Merry Hasmeda
Jurusan Budidaya Pertanian Fakultas Pertanian Universitas Sriwijaya Palembang

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PENGARUH PEMUPUKAN TERHADAP PERUBAHAN MORFOFISIOLOGI DUA VARIETAS PADI PADA KONDISI CEKAMAN RENDAMAN ., Gribaldi; Hasmeda, Merry; Hayati, Renih
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol. 42 No. 1 (2014): Jurnal Agronomi Indonesia
Publisher : Indonesia Society of Agronomy (PERAGI) and Department of Agronomy and Horticulture, Faculty of Agriculture, IPB University, Bogor, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (631.088 KB) | DOI: 10.24831/jai.v42i1.8144

Abstract

ABSTRACTSubmergence tolerance is plant adaptation to anaerobic or hypoxia condition without significant damage.  Changes in morphophysiological characters of rice plant are often related to the plant adaptation to submergence stress.  Fertilization might affect  plant morphophysiological changes under submergence stress. The objective of this research was to study the effect of rice varieties and fertilizer application on the growth and morphophysiological changes under submergence stress. The experiment was arranged in factorial completely randomized block design with six replications. The first factor was rice varieties consisted of Inpara 5 (V1) and IR64 (V2), while the second factor was fertilizer application consisted of  without  fertilization (P0) and with fertilizer application (P1). Submergence stress was applied on 28 days old seedlings for 7 days.  The results showed that fertilizer application increased aerenchyma formation and plant N content of both IR64 and Inpara 5 varietes.  Inpara 5 variety had higher relative chlorophyll content, relative carbohydrate content, and relative plant dry weight thant IR64 variety at 7 days after submergence stress.    Keywords: fertilization, morphophysiology, submergence stress, tolerance
FERTILIZATION STRATEGY TO INCREASE RICE GROWTH AND PRODUCTION UNDER TWO FLOODING CONDITION ON TWO LOWLAND SWAMP TYPES Gribaldi, Gribaldi; Suwignyo, Rujito A.; Hasmeda, Merry; Hayati, Renita
AGRIVITA, Journal of Agricultural Science Vol 38, No 1 (2016): FEBRUARY
Publisher : Faculty of Agriculture University of Brawijaya in collaboration with PERAGI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17503/agrivita.v38i1.498

Abstract

Flood is general phenomenon found in most areas of Indonesia. This can obstruct rice crop cultivation on lowland swamp areas. Fertilization strategy is one of the efforts to increase rice crop growth and production on flooded condition. The objective of this research was to determine the best fertilization strategy on vegetative stage related to rice crop growth and production under flooded condition at two types of lowland swamp. The experimental design used in this research was split-plot design with three replications. The main plot was fertilization treatment consisting of P1 = base fertilization, P2 = fertilization before flooded, P3 = fertilization after flooded and P4 = fertilization before and after flooded. The subplot was rice variety which consisted of V1 = Inpara 3, V2 = Inpara 5, V3 = IR 64 and V4 = Ciherang.  The results showed that fertilization strategy was capable of increasing rice crop growth and production under flooded condition at two types of lowland swamp.  Rice variety Inpara 5 added with fertilizer before flooded on shallow-backswamp and fertilizer addition before and after flooded on middle-backswamp was the best treatment that had produced rice yield with magnitude of 4.48 and 3.43 ton per hectare, respectively.
PENGATURAN APLIKASI PUPUK NITROGEN UNTUK MENINGKATKAN TOLERANSI DAN PEMULIHAN TANAMAN PADI TERHADAP CEKAMAN TERENDAM Gribaldi, Gribaldi; Suwignyo, Rujito A.; Hasmeda, Merry; Hayati, Renih
Jurnal Lahan Suboptimal : Journal of Suboptimal Lands Vol 2, No 2 (2013)
Publisher : Pusat Unggulan Riset Pengembangan Lahan Suboptimal (PUR-PLSO) Universitas Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (454.09 KB) | DOI: 10.33230/JLSO.2.2.2013.57

Abstract

The influence of global climate to the Indonesian climate condition has been in serious condition which was already in high intensity. Flood becomes the fenomena in almost all area in Indonesia. In a swamp area, it can obstruct rice plant cultivation. The submerged rice plant create the obstruction of the rice plant photosynthesis and stress after being submerged. So that  an effort is needed to increase  its tolerance and recovery in order the reduction of the unhulled crop can be reduced.   This study was aimed to obtain a method to increase rice stage is vegetative  tolerance and recovery to submergence stress through the arrangement of nitrogen fertilizer aplication and rice variety.  The experimental design used was factorial completely randomized design with six replications. The factor consists of rice varieties (Inpara 3, Inpara 5, IR 64) and  treatment (P): P1: no submergence, all N dosage prior planting; P2: submerged (7-14 DAP), all N dosage prior planting; P3: submerged (7-14 DAP), all N dosage prior planting + (Si+Zn); P4: submerged (7-14 DAP), ½ N dosage prior planting + ½ N dosage 42 DAP + (Si+Zn); P5: submerged (7-14 DAP and 28-35 DAP), all N dosage prior planting; P6: submerged (7-14 DAP and 28-35 DAP), all N dosage prior planting + (Si+Zn); P7:  submerged (7-14 DAP and 28-35 DAP), ½ N dosage prior planting + ½ N dosage 42 DAP + (Si+Zn). The results showed that the arrangement of nitrogen fertilizer application before submerged to rice plant can increase the rice plant tolerance and recovery to the submerged stress.  The increasing of tolerance and recovery can be obtained at the rice variety given ½ N dosage prior planting + ½ N dosage 42 DAP + (Si+Zn).