MORPHO-AGRONOMICAL RESPONSE OF RICE (ORYZA SATIVA L.) TO FOLIAR IRON

M. Seddighi, K. Agahi, D. Talei, M. A. Dehaghi

Abstract: Rice (Oryza sativa l.) is a crop set to be in high demand of market. Among the nutrients, iron is an essential element in plants’ phenological cycles. Assessment of this element effects could lead to improving the plant growth as well as the quantity and quality of yield. To achieve this, the effect of foliar application of iron was examined on yield and components of rice. The experiment was conducted based on randomized block design with three replicates. The morphologic and agronomic feedbacks of the rice were analyzed by exposing the rice seedlings to different concentrations of Fe solution (0, 50, 100 and 150 mgl-1). It was revealed that spraying Fe had significant effect on grain yield (GY), grains per plant (GP) and grain length (GL). Estimation of Correlation coefficients showed that, GY was positively correlated with GL and GP, while it was negatively correlated with unfilled grains (UG). According to multiple regression analysis using the stepwise method, it was concluded that increasing in the GY was mainly due to increase of GP and also reduction of UG amount. Consequently, the results suggest that, spraying Fe could be considered as a suitable technique to increase rice grain yield.

Keywords: chemical fertilizers; iron concentration; micro-nutrients; rice

Date published: 2017-09-25