Z -Safety : A Contact Fungicide
Onion is one of the most important commercial vegetable crop grown in India. It is cultivated in India for thousands of years. It is one of the oldest cultivated vegetables. It is used as salad or cooked in various ways in all curries, fried, boiled or baked. It is also used in processed form e.g. flakes, powder, paste, crush and pickles. Onion has great therapeutic value. They are stimulants and mild counter-irritant. It has been used as a herbal remedy for centuries in colds, coughs, bronchitis and many other diseases. Now it is found beneficial in cardio vascular diseases, diabetes and respiratory tracts diseases, cancer etc.
But these days onion production is getting reduced . The production and productivity of onion is becoming very low . The main reasons of low productivity is fungus. A variety of diseases and disorders affect onions and related crops in Ontario. Most of the diseases are caused by fungi or bacteria whereas disorders may be caused by adverse weather, air pollutants, soil conditions, nutritional imbalances and pest control products. Sometimes several diseases can be present at the same time. Two such diseases are Downy Mildew and Blight .
1. Blight : Blight is a very common disease that is caused by the fungus Botrytis squamosa, which overwinters as sclerotia in soil, on onion debris and on bulbs in cull piles. The first symptoms of leaf blight are greyish-white, oval-shaped spots, about 1 to 3 mm in length that appear on the leaves. These spots are often surrounded by a distinctive silvery-white “halo” with uneven margins . The centres of many spots become sunken and straw-colored and when numerous, the leaf tips begin to dieback, eventually affecting the entire leaf.
2. Downy mildew of onions is caused by the air-borne fungus Peronospora destructor. This disease is not as common as Botrytis leaf blight, but when conditions are favorable for downy mildew, it can destroy an onion crop very quickly. The first sign of downy mildew is a purple-grey, velvety growth on otherwise green leaves . The disease often starts in patches and is favored by cool, (less than 22°C) humid weather. Diseased leaves quickly turn pale-green, then yellow, and collapse and die. The pale-green and yellow phase is characterized by oval-shaped lesions that often become infected with other diseases such as purple blotch or bacterial infections. Several cycles of sporulation and infection can occur and three or four of these cycles can destroy an onion crop over a period of 30 to 45 days.
Solution : Onion crop must be protected from these harmful diseases by applications of protective fungicides. Fungicide is a particular sort of pesticide that controls parasitic sickness by particularly restraining or slaughtering the organism causing the infection.Fungicides prevent and cure diseases which can have adverse effects on crop yields and quality. Fungicides work in a variety of ways, but most of them damage fungal cell membranes or interfere with energy production within fungal cells. These are used as a formulated product consisting of an active ingredient plus inert ingredients that improve the performance of the product.
HPM’s contribution : The nation’s driving organization HPM is completing a ton of Commendable work. For the improvement of farmers organization is giving them the best quality insecticides,fungicides,herbicides and plant growth regulators. The association has an extent of things that oblige farmers chasing down better quality make . HPM has lots of products to solve these problems . organisation has paid special attention on these issues and developed a package of products for increasing onion production which included varieties . One such product of the company is Z -Safety . It is a broad spectrum fungicide with protective action. It is used on variety of fruits, vegetables, cereals and pulses. It is known for providing highest Zinc nutrition to the crop. Broad-spectrum fungicide, which controls large no. of diseases with its multisite action. Z-Safety sprays results in dark green colored healthy leaves & ultimately increase in yield. Z-safety is safe to foliage, blossoms and fruits of many plants. It is an ideal tank mix partner with systemic fungicides which prevent the chances of resistance development against them. For better disease management, it is always advisable to remember t he maxim — PREVENTION IS ALWAYS BETTER THAN CURE. Generally the sprays of Z safety should start before the appearance of disease or at-disease initiation . The use of “Z-Safety” will end the problems of Downy mildew and Blight. It is one such fungicide which is compatible with other agrochemicals.