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Yield and Quality of Rice as Affected by Molybdenum Applied with Chemical Fertilizers and Organic Matter

P. BALA
Agricultural Studies, Lalmia City College, Gopalgonj, Bangladesh

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

Abstract/ Executive Summary:

A field experiment was conducted at the field laboratory of the Department of Agronomy, Bangladesh Agricultural University, Mymensingh to evaluate the effect of molybdenum (Mo) with recommenced chemical fertilizer and organic matter on yield and quality of rice cv. BRRI dhan 30. Three levels of Mo viz. 0, 100 and 200 ppm were applied with recommended dose of chemical fertilizers (80, 15, 40, 10, 1.5 kg ha-1NPKSZn) and organic matter as both cow dung and compost. Plant height, number of ear bearing tillers hill^-1, straw yield and biological yield were maximum when 100 ppm Mo was applied with chemical fertilizer. Number of total spikelets panicle^-1, grains panicle^-1, nitrogen content, nitrogen uptake in grain and straw, and protein content in grain were recorded better when 100 ppm Mo was applied with cowdung. Those parameters were minimum when 0 ppm Mo was applied with either cowdung or compost or NPK. The best performance was obtained when 100 ppm Mo was applied either with recommended fertilizers or with cow dung/compost. The performance of rice with 200 ppm of Mo was better than no addition of Mo in respect of yield and yield contributing characters.

Keywords: Molybdenum, Quality, Rice, Yield

Location: Agronomy Field Laboratory, Bangladesh Agricultural University, Mymensingh

Start Date: 00-07-2004

End Date: 00-12-2004

Program Area: Crop-Soil-Water Management

Commodity: Fertilizer

Objectives:

To analyze the effects of Mo with recommended fertilizers and organic matter on the yield and quality of rice.

Methodology:

The experiment was conducted at the Agronomy Field Laboratory, Bangladesh Agricultural University, Mymensingh, during the period from July 2004 to December 2004. The soil of the experiment field belongs to Non calcareous Dark Grey Flood Plain Soil under the Sonatola Series of Old Brahmaputra Flood Plain which falls in Agroecological zone-9. The experiment was laid out in a Randomized Complete Block Design (RCBD) with four (4) replications. Layout of the experiment was done with inter-plot spacing of 0.75 m and inter-block spacing of 1.0 m. The unit plot size was 6 m²(3 m X 2 m) and total numbers of unit plots were 36. Row to row and plant to plant spacing were 20 cm and 15 cm, respectively. Rice variety BRRI dhan30 was used in this experiment. The experimental plots were fertilized with 80, 15, 40, 10, 1.5 kg ha^-1 NPKSZn and 0 ppm, 100 ppm and 200 ppm Mo ha^-1, respectively in the form of urea, triple super phosphate, muriate of potash, gypsum, zinc sulphate and ammonium molybdate. The plots or treatments in which organic fertilizer such as decomposed cowdung or farm yard manure (FYM) and compost were applied @ 7 kg plot^-1 and 14 kg plot^-1, respectively. The value of nutrient composition such as NPKS of cowdung and compost were 1.6, 0.2, 3.4, 0.2 and 0.8, 0.05, 0.5 and 0.2, respectively and was subtracted from the original rate of fertilizer. Total amount of the chemical fertilizer without urea were applied as basal dose. Urea was applied as top dressing in three equal splits, at 7 days after transplanting (DAT), 30 DAT and 45 DAT, respectively. The control plots received no organic fertilizer and Mo, but other fertilizers were used as common doses. Thirty three days old seedlings were transplanted on August 9, 2004 and harvested on November 27, 2004 (108 DAT). There was negligible infestation of insect-pests during the crop growth period. Yet to keep the crop growth in normal, basudin was applied at tillering stage @ 17 kg ha-1 while diazinon 60 EC @ 850 ml ha^-1 were applied to control stem borer and rice bug. The grain and straw samples were analyzed for N content following semimicro Kjeldahl procedure. To estimate the protein in grain, grain nitrogen was multiplied by 5.95 (Anonymous, 1980). The result was expressed in percentage. The analysis of variances of various plant characters, nitrogen content and uptake were done with help of computer package M-STAT Program. The mean differences among the treatments were compared by Duncan's Multiple Range Test (DMRT) (Gomez and Gomez, 1984).

Source of Information: J Agric Rural Dev 6(1&2), 19-23, June 2008 ISSN 1810-1860

Article Link (Online Journal):

Funding Source:

Total Budget (Tk.) :

Achievement/Findings:

In conclusion, it was obvious that plants received 100 ppm Mo either with NPK or organic matter showed better performance in terms of yield contributing characters and grain yield. Nitrogen content and up take in grain and straw, were better when 100 ppm or 200 ppm Mo was added with NPK or organic matter either as cow dung or compost. The addition of Mo also influenced protein percentage of grain.

Knowledge Management: Journal