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Response of Integrated Fertilizer and Weed Management on Weed Occurrence and Growth Traits of Aromatic Boro Rice

Purnendu Roy
Department of Agronomy, Bangladesh Agricultural University, Mymensingh 2202, Bangladesh

Md. Abdur Rahman Sarkar
Department of Agronomy, Bangladesh Agricultural University, Mymensingh 2202, Bangladesh

Newton Chandra Paul
Department of Agronomy, Khulna Agricultural University, Khulna, Bangladesh

Kallyan Kanty Saha
Department of Agronomy, Bangladesh Agricultural University, Mymensingh 2202, Bangladesh

Swapan Kumar Paul
Department of Agronomy, Bangladesh Agricultural University, Mymensingh 2202, Bangladesh

Abstract/ Executive Summary:

An experiment was conducted at the Agronomy Field Laboratory, Bangladesh Agricultural University, Mymensingh to study the effect of integrated fertilizer and weed management on the growth performance of aromatic Boro rice (cv. BRRI dhan50). The experiment comprised six fertilizer managements viz., control (no manures and no fertilizers), recommended dose of inorganic fertilizers (i.e. Urea, TSP, MoP, Gypsum, ZnSO₄ @ 250, 120, 120, 100, 10 kg ha^-1, respectively), 50% of recommended dose of inorganic fertilizers + cowdung @ 5 t ha^-1, 75% of recommended dose of inorganic fertilizers + cowdung @ 5 t ha^-1, 50% of recommended dose of inorganic fertilizers + poultry manure @ 2.5 t ha^-1, and 75% of recommended dose of inorganic fertilizers + poultry manure @ 2.5 t ha^-1 and four weed managements viz., control (no weeding), pre-emergence herbicide, Panida 33 EC @ 2.5 l ha^-1 + one hand weeding at 35 DAT, post-emergence herbicide, Granite 240 SC @ 93.70 ml ha^-1 + one hand weeding at 35 DAT, pre-emergence herbicide, Panida 33 EC @ 2.5 l ha^-1 + post-emergence herbicide, Granite 240 SC @ 93.70 ml ha^-1. The experiment was laid out in a factorial randomized complete block design with three replications. Growth traits of aromatic Boro rice (cv. BRRI dhan50) were significantly influenced by integrated fertilizer and weed management. Plant height, number of tillers hill^-1, total dry matter, leaf area index (LAI) and crop growth rate (CGR) gave their highest values in 75% of recommended dose of inorganic fertilizers and poultry manure @ 2.5 t ha^-1 along with pre-emergence herbicide, Panida 33 EC @ 2.5 l ha^-1 + post-emergence herbicide, Granite 240 SC @ 93.70 ml ha^-1 while their corresponding lowest values were found in control. So it can be concluded that, the interaction of 75% of recommended dose of inorganic fertilizers and poultry manure @ 2.5 t ha^-1 along with pre-emergence herbicide (Panida 33 EC @ 2.5 l ha^-1) + post-emergence herbicide (Granite 240 SC @ 93.70 ml ha^-1) appears as the promising combination in respect of growth performance of aromatic Boro rice (cv. BRRI dhan50).

Keywords: Aromatic Boro rice, Growth, Integrated fertilizer, Herbicides, Weed management

Location: Agronomy Field Laboratory, Bangladesh Agricultural University, Mymensingh

Start Date: 00-12-2014

End Date: 00-05-2015

Program Area: Crop-Soil-Water Management

Commodity: Fertilizer, Weed management, Rice

Objectives:

To evaluate the effects of integrated fertilizer and weed management on the growth performance of aromatic Boro rice (cv. BRRI dhan50).

Methodology:

An experiment was conducted at the Agronomy Field Laboratory, Bangladesh Agricultural University (24° 75' N latitude and 90° 50' E longitude and at an altitude of 18 meter above the sea level), Mymensingh during the period from December 2014 to May 2015 to study the effect of integrated fertilizer and weed management on the growth performance of aromatic Boro rice (cv. BRRI dhan50). The experimental site belongs to the Sonatola series of the dark grey floodplain soil type under Old Brahmaputra Floodplain Agro-Ecological Zone (AEZ-9). The field was a medium high land with well drained siltyloam texture having pH 6.5 and 1.29% organic matter content. The experiment comprised six fertilizer managements viz., control (no manures and no fertilizers), recommended dose of inorganic fertilizers (i.e. Urea, TSP, MoP, Gypsum, ZnSO₄ @ 250, 120, 120, 100, 10 kg ha^-1, respectively), 50% of recommended dose of inorganic fertilizers + cowdung @ 5 t ha^-1, 75% of recommended dose of inorganic fertilizers + cowdung @ 5 t ha^-1, 50% of recommended dose of inorganic fertilizers + poultry manure @ 2.5 t ha^-1, and 75% of recommended dose of inorganic fertilizers + poultry manure @ 2.5 t ha^-1 and four weed managements viz., control (no weeding), pre-emergence herbicide, Panida 33 EC + one hand weeding at 35 DAT, post-emergence herbicide, Granite 240 SC + one hand weeding at 35 DAT, pre-emergence herbicide, Panida 33 EC + post-emergence herbicide, Granite 240 SC. The experiment was laid out in a factorial randomized complete block design with three replications. Healthy seeds of BRRI dhan50 rice were collected from the Bangladesh Rice Research Institute, Joydebpur, Gazipur. The nursery beds were puddled with country plough, cleaned and leveled with ladder. Then the sprouted seeds were sown in the nursery beds on 07 December 2014. At the time of final land preparation, respective unit plots were amended with organic and inorganic fertilizers according to treatment specification. Urea was top dressed in three equal splits at 15, 35 and 55 DAT (panicle initiation stage). Full dose of triple super phosphate, muriate of potash, gypsum and zinc sulphate were applied at final land preparation. Thirty five-day old seedlings were trans- planted on 10 January 2015 in the well puddled plot with a spacing of 25 cm × 15 cm and two-seedling hill^-1.

Source of Information: Archives of Agriculture and Environmental Science 5(3): 337-346 (2020)

Article Link (Online Journal): https://doi.org/10.26832/24566632.2020.0503015

Funding Source:

Budget:

Total Budget (Tk.) :

Achievement/Findings:

From the present study it can be concluded that application of 75% of recommended dose of inorganic fertilizers and poultry manure @ 2.5 t ha^-1 along with pre-emergence herbicide, (Panida 33 EC @ 2.5 l ha^-1) + post-emergence herbicide (Granite 240 SC @ 93.70 ml ha^-1) may be used to boosting the growth performance of aromatic Boro rice (cv. BRRI dhan50).

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