scholarly journals Potassium Fertilization in Potato

2019 ◽  
Vol 7 (2) ◽  
pp. 153-160 ◽  
Author(s):  
Bishal Bista ◽  
Devashish Bhandari
Keyword(s):  
Crop Production ◽  
Growth Parameters ◽  
Solanum Tuberosum L ◽  
Sugar Content ◽  
Hollow Heart ◽  
Quality Parameters ◽  
Optimum Dose ◽  
Potato Tubers ◽  
Tuber Production ◽  
Potassium Application

Potato (Solanum tuberosum L.) is one of the major vegetable crops of Nepal. Potato is grown all over the globe and consumed as either vegetable or staple food depending upon the crop production scenario. It is also an integral part of human diet. Potato is a high nutrient mining crop and needs higher fertilization for economic tuber production. Despite sufficient application of Nitrogen (N) and Phosphorus (P2O5), low replenishment and widespread potassium deficiency are limiting the potato production in Nepalese condition. Growth parameters such as plant height, leaf area and chlorophyll% was positively correlated with potassium application. Potassium alleviated stresses of frost and drought and reduced incidence of diseases like late blight, black scurf and hollow heart. Potassium also decreased the reducing sugar content and improved chips color and quality. Similarly, potassium application before harvest was found to increase storage life of potato tubers. Furthermore, potassium application significantly increased the yield of potato tubers and quality parameters such as Vitamin C content and specific gravity. Source of potassium and method of potassium application also affected growth, yield and quality parameters. Soil application of potassium in splits coupled with foliar spay was found to perform better.  Optimum dose of potassium was recommended for economic tuber production. Int. J. Appl. Sci. Biotechnol. Vol 7(2): 153-160

scholarly journals Agronomic and Environmental Aspects of Conservation Agriculture on Wheat Crop Production

2019 ◽  
Vol 7 (2) ◽  
pp. 161-166
Author(s):  
A. Bista ◽  
T.N. Joshi ◽  
K. Biswokarma ◽  
S. Yadav
Keyword(s):  
Crop Production ◽  
Solanum Tuberosum L ◽  
Sugar Content ◽  
Hollow Heart ◽  
Quality Parameters ◽  
Wheat Crop ◽  
Optimum Dose ◽  
Potato Tubers ◽  
Tuber Production ◽  
Potassium Application

Potato (Solanum tuberosum L.) is one of the major vegetable crops of Nepal. Potato is grown all over the globe and consumed as either vegetable or staple food depending upon the crop production scenario. It is also an integral part of human diet. Potato is a high nutrient mining crop and needs higher fertilization for economic tuber production. Despite sufficient application of Nitrogen (N) and Phosphorus (P2O5), low replenishment and widespread potassium deficiency are limiting the potato production in Nepalese condition. Growth parameters such as plant height, leaf area and chlorophyll% was positively correlated with potassium application. Potassium alleviated stresses of frost and drought and reduced incidence of diseases like late blight, black scurf and hollow heart. Potassium also decreased the reducing sugar content and improved chips color and quality. Similarly, potassium application before harvest was found to increase storage life of potato tubers. Furthermore, potassium application significantly increased the yield of potato tubers and quality parameters such as Vitamin C content and specific gravity. Source of potassium and method of potassium application also affected growth, yield and quality parameters. Soil application of potassium in splits coupled with foliar spay was found to perform better.  Optimum dose of potassium was recommended for economic tuber production Int. J. Appl. Sci. Biotechnol. Vol 7(2): 161-166  

scholarly journals Iodine Biofortification of Potato (Solanum tuberosum L.) Grown in Field

Agronomy ◽  
2020 ◽  
Vol 10 (12) ◽  
pp. 1916
Author(s):  
Iwona Ledwożyw-Smoleń ◽  
Sylwester Smoleń ◽  
Stanisław Rożek ◽  
Włodzimierz Sady ◽  
Piotr Strzetelski
Keyword(s):  
Dry Matter ◽  
Foliar Application ◽  
Solanum Tuberosum L ◽  
Sugar Content ◽  
Soluble Sugar ◽  
Iodine Content ◽  
Matter Content ◽  
Dry Matter Content ◽  
Potato Tubers ◽  
Daily Diet

Despite wide prevention programmes, iodine deficiency remains a substantial problem in various populations around the world. Consumption of crop plants with increased iodine content may help supply additional amounts of that element in a daily diet. The aim of the work was to evaluate the efficiency of iodine biofortification of potato tubers. Soil application of KI and foliar application of KIO3 in doses up to 2.0 kg I ha−1 were tested in a three-year field experiment. Biomass, yield as well as dry matter, iodine, starch, and soluble sugar content in potato tubers were analyzed. No negative effect of tested methods of iodine application on potato yield or dry matter content was observed. Both soil and foliar application of iodine allowed to obtain potato tubers with increased content of that element with no decrease of starch or sugar content. The highest efficiency of iodine biofortification was noted for foliar spraying with KIO3 in a dose of 2.0 kg I ha−1. The obtained level of iodine in 100 g of potatoes could be sufficient to cover up to 25% of Recommended Daily Allowance for that element. The findings of the study indicate that potatoes biofortified with iodine can become an additional source of I in a daily diet.

scholarly journals When Termites’ Waste Products Highlight a Fundamental Law of Fertilization under Rainfed Rice Cultivation in West Cote d'Ivoire

2021 ◽  
Vol 3 (1) ◽  
pp. 53-60
Author(s):  
Dogniméton Soro ◽  
Lacina Yeo ◽  
Zoumana Konate ◽  
Martinez Arnauth Guei ◽  
Gohi Ferdinand Zro-Bi
Keyword(s):  
Cote D'ivoire ◽  
Crop Production ◽  
Côte D’Ivoire ◽  
Growth Parameters ◽  
Soil Analysis ◽  
Optimum Dose ◽  
Yield Data ◽  
Cote D’Ivoire ◽  
Waste Products ◽  
Côte D'ivoire

Food security is a major development issue in Côte d’Ivoire that is experiencing population growth over 3% per year. Food crop production, however, is experiencing weak growth, most often linked to increase in area. In addition, low yields could be explained by the scarcity of rainfall in a context where farmers hardly use agronomic-based fertilizers without soil analysis although Cote d’Ivoire is agricultural based developing country. To be part of integrated production logic in rice production, a study is initiated in 2016 in Daloa in order to improve the yield of paddy rice by using a local amendment produced by termites kept in captivity on agricultural residues. Four (4) doses of this amendment made of termites’ waste products (TWP): 1.8%; 3.6% and 7.2% and 14.4% of one hectare soil weight were tested versus an unfertilized (control) and a NPK fertilized (100kg.ha)-. The experimental design consists of randomized complete blocks with three replicates. Plant growth parameters such as plant height at maturity, total number of tillers, number of leaves at the beginning of tillering, biomass at maturity and yield data were collected. The results showed that all agronomic parameters were improved with increasing dose up to an optimum dose that can be found between 7.2 % and 14.4 % of termites’ waste products. The highest yield (2484.3 kg.ha-1) was obtained with the 7.2 % dose. The results of the application of the TWP on rice showed important yield increases with efficacy varying from 30 to 72 % compared to common fertilizer application and 27.1 to 221.9 % if compared to non-fertilized plot.

scholarly journals Drought-induced Regulatory Cascades and Their Effects on the Nutritional Quality of Developing Potato Tubers

2020 ◽  
Author(s):  
Letitia Da Ros ◽  
Raed Elferjani ◽  
Raju Soolanayakanahally ◽  
Sateesh Kagale ◽  
Shankar Pahari ◽  
...  
Keyword(s):  
Crop Production ◽  
Solanum Tuberosum L ◽  
Canopy Temperature ◽  
Potato Tubers ◽  
Drought Treatment ◽  
High Tunnels ◽  
Tuber Bulking ◽  
Regulatory Cascades ◽  
Scarce Water

Potato is among one of the most important food crops, yet maintaining plant productivity in this drought-sensitive crop has become a challenge. Competition for scarce water resources and the continued effects of global warming exacerbate current constraints on crop production. While plants’ response to drought in above-ground tissues has been well documented, the regulatory cascades in developing tubers have been largely unexplored. Using the commercial Canadian cultivar ‘Vigor’, plants were subjected to a drought treatment under high-tunnels causing a 4 ℃ increase in canopy temperature when compared to the well-watered control. Tubers were sampled for RNAseq and metabolite analysis. Approximately 2600 genes and 3898 transcripts were differentially expressed by at least four-fold in drought-stressed potato tubers, with 75 % and 69 % being down-regulated respectively. A further 229 small RNAs were implicated in gene regulation during drought. The comparison of protein homologues between Solanum tuberosum L. and Arabidopsis thaliana L. indicates that downregulated genes are associated with phenylpropanoid, carotenoid, and patatin biosynthesis. This suggests that there may be nutritive implications to drought stress occurring during the potato tuber bulking phase in sensitive cultivars.

scholarly journals Effect of white fleece on the selected quality parameters of early potato (Solanum tuberosum L.) tubers

2011 ◽  
Vol 49 (No. 8) ◽  
pp. 370-377 ◽  
Author(s):  
J. Laxhman ◽  
K. Hamouz ◽  
A. Hejtmánek ◽  
J. Dudjak ◽  
M. Orsák ◽  
...  
Keyword(s):  
Ascorbic Acid ◽  
Solanum Tuberosum L ◽  
Ascorbic Acid Content ◽  
Field Trials ◽  
Quality Parameters ◽  
Cultivated Plants ◽  
Nitrate Content ◽  
Early Potato ◽  
Potato Tubers ◽  
Potato Genotype

The effects were tested of white fleece on the contents of ascorbic acid, nitrates, and polyphenols in 1999 and 2000, and on the carotenoids content in 2000 and 2001 intubers of two early potato varieties (Adora and Impala) in field trials on two cultivation sites (Přerov n/Labem and Prague-Troja). Early irrigated potatoes were cultivated according to the uniform methodology for field trials. Two variants were compared – cultivated plants covered with white fleece (Pegas-Agro UV 17) and the controls without any covering. The tubers were harvested three times in intervals of 7–16 days. The results were statistically tested by ANOVA and Tukey’s methods. Ascorbic acid content showed a tendency to higher values in the potatoes covered with white fleece as compared with the control samples (average increase by 12.3%). The effect of the fleece was significantly affected by the potato genotype and the year of cultivation (cv. Adora showed a content higher by 12.54% in comparison with the control). The tendency to reduce nitrate levels was observed in potato tubers cultivated under the fleece, especially in the second term of harvest (on average by 14.34%). The decrease between the first and the third term of harvest was apparent. The higher was the maturity of potato tubers, the lower nitrate content was found. Significant differences were found between the varieties (P = 0.0058) and the cultivation sites (P = 0.0399). The effect of white fleece on polyphenol content was not statistically significant. However, the effect of the year of cultivation on the polyphenols content was significant (P = 0.0094). The effect of white fleece on the carotenoids content was not statistically significant but a tendency to lower contents in the variant with white fleece was found (by 7.2%). The sites and the varieties affected the carotenoids contents significantly (P = 0.0028 and P = 0.0417, respectively).

scholarly journals Effect of plastic mulches on growth and yield of potato (Solanum tuberosum L.) in Dadeldhura, Nepal

2020 ◽  
Vol 3 (2) ◽  
pp. 228-240
Author(s):  
Manoj Bhatta ◽  
Bhimsen Shrestha ◽  
Ananta Raj Devkota ◽  
Khem Raj Joshi ◽  
Sabin Bhattarai ◽  
...  
Keyword(s):  
Tuber Yield ◽  
Growth Parameters ◽  
Solanum Tuberosum L ◽  
Block Design ◽  
Potato Production ◽  
Quality Parameters ◽  
Growth And Yield ◽  
Plastic Mulch ◽  
Marketable Tuber ◽  
Black Plastic

A field experiment was conducted from February to June, 2020 at Bhatkanda, Dadeldhura, Nepal to assess the effectiveness of plastic mulches in potato production. The experiment was laid out in Randomized Complete Block Design (RCBD) with four replications comprising of five treatments viz: T1: white plastic mulch (white on black colored), T2: silver plastic mulch (silver on black colored), T3: perforated black plastic mulch, T4: black plastic mulch and T5: control (without mulch). Results revealed that the black plastic mulch significantly increased the rate of emergence while perforated black plastic exhibited highest values of all other studied growth parameters, yield components and quality parameters. The highest marketable tuber yield was obtained in perforated black plastic (6.05 kg/m2) followed by silver plastic (5.62 kg/m2), white plastic (5.46 kg/m2), black plastic (5.14 kg/m2) and lowest marketable tuber yield was obtained in control condition (4.07 kg/m2). Similarly, temperature difference between controlled and mulched condition at 15 cm depth of soil was observed up to 2.8°C with its highest value in black plastic mulch and lowest in control condition. The perforated black plastic mulch was found most economical with maximum value of net return (NRs. 1904.31 thousands/ha) and B: C ratio (5.83). This study concludes that the use of perforated black plastic mulch is most economical with optimum plant growth and yield, producing best quality potatoes under climatic condition of Dadeldhura, Nepal.

scholarly journals Drought-Induced Regulatory Cascades and Their Effects on the Nutritional Quality of Developing Potato Tubers

Genes ◽  
2020 ◽  
Vol 11 (8) ◽  
pp. 864
Author(s):  
Letitia Da Ros ◽  
Raed Elferjani ◽  
Raju Soolanayakanahally ◽  
Sateesh Kagale ◽  
Shankar Pahari ◽  
...  
Keyword(s):  
Crop Production ◽  
Storage Proteins ◽  
Solanum Tuberosum L ◽  
Potato Crop ◽  
Canopy Temperature ◽  
Carotenoid Biosynthesis ◽  
Phenylpropanoid Pathway ◽  
Potato Tubers ◽  
Drought Treatment ◽  
Regulatory Cascades

Competition for scarce water resources and the continued effects of global warming exacerbate current constraints on potato crop production. While plants’ response to drought in above-ground tissues has been well documented, the regulatory cascades and subsequent nutritive changes in developing tubers have been largely unexplored. Using the commercial Canadian cultivar “Vigor”, plants were subjected to a gradual drought treatment under high tunnels causing a 4 °C increase in the canopy temperature. Tubers were sampled for RNAseq and metabolite analysis. Approximately 2600 genes and 3898 transcripts were differentially expressed by at least 4-fold in drought-stressed potato tubers, with 75% and 69% being down-regulated, respectively. A further 229 small RNAs were implicated in gene regulation during drought. Expression of several small RNA clusters negatively correlated with expression of their six target patatin genes, suggesting involvement in the regulation of storage proteins during drought. The comparison of protein homologues between Solanum tuberosum L. and Arabidopsis thaliana L. indicated that down-regulated genes were associated with phenylpropanoid and carotenoid biosynthesis. As is indicative of reduced flow through the phenylpropanoid pathway, phenylalanine accumulated in drought-stressed tubers. This suggests that there may be nutritive implications to drought stress occurring during the potato tuber bulking phase in sensitive cultivars.

scholarly journals Effect of varied planting time and dehaulming on the yield potential, processing quality and economic benefit in potato

2017 ◽  
Vol 42 (2) ◽  
pp. 273-288
Author(s):  
MS Alam ◽  
N Islam ◽  
MJ Hossain ◽  
MSR Bhuiyan ◽  
MI Hossain
Keyword(s):  
Dry Matter ◽  
Tuber Yield ◽  
Agricultural Research ◽  
Growth Parameters ◽  
Sugar Content ◽  
Quality Parameters ◽  
Yield Potential ◽  
Processing Quality ◽  
Planting Time ◽  
Yield And Quality

A field experiment was conducted for producing higher processing grade tuber yield and quality by evaluating in relation to different planting times (31 October, 15 and 30 November) and dehaulming dates (80, 90 and 100 days after planting) during 2012-13 potato growing season at Bangladesh Agricultural Research Institute, Gazipur. Results revealed that different growth parameters like plant height, leaves number per hill and foliage coverage were significantly influenced by planting times. Processing and non processing grade tuber number and yield were significantly affected by all the treatments and their interaction. Significantly higher yield of processing grade tuber were recorded in November 15 planting in combination with all the dehaulming dates, ranged from 20.67 to 21.50 t/ha. Processing quality parameters like specific gravity, dry matter, reducing sugar content were significantly varied by planting times, dehaulming dates and their interaction. Whereas the potato chips colour score were not affected by the planting time and dehaulming but all the processing quality parameters were remained in acceptable range. The highest net return (Tk 1,68,404/ha) with a BCR of 1.93 was obtained in November 15 planting with dehaulming at 90 days after plantingBangladesh J. Agril. Res. 42(2): 273-288, June 2017

Development of the sugar beet quality in the Netherlands since 1980 and introduction of invert sugar as a new parameter for beet quality assessment

2015 ◽  
pp. 95-103 ◽  
Author(s):  
Dirk P. Vermeulen
Keyword(s):  
The Netherlands ◽  
Sugar Beet ◽  
Quality Assessment ◽  
Sugar Content ◽  
Quality Parameters ◽  
Invert Sugar ◽  
Internal Quality ◽  
Glucose Content ◽  
Thick Juice ◽  
Trial Phase

The technological beet quality has been always important for the processors of sugar beet. An investigation into the development of the beet quality in the Netherlands since 1980 has shown that beet quality has improved significantly. Internal quality parameters that are traditionally determined in the beet laboratory, i.e. sugar content, Na, K and -aminoN, all show an improving trend over the years. In the factories, better beet quality has led to lower lime consumption in the juice purification and significantly higher thick juice purity. In 2013, Suiker Unie introduced the serial analysis of the glucose content in beet brei as part of the routine quality assessment of the beet. The invert sugar content is subsequently calculated from glucose content with a new correlation. The background, the trial phase and the first experiences with the glucose analyzer are discussed.

scholarly journals Preliminary Insights in Sensory Profile of Sweet Cherries

Foods ◽  
2021 ◽  
Vol 10 (3) ◽  
pp. 612
Author(s):  
Vânia Silva ◽  
Sandra Pereira ◽  
Alice Vilela ◽  
Eunice Bacelar ◽  
Francisco Guedes ◽  
...  
Keyword(s):  
Sweet Cherry ◽  
Prunus Avium ◽  
Sugar Content ◽  
Principal Component ◽  
Titratable Acidity ◽  
Physicochemical Characteristics ◽  
Quality Parameters ◽  
Sensory Profile ◽  
Soluble Solids ◽  
Sensory Data

Sweet cherry (Prunus avium L.) is a fruit appreciated by consumers for its well-known physical and sensory characteristics and its health benefits. Being an extremely perishable fruit, it is important to know the unique attributes of the cultivars to develop cultivation or postharvest strategies that can enhance their quality. This study aimed to understand the influence of physicochemical characteristics of two sweet cherry cultivars, Burlat and Van, on the food quality perception. Several parameters (weight, dimensions, soluble solids content (SSC), pH, titratable acidity (TA), colour, and texture) were measured and correlated with sensory data. Results showed that cv. Van presented heavier and firmer fruits with high sugar content. In turn, cv. Burlat showed higher pH, lower TA, and presented redder and brightest fruits. The principal component analysis revealed an evident separation between cultivars. Van cherries stood out for their sensory parameters and were classified as more acidic, bitter, and astringent, and presented a firmer texture. Contrarily, Burlat cherries were distinguished as being more flavourful, succulent, sweeter, and more uniform in terms of visual and colour parameters. The results of the sensory analysis suggested that perceived quality does not always depend on and/or recognize the quality parameters inherent to the physicochemical characteristics of each cultivar.

Sign in / Sign up

Export Citation Format

Share Document