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Effects of Organic and Inorganic Fertilizers on the Growth, Yield and Nitrogen Uptake by BRRI Dhan28

Md Rafiqul Islam
Department of Soil Science, Bangladesh Agricultural University, Mymensingh-2202, Bangladesh.

Aurunima Kanchi Suprova Shawon
Department of Soil Science, Bangladesh Agricultural University, Mymensingh-2202, Bangladesh.

Most Lutfun Nesa Begum
Practical Skill Development Training Department, Proshika, Mirpur-2, Dhaka-1216, Bangladesh.

Azmul Huda
Department of Soil Science, Bangladesh Agricultural University, Mymensingh-2202, Bangladesh and Department of Soil Science, Sylhet Agricultural University, Sylhet-3100, Bangladesh.

Abstract/ Executive Summary:

A study was conducted at the Soil Science Field Laboratory of Bangladesh Agricultural University, Mymensingh during Boro season of 2014 to evaluate the effect of integrated use of manures and fertilizers for maximizing the growth and yield of BRRI dhan28. The experiment was laid out in a randomized complete block design with six treatments and four replications. The treatments include T₀ [Control], T₁ [Soil Test Basis-Chemical Fertilizer], T₂ [(Cowdung) + STB-CF] on IPNS basis, T₃ [(Poultry Manure) + STB-CF] on IPNS basis, T₄ [(Compost) + STB-CF] on IPNS basis, and T₅ [Farmer’s practice]. The maximum grain yield of 4340 kg ha^-1 (95.59% increase over control) and straw yield of 4024 kg ha^-1 (56.42% increase over control) were recorded in T₃ [ (PM) + STB-CF]. The lowest grain and straw yields were found for T₀ (Control) treatment. The N, P, K and S contents and uptake by BRRI dhan28 were profoundly influenced due to combined application of manures and fertilizers. The performance of the treatment T₃ was better than T₁, T₂ and T₄ in producing the yield of grain and straw of BRRI dhan28 although they received the same amount of nutrients. The results indicate that application of fertilizers in combination with poultry manure could be considered more effective in rice production. So, the treatment T₃ can be used for the successful cultivation of BRRI dhan28.

Keywords: Organic, Inorganic fertilizers, BRRI dhan28, Yield, Nitrogen uptake

Location: Soil Science Field Laboratory of Bangladesh Agricultural University, Mymensingh.

Start Date: 00-00-2013

End Date: 00-00-2014

Program Area: Crop-Soil-Water Management

Commodity: Manures, Rice

Objectives:

1. To evaluate the effects of integrated use of manures and fertilizers on the yield and nitrogen uptake by BRRI dhan28.

2. To determine the suitability of different sources of organic materials for using as manures for rice cultivation.

Methodology:

The experiment was conducted at the Soil Science Field Laboratory of Bangladesh Agricultural University, Mymensingh during the Boro season of 2013 - 2014. The study was performed to evaluate the effect of combined use of manures and fertilizers for maximizing the growth and yield of BRRI dhan28. The soil belongs to Sonatala series under the AEZ of the Old Brahmaputra Floodplain. The experimental soil was silt loam in texture having pH 6.3, organic matter 2.05 %, total nitrogen 0.14%, available phosphorus 6.2 mg/kg, exchangeable K 0.068 me/100g soil and available sulphur 12.4 mg/kg. BRRI dhan28, a high yielding boro rice variety of rice was used in this experiment as the test crop. The experiment was laid out in a randomized complete block design (RCBD), where the experimental area was divided into 4 blocks. There were 6 different treatment combinations: T₀ - Control, T₁ - STB - CF (HYG), T₂ - STB - CF (HYG) + CD (5 t/ha) on IPNS basis, T₃ - STB - CF (HYG) + PM (3 t/ha) on IPNS basis, T₄ - STB - CF (HYG) + COM (5 t/ha) on IPNS basis, T₅ - FP. Here, STB = Soil Test Basis; CF = Chemical Fertilizer; HYG = High Yield Goal; OM = Organic matter; PM = Poultry Manure; COM = Compost; FP = Farmers’ practice. Well decomposed cowdung, compost and poultry manure were applied to the plots as per the treatments by mixing with the soil well before 7 days of sowing. The amounts of nitrogen, phosphorus, potash and sulphur fertilizers required per plot were calculated as per the treatments. Cowdung, poultry manure, and compost were applied before one week of transplanting. The full dose of TSP, MOP and Gypsum was applied one day before transplanting. Urea was applied in three equal splits. The first split of urea was applied after 15 days of transplanting. The second split was applied as top dressing after 30 days of transplanting i.e at maximum tillering stage. The third split was applied at panicle initiation stage. Thirty day old seedlings were carefully uprooted from a seedling nursery and transplanted on the experimental plots maintaining plant spacing of 20 cm x 20 cm. Three seedlings were transplanted in each hill. Intercultural operations such as irrigation and weeding were done as and when necessary. The crop was harvested at full maturity. Grain yield was recorded on 14% moisture basis and straw yield on sundry basis. Five hills were randomly selected from each plot at maturity to record the growth and yield contributing characters. Grain and straw samples were analyzed for N content following the method outlined by Bremner and Mulvaney. The N uptake by grain and straw was calculated from its content and yield data using the equation, Nitrogen uptake = [ Nitrogen content (%) x Yield ( kg ha^-1 )]/100. All the data were statistically analyzed by F - test and the mean differences were ranked by DMRT at 5% level.

Source of Information: Res. Agric., Livest. Fish.3(1): 99-104, April 2016, ISSN: 2409-0603

Article Link (Online Journal): DOI: http://dx.doi.org/10.3329/ralf.v3i1.27863

Funding Source:

Budget:

Total Budget (Tk.) :

Achievement/Findings:

It can be concluded that integrated use of manures and fertilizers improves rice yield to a significant extent than the single application of chemical fertilizers. Based on the overall results of the study, the application of poultry manure @ 3 ton/ha with chemical fertilizers on IPNS basis can be recommended for obtaining the maximum yield of BRRI dhan28 in Boro rice production with some further trials.

Knowledge Management: Journal