How to judge tomato seed quality
How to judge the quality of tomato seeds? The quality of tomato seeds mainly depends on seed plumpness, germination rate, germination energy and seed purity. (1) plumpness is the fullness of the seed. It is generally expressed by the weight of a thousand seeds, that is, the mass of 1000 seeds (grams). The greater the weight of a thousand seeds, the fuller the seeds. The average 1000-seed weight of tomato seeds is about 3.1 grams. (2) the germination rate refers to the percentage of germinable seeds in the sample seeds. The germination rate of tomato seeds is required to reach more than 90%. (3) germination power refers to the percentage of germinated seeds in the tested seeds within a specified number of days. It is the quantitative index of seed germination speed, uniformity and germination concentration. The required days for the determination of germination potential of tomato seeds are 5 days. (4) seed purity refers to the percentage of the number of plants in accordance with the characteristics of this variety in the total number of identified plants. The purity of tomato seeds is more than 95%. Hybrids are divided into primary species and secondary species. The purity of the primary seed is not less than 98.0%, and the purity of the secondary seed is not less than 95.0%. Click to get more tomato planting techniques click to get more vegetable planting techniques
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What method can prevent the rotten fruit of tomato in autumn
What method can prevent autumn tomato rotten fruit? Please guide the rotten fruit caused by cotton rot. First of all, there are smooth light brown spots on the top or shoulder of the fruit, sometimes with a small amount of white mold, and then gradually form concentric wheel-shaped spots, gradually become dark brown, the flesh under the skin also turns brown, and the whole fruit rotates and falls off in the later stage. Prevention and treatment.
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How to choose Tomato seed
How to choose tomato seeds? How to deal with the seeds? Please introduce and guide tomato seed selection methods can refer to the following methods: 1. Seed selection should be based on the growing season, cultivation methods, market demand to select appropriate tomato varieties. Good tomato varieties should have the characteristics of disease resistance, high yield and high quality. ...
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