Nanophosphorus Fertilizer Stimulates Growth and Photosynthetic Activity and Improves P Status in Rice

Figure 1

P concentration in the initial solution (day 8 from the beginning of the treatments) and its reduction after 7 d in the presence of rice plants (day 14 from the beginning of the treatments). Means of three independent replicates. Treatments: 1 = distilled water; 2 = type A gel (0.1042 g L^-1); 3 = 50% [P]_{Yoshida solution} from KH₂PO₄; 4 = 100% [P]_{Yoshida solution} from KH₂PO₄; 5 = 50% de [P]_{Yoshida solution} from nano-KH₂PO₄; 6 = 100% [P]_{Yoshida solution} from nano-KH₂PO₄; 7 = 50% [P]_{Yoshida solution} from nano-KH₂PO₄ with trypsin (0.1 mg L^-1); 8 = 100% [P]_{Yoshida solution} from nano-KH₂PO₄ with trypsin (0.2 mg L^-1).