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Minimization of Post-harvest Losses of Tomato in the High BARInd Tract

Md. Shafiqul Islam
Senior Scientific Officer
OFRD, BARI , Rajshahi

Abstract/ Executive Summary:

The experiment was conducted at the FSRD site office room, Kadamshahar, Rajshahi in High Barind Tract during the rabi season of 2008-2009 with a view to observe the effect of postharvest treatments on physical change of early tomato in High Barind area. Six postharvest treatments were- T1: Grading and store at 85 to 90% relative humidity (RH), T2: Washing of tomato with sodium hypo-chloride solution (0.02%), T3: Treating with Baiclean (5-10 min.), T4: T1+ T2, T5:T1+ T3andT6: Control (Farmers’ practice) used in the experiment. It was found that the quality of fruits were decreased with the advancement of storage duration and lost their marketability at the later stage. Among the treatments used, grading and store at 85 to 90% RH showed better performance up to 24 days after storage (DAS) and washing of tomato with sodium hypo-chloride solution (0.02%) showed better at the later of storage period in relation with percent weight loss and marketable fruits of tomato. But the farmers practice showed poor performance during storage period.

Keywords: Post-harvest loss, Tomato, High barind tract

Location: FSRD site, Kadamshahar, Rajshahi

Start Date: 27-08-2008

End Date: 05-01-2009

Program Area: Postharvest and Agro-processing

Commodity: Tomato

Objectives:

To minimize the post-harvest losses of early tomato in High Barind area

Methodology:

The experiment was carried out at the FSRD site, Kadamshahar, Rajshahi in Barind Tract during rabi season of 2008-09. The six post-harvest treatments such as, T1: Grading and store at 85 to 90%RH, T2: Washing of tomato with sodium hypo-chloride solution (0.02%), T3: Treating with Baiclean (5-10 min.), T4: T1+ T2, T5:T1+ T3, T6: Control (Farmers’ practice).The seed was sown in seed bed on 27 August 2008. The 29 days old seedlings were transplanted on 26 September 2008.Recommended fertilizer were applied. The next MP and urea were used in two installment after 25 and 40 days after planting, respectively. Tomato hybrid variety Surakha was used as atest crop. Irrigation was applied three times during the crop-growing period. Insecticide (Admire @ 0.5 ml/L water) and fungicide (Ridomil Gold @ 2g/L water) were sprayed four times for controlling insect and diseases of tomato plant. Weeding and other intercultural operations were done as per need for better growth and development of the crop plant.The green mature tomato was harvested at afternoon on 5 January 2009. The main experiment was set at FSRD office room as per different treatments on the 5 January 2009. For each treatment, 5 kg of green mature and uniform tomato fruits was used. The number of tomato fruits of 5 kg for different treatments was counted separately. Relative humidity for specific treatment was controlled by hanging of water soaked gunny bag and closing the window as well as door in the room as was need. After washing by chemical, tomato fruits were air dried and stored on the floor of the room. Data on changes in different physical characters viz., % weight loss and % marketable fruits were recorded. Collected data were collected and statistically analyzed.

Source of Information: Annual Research Report, 2008-09 published by OFRD, BARI

Article Link (Online Journal):

Funding Source:

Total Budget (Tk.) :

Achievement/Findings:

At 6 DAS the percent of weight of tomato ranged from 1.67 to 4.28%. The lowest percent of weight loss of tomato fruits (1.67%) was observed from the treatment grading and store at 85-90% RH (T1) followed by combination grading and store at 85-90% RH and washing with Sodium hypochloride solution (T4). The control treatment showed maximum percent of weight loss (4.12%). Similar trend of results were found at 12, 18 and 24 DAS. At 30 DAS the lowest percent of weight loss (18.60%) was found from washing tomato with NaHCl solution (T2) and this treatment showed lower percent of weight loss both at 36 DAS (41.32%) and 42 DAS (59.54%).These can be explained by the facts that at the beginning of the T1 treatment the relative humidity was higher, so lower respiration and dehydration occurred resulted to lower percent of tomato weight loss found. Post-harvest treatments showed significant variations at 24, 30, 36 and 42 DAS in relation to percent of marketable fruits. At 24 DAS maximum percent of marketable fruits was found in grading and store at 85 to 90%RH (T1) (93.92%) followed by washing of tomato with sodium hypochloride solution (T2) and minimum percent of marketable fruits was observed in farmers practice (74.72%). Although significant different was not showed at 6, 12 and 18 D0AS but similar results of 24 DAS were recorded at the above mentioned DAS’s. At both the 36 and 42 DAS, the highest percent of marketable tomato fruits were recorded when the fruits were washed with NaHCl solution and lowest at control treatment. Washing tomato with NaHCl solution (T2) showed lower percent of weight loss both at 36 DAS (41.32%) and 42 DAS (59.54%) contributed to higher percent of marketable fruits

Knowledge Management: Report/Proceedings