Nano-Fertilization of Phosphorous and Potassium, Spraying Sepehr 4 Nano-Fertilizer and Carbon Nanotubes on some Qualitative Traits and Active Substances in the Grains of Rice (Oryza sativa L.)

Abstract

The study aimed to investigate the response of rice crop (Oryza satival L.), local variety Anbar 33, to nano-phosphorus and nano-potassium, spraying with carbon nanotubes and synthetic nano fertilizer Sepehr 4 (K+Fe+Zn+Mn). Some indicators of rice grains traits were used to evaluate the response. The field experiment was conducted in Al-Taliaah district 41-Al-Husseiniyah in the southern pater of Babylon Governorate - Iraq. The experiment was carried out according to the Randomized Complete Blocks Design (RCBD), and the treatments were randomly distributed according to a straightforward one-way experiment. Phosphorus nano fertilizer at two levels 0 and 10 kg ha-1 and potassium nano fertilizer at two levels 0 and 10 kg ha-1, and the treatments of nanomaterials of carbon nanotubes 50 mg L-1 and Sepehr 4 fertilizer (K+Fe)+Zn+Mn, 2.5 ml L-1 it was sprayed on the shoots of plants. The applications were conducted four times of nanomaterials with combinations of foliar sprays and ground additives to the soil, so that the number of treatments is sixteen, with three repetitions. The results of the gas chromatograph coupled with mass spectrometry (GC-MS) presented that the treatment of N-K + (CNT) + Nano(K + Fe + Zn + Mn) potassium nano fertilizer, carbon nanotubes spraying and Sepehr 4 fertilizer K + Fe + Zn + Mn resulted in the highest percentage of the saturated fatty acid content of rice grains 2.16% and volatile oils 6.82%. The treatment of N-(P+K)+N-(K+Fe+Zn+Mn) phosphorus and potassium nano fertilizer and Sepehr 4 fertilizer resulted in the highest value in the content of palmitic acid, 26.41% in rice grains. The treatment of N-(P+K)+(CNT) +N-(IIII) phosphorus and potassium nano fertilizer and spraying carbon nanotubes fertilizer and Sepehr 4 fertilizer resulted in the highest content of rice grains of unsaturated oleic acid, 3.95%. N-K+ (CNT) Potassium nano fertilizer and carbon nanotube fertilizer spraying resulted in the highest value of rice grains’ unsaturated linoleic acid content, 6.94%.