Browsing by Author "Zulputra, Zulputra"

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    Ketersediaan P, Serapan P dan Si oleh Tanaman Padi Gogo (Oryza sativa. L) pada Lahan Ultisol yang diaplikasikan Silikat dan pupuk Fosfat
    (2018-08-24) Zulputra, Zulputra; Nelvia, Nelvia
    The research was conducted from August 2014 to January 2015 in the Ultisol land, Pematang Berangan Village, Rokan Hulu Regency, Riau Province. The study aims to determine the availability of P, P and Si uptake by upland rice plants granting silicate and phosphate fertilizer on Ultisol land. The form of this research is experimental factorial completely randomized design consist of two factors. The first factor is silicate consists of four levels (0, 50, 75, and 100 kg SiO2/ha), while the second factor is phosphate fertilizer consists of four levels (0, 36, 54, and 72 kg P2O5/ha), each combination was repeated three times. The results showed that addition of silicates and phosphates increase the availability of P, P and Si uptake of upland rice crop. Giving of 100 kg SiO2 and 36 kg P2O5 per hectare increase uptake of P and Si, each respectively increased by 208 % and 218 % compared without silicates and phosphates fertilizer.
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    Respon Padi Gogo (Oryza Sativa L.) Terhadap Pemberian Silikat Dan Pupuk Fosfat Pada Tanah Ultisol
    (2018-02-06) Zulputra, Zulputra; Wawan, Wawan; Nelvia, Nelvia
    The research aims to study the response of upland rice on the application of silicates and phosphate fertilizer on Ultisol. The study was conducted in land Ultisol in Pematang Berangan Village, Rokan Hulu Regency, Riau Province. Research in the form of experimental factorial completely randomized design consisting of two factors. The first factor is silicate consists of four levels (0, 50, 75, and 100 kg SiO2/ha), while the second factor that phosphate fertilizer consists of four levels (0, 36, 54, and 72 kg P2O5/ha), each combination was repeated three times. The results showed that application of silicates and phosphates increase the growth and yield of upland rice. The application of 100 kg SiO2 and 36 kg P2O5 per hectare increasing of the percentage of grain pithy and weight of dry grain per square meter, about 21% and 117% respectively compared to without silicates and phosphates