New techniques to intensify winter tomatoes

Please introduce to the technical people new intensive cultivation of winter tomatoes.

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It is recommended to select varieties with good heat resistance, cold tolerance, infinite growth type, long time for fruit production will produce high yield and high income efficiency. The market currently has varieties used to eat fresh or good tomato concentrate production such as: P / S, BM 199, VL 2910, VL 2922 of the US; varieties TN 01, TN 05, TN 09, TN 129, TN 148 . of India and Taiwan. These are tomato varieties of infinite growth type, long fruit-bearing time, heat-resistant, cold-resistant and resistant to some high pests, especially wilt disease.

The common characteristics of these varieties are healthy growth, good anti-dumping, intensive cultivation, large fruits (average 85-130g / fruit), high yield (55-60 tons / ha), good quality, fruit flesh thick, rich in flour, when ripe, it is bright red, very beautiful, high brix (4.5-5), hard fruits are easy to preserve fruits and bear transportation, less seeds. The small fruit and tomato varieties used as raw materials for export processing have the same value as: Thuy Hong of Nong Huu Company, TN 060, TN 061 of Trang Nong and VR2 Company of the Institute of Fruits and Vegetables . This variety is in the form of infinite growth, long harvesting time, very wrong fruit, high yield, uniform fruit, beautiful and good quality fruit, can sell supermarkets to eat fresh or raw materials canning and bottling for export.

Nursing seedlings:

(Artwork: ictp.cnr.it)

Seedlings should be nursed in potting bags or foam trays, plastic trays can take advantage of time, while reducing the cost and quality of seedlings is guaranteed. Planting trees of full age and healthy after 22-25 days of sowing, when the tree has 3-4 leaves is the best.

Land preparation and planting:

Plowing carefully, drying well, applying fertilizer and harrowing before going to bed. Up to 55-60cm wide bed (single row), 80-90cm (double row) 35-40cm high, 25-30cm wide, 45-50cm away from the tree, 60cm from the row. If planted on paddy rice land, wet soil in the sunken area, plowing on beds, fertilizing manure (with manure + manure + soil) to plant, when the tree has green roots, dry soil, then the soil tattoo and fertilizer application to take advantage of time is called minimal tillage technique. It is recommended to use agricultural coatings of 2 colors (black and silver white) to cover the bed surface while limiting weeds, maintaining good moisture, saving fertilizer and labor, especially limiting cracking phenomena. bed surface causes root rupture, death of trees in wet areas.

Planted with grafted trees to prevent wilt and wilt disease:

Sowing eggplant seeds (rootstocks) before sowing tomato seeds (to get grafted tops) for 4-5 days in porous, blister trays for convenience. When tomatoes and eggplant have 3-4 real leaves, start grafting. Using a sterile razor to cut the trunk of eggplant (above 2 cotyledons) and tomato stalks (below 2 real leaves) and then use a dedicated rubber tube with a diameter of 2-3mm 2cm long to hold The 2 sections are very close together. After transplanting, take the tree to a shady place to take care of it. When the plant has been scarred, gradually bring it to a place where more light continues to care until it is qualified to grow in the field.

Amount of fertilizer and how to apply:

These are F1 hybrid tomatoes, have high yield potential, long time for fruit production, therefore need to apply enough fertilizer, balanced and timely fertilizer will bring high productivity and good quality. The amount of fertilizer calculated per 1 sao (360m2) includes: 800-1,000 kg of manure and 9-10 kg of urea + 20-25 kg super phosphate + 12-15 kg of potassium fertilizer.

Apply all manure, phosphate and 3 kg of potassium fertilizer.

- Apply first time after 10-15 days after planting with 1-1.5kg of urea
- Ending the second time after planting 25-30 days when the young buds have 1-1.5kg of urea + 3kg of potassium combined with the original, gantry.
- Ending the 3rd time when young fruit grows strongly with 1-1.5 kg of urea + 2kg of potassium by mixing irrigation water.
- Finish the 4th time after collecting the first bunch with 1 - 1.5 kg of urea + 2kg of potassium. S

The remaining fertilizer is divided after each harvest. It is possible to spray more foliar fertilizers such as Thien Nong, Atonik, Humate, Orgamin, Komic, Bioted (602, 603) . every 5-7 days, plants will thrive, time for collection prolonged planning, productivity increases by 30-35% or increase the amount of fertilizer and the number of times applied to the tree if necessary to increase yield and quality of fruits.

Take care of:

Pay attention to watering enough plants to grow and develop well, especially in flowering and raising big fruits. Make a truss in time, remove old leaves and sub-branches (only 1 main body and 1 level 1 branch just below the first flower). Attention should be paid to timely preventing pests and diseases, especially fruit pests, wilt and wilt diseases of tomatoes.