Fertilization Strategy to Increase Rice Growth and Production Under Two Flooding Condition on Two Lowland Swamp Types

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 shallowbackswamp 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 t ha -1 , respectively.

Modified Application of Nitrogen Fertilizer for Increasing Rice Variety Tolerance toward Submergence Stress

“…According to [10], N fertilizer application was the proper measure to decrease negative effect of submergence stress on crop. Moreover, according to [16], recovery capacity highly depends on plant capability to adapt quickly to certain condition after they experience flooding stress. In addition, [4] stated that better recovery for rice plant which experienced submergence stress was indicated by faster new tillers emergence so that plant had relatively same tiller numbers or even higher tiller numbers than that of plant which did not experience submergence stress.…”

Productivity of Two Rice Varieties Using Ratoon System Through N Fertilizing Treatments at Two Flooding Types on Tidal Lowland Area

“…N fertilizer application treatments (A) were consisted of A1: N fertilizing: 1/3 dose at planting period + 1/3 dose at 42 dap + 1/3 dose at 1 day after harvest (dah) of main crop; A2: N fertilizing: 1/3 dose at planting period + 1/3 dose at 42 dap + 1/6 dose at 1 day after harvest (dah) of main crop + 1/6 dose at 21 days after harvest (dah) of main crop. Land is cleared from the existing grasses and the crops residue by spraying with Paraquat herbicide and followed by soil tillage using moldboard plow which is drawn by tractor and then beds plot is made with size of 9 m x 3 m. Seeds having 21 days old are transplanted into each treatment plot (unit) with size of 9 m x 3 m which is previously added with manure at dose of 10 ton.ha -1 and subsequently they are planted at upright position with planting distance of 25 cm x 25 cm, using 2 seeds per hole with 2 cm in depth according to Gribaldi's method [14]. N Fertilizer is given according to treatments, whereas P and K fertilizers are given to all treatment during planting period with dose of 60 kg per hectare, respectively.…”

Peningkatan Produktivitas Padi Hibrida Melalui Pemberian Pupuk N Dengan Sistem Ratun Di Lahan Pasang Surut

“…Hipa 5 Ceva diinkubasi selama 3 hari, setelah berkecambah disemaikan pada bedengan yang berukuran 1,2 m x 8 m. Bibit yang telah berumur 21 hari dipindahkan ke setiap petak (unit) percobaan, yang berukuran 3 m x 2 m dimana sebelumnya diberi pupuk kandang dengan takaran 10 ton ha -1 , selanjutnya bibit ditanam dengan posisi tegak dengan jarak tanam 25 cm x 25 cm, dan menggunakan 2 bibit per lubang yang kedalamannya cukup 2 cm, metode ini mengikuti metode (Gribaldi et al, 2016). Pemupukan P dan K diberikan pada saat tanam untuk semua perlakuan, dengan dosis untuk satu hektar masing-masing 60 kg (Setiawan et al, 2012), sedangan dosis dan aplikasi pupuk N disesuaikan dengan perlakuan.…”