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Effect of Date of Transplanting on Yield and Yield Attributes of Two Advanced Mutants of Rice in Aman Season

M.R. Islam
Scientific Officer
Agronomy division, BINA, Mymensingh

M.S. Rahman
Chief Scientific officer
(Research coordinator), BINA, Mymensingh

M.H. Rahman
Scientific officer
TCP division, BINA, Mymensingh

M.A. Awal
Scientific officer
OFRO division. BARI. RARS, Jamulpur

S.M.G. Hossain
Scientific officer
Planning Section, BINA, Mymensingh.

Abstract/ Executive Summary:

A field experiment was conducted at the experimental farm of Bangladesh Institute of Nuclear Agriculture (BINA), Mymensingh to find out the optimum planting date(s) for two advanced mutants of rice along with two check varieties in Aman season in 1997. The mutants were BINA115 and BINA 163 and the check varieties were BINASAIL and BR 22. There were three planting dates starting from July I with an interval of 30 days. The last planting was on September 1. The plant characters like plant height, number of tillers/hill panicles/hill, panicle length and thousand grain weight showed significant variation among the dates of planting. The grain yield varied significantly among the varieties irrespective of planting dates. The last planting date September I produced the highest grain yields, 4.5 and 4.04 t/ha given by BINASAIL and BINA 163, respectively.

Keywords: Transplanting, Yield, Yield attributes, Rice

Location: BINA farm, Mymensingh

Start Date: 00-00-1997

End Date: 00-00-1998

Program Area: Variety and Species

Commodity: Rice

Objectives:

The objective of the optimizing planting dates for the newly developed high yielding rice mutants BINA 115 and BINA 163.

Methodology:

The experiment was conducted with two advanced mutants of T. aman rice viz. BINA 115 and BINA 163 along with released varieties of BINASail and BR 22, transplanted in three different dates viz. July 1, August 1 and September 1 at BINA farm, Mymensingh during the aman season in 1997-98. The land topography was medium high with sandy loam texture. The p^H of the soil is around 6.5 belongs to the old Brahmaputra alluvial soil tract. The experimental site is characterized by subtropical climate with high temperature, heavy rainfall, high humidity during Kharif season (April to September) and moderately low temperature in the Rabi season (October to March). The experiment laid out in Randomized Complete Block Design (RCBD) with three replications where the the unit plot size was 5m x 4m. At the time of final land preparation, the whole amount of TSP and MP were applied at the rate of 90 kg and 40 kg per hectare, respectively. Nitrogen as urea was applied in two equal splits at 15 and 30 days after transplanting, respectively at the rate of 150 kg per hectare as top dressing. Thirty days old two seedlings were transplanted in a hill with a spacing of 25 cm x 15 cm. Intercultural operations such as weeding, irrigation and pesticide applications were followed to ensure normal growth of plants. At maturity, agronomic parameters like population/m², plant height, tillers/hill, panicles/m², panicle length. panicles/hill, grains/panicle, 1000 grains weight, grain yield straw yield and harvest index were measured. The data were analyzed using the Computer software Program M-STAT and the means were compared by least significant difference (LSD).

Source of Information: Bangladesh Journal of Nuclear Agriculture. Vol: 15, pp: 34-40, 1999

Article Link (Online Journal):

Funding Source:

1.

Budget:

Total Budget (Tk.) :

Achievement/Findings:

The BINA advanced mutants were in the range of 104-118 cm and the BR 22 was found to the lowest one in plant height (103-106 cm). However, BINASAIL could produce the highest panicles/hill (9.07/hill) at August 1 planting while BR 22 produced the highest tillers/hill at the July 1 and September I planting. BINASAIL resulted significantly the highest number of grains /panicle (l57.S/panicle) at second planting date which was followed by last planting (I56.8/panicle). The lowest grains/panicle (150/panicle) of BINASAIL was observed by July 1 planting. The mutants BINA 115 and BINA 163 produced grains/panicle in the range of 120-147 irrespective of planting dates. This finding suggests that dates of planting have significant effects on yield and yield attributes and that the different mutants/varieties differ in such effects even within the given dates of planting.

Knowledge Management: Journal