Tomato Cultivation Guide for Beginners:
Tomato is a warm season crop, it requires warm and cool climate. The plants cannot withstand frost and high humidity. Also light intensity affects pigmentation, fruit colour, fruit set. The plant is highly affected by adverse climatic conditions. It requires different climatic range for seed germination, seedling growth, flower and fruit set, and fruit quality. Temperature below 100C and above 380C adversely affects plant tissues thereby slow down physiological activities. It thrives well in temperature 100C to 300C with optimum range of temperature is 21-240C. The mean temperature below 160C and above 270C are not desirable. The plant doesn’t withstand frost, it requires low to medium rainfall, and does well under average monthly temperature of 21 to 230C. Avoid water stress and long dry period as it causes cracking of fruits. Bright sunshine at the time of fruit set helps to develop dark red coloured fruits.
Temperature Requirements for tomato cultivation:
Fruit set (day)
|Red colour development||10||20-24||30|
Land Soil Requirements for tomato cultivation:
Tomatoes do very well on most mineral soils, but they prefer deep, well drained sandy loams. Upper layer of soil should be porous with little sand and good clay in the subsoil. Soil depth 15 to 20cm proves to be good for healthy crop. Deep tillage can allow for adequate root penetration in heavy clay type soils, which allows for production in these soil types. Tomato is a moderately tolerant crop to a wide pH range. A pH of 5.5- 6.8 is preferred. Though tomato plants will do well in more acidic soils with adequate nutrient supply and availability. Tomato is moderately tolerant to acid an soil that is pH of 5.5. The soils with proper water holding capacity, aeration, free from salts are selected for tomato cultivation. Soils extremely high in organic matter are not recommended due to the high moisture content of this media and nutrient deficiencies. But, as always, the addition of organic matter to mineral soils will increase yield.
Choice of seeds for tomato cultivation:
After seed production, diseased, broken seeds are discarded. The seeds for sowing should be free from inert matter. Early germinating, bold, uniform in shape and size, seeds are selected for sowing. Hybrid seeds from F1 generation are advantageous for sowing as it gives early and high yield uniform fruity, resistant to adverse environmental conditions.
Time of planting for tomato cultivation:
- Tomato is a day neutral plant so wildly it found grown in any season.
- In the northern plains three crops are taken but in frost affected area rabi crop is not fruitful. The kharif crop is transplanted in July, rabi crop in October – November and zaid crop in February months.
- In the southern plains where there is no danger of frost, The first transplanting is done in December-January, Second June-July Third in September-October depending on the irrigation facilities available.
Tomato Seed and sowing:
Tomato is generally cultivated by transplanting seedlings on ridges and furrows. At the time of transplanting seedlings are harder by exposing to open weather or by withholding irrigation. A seed rate of 400 to 500g/ha is required. Seeds are treated with Thiram @ 3g/kg of seed to protect from seed born diseases. Seed treatment with B. naphthoxyacetic acid (BNOA) at 25 and 50 ppm, gibberllic acid (GA3) at 5-20 ppm and chlorophenoxy acetic at 10 and 20 ppm was found to improve the growth and yield of tomato. Seeds are sown in June July for autumn winter crop and for spring summer crop seeds are sown in November. In the hills seed is sown in March April. The spacing recommended for the autumn winter crop is 75 x 60cm and for spring summer crop 75 x 45cm.
Manuring for tomato cultivation:
Apply well rotten farm yard manure / compost @ 20-25 t/ha at the time of land preparation and mix well with the soil. A fertilizer dose of 75:40:25 kg N:P 2O5:K2O / ha may be given. Half the dose of nitrogen, full phosphorus and half of potash may be applied as basal before transplanting. One fourth of nitrogen and half of potash may be applied 20-30 days after planting. The remaining quantity may be applied two months after planting.
Transplanting for tomato cultivation:
- The transplanting is done in small flat beds or in shallow furrow depending upon the availability of irrigation.
- In heavy soil it is usually transplanted on ridges and during the rains also it is advantageous to plant the seedlings on ridges.
- For indeterminate varieties/hybrids, the seedlings have to be staked using bamboo sticks of two meter length or planted in broad ridge of 90 cm width and 15 cm height. The seedlings are planted in the furrows at a spacing of 30 cm and the plant is allowed to spread on the broad ridge.
Spacing for tomato cultivation:
The spacing recommended for the autumn-winter crop is 75 x 60 cm and for the spring-summer crop 75 x 45 cm.
Nursery Preparation and Care:
The ideal seedbed should be 60cm wide, 5-6cm long and 20-25cm high. Clods and stubbles should be removed from the seedbed. Add sieved FYM and fine sand on the seedbed. Bring them to fine tilth. Drench the bed with Fytolon/Dithane M-45 @ 2-2.5 g/lit of water. Draw the lines 10 to 15cm apart throughout the length of the seedbed. Sow the seeds thinly spaced in lines, press gently, cover with fine sand and then cover the bed with straw. Irrigate with rose can. Irrigate the seedbed twice a day till the seeds germinate. Remove the straw after the seeds germinate. Apply a little Thimet at 4-5 leaf stage. Spray the seedlings with Metasystox/Thiodan @ 2-2.5 ml/lit water and Dithane M-45 @ 2-2.5 g/lit water.
Weed Control for tomato cultivation:
There is need of light hoeing during first four weeks in the field which encourage the growth but also remove the weeds from the field. The surface soil is loosened by hand hoeing as soon as it is dry enough after every irrigation or shower. All weeds should also be removed in this process.
Mulching with straw, black polythene and many other materials has been found beneficial in moisture conservation, in controlling weeds and some diseases.
Fertilizers used in Tomato Cultivation:
As the fruit production and quality depends upon nutrient availability and fertilizer application so balance fertilizer are applied as per requirement. The nitrogen in adequate quantity increases fruit quality, fruit size, color and taste. It also helps in increasing desirable acidic flavor. Adequate amount of potassium is also required for growth, yield and quality. Mono Ammonium Phosphate (MAP) may be used as a starter fertilizer to supply adequate phosphorus during germination and seedling stages. Calcium availability is also very important to control soil pH and nutrient availability. Sandy soils will require a higher rate of fertilizer, and more frequent applications of these fertilizers due to increased leaching of essential nutrients. The seedlings are sprayed with starter solution of micronutrient. Before planting farm yard manure @ 50 ton per hectares should be incorporated. Normally tomato crop requires 120kg Nitrogen (N), 50kg Phosphorus (P2O5), and 50kg Potash (K2O). Nitrogen should be given in split doses. Half nitrogen and full P2O5 is given at the time of transplanting and remaining nitrogen is given after 30 days and 60 days of transplanting. Soil and tissue analyses should be taken throughout the growing and production season to insure essential nutrients are in their proper amounts and ratios. Tissue analysis of a nutritionally sufficient plant will show the following nutrient status:
In the present situation it has been realized that the use of inorganic fertilizers should be integrated with renewable and environmental friendly organic fertilizers, crop residues and green manures.