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Potatoworld Magazine
In the process of photosynthesis, units of solar radiation (photons) penetrate the leaf, enter the chlorophyll and excite the enzymes in the rubisco. The energy subsequently is used to create energy containing adenosine triphosphate (ATP) by phosphorylating adenosine diphosphate (ADP): ADP + P + energy -> ATP.
ATP is formed from a phosphate ion (P) with ADP thanks to solar energy or energy released by respiring sugars. ATP is the molecule that is used to deliver energy where it is needed in cells of the potato plant. The energy is needed elsewhere in the plant to assemble substances for growth and development such as enzymes, sugars, amino acid and starch in an inverse reaction: ATP -> ADP + P+ energy.
When a plant is subjected to unfavorable conditions such as heat, drought, or some herbicides, the photon does excite the chlorophyll that mounts to a higher energy level, but when other reactions fail, the chlorophyll loses its energy and drops back to its original energy level. It then emits a photon at a slightly different wavelength than that entered. This emission of once-absorbed radiation is called chlorophyll fluorescence and the degree of fluorescence is a measure of the degree of drought experienced by the plant. Fluorescence is measured with a small device. The observation can be used as one of the tools used in decision support on water management in potato production.
Agritechnica focus on trends in potato technology
From 12-18 November Agritechnica takes place in Hannover, Germany. During the event there is a main focus on potatoes. Dr. Rolf Peters presents his vision on trends in potato technology. He states that potato growing has required a particularly high degree of flexibility from farmers in this year’s growing season due to the intensive change…
The efficiency of overhead irrigation for potato crops
Irrigation with sprinklers, rain guns, center pivots or linear systems – as opposed to furrow and drip irrigation delivering water under the canopy – distributes water overhead, much like natural rainfall does.
The advantages of drip irrigation in potato cultivation
Of all irrigation practices, furrow irrigation loses most water through drainage and also loses more nitrogen through leaching than other irrigation practices. Drainage through deep percolation on the other hand is an advantage as it avoids accumulation of salts at the surface. Besides, erosion is considerable as the water flow to some extent always transports…
Potato Association of America to showcase industry advances during annual meeting
The annual meeting of the Potato Association of America (PAA) is scheduled to take place from July 23rd to 27th, 2023. PAA members, potato researchers and industry partners will gather in Charlottetown, the capital of Prince Edward Island. ‘We look forward to welcoming the PAA family to Prince Edward Island for the first time since…
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