| Abstrakt: |
In order to investigate the impacts of irrigation cutting and chemical and biological fertilizers, Azoto Barvar 1 and phosphate Barvar 2 on grain yield, essential oil, and biochemical properties of cumin, an experiment has been conducted as split plot, based on a randomized complete block design with three replications in the University of Zabol Research Farm during 2016. Main factors include four levels of irrigation cutting, namely conventional irrigation, irrigation cutting between stem elongation to flowering stages, irrigation cutting between flowering stage and the beginning of the grain filling period, and irrigation cutting from the beginning to the end of the grain filling period. The sub-factor is the different type of phosphorous fertilizer, including control (no fertilizer application), Azoto Barvar 1 and Phosphate Barvar 2, and triple superphosphate. Results indicate that the interaction of irrigation cutting and phosphorous fertilizer has been significant on seed yield, oil percentage, carbohydrates, proline, total protein, absorption of nitrogen, phosphorous, and potassium. The greatest seed yield, oil percentage, total protein, nitrogen, potassium, and phosphorus has been obtained from conventional irrigation along with the application of Azoto Barvar 1, while the greatest proline has been achieved from irrigation cutting between beginnings to the end of grain filling period along with the application of triple superphosphate. The greatest carbohydrate has been observed from irrigation cutting from the beginning to the end of the grain filling period along with the application of Phosphate Barvar 2. In conclusion, results indicate that biofertilizers have positive impacts on the improvement of nutritional conditions of plants under irrigation cutting conditions. [ABSTRACT FROM AUTHOR] |
