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Effect of Nitrogen Level and Leaf Cutting Frequency on Foliage and Seed Yields of Coriander

M. MONIRUZZAMAN
Senior Scientific Officer
HRC, Bangladesh Agricultural Research Institute (BARI)

M. M. RAHMAN
Professor
Dept. of Horticulture, Bangabandhu Shekh Mujibur Rahman Agricultural Univeristy (BSMRAU), Salna, Gazipur-1706, Bangladesh

Abstract/ Executive Summary:

A field experiment was conducted at BSMRAU farm, Gazipur to evaluate the effects of four nitrogen levels (0, 40, 80 and 120 kg/ha) and four levels of leaf cutting ( no cutting, one cutting at 30 DAS), two cuttings at 30 & 45 DAS and three cuttings at 30, 45 & 60 DAS ) on three genotypes of coriander (Coriandrum sativum L.) (CS001, CS002 and CS003). The genotype CS003 produced the highest foliage yield (8.92 t/ha) and the genotype CS001 gave the highest seed yield (0.93 t/ha). The maximum foliage and seed yields were obtained from the N application at 80 kg N/ha. The maximum foliage yield (11.21 t/ha) was recorded with the three cuttings, but the highest seed yield was noted with the one cutting (1.06 t/ha). The 80 kg N/ha coupled with three cuttings gave the top most foliage yield while the same rate accompanied with one cutting gave the top most seed yield for all genotypes.

Keywords: Nitrogen, Leaf cutting, Green leaf, Seed yield, Coriander

Location: BSMRAU farm, Gazipur

Start Date: 00-11-2009

End Date: 00-05-2010

Program Area: Crop-Soil-Water Management

Commodity: Coriander

Objectives:

To find out the optimum dose of nitrogen for higher leaf and seed yield and to determine the frequency of leaf cutting in relation to leaf and seed yield of coriander.

Methodology:

The experiment was conducted at the research farm of Bangabandhu Sheikh Mujibur Rahman Agricultural University (BSMRAU), Gazipur (AEZ-28) during November 2009 to May 2010. The experimental field comprised with the Piedmont plain soil having medium loamy to moderately fine texture (sandy clay loam). The soil was poor in organic matter (1.91%) and moderately acidic (pH 5.90). The total N, available P, exchangeable K, available S and B in soil were 0.079%, 30.77 ppm, 0.35 meq/100 g soil, 13.4 ppm and 0.31 ppm, respectively. The experiment was laid out in a split-split plot design with three replications having three genotypes (CS001, CS002 and CS003) in main plots, four nitrogen levels ( 0, 40, 80 and 120 kg/ha) in sub-plots and four levels of leaf cutting (No cutting, one cutting at 30 DAS, two cuttings at 30 and 45 DAS and three cuttings at 30, 45 and 60 DAS) in sub-sub plots. The coriander genotypes were collected from Siddique Bazzar, Dhaka. The unit plot size was 3 x 1 m. The first and the second leaf cutting were done 4 cm above the ground leaving the terminal bud during the third cutting the suitable leaves are cut. The land was fertilized @ 5 t cowdung, 40 kg P, 40 kg K and 20 kg S per hectare. Full amount of cowdung, TSP, MOP and gypsum was added as basal application. One- half of urea was applied during final land preparation and the rest of the urea was applied in three equal installments after each cutting as top dress. The seeds (fruits) were rubbed for separating the two mericarps (seeds) and were soaked in water for 24 hours to enhance germination. Seed were also treated with Bavistin at 2g per kg of seeds before sowing. The seeds were sown in 20 cm apart lines continuously by hand @ 30 kg/ha. Sowing was done on November 9, 2009. First and second weedings were done after 25 and 60 days after sowing, respectively. Plant thinning was done at 25 DAS maintaining 10 cm distance between plants. Irrigation was done at 30, 45, 60 and 85 days after sowing. Malathion @ 1.5 ml/l was sprayed during fruiting stage to reduce the attack of aphid. Harvesting of leaves was done at 30, 45 and 60 days after sowing. Seeds were harvested when half of the fruits on the plant changed from green to brown colour (Singhania et al. 2006). Seeds were dried in the sun to attain 10% moisture. Data were recorded umbels/plant, umbelletes/plant, seeds/umbel, 1000-seed weight (g), stover yield and seed yield (t/ha). Plot yield was converted to per hectare yield. The data were analyzed statistically by MSTAT-C Program and mean comparison was done following the Duncan Multiple Range Test (DMRT).

Source of Information: Bangladesh J. Agril. Res. 40(1): 53-60, March 2015,ISSN 0258-7122

Article Link (Online Journal):

Funding Source:

Total Budget (Tk.) :

Achievement/Findings:

The genotype CS003 produced the highest foliage yield (8.92 t/ha) and the genotype CS001 gave the highest seed yield (0.93 t/ha). The maximum foliage and seed yields were obtained from the N application at 80 kg N/ha. The maximum foliage yield (11.21 t/ha) was recorded with the three cuttings, but the highest seed yield was noted with the one cutting (1.06 t/ha). The 80 kg N/ha coupled with three cuttings gave the top most foliage yield while the same rate accompanied with one cutting gave the top most seed yield for all genotypes.

Knowledge Management: Journal