Potato is the most important food crop in the world. Also, it is a temperate crop that grown under subtropical conditions. Comparing to other vegetables, it has become one of the most popular crops. Moreover, it is an economical food that provides a source of low-cost energy to the human diet. Potatoes are a rich source of starch, vitamins especially C and B1, and minerals. It contains 20.6 % carbohydrates, 2.1 % protein, 0.3 % fat, 1.1 % crude fiber and 0.9 % ash. It also contains a good amount of essential amino acids like leucine, tryptophan, and isoleucine… etc.
Potato is a food crop in many countries of the world, where it is the first alternative to grain crops in solving the problem of food. Potato in Egypt is at the forefront of export vegetable crops Potassium is one of the determinants of the yield and quality of potato crop. Potassium works on:
Potatoes crops with high consumption of phosphorus and has many physiological effects on potato crop, including: -
The most important physiological effects of calcium on potato yield
Potassium deficiency symptoms of potato crop appear on the leaves in the form of burning edges of the old leaves with low chlorophyll content in the leaves as wrinkles and shrinkage of the leaves and then fall.
Phosphorus deficiency Symptoms on potato crop appearance of dark green color and deficiency Symptoms including:
Calcium deficiency shown on potato crop as follow: