Manuel Celiz Palada
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Fertilizer Recommendation: Correlation and Calibration Study of Soil P Test for Yard Long Bean (Vigna unguilata L.) on Ultisols in Nanggung-Bogor Susila, Anas Dinurrohman; Kartika, Juang Gema; Prasetyo, Tisna; Palada, Manuel Celiz
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol 38, No 3 (2010): Jurnal Agronomi Indonesia
Publisher : Bogor Agricultural University

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Abstract

Yard long bean (Vigna unguilata L.) 777 was grown in Ultisols, which typically have low pH and high P-fixation, to determine the best correlation of soil extraction methods for soil P with yields, and to develop soil P response categories.  The research was conducted at SANREM base camp in Hambaro Village, Nanggung, Bogor, Indonesia from April-August 2008. Treatments were arranged in a Split Plot Design with three replications. The main plots were treatments with soil P status of 0X, ¼X, ½X, ¾X and X, where is X = 1,590.5 kg SP-36 ha-1 (36% P2O5) applied once  a month before planting.  The subplots were P application rate of   0, 75, 150, 225 and 300 kg P2O5 ha-1. Yard long beans were planted in double rows per bed, 60 cm between rows and 25 cm within rows, 2 seeds per hole, with plot size of  1.5 m x 5 m. Coefficient correlation (r) of  extraction reagents Olsen, Bray-1, HCl 25%, and Mechlich-1 were 0.772, 0.765, 0.755, and 0.732, respectively.  Based on Olsen soil testing methods, soil response categories of very low, low, medium, and high were (ppm P2O5) ≤ 18.40, 18.40 < P < 117.27, 117.27 < P < 267.04, and ≥ 267.04 extracted-P, respectively. Based on Bray-1 soil testing methods, soil response categories for low, medium, and high were ≤ 87.81, 87.81
Application of Starter Solution Increased Yields of Chili Pepper (Capsicum annuum L.) Susila, Anas Dinurrohman; Ma, Chin-Hua; Palada, Manuel Celiz
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol 39, No 1 (2011): Jurnal Agronomi Indonesia
Publisher : Bogor Agricultural University

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Abstract

Chili pepper (Capsicum annuum L.)  was grown with polyethylene mulched on Inceptisol soil with low pH (5.5), low organic-C  (1.54%),  very  low total N (0.12%), low K content (0.29 me (100 g)-1), but very high soil P2O5 concentration (19.2 ppm) to evaluate the best crop management practices with starter solution.  Seven starter solution combinations (1 = No Starter Solution + No CM + No SI, 2 = CM + SSVC,  3 = CM + SSG, 4 = SI + SSVC, 5 = SI + SSG,  6 = SI + CM+ SSVC,  and 7 = SI + CM + SSG) were arranged in a randomized completely block design with four replications. Whereas CM = cow manure, SSVC = organic starter solution, SSG = inorganic starter solution, and SI=standard inorganic fertilizer. The results showed that inorganic, as well as organic, starter solution increased chili pepper growth and yield in less fertile soil. The highest marketable yield was obtained with application of standard inorganic (SI) + cow manure (CM) + inorganic starter solution (SSG).  Inorganic starter solution application resulted in a better plant growth than organic starter solution, being evident at 1 week until 7 weeks after transplanting. However,  inorganic starter solution did not significantly increase total marketable yields. Application of cow manure, standard inorganic fertilizer, or addition of organic starter solution reduced total unmarketable yield, improved fruit qualities and increased marketable yield.   Keywords: cow manure,  crop management,  fertilization, liquid fertilizer, vermi-composting