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Selection of Novel Upland Cotton Cultivars (gossypium Hirsutum L.) by Investigating Fiber Quality and Yield Performance in Multilocation Trials of Bangladesh

M. K. Hasan*
Department of Agricultural Chemistry, Sylhet Agricultural University, Bangladesh

J. Shopan
Department of Horticulture, Zhejiang University, Hangzhou, China

Abstract/ Executive Summary:

Variety selection is the first and perhaps most critical decision of cotton producers. To explore the novel upland cotton cultivar, the present experiment was established at four cotton research farms, located in Rangpur, Dinajpur, Jessore and Gazipur District of Bangladesh during the season-2013-14. Investigations for varietal selection were performed based on evaluating the yield and ginning characteristics of strains. Among the tested strains, seven were promising lines encoded BC-0405, BC-037, JA-054, BC-0188, BC-0236, VN-35 and BC-063. One crossed materials of CDB (Cotton Development Board) encoded was also included, where CB-9, CB-10 and CB-11 were taken as local control. Interestingly, significant differences were obtained among the tested materials for different yield contributing individuals at different locations. Moreover, in combination of four locations data also showed major difference for the trait of number of vegetative braches per plant and node number of first sympodia. The highest amount of seed cotton yield was produced by JA/54 (2046kg/ha) which was followed by BC-037(2041kg/ha) cultivar and the lowest yield obtained from BC-0188 (1684kg/ha). They also produced high amount of lint, their GOT (Ginning out turn) % was moderately high and lint characteristics was medium. Surprisingly these two cultivars also showed well performance in all the locations, which indicates its wider environmental adaptability.

Keywords: Cotton cultivar; Seed cotton, Lint, Ginning out turn, Fuzz.

Location:

Start Date:

End Date:

Program Area: Variety and Species

Commodity: Cotton

Objectives:

The present experiment was desigened to test the yield and quality performance of seven new cotton cultivars under the prevailing conditions of multiplications of Bangladesh through comparing their agronomic traits and ginning characteristics with the control varieties.

Methodology:

Plant materials and experimental design The present experiment was performed at 4(four) Cotton Research Farm, situated in Rangpur, Dinajpur, Jessore and Gazipur of Bangladesh during the year 20013-14. In this experiment 5(five) entries such as BC-0405, BC-037, JA/54, BC-0188 and BC0236 included for investigation. The entry BC-063, and VN-35 were included depending their high yield potentialities that was found in the year 2011-12 through genotypes evaluation. The JA/54 cultivar was included for their better performance at Jagodishpur farm, the center of Bangladesh. The CB-9, CB-10 and CB-11 were taken as local check. The experiment was laid down in Randomized Complete Block Design (RCBD) with 3 (three) replications. Seeds were sown at the date of 25-7-13 to 6-8-13 in different locations. Unit plot size was 10 × 3.6 m and plant spacing was 90cm × 45cm. Two to three water soaked and asataf (fungicide) treated seeds were sown at each hole during planting time. Gap filling and fertilizer managements Gap filling with seeds were done after one to two weeks of initial showing that is at the data of 31-7-13 to 15-8-13. Thinning was performed after 11 days and 21 days of seed emergence. Finally one seedling was kept in one stand. Crop management operations Seed cotton yield and fiber qualities significantly altered by a number of agronomic practices (Saleem et al., 2010). To minimize the alteration of yields and to make the experiments more thoughtful and authenticated, sets of interrelated crop management activities were performed during the period of cultivation. Weeding was performed, two times manually, while mulching between two rows was done by power tiller. At the third week of November and the 1st week of December irrigation water was used due to draught situation. After 33-45 days of sowing first spray of chloropyriphose was applied against sucking pests such as Jassid and Aphid etc. Other three spray of chloropyriphose in combine with pyrithroid were applied to control sucking and chewing (boll worms) pests. In all cases scouting based spray was followed. Damage of spodoptera was severe but drastic control measures by using pheromone trap the insects was kept under control. We also did hand picking and used light trap and zollaghur (molasses) trap for better pest managements and to kill moths and adults of the insects. As a result more or less insect reproduction was stopped which encouraged friendly agroecosystem to some extent. To protect the fungal diseases, tilt, indofil and bavestone were sprayed at seedling and vegetative stage of the cotton plants. Moreover, insect damage and disease incident was keenly observed line wise to make sure for better plant growth. Statistical analysis Data of above agronomic traits were collected from 10 (ten) randomized selected plants from each plot. Data were subjected to Analysis of variance (ANOVA) using statistical data software SPSS v.16. All the data were presented as the mean value for each treatment and calculated protected Least Significant Difference (LSD) values for all applicable traits (Zaman et al. (1982).

Source of Information: International Journal of Biosciences | IJB | ISSN: 2220-6655 (Print), 2222-5234 (Online) Vol. 9, No. 6, p. 177-186, 2016

Article Link (Online Journal): http://dx.doi.org/10.12692/ijb/9.6.177-186

Funding Source:

Budget:

Total Budget (Tk.) :

Achievement/Findings:

Based on deferential analysis using the indices individually or in combinations, it has been concluded that most yield-stable promising cultivar across the environments was JA/54. This showed 6% more seed cotton yield and 11% more lint production than the cheekCB-9 and BC-037 occupied the second position. Although, JA/54 cultivar showed moderate lint characteristics with fuzz grade but finally gives maximum seed cotton yield. As it is important to achieve the optimum but not the maximum quality level, and to meeting the specific purpose and use which allow the satisfactory yields. Therefore, these two lines may be forward to the advanced yield trial and the rest should need further investigation through preliminary yield trial.

Knowledge Management: Journal