scholarly journals Physiological and morphological studies on potato plant : Part 14. Relation between the varying ratios of nitrogen and potassium supplies and the carbohydrate metabolism of potato plants

1953 ◽  
Vol 22 (1-2) ◽  
pp. 115-116
Author(s):  
Takashi TAGAWA ◽  
Ryutaro SAKAI
Keyword(s):  
Carbohydrate Metabolism ◽  
Potato Plant ◽  
Plant Part ◽  
Potato Plants ◽  
Morphological Studies

scholarly journals Split fertilization as a strategy to reduce the amount of fertilizer applied in potato crops form Colombia. Case of study

2020 ◽  
Vol 14 (2) ◽  
pp. 240-248
Author(s):  
Oscar Iván Monsalve ◽  
Eduardo María Espitia ◽  
Martha Marina Bolaños-Benavides
Keyword(s):  
Soil Fertility ◽  
Potato Plant ◽  
Split Application ◽  
Potato Plants ◽  
Low Efficiency ◽  
Effect On Yield ◽  
Potato Crops ◽  
Positive Effect

In potato crops in Colombia, fertilization has low efficiency in terms of absorption of nutrients by the plant due to fixing, leaching or volatilization processes. To counter this phenomenon, we evaluated the effect of the split application of fertilizers on potato plants and soil. Five treatments were evaluated: Control - fertilization used by farmers locally; As - fertilization recommended by the lab; AsSplit - monthly split of lab recommendation; AsSplit25 - monthly split of lab recommendation, reduced globally by 25%; AsSplit50 - monthly split of the lab recommendation, reduced globally by 50%. AsSplit treatment generated the highest yield (34.13 t ha-1), while treatments that reduced the amount of fertilizer by 25% and 50% obtained the lowest yield (30.94 and 29.57 t ha-1, respectively). However, they generated the lowest amount of NO3- in the leachate measurements at 30 and 90 cm deep. Our results suggest that designing the fertilization formula and applying it according to the requirements of the potato plant and soil fertility generates a positive effect on yield crop and environmental.

scholarly journals Field study on the effect of the Entomopathogenic Fungi Beauveria bassiana (Bals.) Vuil. On the cotton leaf worm Spodoptera littoralis (Boisd.) on potato plant.

2008 ◽  
Vol 2 (1) ◽  
pp. 24-32
Author(s):  
Sh. H. AL-Obaidi ◽  
L. K. AL-Ani ◽  
W. A. Hussain
Keyword(s):  
Field Study ◽  
Beauveria Bassiana ◽  
Entomopathogenic Fungi ◽  
Potato Plant ◽  
Spodoptera Littoralis ◽  
Infection Intensity ◽  
Soil Treatment ◽  
Cotton Leaf ◽  
Plant Yield ◽  
Potato Plants

A field study were conducted to evaluate the efficacy of the entomopathogenic fungi Beauveria bassiana as abiocontrol agent for the cotton leaf worm Spodoptera littoralis infesting potato plants. Results indicated that soil treatment of the entomopathogenic fungi significantly reduced the percentage of plant infestation to 64.3, 60.7 % after 14, 21 days. Results of the infection intensity also significantly reduced in treatment of entomopathogenic fungi in soil to 18.7, 9.9 pore/leaf after 14, 21 days of treatment.The results revealed the higher efficiency of entomopathogenic fungi on plant yield, it become 633.3 gm in entomopathogenic fungi in soil treatment.

scholarly journals The effect of potato rugose on the yield of some potato varieties

1961 ◽  
Vol 33 (1) ◽  
pp. 89-100
Author(s):  
Onni Pohjakallio ◽  
Laura Karhuvaara ◽  
Simo Antila
Keyword(s):  
Virus Infection ◽  
Potato Virus ◽  
Potato Plant ◽  
Potato Virus Y ◽  
Tuber Yield ◽  
Virus Disease ◽  
Potato Varieties ◽  
Potato Plants ◽  
Severe Type

The virus disease occurring in the potato varieties Harbinger, Aquila, and King George V was probably the potato rugose caused by potato virus Y (Solanum virus 2). In the variety Harbinger, the degree of strength of the virus disease probably varied as a result of the appearance of different races of potato virus Y. The type of the virus disease did not change from one vegetative generation of the potato to another. In the potato varieties Aquila and King George V, only the severe type of the disease was observed. The severe type of the virus disease reduced the tuber yield of all the potato varieties investigated to a level of 5 to 6 %, and the slight type occurring in the variety Harbinger to an average of 27 % of the normal. The virus infection appeared more frequently in Harbinger than in the variety Aquila. In the summer, when the infection of the potato plant took place, the virus disease reduced its productivity only relatively little. In the following vegetative generation of the diseased potato plants, the degree of their degeneration conclusively displayed itself. Following this, the wakening of the virus diseased plants did not progress further from one vegetative generation to the next.

scholarly journals The Effectiveness of Endophytic Fungi Origin of Potato Plant Roots in Coffee Skin Compost Media to Suppress Development of Potato Leaf Disease (Phytophtora infestans)

2020 ◽  
Vol 2 (1) ◽  
pp. 101-105
Author(s):  
Anna Fitriana ◽  
Lukman Hakim ◽  
Marlina Marlina
Keyword(s):  
Experimental Method ◽  
Endophytic Fungi ◽  
Potato Plant ◽  
Potato Production ◽  
Leaf Blight ◽  
Plant Roots ◽  
Potato Leaf ◽  
Potato Plants ◽  
Pathogen Attack ◽  
Blight Disease

Potato leaf blight is caused by Phytophthora infestans fungus is one of the important diseases in potato plants. The decrease in potato production due to P. infestans can reach 90%. Until now, P. infestans pathogen attack is an important problem and there is no fungicide that is really effective against the disease. This study aims to examine the effectiveness of endophytic fungi from potato roots in suppressing the development of P. infestans potato leaf blight disease carried out at University Farm Stasiun Riset Bener Meriah (UFBM) Syiah Kuala University Tunyang Village, Timang Gajah District, Bener Meriah Regency from May to October 2014. The method used is the experimental method. The results of this study indicate that endophytic fungi from the roots of potato plants in coffee skin compost media can suppress the development of leaf blight caused by P. infestans, endophytic fungi from potato plant roots in coffee skin compost media. The best results were found in B9 endophytic fungi isolates with the intensity of the pathogen attack P. infestans 48.00%, the intensity of damage to potato plants due to pathogen P. infestans and 2.60%, the weight of healthy tubers 332.4 grams.

scholarly journals Problems of Managing Potato Plant Growth Under Micropropagation for Primary Seeds

2021 ◽  
Author(s):  
Sergey Kornatskiy
Keyword(s):  
Plant Growth ◽  
Nutrient Medium ◽  
Potato Plant ◽  
Root Formation ◽  
Basal Part ◽  
Stem Length ◽  
Chlorocholine Chloride ◽  
Single Node ◽  
Potato Plants ◽  
Murashige Skoog

This study shows the possibility of controlling the growth of potato microplants when adding the Murashige-Skoog (MS) nutrient medium chlorocholine chloride (CCC) to the composition at a concentration of 0.05-0.25 mg ⋅ L −1. Varietal specificity of the reaction of potato plants to the preparation was revealed. At optimal concentrations of CCC, plants with a stem length of 7-10 cm in 250 ml flasks were grown from single-node microcuttings for 1.5 months. Microplants were removed from the flasks using 20 cm scissors and unsterilized tweezers. The roots were shortened to 2-3 mm and the basal part of the stems was treated with a chalk-based paste containing 0.04% indolylbutyric acid (IBA). Plants were planted on 36 mm diameter Jiffy 7 peat pellets directly in the laboratory. The trays with the material were transferred to the greenhouse at the end of April at a temperature of 20-25 °C and placed in the conditions of the upper fine irrigation. After 3-4 days, mass root formation began in the plants, and another week later the seedlings were ready for use. By then the height of the plants was 10-15 cm, and the roots were clearly visible on the surface of the peat pellets. Planting these seedlings in a technological greenhouse to obtain minitubers was convenient and inexpensive. Keywords: potato, microcuttings, microtubers, minitubers, chlorocholine chloride, peat pellets

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