Investigation Growth Indices Analysis and Sorghum ( Sorghum bicolor L.) Crop Production Affected Different Level of Nitrogen and Nitroxin Bio-Fertilizer
محورهای موضوعی : Journal of Crop Nutrition ScienceArmaghan Charkhab 1 , Mani Mojaddam 2
1 - Msc. Graduated, Department of Agronomy, Ahvaz branch, Islamic Azad University, Ahvaz, Iran.
2 - Assistant Professor, Department of Agronomy, Ahvaz branch, Islamic Azad University, Ahvaz, Iran.
کلید واژه: nitrogen, leaf area index, <i> Dry matter, Yield <, /i>, ,
چکیده مقاله :
BACKGROUND: Bio-fertilizers being essential components of organic farming playvital role in maintaining long term soil fertility and sustainability.OBJECTIVES: Study yield and growth indices of sorghum in response to consumechemical fertilizer and Nitroxin bio-fertilizer.METHODS: This research was conducted via split plot experiment based on completelyrandomized block design with three replications in research field of Ahvaz IslamicAzad University. Pure nitrogen from urea source was used as the main plot infour levels (0, 50, 100, 150 kg.ha-1) and Nitroxin bio-fertilizer was used as sub plot intwo levels (lack of use of bio-fertilizer and use of 1 L.ha-1 Nitroxin per 200 kg seeds).RESULT: According result of analysis of variance effect of different level of nitrogenand Nitroxin on seed yield, biologic yield and harvest index was significant at 1%probability level but interaction effect of treatments on harvest index was not significant.Assessment mean comparison of different levels of nitrogen fertilizer indicatedthat the highest seed yield (341 g.m-2), biologic yield (1218 g.m-2) and harvest index(28%) belonged to the treatment with consumption of 150 kg.ha-1 nitrogen and thelowest amount of seed yield (200 g.m-2) biologic yield (1045 g.m-2) and harvest index(20%) was for non-consumption of nitrogen (control). Use 1 L.ha-1 Nitroxin led toachieve highest seed yield (324 g.m-2), biologic yield (1185 g.m-2) and harvest index(27%) compare to control treatment. The highest leaf area index was obtained in theapplication of bio-fertilizer compared to non-consumption (4.5), and the non-use ofbiological fertilizer with a maximum leaf index was 3.8. Net assimilation rate in theuse of biological fertilizer at 25 days after planting the equivalent of 10 gr.m-2 per daystarted and in the 47 days after planting, it was 6.3. The non-use of biological fertilizerbegan at 8.1 after 25 days after planting and reached 6.1 in 47 days after planting.CONCLUSION: So finally consume 150 kg.ha-1 chemical nitrogen fertilizer with 1L.ha-1 Nitroxin bio-fertilizer advised for farmers.
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