Agro-physiological effect of Fertigroe N, P and K nanofertilizers in corn at different levels and timing of fertilization
2019
Cantimprate, S.C. | Lorenzo, J.C.A. | Lalap, A.A. | Gauna, G.B. | Villegas, G.M.
A research was conducted to investigate the effect of different timing and rate of FertiGroe nanofertilizers N, P and K on the growth and yield of corn. Agronomic and physiological parameters measured indicated that generally, FertiGroe treated plants performed better than the control, however, same treatment have no advantage over conventionally fertilized corn plants. Days to tasseling of conventionally fertilized corn plants occurred a week earlier compared to FertiGroe treated plants, thus days to harvest was also a week earlier. With fertilizer rates from 50%-125% of the recommended rate (RR) for both conventional and nanofertilizer, better agronomic characteristics were observed. Split application (2x and 3x) of nanofertilized and conventionally treated corn plants resulted to more consistent crop growth as measured by physiological parameters such as leaf weight ratio (LWR) and total dry matter (TDM) compared to 100% RR fertilizer (control) applied only once at planting. Timing and fertilizer rate interaction did not significantly affect the parameters measured. The highest rate of nanofertilizer (125%) had statistically similar ear weight and number of kernels with conventionally fertilized treatments of the same rate. Uniformity in application of nanofertilizer due to its fine, powdery nature still needs to be improved to have a precise application.
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