Granola Variety Research Articles

Aplikasi Streptomyces sp. ASR 67 dan Pupuk Organik Cair dalam Mengendalikan Penyakit Layu Fusarium oxysporum dan Pemacu Pertumbuhan Tanaman Kentang (Solanum tuberosum L.) Varietas Granola

Demand for the Granola variety of potatoes continues to increase, but its productivity is not yet sufficient for market needs. This is due to the wilt disease attack on potatoes caused by the fungus Fusarium sp., thereby reducing potato productivity. The aim of this research was to determine the use of liquid culture of Streptomyces sp. ASR 67 and liquid organic fertilizer as an organic anti-fungal in controlling wilt disease caused by Fusarium oxysporum on potato plants (Solanum tuberosum L.). The research was carried out using a Randomized Group Design (RAK) method using five treatments. Each treatment was repeated five times and each repetition used one potato plant. Treatment was given by watering the potato growing medium for 30 days, which was done every three days. The results showed that administration of liquid culture of Streptomyces sp. ASR 67 10% combined with liquid organic fertilizer (1:9) was able to increase plant growth with the parameters of height, number of leaves, number of stems, weight of tubers significantly, while POC 2% and Streptomyces sp. ASR67 (1:1) is able to reduce the incidence of wilt disease best.

Analisis Perbandingan Usahatani Kentang Varietas Granola dan Varietas Cipanas di Desa Sungai Lintang Kecamatan Kayu Aro Barat Kabupaten Kerinci

The aims of this study were: (1) To determine the characteristics of potato farmers of the Granola variety and Cipanas variety in Sungai Lintang Village, Kayu Aro Barat District; (2) To find out the difference in potato production, total costs, receipts, income, and profits of the Granola variety and the Cipanas variety in Sungai Lintang Village, Kayu Aro Barat District. The method used in this research is a quantitative descriptive method. Based on the results of the study, it was found that : This research was conducted from 28 August – 28 September 2022 with a total sample of 90 potato farmers of the Granola variety and 45 potato farmers of the Cipanas variety. Based on the results of the study, it was found that: (1) Characteristics of potato farmers in Sungai Lintang Village include: There are 2 age groups with the same frequency, namely between 23-29 and 44-50 years old as many as 23 people (25.55%) for Granola Variety potato farmers, while the most Cipanas Potato Farmers are 37-43 years old as many as 15 people (26.66%). The experience of farming the most potato farmers is between 23-30 years as many as 35 people (38.89%) for the Granola variety, while the potato farmers for the Cipanas variety are 20 people (44.44%). The highest level of educated average was 40 people (44.44%) with high school educated average for Granola variety potato farmers and 21 people (46.66%) with junior high school education for Cipanas variety potato farmers. The largest area of land cultivated by potato farmers with a land area of 0.25 – 0.46 Ha was 74 people (82.22%) potato farmers of the Granola variety and 42 people (93.33%) potato farmers of the Cipanas variety. The highest number of dependents of the potato farming families, between 3-4 for the Granola variety potato farmers, was 66 people (73.33%) and 36 people (80.00%) for the Cipanas variety potato farmers; (2) There are differences in production, total costs, revenues, and profits for potato farming of the Granola variety and the Cipanas variety in Sungai Lintang Village; (2) There are differences in production, total costs, revenues, and profits for potato farming of the Granola variety and the Cipanas variety in Sungai Lintang Village; (3) There is no difference in income for potato farming of the Granola variety and the Cipanas variety in Sungai Lintang Village. Based on the results of the study, the researchers suggest that farmers should focus more on planting the Granola Variety potatoes, because economically the production is higher, and the profits are also greater. while the total costs incurred for the Granola variety were less than the Cipanas variety

Effect of Coconut Water and Benzyl Adenine with Different Concentrations on Potato Tissue Culture (Solanum tuberosum L.) Var. Granola

This study aimed to determine the effect of giving coconut water and the right concentration of benzyl adenine in MS media for potato tissue culture of Granola variety. The study was carried out from November to January 2022, in the Plant Tissue Culture Laboratory of the Faculty of Agriculture, Pattimura University, Ambon. This study used a 2-factor completely randomized design (CRD); the first factor was the concentration of coconut water 0 with 100 ml/l, and the second factor was the concentration of BA consisting of 0.1,2,3,4 mg/l. The study was conducted with 7 replicates and each replication consisted of 5 explants in each culture bottle, so that there were 350 cultures as the unit of observation. The variables observed in this study included the number of shoots, the number of internodes, the number of branches, and the number of roots per plantlet. The results showed that the concentration of coconut water 0 and 100 ml/l had an effect on the number of internodes and the number of roots at 4 weeks after planting. Benzyl adenine at 0, 1, 2, 3 and 4 mg/l had an effect on the variable number of shoots at 8 WAP and the number of internodes at 2 - 8 WAP; which also applies to the number of roots. Whereas, the interaction between both factors affected the number of internodes at 4, 6, and 8 weeks, which also applies to the number of roots.

Expert System for Detecting Diseases of Potatoes of Granola Varieties Using Certainty Factor Method

The low productivity of potatoes is caused by many factors, including the very low quality of the seeds used, poor storage, climate, capital, limited farmer knowledge, and attacks by plant-disturbing organisms, especially diseases. Not only that, many farmers are still unfamiliar with the various diseases that can attack potato plants, or their knowledge about potato plant diseases is incomplete. This study aims to design and develop an expert system web-based application technology using the Certainty Factor (CF) method to detect potato disease symptoms. The CF method defines a measure of the capacity of a fact or provision to express the level of an expert's belief in a matter experienced by the concept of belief or trust and distrust or uncertainty contained in the certainty factor. The results showed that the CF method could function optimally in detecting potato plant diseases which can help farmers based on the symptoms that appear with an accuracy value of 94%.

Analisis Faktor-faktor Produksi Yang Mempengaruhi Pendapatan Petani pada Usahatani Kentang Varietas Granola di Probolinggo

The purpose of this study is to determine the factors of production that affect the income of farming businesses. The factors of production used are the cost of production used, land area and labor use. The data of this study were carried out in a primary and secondary manner. Primary data was conducted by interview with Granola Potato farmers in Sumber District, Probolinggo Regency while secondary data was obtained from related agencies. The data analysis method used uses quantitative descriptive methods. The results obtained from this study are (1) The total cost with the average production of potato harvests of 19,000 kg is Rp.57,205,000 generated by the Granola variety potato farming income of Rp.105,295,000. (2) Variables of arable land area (X1) and labor (X3) partially affect positively and significantly affect the income of Granola Potato farmers. Meanwhile, the variable cost of production (X2) has a negative and insignificant effect. (3) Variables of arable land area (X1), production costs (X2) and labor (X3) simultaneously have a positive and significant effect on the income of Granola Potato farmers in Sumber District, Probolinggo Regency
 Keywords: Production factors: income: Granola potato farmers

Effect of Different Soaking Pre-treatments on Quality of Potato Chips Granola Variety (Solanum tuberosum L.)

Potato chips are one of the snacks flavored by the public. This study aimed to determine the effect of soaking pre-treatment on the quality of Granola potato chips. The research was conducted at the Postharvest Laboratory of BPTP South Sulawesi from June to December 2017. The experimental design of RAL was carried out with 3 replications with 6 immersion treatments, namely in plain water, 0.5% Ca(OH)2 solution, 1% Ca(OH)2, Na2S2O5 0.5%, 1% Na2S2O5, 0.5% CaCl2 and 1% CaCl2. The results showed that the chemical and organoleptic characteristics were significantly different between all treatments. The best or the most preferred treatment by the panelists was potato chips soaked in 1% CaCl2 solution with a yield of 20.47%; moisture content 3.80%, 11.79% fiber, 34.79% fat, 30.24% starch, 2.5% ash, and the level of color preference (score 4.80), aroma (score 5.00), texture (score 4.60) and overall acceptance (score 4.85).

Potato (Solanum tuberosum L.) Varieties Improvement in Kerinci, Jambi

Potato is the main vegetable commodity cultivated by farmers in Kerinci Regency and has been supported by appropriate agro-ecosystems, the availability of land areas, labor and market opportunities as well as government endowment. In general, farmers in every season have not fully implemented cultivation technology recommendations. This paper aims to describe the growth and productivity improvement of potato varieties in Kerinci, Jambi. The activity was carried out in Tanjung Bunga Village, Kayu Aro District, Kerinci Region during wet season 2018, involving 3 cooperative farmers and a land area of 0.25 ha which was planted with two varieties namely Granola and Medians. The results showed that the Medians variety gave a higher number of tubers than the Granola variety, but a large number of tubers was obtained from the Granola variety. Therefore, the Granola variety provided a heavier yield of 17.08 kg or equivalent to 22.775.5 kg/ha, while the Medians was only 12.50 kg or 17.862.25 kg/ha. This study was also found three main pests that occurred ie, leaf-miner fly, armyworm, and tuber-miner, whereas late blight disease was caused by Phytophthora infestans simultaneously infecting both varieties. However, conducting the demonstration plots in this season, the Granola variety was more resistant to disease than the Medians variety.

KERAGAAN TANAMAN KENTANG (Solanum tuberosum L.) VARIETAS GRANOLA AKIBAT PERLAKUAN PUPUK ANORGANIK

Potato plants are one of the supporting commodities for the food diversification program because they have a high protein content. In addition, the potato plant is a strategic commodity in the supply of foodstuffs to support food. The need for potatoes is increasing, due to population growth and increasing public awareness of nutrition and the widespread use of potato production for various foodstuffs, foodstuffs. The aim of this research is to effect of NPK dosage fertilizer (15:15:15) on growth and yield. potato (Solanum tuberosum L.) Granola variety and to get the NPK dosege fertilizer (15:15:15) which is the NPK dosege fertilizer (15:15: 15) which is obtained and the yield of potato (Solanum tuberosum L.) granola variety. The experiment was conducted in Sukamenak Village RT 007 RW 018 Pangalengan Village, Pangalengan District, Bandung Regency, West Java Province. With an altitude of 1,400 meters above sea level (m asl). Rainfall 2,844 mm/year including type C2 rainfall based on Oldeman's classification (1979). Andisol soil type with a pH of 6.8. The experiment was carried from September until December 2021. The research method used was a randomized block design (RBD) consisting of six treatments and four replications. NPK fertilizer dosage (15:15:15) treatments are as follows: A (0 kg/ha), B (800 kg/ha), C (900 kg/ha), D (1000 kg/ha), E (1100 kg/ha) and F (1200 kg/ha). The results showed that giving a dosege 800 kg/ha of NPK fertilizer (15:15:15) had a better effect on plant height, number of leaves and tuber weight per plot.

Population and attack intensity of Leaf Sucking pests during plantation initiation of three white potato (Solanum tuberosum L.) varieties in medium latitude, East Lombok

Potato (Solanum tuberosum L.) is increasingly important crop in Indonesia. Current potato plantation in Indonesia is mainly undertaken in high land areas. However, limited availability of suitable areas limits the production, and therefore extension of production to a lower latitude is needed. Successful plantation in medium latitude may include selection of suitable variety and management of major potato pests. The aim of this investigation was to find out the species of Leaves Sucking pest of three white potatoes (Solanum tuberosum L.) and its population and attack intensity in medium latitude., East Lombok. The method used in this research is descriptive method with survey technique and data collection in the field. The results showed that five species of leaf sucking pests obtained during the plantation, i.e. Bemicia tabaci, Aphid spp., Thrips palmy, Planococcus sp., and Tetranycus spp. Bemicia tabaci, Aphid spp., Thrips palmy, and Planococcus sp were observed in all varieties while Tetranycus spp was obatined in Granola variety only. In addition, the highest population and attack intensity of sucking pest was found in McRusset variety at age 9 weeks after planting (wap), followed by Bliss and Granola variety. In all potato varieties, the dominance of leaf-sucking pests was Aphids spp. with abundance equal to 77.36%, 78.70%, and 83.81% for Blis, McRusset and Granola varieties, respectively.

Characterization of Bacillus spp. from the rhizosphere of potato Granola varieties as an antibacterial against Ralstonia solanacearum

Abstract. Prihatiningsih N, Arwiyanto T, Hadisutrisno B, Widada J. 2020. Characterization of Bacillus spp. from the rhizosphere of potato Granola varieties as an antibacterial against Ralstonia solanacearum. Biodiversitas 21: 4199-4204. Ralstonia solanacearum is one of the important wilt pathogens that significantly decreased potato yields in Indonesia. One of the strategies to control wilt disease is the use of Bacillus sp. that isolated from potato rhizosphere. Bacillus sp. is an antagonist against some phytopathogenic fungi and bacteria. The objectives of the study were to identify 5 strains of Bacillus spp. (B46, B209, B211, B298, and B315) that is capable of suppressing the growth of R. solanacearum. Experimental assays were performed to determine the growth inhibition of R. solanacearum by culturing in a two-layer medium. The identification of Bacillus spp. was performed based on physiological and biochemical characters and molecular identification. Results showed that all of Bacillus spp. are capable of suppressing the growth of R. solanacearum. B. subtilis B315 isolate was the most effective biocontrol agent in inhibiting R. solanacearum growth by a bacteriostatic mechanism. All Bacillus spp. have similarities in physiological and biochemical characters. Based on the molecular analysis, Bacillus sp. B46, B209, B211, and B298 were homologous to B. subtilis subspecies spizizeni RRLKE2, whereas Bacillus sp. B315 was homologous to B. subtilis strain WIFD5.

Callus Induction and Virus Free Potato Mini-Tuber Production through Meristem Culture

The experiments were conducted with a view to establish a protocol for virus free mini-tubers production, in vitro, using potato meristem as explant, collected from potato sprouts of three popular potato varieties Diamant, Cardinal, Granola. In the present study four levels of GA3 (100, 200, 300 and 400 ppm) were used to assess the influence on sprouting abilities in three selected potato verities. The maximum sprouting efficiency was observed in 400ppm GA3 treatment within short period of time in Granola variety. The effect of different combination and concentration of IBA, 2, 4-D and BAP was used along with fresh MS media to inoculate meristems of potato sprouts. IBA concentration were 0.25mg/L, 1.5mg/L; 2, 4-D concentration were 0.125mg/L, 0.25mg/L, 0.37mg/L, 0.50mg/L, 1.0mg/L 2.0mg/L and BAP concentration were 0.5 mg/L, 1.0 mg/L, 1.5 mg/L and 2mg/L. The effect of combined hormones was also studied. The Diamant variety showed the maximum callus size (0.74cm) within a very short period of time (2 days) while treated at the concentration of 0.25 mg/L IBA, 0.25 mg/L 2, 4-D and 1.00 mg/L BAP. Granola meristem inoculated in hormonal treatment showed the best results regarding minimum days required to shoot initiation (5.34 days) followed by Diamant (6.68) days and Cardinal (7.64 days). The highest number of shoots/plantlet (4.33 shoots/plantlet) and the longest plantlet (9.32 cm) was found in Granola variety followed by Diamond (3.67 shoots/plantlet; 7.53cm) and Cardinal (4.0 shoots/plantlet; 7.62 cm). Maximum numbers of leaves were also found in Granola variety (15 leaves) in the treatment combination of 0.25 mg/L IBA, 0.125 mg/L 2,4-D and 0.5 mg/L BAP. Granola gave maximum performance in respect of maximum length of root (6.55 cm roots/plantlets) within a short time of root initiation (20 days), followed by Diamant (4 cm roots/plantlets) of root initiation (4.47 days) and Cardinal (4.53 cm roots/plantlets) of root initiation (26.39 days). Rooted plantlets were gradually acclimatized and successfully established in the field. However, in overall observation in this study, Granola showed better performance from meristem tissue culture and all plants were found normal and free from potato viruses that were tested through ELISA test.

Analysis of contract farming pattern and income comparison of potato farmers on atlantic and granola varieties

Contract farming is a practice in order to decrease the risk and uncertainty commonly done on farming. Generally, contract farming is divided into two types that are production contract and market contract. Contract farming is commonly done on the strategic and high-risk agricultural? commodities, one of them is the potato. Potato (Solanum tuberosum) is a commodity with high risk. One of the contract farming done on potato commodity is a contract occurred between farmer group and PT. “KLM” in Ijen District Bondowoso Regency, East Java Province Indonesia. The writer would like to review more related to the contract farming pattern occurred and compare the potato farmers’ income following the contract farming and independent contract. This research was done from February until April 2019. Samples in this research used probability sampling on 106 potato farmers consisting of 76 farmers incorporated within contract farming and 29 farmers independently. The research results showed that contract farming intertwined was the contract farming type of market. The comparison of potato farmers income following the contract farming was lower than independent potato farmers income with the difference of IDR 4,515,417.49.

Chicken manure and biofertilizer for increasing growth and yield of potato (Solanum tuberosum l.) of Granola varieties

The experiment aimed to assess the characteristics of growth and yield of potato due to the application of chicken manure and biofertilizer was conducted. The research began on from February until June 2018, in Pangalengan The experiment arranged as factorialized randomized block design, consisted two factor with three replications. Cchicken manure dosage (k1 = 5 ton ha−1, k2 = 10 ton ha−1, k3= 15 ton ha−1 ) and Biofertilizer concentrate (h1 = 2,5 mL L−1, h2 = 5,0 mL L−1, h3= 7,5 mL L−1). The measured parameters were the growth (plant height, number of stem, number of leaf) and yield of potatoes (weight number of tuber, weight of tuber per plot, number of tuber per plant, weight of tuber, potato weight classification). The result showed that the interactions between the chicken manure dosage and biofertilizer concentrate affected the number of potato tubers per plant, weight of potato tubers per plant, and potato yield per plot. The highest yield (55.30 kg per plot) was obtained by combination k2h3 (chicken manure dosage 10 ton ha−1 and biofertilizer concentre 7,5 mL L−1). These findings concluded that the chicken manure combined with biofertilizers could be applied to increase the growth and productivity of potatoes.

Enhancement of Potato Shelf Life: Role of Pre-Harvest Potassium Application

An experiment was conducted at the research field in Gazipur, Bangladesh during winter season of 2014-2015 to determine the effect of different potash fertilizer rates as pre-harvest application viz. K1 (0 kg-K2O/ha), K2 (150 kg-K2O/ha), K3 (175 kg-K2O/ha) and K4 (200 kg-K2O/ha) on storability of different potato varieties (V1= Cardinal, V2=Courage, V3=Diamant, V4=Granola) under natural condition. The potato tubers were stored in a well ventilated room of day and night temperature of (25-30°C) and (20-25°C), respectively. Result revealed that after 135 days of storage, lowest cumulative weight loss was recorded in Granola (12.66%) followed by Courage (21.50%), Diamant (30.84%) and Cardinal (30.84%). The cumulative weight loss was minimum (10.66%) in Granola variety after 135 days of natural storage where the pre-harvest potassium application rate was @ 200 kg-K2O/ha.

DETEKSI POTATO VIRUS Y DENGAN ELISA PADA BENIH KENTANG (Solanum tuberosum L.) VARIETAS GRANOLA DAN ATLANTIK HASIL PENANGKAR BENIH KABUPATEN BANJARNEGARA

The aims of the research were finding the differencesin the production of tuber potatoes and detecting Potato Virus Y on various tuber generation from Banjarnegara Regency using Enzyme Linked Immunosorbent Assay (ELISA) test. This research was conducted in two stages. The first stage wasa survey and an interview on potato breeders in Banjarnegara district of Central Java province. The second stageis ELISA test in the Laboratory of Plant Breeding and Biotechnology, Agricultural Faculty, the University of Jenderal Soedirman, North Purwokerto, Purwokerto, Central Java. ELISAkit was obtained from Agdia. Inc Elkhar tIndiana, United States. Tubers of potatoes,Granola variety and Atlantic variety were obtained from potato breeders in Banjarnegara Regency. Survey and interview were conducted at seven seed breeders by asking questions about the process for producing potato tubers. ELISA test was performed on 1 g tuber/sample. Antigen was extracted from the sample using 10 ml General Extract Buffer/sample. Then 100 ml solution of antigen was transfered into ELISA wells and incubated for 2 hours. After incubation the antigen solution was removed from the wells. Then the wells were washed using Phosphate Buffer Saline Tween (PBST) seven times. 100 ml enzyme conjugate was added/well and incubated for 2 hours. Enzyme conjugate solution was removed and washed using PBST eight times. Substratep-Nitrophenyl was added as much as 100 ml/well and incubated for 60 minutes. The result was read using a micro plate reader at 405 nm wave length.The results showed that, the way potato cultivation in order to produced seed varieties Granola and Atlantic using a screen house and aeroponics method were of effective way for produced free Potato Virus Y tubers. Results of tests using ELISA against Granola varieties and Atlantic of seed potatoes from six breeders in Banjarnegara Regency showed that, seed potato varieties Granola G4 from breeder Trubus contained of Potato Virus Y. Keyword: Tuber potatoes, Potato Virus Y, ELISA

Pengaruh Dosis Pupuk Kandang Ayam Terhadap Pertumbuhan dan Hasil Tanaman Kentang (Solanum tuberosum L.) Varietas Granola

The aim of this research is to get the dosage of chicken manure which can give the best effect on the growth and yield of potato (Solanum tuberosum L.) Granola Variety. The experiment was conducted in Marga Mekar Village Pangalengan District Bandung Regency West Java Province. With an altitude of ± 1,200 meters above sea level, Andisol soil type with pH 5.4. with rainfall of 1980,42 mm/year including type C2 rainfall according to Oldeman (1975). The experimental time from May until August 2017. The research method used was Randomized Block Design (RBD) consisting of six treatments and four replications. The treatment of chicken manure is as follows A (0 ton / Ha), B (6 ton / Ha), C (8 ton / Ha), D (10 ton / Ha), E (12 ton / Ha) and F (14 ton / Ha). The results showed that the application of chicken manure with Dosage 6 ton / ha gave better effect to plant height, while the dosage of 12 ton / ha gave the best effect to weight of tuber per potato plant (Solanum tuberosum L.) Granola Variety.

PENGARUH MEDIA TANAM TERHADAP PERTUMBUHAN SETEK MIKRO KENTANG VARIETAS GRANOLA

Potato (Solanum tuberosum L) isan agricultural crop that has high economic value, it gets priority to be developed. This research at was conducted Screen House of Balai Benih Induk Kentang (BBIK) Kayu Aro subdistrict Kerinci regency.The purpose of this research was to know the effect of planting media On Micro Cutting Growth Of Granola Potato Variety (Solanum Tuberosum L). This study was used Completely Randomized Design (RAL) with 6 Treatment 10 Deuteronomy. The observed parameters were percentage of live micro cuttings potato, the high micro cuttings, number of shoots, numbr of leaves, and length of rootwere analyzed by the variance of investigation and followed by DNMRT advanced test at 5% level. The investigation result of the highest percentage (%)of micro cutting potato live was 90%. The High of micro cuttings, number of shoots and number of leaves of micro cuttings granola varieties was showed that no significant effect on the treatment given. Whereas for the root length of micro cuttings showed thatthere was a significantly different effect.

Leaf area index of potato (Solanum tuberosum L.) crop under three nitrogen fertilization treatments

Nitrogen fertilization has considerable effects on growth and yield of potato crop. Leaf expansion is one of the most important growth parameters that can be used to optimize nitrogen fertilization management in agroecological practices. We evaluated the effect of nitrogen fertilization on the leaf area index (LAI) of potato crop during different phenological stages by two different methods. Experimental plots were established in a randomized block design with the following treatments: no nitrogen supply (0-N), 133 kg N ha-1 (133-N), and 400 kg N ha-1 (400-N), using the Granola variety, at the Andes region, Merida city, Venezuela. We measured leaf area at the main phenological stages of the crop using a plant canopy analyzer. LAI showed significant differences among treatments and phenological stages, except during the emergence stage. The maximum LAI values were obtained 55 days after emergence: 400-N (1.42±0.16) > 133-N (0.92±0.21) > 0-N (0.34±0.08). Nitrogen fertilization had a significant effect on the development of LAI in potato crop along its different phenological stages.

Produksi Benih Kentang Sistem Aeroponik dan Root Zone Cooling dengan Pembedaan Tekanan Pompa di Dataran Rendah

<p>ABSTRACT<br /><br />Nutrition pumps pressure is important in aeroponic. Optimal pump pressure produces well oxygenation, so that increases the dissolved oxygen content in the nutrition. It is good for plant roots. The purpose of this study was to determine pump pressure on the growth and yield potato seeds grown in aeroponics in lowland 125 m asl with root zone cooling. This study used a randomized block design non factorial. Data were analyzed using analysis of variance followed by a further test of orthogonal contrasts at the level of α = 5%. Results showed that different pump pressure on the provision of nutrient, temperature cooling in the root zone gave different results on the number of potato tubers per plant and weight per tuber in each variety. Root zone cooling temperature 15 °C, the pump pressure> 1.5 atm produce highest number of tubers per plant, i.e. 11.8 tuber of Granola variety and 8.2 tuber of Atlantic variety. The was no tuber produced from control (without referigeration). The highest weights per tuber (10.35 and 5.01 g for Atlantic and Granola variety, respectively) were reached with cooling temperature at 15 °C and the pump pressure > 1.5 atm.<br /><br />Keywords: evaporative cooling, hydroponics, potato, tuber, variety <br /><br /></p>

Varietal Evaluation of Potato Microtuber and Plantlet in Seed Tuber Production

Diamant, Asterix, and Granola varieties differed significantly in foliage coverage, plant height, and yield. They produced lower graded minituber (67.62%, 78.16% ha−1, and 66.27% of Asterix, Granola, and Diamant varieties, resp.) as per seed rule of the National Seed Board of Bangladesh, while foliage coverage (74.38%) was the maximum in Diamant. Microtuber in field condition showed the maximum survivability, plant height, foliage coverage, number of stems plant−1, and SPAD value as well as yield of minituber compared to plantlet. On the contrary, microtuber derived plants of the three varieties gave the maximum yield (20.49 t ha−1, 19.12 t/ha−1, and 19.98 t ha−1 of Asterix, Granola, and Diamant varieties, resp.) and it was the minimum in plants of plantlets derived from all varieties (9.50 t ha−1, 7.88 t ha−1, and 9.70 t ha−1 of Asterix, Granola, and Diamant varieties, resp.). Microtuber derived plants produced a minimum percentage of <28 mm size of minituber compared to plantlet derived plants in case of all varieties.