Ppt on Producion technology of turnip

Description

**Turnips: A Comprehensive Guide for Cultivation and Care**

Turnips, botanically known as *Brassica rapa L.*, belong to the Cruciferae family and are recognized for their biennial nature. Originating from the Mediterranean region, these versatile root vegetables thrive particularly well in the northern regions of India, including states like Jammu and Kashmir, Himachal Pradesh, and Punjab. The edible part of the turnip is a modified root known as the hypocotyl, which can be a significant source of vitamins B and C, while its green leaves are rich in vitamin A. This article explores the essentials of turnip cultivation, including growth conditions, soil requirements, and effective pest management strategies.

### Botany and Growth Conditions

Turnips develop a thickened underground hypocotyl that acts as a storage organ. The plant generally reaches maturity within 40 to 80 days, influenced by various factors, including cultivar choices and climatic conditions. Ideal soil for turnip cultivation is deep loam to clay loam, with a pH range of 5.5 to 6.8. Cool weather between 10°C to 13°C air temperature encourages optimal root development, as high temperatures can lead to tough and bitter tasting roots.

### Preparing for Cultivation

Proper field preparation is crucial for successful turnip growth. The land should be ploughed to a depth of 15-20 cm with a balanced application of organic manure to ensure soil fertility. Sowing typically occurs from late July to December, depending on the region, using 3-4 kg of seeds per hectare. The spacing between rows and plants is essential for maximizing yields.

### Nutrient and Water Management

Turnips require a balanced nutrient supply, particularly nitrogen, phosphorus, and potassium, to thrive. Regular irrigation is vital, with an average requirement of about 300 mm. The schedule usually includes pre-sowing irrigation followed by consistent watering to maintain soil moisture levels.

### Inter-Cultural Practices

Maintaining plant health through inter-culture practices is important. Thinning is necessary to avoid overcrowding, and weeding should be conducted every few weeks to minimize competition for resources. Herbicides can also play a role in controlling weed growth effectively.

### Harvesting and Handling

Understanding the right time to harvest is critical to ensuring the quality of turnips. Roots should be collected when they reach a diameter of 5-7.5 cm. Post-harvest handling, including irrigation just before harvesting, helps in the easy lifting of plants, thereby maintaining their quality.

### Pest and Disease Management

Turnips can be susceptible to various pests, including aphids and flea beetles, which can cause significant damage if not managed promptly. Regular monitoring and timely pesticide application can help control infestations effectively. Additionally, diseases like downy and powdery mildew require specific management practices, including the use of borax and fungicides.

### Varieties of Turnips

Several cultivars exist, each with unique characteristics. European types, such as Purple Top White Globe and Golden Ball, vary in size, flavor, and cultivation requirements. Asiatic varieties like Pusa Kanchan and Pusa Sweti are adapted to tropical climates, focusing on early maturity and flavor enhancement.

In summary, growing turnips can be a rewarding agricultural endeavor, provided one follows the right practices concerning soil preparation, irrigation, pest management, and harvesting. By understanding these critical factors, farmers can ensure a bountiful turnip yield that caters to both culinary and nutritional needs.

**Keywords**: Turnip cultivation, Botany, Soil management, Pest control, Varieties.