NIDAR (Myclobutanil 10% WP)
Apple fruit is the oldest and commercially the most important temperate fruit and is fourth among the most widely produced fruits in the world after orange, banana, and grape. China is the largest apple producer in the world. In India it is mostly grown in Kashmir, hills of Uttar Pradesh, Himachal Pradesh. Apple cultivation also extended to Nagaland, Sikkim, Arunachal Pradesh, and Meghalaya. Apples are mostly consumed as fresh fruit but a small part of the production is processed in to jellies, juices, canned slices, candies. It can be grown at altitudes 1,500 m to 2,700 m. above sea level, in the Himalayan range which experience 1,000 to 1,500 hours of chilling or cooling (the number of hours during which temperatures remains at or below 70 C in winter season). The temperature during the apple growing season should be around 21 C to 24 C. For best growth and fruiting, apple trees need 100 cm to125 cm of annual rainfall, evenly spread throughout the year. Too much of rainfall and fog near the fruit maturity period would result in poor fruit quality with improper colour development of fruit and fungal spots on fruit surface. Apple cultivation is not suitable where high velocity of winds are expected.
Fungi are major causes of plant disease, accounting for perhaps 70% of all the major crop diseases. Some of these fungal plant pathogens are termed biotrophic because they establish an intricate feeding relationship with living host cells . Others are termed necrotrophic because they invade the plant tissues aggressively, killing the host cells to obtain nutrients.
2 Major diseases of Apple:
1 Apple Scab : Apple scab is a disease of Malus trees, such as apple trees, caused by the ascomycete fungus Venturia inaequalis. The disease manifests as dull black or grey-brown lesions on the surface of tree leaves, buds or fruits. Lesions may also appear less frequently on the woody tissues of the tree. Fruits and the undersides of leaves are especially susceptible. The disease rarely kills its host, but can significantly reduce fruit yields and fruit quality. Affected fruits are less marketable due to the presence of the black fungal lesions. Scab infections on leaves start as olive green to brown spots with an irregular or feathered edge. As leaf infections grow, they may merge together and assume a dark brown velvety appearance. Severely infected leaves may turn yellow and drop prematurely. Scab infections on young fruit start out as olive green to brown spots. As the lesions enlarge, they harden, and eventually become black, corky, inedible areas on the fruit. Severely infected fruit may be deformed and often crack open.
2 Apple Powdery Mildew : Powdery mildew of apple produces symptoms on young shoots, leaves, blossoms, and fruit. In general, symptoms are most noticeable on the leaves and fruit. The first sign of powdery mildew in spring is a 3- to 4-day delay in the opening of infected buds. Leaves and blossoms of these buds soon become covered with a white to light gray powder, the spores of the powdery mildew fungus. Flowers do not develop normally, are likely to be greenish white, and produce no fruit. On leaves of new shoot growth symptoms of powdery mildew are feltlike, white patches on the margins and lower surfaces. Infected leaves curl upward and soon become covered with a powdery coating of spores. New infections of succulent leaves and growing shoots reduce the size of the entire shoot. By midsummer, leaves and shoots may turn brown.
Solution : Fungicides are biocidal synthetic mixes or natural life forms used to execute growths or contagious spores. A fungistatic restrains their development. Growths can cause genuine harm in horticulture, bringing about basic misfortunes of yield, quality, and benefit. Fungicides are utilized both in farming and to battle contagious diseases in creatures. Chemicals used to control oomycetes, which are not growths, are likewise alluded to as fungicides, as oomycetes utilize an indistinguishable components from organisms to contaminate plants.
How HPM’s Nidar is useful for apple growers ???
It is a systemic fungicide with protective and curative action. Its absorption into plant is very fast and provides long duration control. It disrupts the ergo sterol biosynthesis pathway, which is vital to fungal cell wall formation. Rain fast after application of 2 hours of spray.
It is having lowest waiting period among other powdery mildewcide. NIDAR when used as Prophylactic or preventive application does not allow the pathogen to get infected and establish in the plant. It highly effective fungicide against disease Scab and Powdery Mildew.
Each good thing has an awful face as well.. so is the situation with fungicides. They have a heap utilize yet a few damages as well… yet that is unavoidable yet HPM Chemicals & Fertilizers Ltd. furnishes you the fungicides with most noteworthy adjust of good finished mischief remembering the utilitarian approach.