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Stem Amaranth Yield in Response to Organic Manuring

M. Y. Miah
Department of Soil Science, BSMRAU, Gazipur-1706, Bangladesh

P. K. Roy
Department of Soil Science, BSMRAU, Gazipur-1706, Bangladesh

M. S. Islam
Department of Soil Science, BSMRAU, Gazipur-1706, Bangladesh

K. I. Fazal
Department of Agricultural Chemistry, SAU, Dhaka-1207, Bangladesh

Abstract/ Executive Summary:

Field investigations are important tools for confirmation of the effectiveness of the organic manures on crop yield. As different N sources, this work presents a comparative study of the effects of urea, cow dung and poultry manure on plant height, stem length and diameter, leaf length, breadth and number accompanied with the fresh weight of plant, stem, leaf coupling stem leaf ratio and gross yield of stem amaranth (Amaranthus tricolor Var. BARI Data 1). With an imposition of eight treatments, a field study was conducted at the farm of BSMRAU campus, Gazipur during February-April, 2007 in a Randomized Complete Block Design (RCBD). Treatments were control and seven N sources namely, urea (107 kg N ha^-1), cow dung (23.75 t ha^-1), poultry manure (9.3 t ha^-1), half cow dung and half urea, half poultry manure and half urea, three fourth cow dung and one fourth urea and three fourth poultry manure and one fourth urea, respectively with four replications ensuring the 107 kg N ha^-1 supply from all sources of N used. Compared with cow dung and poultry manure, urea resulted in higher plant height, broader stem length and diameter, more fresh weight of plant, stem and leaf accompanied with maximum gross yield. However, data on the studied parameters varied significantly (p< 0.05). So cow dung and poultry manure applied at 23.75 t ha^-1 and 9.3 t ha^-1, respectively were compatible to urea as N source for stem amaranth production.

Keywords: Cow dung, Poultry manure, Stem amaranth yield and urea.

Location: BSMRAU campus, Gazipur, Bangladesh

Start Date: 00-02-2007

End Date: 00-04-2007

Program Area: Crop-Soil-Water Management

Commodity: Amaranth

Objectives:

1. To find the contribution of cow dung and poultry manure, on plant height, stem length and diameter, leaf length, breadth and number accompanied with the fresh weight of plant, stem, leaf, stem-leaf ratio and gross yield of stem amaranth compared to urea.

Methodology:

The study was conducted at the farm of BSMRAU campus, Gazipur, Bangladesh during February-April, 2007 in the agro-ecological zone (AEZ 28) of Modhupur tract representing shallow red brown terrace soil. The soil characters of the experimental site were silty clay loam having a pH (5.5), total nitrogen (0.054%) and organic matter (1.38%). Physico-chemical of the used cow dung were pH (7.1), total nitrogen (0.82%) and organic carbon (26.52%) and those of the poultry manure were pH (6.1), total nitrogen (1.2%) and organic carbon (40.5%), respectively. The experiment was laid out in a Randomized Complete Block Design (RCBD) comprising the treatment combinations T₁ (cow dung, poultry manure, urea), T₂ (urea), T3 (cow dung), T₄ (poultry manure), T₅ (50% cow dung + 50% urea), T₆ (50% poultry manure + 50% urea), T₇ (75% cow dung + 25% urea), and T₈ (75% poultry manure + 25% urea) and replicated four. Opened with a tractor, the land was ploughed and cross-ploughed for several times with a power tiller followed by laddering to bring the soil under good tilth conditions. The amounts of N (107 kg ha^-1) were supplied from cow dung, poultry manure and urea, respectively. While those of P, K, S and Mo at 23.28, 52, 5.82 and 1 kg ha^-1 were applied from TSP, MP, gypsum and sodium molybdate, respectively. However, cow dung, poultry manure, TSP, gypsum and sodium molybdate were applied during final land preparation. In contrast, urea and MP were top dressed at two equal installments at 15 and 35 days after sowing (DAS), respectively. The prepared block consisted of 32 plots with a unit plot size 6 m² that accommodated 20 plants maintained at row to row and plant to plant distances of 20 cm and 15 cm, respectively. To check insect attack, Malathion 57 EC was applied at 2mL/L fortnightly. Irrigations were given by watering cane if and when needed. Data on plant height and weight, stem length, diameter and weight, leaf weight, stem-leaf ratio and gross yield of stem amaranth were recorded from eight plants being randomly selected from each plot encompassing the avoidance of boarder effect and soil properties and statistical analyses were performed.

Source of Information: J. Environ. Sci. & Natural Resources, 6 (2): 19 -23, 2013; ISSN 1999-7361

Article Link (Online Journal):

Funding Source:

Total Budget (Tk.) :

Achievement/Findings:

Compared with cow dung and poultry manure, urea resulted in higher plant height, broader stem length and diameter, more fresh weight of plant, stem and leaf accompanied with maximum gross yield. However, data on the studied parameters varied significantly (p< 0.05). So cow dung and poultry manure applied at 23.75 t ha^-1 and 9.3 t ha^-1, respectively were compatible to urea as N source for stem amaranth production.

Knowledge Management: Journal