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Performance of Different Green Manuring Crops in Bangladesh

Israt Jahan Irin
Department of Agronomy, Khulna Agricultural University, Bangladesh

Parimal Kanti Biswas
Department of Agronomy, Sher-e-Bangla Agricultural University, Dhaka-1207, Bangladesh

Abstract/ Executive Summary:

An experiment was conducted at Sher-e-bangla Agricultural University during May to July, 2016 to examine the morpho-physical potentiality of eight green manure species and these species are viz. Sesbania aculeata, Sesbania rostrata, Crotalaria juncea, Vigna unguiculata, Vigna mungo, Vigna radiata, Leucaena leucocephala and Mimosa pudica. Leaves number, biomass production and nodulation are an important character of any green manuring crops as these crops are very potential for increasing soil fertility after incorporation. The growth habits of these species were studied from 15 DAS to 45DAS whereas dry matter/plant and nodulation data were taken from 25 DAS to 50DAS. At 45DAS, Sesbania aculeata, Sesbania rostrata and Vigna unguiculata shown 53% to 149% higher plant height compared to Vigna mungo, although C. juncea performed better at 30DAS compared to V. unguiculata. Again, C. juncea along with S. rostrata and S. aculeata gave the highest fresh biomass (24% to 72%), dry biomass (2.6t/ha to 5.25t/ha), dry matter plant^-1 (60% to 83%) and nodulation compared to rest green manures at 45DAS whereas V. unguiculata produced higher dry matter plant^-1 at 20DAS but later it declined insignificantly at 50DAS.The lowest performance was observed from V. mungo followed by V. radiata and M. pudica. It was shown that S. rostrata, S. aculeata, C. juncea, V. unguiculata and L.leucocephala performed better regarding biomass, dry matter and nodule production.

Keywords: Green manuring, Dry matter, Nutrient balance, Fresh biomass, Dry biomass

Location: Sher-e-bangla Agricultural University, Dhaka, Bangladesh

Start Date: 00-05-2016

End Date: 00-07-2016

Program Area: Crop-Soil-Water Management

Commodity: Manures

Objectives:

To find out the better green manuring crops out of eight green manuring crops in relation to plant height, biomass, dry matter and nodule production.

Methodology:

The experiment was conducted at Sher-e-bangla Agricultural University from May to July, 2016. Eight different species viz. Sesbania aculeata,Sesbania rostrata, Crotalaria juncea, Vigna unguiculata, Vigna mungo, Vigna radiata, Leucaena leucocephala, Mimosa pudica were selected as green manuring crop species. The leaves of these plants are easily decomposable and reported to contain more protein, and rich sources of nitrogen and phosphorus when used as green manure. The experiment was laid out in a Randomized Complete Block Design with three replications. There were eight different green manuring crops along with three replications. The total number of experimental units was 24 (8 x 3). The size of each plot was 17.5 m (5m x 3.5m). The replications were separated from one another by 1 m spacing. Spacing between plots was 80 cm. The experimental plots were fertilized with the recommended doses of 20-17.6-24.9 kg N, P and K ha^-1 (BARI, 2008) from their sources of Urea, TSP and MoP. The whole amount of urea and muriate of potash, triple superphosphate were applied at the time of final land preparation and as basal dose. The seeds of different crops were sown after final land preparation following their recommended seed rate. The collected data were analyzed statistically by using the Statistic-10 computer package. The mean comparisons of all parameters were done with Tukey’s W-procedure (Gomez and Gomez, 1984).

Source of Information: Res. Agric., Livest. Fish.8(1): 25-31, April 2021

Article Link (Online Journal): DOI: https://doi.org/10.3329/ralf.v8i1.53264

Funding Source:

Budget:

Total Budget (Tk.) :

Achievement/Findings:

The plant which produces more leaves, fresh and dry biomass could be potential to increase soil fertility after incorporation. The results revealed that the highest value of plant height, number of leaf, nodule and biomass yield were found from S. rostrata, S. aculeatea,V. unguiculata,L. leucocephala and C. juncea and the lowest from V. radiata followed by V. mungo, M.pudica at 45 DAS. These aforementioned species can be cultivated in our land (as the land remained fallow for two months after boro harvesting) for increasing soil fertility through in situ incorporation.

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