) in 1 ltr of water, (T5) 2 gm liberal zinc chelate in 1 ltr water, (T6) 2 gm liberal iron chelate in 1 ltr water, (T7) 3 gm liberal zinc chelate in 1 ltr water (T8) 3 gm liberal iron chelate in 1 ltr water, (T9) control (no foliar spray). Among the different treatments tried, foliar application of zinc chelated (BOLD) @ 2 g in 1 ltr of water favourably influenced the growth components viz., plant height, leaf area index, dry matter production, grain and straw yield(5708 kg ha-1). This was followed by iron chelated (GRIP) @ 2 g in 1 ltr of water. The control treatment (no nutrient application) registered the lowest values in growth components and yield 3830 kg ha-1 of rice.