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Effect of Variety, Number of Seedling Hillper Hill and Fertilizer Application on the Growth and Yield of Fine Rice Under Late Transplanted Condition

A.A. Mamun
Department of Agronomy, Bangladesh Agricultural University, Mymensingh-2202, Bangladesh

M.A.R. Sarkar
Department of Agronomy, Bangladesh Agricultural University, Mymensingh-2202, Bangladesh

F.M. J. Uddin
Department of Agronomy, Bangladesh Agricultural University, Mymensingh-2202, Bangladesh

Abstract/ Executive Summary:

A field experiment was conducted at the Agronomy Field Laboratory, Bangladesh Agricultural University, Mymensingh during the period from 31 September to 21 December 2009 to examine the effect of variety, number of seedling hill^-1, fertilizer application and their interactions under late transplanted condition. The experiment included three rice varieties viz. BRRI Dhan34, Ukunmadhu and Kataribhog, three levels of seedlings hill-1 viz. 2, 4 and 6 and two recommended doses of urea fertilizer viz. Prilled Urea and Urea Super Granule. It was laid out in three factor randomized complete block design (RCBD) with three replications. Variety, number of seedlings hill^-1, recommended dose of urea fertilizer and their interactions exerted significant influence on almost all the crop characters. Yield increased with increasing number of seedlings hill^-1 up to four seedlings hill^-1 and application of recommended dose (1.8g) of USG fertilizer for all varieties with the improvement of yield contributing characters. Kataribhog was found significantly superior to Ukunmadhu and BRRI dhan34 with respect to plant height, panicle length, fertile grains panicle^-1, grain yield, straw yield and biological yield. The highest number of total tillers hill^-1, number of effective tillers hill^-1, weight of 1000 grains, grain yield, biological yield and harvest index were found in the crop with 4 seedlings hill^-1. The highest plant height, number of total tillers hill^-1, leaf area, leaf dry weight, effective tillers hill^-1, panicle length, grains panicle^-1, unfilled spikelets panicle^-1, weight of 1000 grains, straw yield, biological yield and harvest index were produced when recommended dose (1.8g) of Urea Super Granules (USG) was applied. Among the three varieties Kataribhog produced higher grain yield (2.90 t ha^-1) compared to other two varieties. The number of seedlings hill^-1 had significant effect on grain yield. The highest grain yield (3.30 t ha^-1) was obtained in four seedlings hill^-1. Between two urea fertilizer levels significantly higher grain yield (3.25 t ha^-1) was obtained from recommended dose (1.8g) of Urea Super Granule (USG) application. The highest grain yield (4.22 t ha^-1) was obtained from the interaction of Kataribhog with six seedlings hill^-1 and recommended dose (1.8g) of USG fertilizer.

Keywords: Variety, Number of seedling hill per hill, Fertilizer, Growth, Yield

Location: Agronomy Field Laboratory, Bangladesh Agricultural University, Mymensingh

Start Date: 31-09-2009

End Date: 21-12-2009

Program Area: Crop-Soil-Water Management

Commodity: Rice

Objectives:

1. To find out suitable variety, number of seedlings hill^-1 and appropriate dose of prilled urea or urea super granules under late transplanted condition for higher yield.

Methodology:

The experiment was conducted at the Agronomy Field Laboratory, Department of Agronomy, Bangladesh Agricultural University, Mymensingh during the period from September to December 2009. The experiment was laid out in three factor randomized complete block design (RCBD) with three replications. Total unit plots were 54. The unit plot size was 10 m² (4m x 2.5m). . The experiment included three rice varieties viz. BRRI Dhan34, Ukunmadhu and Kataribhog, three levels of seedlings hill^-1 viz. 2, 4 and 6 and two recommended doses of urea fertilizer viz. Prilled Urea and Urea Super Granule. The selected land was first opened with power tiller on 15 September 2009. After one week the land was further ploughed and cross ploughed with country plough and followed by laddering on 23 September 2009 to get a good puddled condition. The puddled field was laid out according to the experimental design adopted. The bunds around individual plot were made firm enough to control water movement between plots. Individual plots were prepared by cleaning off weeds and stubble with the help of spade. Puddling and leveling were also done thoroughly before their specified date of transplanting. Final Puddling was completed one day before the scheduled date of transplanting. Chemical fertilizers were applied at the rate of 60 kg P₂O₅, 40 kg K₂O, 60 kg gypsum and 10 kg zinc sulphate ha^-1. The whole amounts of TSP, MP, gypsum and zinc sulphate were applied at the time of final land preparation. Prilled Urea at 80 kg N ha^-1 was top dressed in 3 equal installments at 15, 30 and 45 days after transplanted (DAT) and Urea Super Granule (1.8g) was applied in the middle of 4 hills of two adjacent rows at the time at 15 DAT (Days after Transplanting).The intercultural operations viz. gap filling, weeding, and pest management were done as and when necessary. The soil was kept moist throughout the growth stage. Flood irrigation was given to the field and on the following day (after over night stay) the excess standing water was expelled out from the crop field to kept the soil at moist condition. Data were collected two times before harvest and after harvest of rice. Five hills were randomly selected two weeks after transplanting and marked with bamboo sticks in each plot excluding border rows to record the data on plant height and number of tillers hill^-1 at 15 day intervals beginning on 30 DAT up to harvesting. For weight of dry matter, 2 hills plot^-1 were uprooted at 15-day intervals beginning on 30 DAT up to harvesting. finally data on crop characters, yield components and yield were collected at harvest. Data recorded for different parameters were compiled and tabulated in proper form for statistical analysis. Analysis of variance (ANOVA) was done with the help of computer package MSTAT. The mean differences among the treatment were adjudged by Duncan's Multiple Range test (DMRT).

Source of Information: J. Agrofor. Environ. 4 (2): 177-180, 2010; ISSN 1995-6983

Article Link (Online Journal):

Funding Source:

Total Budget (Tk.) :

Achievement/Findings:

The interaction effect of variety, number of seedlings hill^-1 and urea fertilizer had significant effect on all crop character except number of non effective tillers hill^-1, weight of 1000-grain, Straw yield, and biological yield. The highest grain yield (4.22 t ha^-1) and biological yield (8.64 t ha^-1) were produced when kataribhoh at six seedlings hill^-1 under Urea Super Granule (USG) fertilization application. Kataribhog at two seedlings hill^-1 and Urea Super Granule (USG) combination produced higher plant height (135.23cm), panicle length (28.03cm) and number of fertile grains panicle-1(208.49). Number of total tillers hill^-1 (16.27) and number of effective tillers hill^-1 (13.73) produced highest incase of Ukunmadhu at six seedlings hill^-1 when Prilled Urea was applied. The highest number of non effective tillers hill^-1 (3.93) and straw yield (4.83 t ha^-1) were produced by kataribhog at four seedlings when Urea Super Granule applied. Higher harvest index (54.09%) by BRRI dhan34 at six seedlings hill^-1 incase of Urea Super Granule (USG) was applied. Number of sterile spickelet panicle^-1(47.85) was highest on BRRI dhan34 at four seedlings hill^-1 when Prilled Urea was applied.

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