Paper Information

Journal:   JOURNAL OF WATER AND SOIL (AGRICULTURAL SCIENCES AND TECHNOLOGY)   MAY-JUNE 2012 , Volume 26 , Number 2; Page(s) 260 To 271.
 
Paper:  THE EFFECTS OF PHOSPHORUS AND INOCULATION WITH PLANT GROWTH PROMOTING RHIZOBACTER (PGPR), PSEUDOMONAS FLUORESCENT, ON YIELD AND QUALITY OF POTATO TUBER (AGRIA CULTIVAR)
 
Author(s):  BEHBOOD M.*, GOLCHIN A., BESHARATI H.
 
* SOIL SCIENCE DEPARTMENT, COLLEGE OF AGRICULTURE, ZANJAN UNIVERSITY
 
Abstract: 

To study the effects of different levels of phosphorus and inoculation with plant growth promoting rhizobacter (PGPR), Pseudomonas fluorescent, on tuber yield and quality of potato a factorial experiment with completely randomized design and three replications was performed in greenhouse of Soil Science Department, Zanjan University, Zanjan, Iran. In this experiment, potato tubers were sown in planting boxes using a loamy soil and factorial combinations of four levels of phosphorus and two levels of PGPR. The phosphorus levels were 0, 15, 30, and 45 mg/kg soil and treatments with and without PGPR were also included in the experiment. The results showed that potato yield and leaf concentrations of macro-elements, except potassium, increased as the levels of soil phosphorus increased. But the leaf concentrations of micro-elements decreased as the soil phosphorus levels increased. The potato yield and leaf concentrations of macro- and micro-elements increased in PGPR inoculated treatments. The interactive effects of phosphorus and PGPR levels were significant on potato yield and dry matter content of tuber and these traits increased as the phosphorus and PGPR levels increased. The interactive effects of phosphorus and PGPR levels were also significant on leaf concentrations of macroelement, except nitrogen, but not on leaf concentrations of micro-elements. The results of this study indicate that potato yield, size, number and dry matter content of tuber and leaf concentrations of macro-elements, except potassium, increase with increasing soil phosphorus levels up to 45 mg/kg soil. But the leaf concentrations of micro-elements decrease as the soil phosphorus levels increase. Inoculation with PGPR improved potato yield and quality of tubers.

 
Keyword(s): POTATO, PHOSPHORUS, PLANT GROWTH PROMOTING RHIZOBACTER, PSEUDOMONAS FLUORESCENT, LEAF CONCENTRATIONS OF MACRO- AND MICRO-ELEMENTS
 
References: 
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