alexa THE EFFECT OF DIFFERENT LEVELS OF PHOSPHORUS FROM TRIPL


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Research Article

THE EFFECT OF DIFFERENT LEVELS OF PHOSPHORUS FROM TRIPLE SUPER PHOSPHATE CHEMICAL FERTILIZERS AND BIOLOGICAL PHOSPHATE FERTILIZER (FERTILE 2) ON PHYSIOLOGICAL GROWTH PARAMETERS OF CORN (SC704) IN AHVAZ WEATHER CONDITIONS

Masood Araei1* and Mani Mojaddam1
  1. Department of Agronomy, College of Agriculture, Ahvaz branch, Islamic Azad University, Ahvaz, Iran
Corresponding Author: Masood Araei, E-mail: [email protected], [email protected]
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Abstract

In order to study the effect of different levels of triple super phosphate chemical fertilizer and biological phosphate fertilizer (fertile 2) on the yield components of corn (SC704), this research was carried out in Shahid Salemi field located in Ahvaz in 2012 as a factorial experiment in randomized complete block design with 4 replications. The experiment included two factors: first, biological phosphate fertilizer (fertile 2) at three levels of 0, 100, 200 g/ha; second, triple super phosphate chemical fertilizer at three levels of 0, 60, 90 kg/ha of pure phosphorus (P2O5).The results showed that phosphate fertilizer (fertile 2), significantly increased growth indices such as total dry weight (TDW), leaf area index (LAI), crop growth rate (CGR), and net assimilation rate (NAR) in corn and generally improved corn production. In general, it could be said that the increase of yield is related to the increase of soluble phosphorus in soil so that phosphorus plays an important role in root development and prevention of the accumulation of phosphorus compounds and their negative effects on the absorption of some elements in the soil. With regard to the results obtained it seems like that the decrease of application of triple super phosphate chemical fertilizer to less than a half together with the use of biological phosphate fertilizer (fertile 2) is particularly important to achieve more grain yield in Ahvaz weather conditions

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