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Fertilizer Management Through Soil Test Value Interpretation in Two Local Varieties of Transplant Aman Rice

S. Karim
Department of Agronomy, Bangladesh Agricultural University, Mymensingh

M.H. Kabir
Department of Agronomy, Bangladesh Agricultural University, Mymensingh

M. W. Islam
Bangladesh Secretariat, Dhaka

A. R. Choudhury
Establishment Section – 6

M. Bodiuzzaman
Upazila Chairman, Nalitabari, Sherpur

Abstract/ Executive Summary:

The experiment was carried out to study fertilizer management through Soil Test Value Interpretation (STVI) on two local varieties of transplant Aman rice, viz. Nizersail and Basiraj under three fertilizer recommendations - STVI recommendation, BRRI (Bangladesh Rice Research Institute) recommendation and AEZ (Agro-ecological Zone) recommendation. The experiment was laid out in a randomized complete block design with three replications. Fertilizer recommendations, rice varieties and their interactions had significant effect on most of the yield and yield contributing characters. The highest number of total tillers hill^-1 (13.20), effective tillers hill^-1(10.43), grains panicle^-1 (77.08), number of total grains panicle^-1 (87.32), grain yield (2.91 t ha^-1), biological yield (7.54 t ha^-1) and harvest index (38.57%) were recorded with the STVI fertilizer recommendation. AEZ fertilizer recommendation showed lowest values for above mentioned parameters except harvest index. Nizersail had higher plant height (77.82 cm, numerical value), number of total tillers hill^-1 (14.72), number of effective tillers hill^-1 (10.62), grains panicle^-1 (79.68), number of total grains panicle^-1 (89.24), grain yield (2.93 t ha^-1) and harvest index (40.08%) than that of Basiraj while Basiraj contributed to higher number of sterile spikelets panicle^-1 (11.86), weight of 1000-grains (17.73 g), straw yield (4.85 t ha^-1), biological yield (7.63 t ha^-1) than that of Nizersail. Therefore, STVI fertilizer recommendation can be an effective management procedure of fertilizers in transplant Aman rice.

Keywords: Fertilizer management, Soil test value interpretation and transplant Aman rice

Location: Department of Agronomy, Bangladesh Agricultural University, Mymensingh

Start Date: 03-10-2007

End Date: 08-01-2008

Program Area: Crop-Soil-Water Management

Commodity: Rice

Objectives:

1. To study fertilizer management through soil test value interpretation in two local varieties of transplant Aman rice with an aim to find out the way of using efficient and balanced fertilizers among three fertilizer recommendations.

Methodology:

Two local varieties of transplant Aman rice viz., Nizersail and Basiraj were used as test crops in the experiment. Two factors were included in the study-A) 2 Varieties viz., i) Nizersail (V₁) and ii) Basiraj (V₂) B) 3 Fertilizer recommendations viz., i) STVI fertilizer recommendation 84-56-57- 60 Kg Urea (N)-TSP (P₂O₅)-MOP (K₂O)-Gypsum(S)ha^-1(F₁), ii) BRRI variety specific fertilizer recommendation Nizersail: 90-50-35-50 kg Urea (N)-TSP (P₂O₅) –MOP (K₂O)-Gypsum (S) ha^-1 (F₂) Basiraj: 90-50-35-50 kg Urea (N)-TSP (P₂O₅) -MOP (K₂O)-Gypsum (S) ha^-1and iii) AEZ fertilizer recommendation 74-15-50-33 kg Urea (N)-TSP (P₂O₅)-MOP (K₂O)-Gypsum (S) ha^-1 (F₃) Zinc (2.12 ppm) here. The experiment was laid out in a randomized complete bock design with three replications. The size of each unit plot was 4.0 m × 2.5 m. The distance between blocks and plots were 1 m and 0.75 m, respectively. Soil samples were analyzed for determination of N, P, K, S, Zn at Soil Resources Development Institute (SRDI), Mymensingh. Healthy and vigorous seeds of the selected rice varieties (Nizersail and Basiraj) were collected from Bangladesh Institute of Nuclear Agriculture (BINA), Mymensingh. Pre-germinated seeds were sown in the wet nursery bed on 15 August, 2007. The layout of the experimental field was done on 2 October, 2007 in accordance with the experimental design after the land was ready for transplanting of seedlings. As N was low in soil (0.13%), N was applied in three equal splits as Urea. The first one-third was applied at final land preparation and the second one-third was given at rapid tillers stage (20 Days after transplantion). Both of these installments were applied as broadcast and incorporated with soil followed by weeding. The third installment was applied as broadcast at 5-7 days before panicle initiation stage (45 DAT). The land was fertilized as per treatment. 34 days old seedlings were uprooted carefully. Thirty days old seedlings were transplanted on 3 October 2007 at 25 cm × 15 cm spacing giving two seedlings hill^-1. Intercultural operations like gap filling, irrigation, weeding, insect pest control were done whether necessary. The crop was harvested at full maturity (i.e on 8 January, 2008). Five hills (excluding border hills) were randomly selected from each plot for recording necessary data on various plant characters. The grain yield was finally converted to t ha^-1 and adjusted at 14% moisture level. After harvest data on different parameters were recorded, compiled and tabulated in proper form for statistical analysis. Analysis of variance was done with the help of computer package MSTAT. The mean differences among the treatments were tested with Duncan’s Multiple Range Test.

Source of Information: J. Agrofor. Environ. 3 (1): 95-99 2009; ISSN 1995-6983

Article Link (Online Journal):

Funding Source:

Total Budget (Tk.) :

Achievement/Findings:

It can be concluded that Nizersail showed best yield and yield contributing characters under STVI fertilizer recommendation at 84-56-57-60 Kg Urea (N)-TSP (P₂O₅)-MOP (K₂O)-Gypsum(S) ha^-1.

Knowledge Management: Journal