D:viruses are not killed by antibiotics.
Yara Crop Nutrition
Search
Search Yara
Toggle Menu
27
Print Page
Agronomic Principles
Crop Characteristics
Potatoes produce a fibrous root system. These roots are at best no more than 24in long. Thus potatoes are shallow rooted compared to cereals for example, which can root to at least 47in depth. As a result, potatoes are often unable to exploit nutrients and soil moisture at depth within a soil profile.
While root growth occurs when soil temperatures are between 50 to 95˚F (10 to 35˚C), best, most active root development is at soil temperatures of between 59 and 68˚F (15 and 20˚C).
Leaf (haulm) growth occurs at temperatures of between 44.6 to 86˚F (7 to 30˚C) , but optimal growth is at around 68 to 77˚F (20 to 25˚C). Optimum temperatures for stolon growth are similar.
effects of soil temperature on root development
The potato tuber is an enlarged portion of the stolon. The initiation of this tuber is triggered by short day lengths (photoperiods), and involves growth hormones. The colder the soil temperature, the more rapid the initiation of tubers and the greater the number of tubers formed. The optimum soil temperature for tuber initiation is 59 to 68˚F (15 to 20˚C).
Under these conditions, the potato plant will have short stolons and shoots. Longer day lengths delay tuber initiation and favor the growth of the stolon and shoot. High temperatures also reduce tuber formation. Late varieties seem to be more sensitive to long day lengths or high temperature conditions.
Low nitrogen and high sucrose levels in the plant favor the formation of more tubers.
Once formed, tubers grow rapidly, reaching a maximum rate of up to 1,249 lb/ac/day in temperate climates. See figure below:
potato tuber growth rate, germany
Physiological Aging
By planting sprouted seed, crop growth can be advanced. The magnitude of this response and its effect on increasing crop yield is related to the physiological age of the seed at planting.
Answer:
organisms that have multiple sets of chromosomes- are common in certain plant and animal taxa, and can be surprisingly stable.
Explanation:
those are the advantages
A screening test called leukocyte esterase is utilized to find evidence of white blood cells in urine. You could have an infection in your bladder if this is the case. If such a test was positive, white blood cells as well as other indicators of infection must be looked for in the urine using a microscope.
Acute bacterial infection, perhaps cystitis, is anticipated to be discovered upon that urine culture plates assuming leukocyte esterase and nitrate tests are both positive.
Escherichia coli would be the cause of the urinary infection in this case, so we must find an antibiotic that would be effective against it. Therefore, first- as well as second-carbapenems, amoxicillin/clavulanic acid, and occasionally quinolones are chosen.
To know more about Leukocyte esterase here
brainly.com/question/13255489
#SPJ4
