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Ikhwani Ikhwani
Indonesian Centerfor Food Crops Research and Development (ICFORD) Jl. Merdeka 147, Bogor 16111
Agriculture, Biological Sciences & Forestry

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Pengaruh Perendamandan Pemupukan N Terhadap Pertumbuhan dan Produksi Padi Toleran Rendaman Ikhwani Ikhwani
Jurnal Lahan Suboptimal : Journal of Suboptimal Lands Vol. 1 No. 1 (2012)
Publisher : Research Center for Sub-optimal Lands (PUR-PLSO), Universitas Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (658.668 KB) | DOI: 10.33230/JLSO.1.1.2012.4

Abstract

Ikhwani, 2012. The Effect of Submergence and N fertilizer Application on Plant Growth and Production of  Submerged Tolerant Rice Variety. JLSO 1(1):12-21.This study aimed at analyzing the effect of submergence and N fertilizer application on the plant growth and production of submergence tolerant rice variety. Problems and constrains of  rice production on flood prone and flash flood lowlandbecoming more frequents and more intens, causing submergence of the whole parts of rice crops for certain periods. The experiment was conducted to determine the effect of submergence and N fertilizer application on the growth of two treatment factors using block randomized design  with submergence tolerant variety Inpara 4 and 5.   An experiment was conducted in the greenhouse at Muara Experimental Station, Bogor in 2009. The treatments  consistedof three replications. The first factor was submergence rice variety Inpara 4 and 5 and the second factor was N management application, whereas (1) 200 kg Urea/ha, (2) 300 kg Urea/ha;  (3) 300 kg Ponska/ha + 100 kg Urea/ha; (4) 400 kg Ponska/ha (2x); (5) Briquette Urea  (300 kg Urea/ha) dan (6) 300 kg Urea/ha  +  Silikat (400 kg SiPPadi HS/ha).  Result of the experiment showed that   submergence for 14 to 24 DAP (10 days) on submergence tolerant rice variety combined with Briquette Urea (300 kg urea/ha  wrapped in strawpaper)  has increased the percentage of tiller number up to 98,9 percent , increased the highest total grain weight  for submergence tolerant rice  up to 41,2 gr per pot and increased in the proportion of  wet leave weight growth rate for  submersion treatment up to 1,4g per pot than that  without submergence. 
Ketahanan Varietas Padi Toleran Rendaman dan Responnya Terhadap Pemupukan Ikhwani Ikhwani
Jurnal Lahan Suboptimal : Journal of Suboptimal Lands Vol. 2 No. 1 (2013)
Publisher : Research Center for Sub-optimal Lands (PUR-PLSO), Universitas Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (658.744 KB) | DOI: 10.33230/JLSO.2.1.2013.30

Abstract

Ikhwani. 2012. Resistency of Submergence Tolerant Rice Variety and Its Response to Fertilizers. JLSO 2(1):1-13.Submergence Tolerant Rice Varieties (STRV) were needed to anticipate yield reduction due to flash flood.  Adoption of good agriculture practices such as nutrient managements for the varieties was expected to reduce yield declaining due to submergence.  The objectives of this study were to understand the effects of submergence, fertilizers application and their interaction to plant growth pattern. A pot experiment was conducted in glasshouse at Muara Experimental Farm, Bogor from July to October 2011. The experiment was arranged in a factorial randomized complete block design with three replications.   Factor 1 was Fertilizer of 112.5 kg N / ha, in the form of prill urea (P1), SCU / ha (P2), Carbon Coated Urea (CCU) (P3), 400 Ponska kg + 100 kg urea / ha (P4), and treatment1 + 400 kg Silicate fertilizer / ha (P5).  Factor 2 was Variety, namely Ciherang sub 1 (V1), Inpara 4 (Swarna sub-1) (V2), Inpara 5 (IR64 sub1) (V3). Total treatments were 15 plus one set of "without submergence" treatment and their replications as controls. The duration of submergence was 14 days, (14 DAT - 28 DAT).  The results showed that submergence reduced rice yield up to 17.5% compared to without submergence, or from 19,2 g/pot to 15,9 g/pot.  Submergence decreased plant growth rate, tiller number and delayed plant maturity.  Decreased of plant height and tiller number for Ciherang sub 1 variety was the lowest.  Threatment of fertilizer with urea prill at this experiment was still the best. In this experiment, urea fertilizer lost due to submergence and washing was neglected
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