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Home > Archives > Volume 20, No 8 (2022) > Article

DOI: 10.14704/nq.2022.20.8.NQ44902

Growth and yield of maize (Zea mays L.) treated with bio-fertilizer andirrigated with saline water*

Muayid Abraham Ali, Kadhim Hassan Huthily, Zainab Kadhim Hassan

Abstract

A field experiment was carried out during the growing seasons of 2021 at agricultural research stationof the college of Agriculture - University of Basrah, to study the effect of biofertilizers for Azotobacter and Mycorrhizae (locally prepared and ready-made) on the growth and yield of maize irrigated with various levels of salinity (2, 4 and 8 dS m-1 ) and nine treatments of fertilization: B0 (control: without bio or mineral fertilizer), B1 (local isolate of Azotobacter chroococcum: LA), B2 (local isolate of Mycorrhizae: Glomus spp: LM), B3 (LA + LM), B4 (LA + LM + 50% of the fertilizer recommendation :FR), , B5 (ready-made Azotobacter: RA + ready-made Mycorrhiza: RM + 50% FR), B6 (LA+ LM+75% FR), B7 (RA+ RM +75% FR) and M (100% FR). The experiment was designed as a factorial experiment using the randomized complete block design (R.C.B.D.) with three replications, by arranging split-plot, where the salinity levels were placed in the main plots and the fertilizer levels in the sub-plots. The results showed that the high salinity of the irrigation water led to a decrease in most of the plant growth indicators as well as a decrease in the concentrations of NPK nutrients. Regarding the effect of fertilization, the results indicated that the addition of biofertilizer led to a significant increase in the concentration of NPK in maize leaves, also increase the height, leaf area, dry weight, grain yield, and biological yield. On the other hand, biofertilizer significantly reduced the harmful effects caused by the high level of salinity of irrigation water and caused a significant reduction of sodium and increased the ratio of potassium to sodium in theleaves compared to control and 100% FR. The best results were achieved when using the bio-fertilizer (A. chroococcum + Glomus spp.) with 75% FR.

Keywords

A field experiment was carried out during the growing seasons of 2021

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