Title: Effect of different methods of application Kesht Kar Bartar fertilizer on yield and yield components of Hashemi rice Variety
Author: Hassan Shokri Vahed
Today, most farmers with a new approach and attention to the effects of nutrient depletion in continuous and single-crop agriculture, have chosen chemical fertilizers as the main suppliers of soil elements and in this regard, various companies produce and distribute new types of chemical fertilizers in the country. It is novel that one of the important tasks of agricultural research is to study the effectiveness of any new fertilizer product for crops and also to obtain information about its amount, time, and method of consumption. In order to investigate the effect of different methods of application Kesht Kar Bartar fertilizer (with different amounts of micro and macro elements) on yield and yield components of Hashemi rice Variety, an experiment was conducted in the Rice Research Institute of Iran in a randomized complete block design with three replications in the 2020 year. In this study, traits, including grain yield, straw yield, number of tillers, plant height, panicle length, uptake of some elements with straw and grain, as well as grain protein content and biological yield were evaluated.
The results showed that the application of mineral fertilizer of Kesht Kar Bartar influenced the traits such as paddy and straw yield, tiller number, plant height, potassium, and nitrogen uptake by grain and straw on different statistical levels. In this experiment, the highest grain yield of 3984 kg/ha was obtained by treating the application of chemical fertilizers according to the recommendations of the soil test (T2). Then, the treatment of seed consumption, rooting, foliar application of mineral fertilizer with a concentration of 2 per thousand in the middle of tillering with 50% of chemical fertilizers according to the recommendation of soil test (T8) with a production of 3957 kg/ha was in second place. The implementation of this experiment showed that the consumption of fertilizer of Kesht Kar Bartar, due to the yield potential of Hashemi cultivar and the reduction of consumption of common chemical fertilizers, could produce an acceptable yield.
Keywords: Foliar application, microelements, rice, paddy, fertilizer, yield