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All Journal Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Forum Pasca Sarjana
Fred Rumawas
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Agriculture, Biological Sciences & Forestry Economics, Econometrics & Finance Education

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Journal : Forum Pasca Sarjana

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Response of Soybean (Glycine max (L.) Merr.) to Micronutrients Zn, Cu, B at Some Dosages of Manure on Latosol Soil Maya Melati; Fred Rumawas; Justika S Baharsjah; IPG Widjaja Adhi
Forum Pasca Sarjana Vol. 14 No. 1 (1991): Forum Pascasarjana
Publisher : Forum Pasca Sarjana

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1118.409 KB)

Abstract

The experiment was conducted on a Latosol soil at Cikarawang, Bogor, to investigate the response of plant growth, production and seed size of soybean (Glycine mw (L.) Merr.) to applications of chicken manure and micronutrients (Zn, Cu, B). Manure application increased plant growth, yield and seed size. Yield and seed size were highest at the 15 tons manure/ha treatment, without micronutrients. Manure increased P concentrations in leaves and total nutrient uptake, but reduced Ca, Zn, Cu, and B levels. Without manure, the acid soil caused insufficient P availability. Since Ca and Mg were also shown to be in short supply, the soil should be limed with dolomite. This treatment would alleviate N deficiency through better nodule development.
The Effect of Phosphorus Fertilization and Variety on The Growth and Production of Soybean (Glycine m a (L.) Merr) Under Saturated Soil Culture Munif Ghulamahdi; Fred Rumawas; Joedojono Wiroatmodjo; Jajah Koswara
Forum Pasca Sarjana Vol. 14 No. 1 (1991): Forum Pascasarjana
Publisher : Forum Pasca Sarjana

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1179.526 KB)

Abstract

The objective of this expaiment was to study the effect of phosphorus fertilization on the growth and production of Americana and Lokon under saturated soil culture. The experiment was conducted at the Cikarawang Experimental Station, IPB, on a Latosol, from November 1988 until April 1989. Soybean yield did not respond to the phosphorus application, and maybe due to improved soil P availability under saturated condition. Leaf P concentrations at 9 weeks were sufficient (0.303 to 0.357%) for all levels of treatment. Active nodule growth was longer under saturated soil culture than conventional irrigation. Maximum active nodule growth under conventional culture was reached at 6 weeks, but under saturated soil culture was still increasing between 6 to 9 weeks from 0.175 to 0.342 g/plant for Americana and from 0.162 to 0.260 g/plant for Lokon. Increase of active nodule dry weight was followed by increase of leaf N concentration between 6 to 9 weeks from 3.366 to 3.674% for Americana, and from 3.382 to 3.695% for Lokon. Americana was more tolerant than Lokon to saturated soil culture. Number of Tied pods, 100- sads weight, and seed dry weight/plot of Americana were bigger than Lokon.
Co-Authors IPG Widjaja Adhi JAJAH KOSWARA Joedojono Wiroatmodjo Justika S Baharsjah M A Chozin Maya Melati Munif Ghulamahdi Sugiyanta Wahju Qamara Mugnisyah