Application of drought stress indicators for selecting suitable fertilizer treatments in forage corn

Subject Areas : New Finding in Agriculture

A. R.  Dadiyan ¹ (Member of faculty Department of Agronomy, Islamic Azad University Farahan branch, Farahan, Iran)

Received: 2019-03-08 Accepted : 2019-03-08 Published : 2016-11-21

Keywords: nitrogen, deficit irrigation, Nitroxin, Maxima,

Abstract :

      In order to investigate drought indices used to identify the appropriate fertilizer treatments in forage corn, hybrid Maxima (Zea mays var maxima) Separate experiments were conducted during 2014 and 2015 in Arak. The experiment was a split-split plot in a randomized complete block design with four replications. Irrigation treatments consisted of two irrigation levels (I0) and deficit irrigation (I1) as the main factor, Nytroxin in three levels: 0, 0.5 and 1 ml per 30 kg of seed and nitrogen levels of 0, 125 and 250 kg per hectare, which was considered as a minor factor. The results shown that STI, GMP and MP most appropriate indicators to determine the best fertilizer treatments is applied, to achieve the highest production yield both normal irrigation and stress. The maximum yield under both traditional irrigation and drought conditions the treatment combination of 1 ml per 30 kg seed Nitroxin with 250 kg Nitrogen per hectare (No2N2), respectively, which was selected as the most favorable treatment combination.        

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