Document Type : Research Paper
Authors
1
Department of Agronomy and Plant Breeding, Faculty of Agriculture, Yasouj University, Yasouj, Iran.
2
Department of Agronomy and Plant Breeding Faculty of Agriculture, Yasouj University, Yasouj, Iran
3
Department of Agronomy and Plant Breeding, , Faculty of Agriculture . Yasouj University, Yasouj, Iran
4
Department of Agronomy and Plant Breeding, Faculty of Agriculture, Yasouj University, Yasouj, Iran
Abstract
Uptake and use efficiencies of phosphorus and some other nutrients affected by rate of phosphorus fertilizer and bio-fertilizers application. This experiment carried out to evaluate the effect of chemical and biological phosphorus fertilizers on the phosphorus uptake and use efficiency in rapeseed in a factorial based on a randomized complete block design with three replications at the research station of the Faculty of Agriculture, Yasouj University in 2019. The first factor included zero, 25, 50, 75, 100 and 125 kg ha-1 of phosphorus and the second factor included phosphorus biofertilizer containing Pseudomonas and its non-use. Phosphorous increased the uptake of nitrogen, phosphorus and potassium. The highest yield was obtained from 125 kg of phosphorus and phosphorus biofertilizer. With the consumption of 125 kg of phosphorus and biofertilizer, the highest phosphorus use efficiency and remobilization was achieved. The highest phosphorus harvest index was obtained from the applying 50 kg of phosphorus and no biofertilizer, and the highest phosphorus utilization efficiency was obtained from the applying 50 kg of phosphorus along with biofertilizer. Generally, using biofertilizer with phosphorus increased nutrients uptake and yield. In traits such as grain yield, grain and shoot phosphorus content there was no significant difference between the application of 50 kg of phosphorus + bacteria with the application of higher levels of phosphorus fertilizer alone, so biological fertilizer can be substitited a significant part of chemical phosphorus fertilizer.
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