The Effect of Solarization and Compost on the amount of Photosynthesis, the Length of Stem, andFruit Weight in Tomato (Lycopersicumesculentum)

The present study examined the separate and collective impacts of using compost and solarization on tomato (Lycopersicumesculentum). Tomato cultivation area was solarized for 14 hours a day over a 2 months period in order to increase the soil temperature beyond 60 degree Centigrade. At the end of this period, the compost which was created using different strategies was added into the 20 cm depth of the soil. The purpose of solarization in this experiment was removing weeds and pests in an attempt to decrease the competitive ability and increase the fruit growth, plant germination, and photosynthesis in a randomized complete block factorial design. Accordingly, by removing the weeds, the amount of shadowing on the plant was decreased and this increased the photosynthesis. The purpose for using compost was increasing the growth and nutritional abilities of the plants by means of the organic materials. In other words, the overall purpose was operationalizing an experiment in an organic farm. The results indicated that the fruit weigh significantly increased. The plant yield also increased up to 37% which can be attributed to the removing of the weeds by means of solarization. This way, the weed shadowing is removed and due to the absence of another weed, there is no competition between the plant and the weed. Using compost significantly increased the photosynthesis and plant growth. The existence of nutrients, organic materials, and organisms such as ectinomisets and protozas, which enhance the stabilization process, made the soil nutritious. Destruction of pathogens can be considered as one of the significant aspects in the process of producing compost. The process of producing compost and its collective function with solarization omitted pathogens.