Assessment of Planting Distribution Effects and Phosphorus Rate on Potato (Solanum tuberosum L.) Agronomic Characteristics and Yield in Freidan Region (Esfahan)
Subject Areas : New Finding in AgricultureH. Turajzadeh 1 , M. R. Naderi Darbaghshahi 2 , A. Soleimani 3 , A. R. Golparvar 4
1 - M.Sc. in Agronomy, Khorasgan Branch, Islamic Azad University, Khorasgan, Iran
2 - Department of Agronomy and Plant Breeding, Khorasgan Branch, Islamic Azad University, Khorasgan, Iran
3 - Department of Agronomy and Plant Breeding, Khorasgan Branch, Islamic Azad University, Khorasgan, Iran
4 - Department of Agronomy and Plant Breeding, Khorasgan Branch, Islamic Azad University, Khorasgan, Iran
Keywords: Potato, Tuber yield, Planting distribution, Phosphorus rate,
Abstract :
In order to evaluate of the planting distribution effects and phosphorus rate on potato agronomic characteristics and yield, this study was conducted in an agricultural research farm, located in Freidan, in the province of Isfahan in 2009-2010. The study was conducted in the form of strip plots designed as randomized complete blocks with four replications. The horizontal factor included four different planting distribution styles of single rows, double rows, zigzag, and three rows with respective planting densities of 5.3, 6.6, 6.6 and 8 per m2. The vertical factor included four different levels of phosphorus, including controls,10 percent, 20 percent and 30 percent increase in consumption above the recommended level. By reducing the row spacing and increasing density in the three-row planting distribution with 10 percent phosphorus increase, stem height, total air plant weight, leaf area index, number of tubers and tuber yield increased significantly per unit area. The maximum tuber yield equal 53 tons per hectare obtained from treatment of three-row planting distribution+10 percent phosphorus. According to the results, the single-row planting distribution with 10 percent phosphorus produce 38 tons per hectare and larger size tubers would be appropriate in tuber production for domestic consumption and the three row planting distribution with 10 percent phosphorus produce 53 tons per hectare and smaller size tubers would be appropriate in tuber production for seeding purposes in terms similar to those of this research.
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