بررسی پاسخ برخی صفات رویشی، کیفی و کمی نشاء و گیاه کامل گوجه‌فرنگی به نوع بستر کاشت و کود

به‌منظور بررسی پاسخ برخی صفات رویشی، کیفی و کمی نشاء و گیاه کامل گوجه‌فرنگی (solanum lycopersicum) به نوع بستر و کود، آزمایشی به‌صورت فاکتوریل در قالب طرح بلوک‌های تصادفی با سه تکرار در شهرستان میناب استان هرمزگان در سال 1399 انجام شد. فاکتور اول شامل چهار نوع بستر کشت نشاء (کوکوپیت + پیت‌ماس، کوکوپیت + پرلیت، کوکوپیت + ورمی‌کمپوست، کوکوپیت + دیت پیت) و فاکتور دوم شامل پنج سطح کود (npk، کود زیستی فسفوزیست، اسیدهیومیک و جلبک دریایی) بود. نتایج حاصل از آزمایش گلخانه‌ای نشان داد که نوع بستر کاشت و کود اثر معنی‌دار بر صفات نشاء دارد. نتایج اثر اصلی عوامل آزمایش نشان داد که بیش‌ترین تعداد برگ و وزن خشک ریشه نشاء در حضور بستر کوکوپیت + ورمی‌کمپوست به‌دست آمد. کاربرد کود در هر بستر باعث بهبود صفات نشاء شد و کودهای آلی و زیستی در این رابطه کاراتر بودند. به‌طوری‌که بیش‌ترین ارتفاع نشاء در بستر کوکوپیت + ورمی‌کمپوست و کاربرد کود جلبک و بیش‌ترین وزن تازه و حجم ریشه در حضور همین بستر و کاربرد کود فسفوزیست اندازه‌گیری شد. نتایج پژوهش مزرعه‌ای نشان داد که صفات ارزیابی‌شده تحت تاثیر نوع بستر کشت نشاء و تغذیه گیاه در مزرعه قرار می‌گیرد و نشاء‌های به‌دست آمده از بسترهایی که منجر به بهبود این صفات شده‌اند پس از انتقال به زمین اصلی به دلیل رشد رویشی بهتر، این برتری را تا زمان تولید محصول حفظ کرده‌اند. نتایج نشان داد بیش‌ترین تعداد و عملکرد میوه، مواد جامد محلول و اسید آسکوربیک از نشا‌ء‌های تولیدشده در بستر کوکوپیت + ورمی‌کمپوست و کاربرد کودهای آلی به‌دست آمد.

investigating the response of some vegetative, qualitative and quantitative traits of tomato transplants and whole plants to the substrate types and fertilizers

to investigate the response of transplant and whole plants of tomato (solanum lycopersicum) to the type of substrate and fertilizer, a factorial experiment was conducted as a randomized block design in minab city of hormozgan province with three replications. the first factor included four types of substrates and the second factor included five fertilizers levels. the results of the greenhouse experiment showed that the substrate type and fertilizer had a significant effect on the transplant traits. the results showed that the maximum leaf number and root dry weight of transplants were obtained in the cocopeat + vermicompost substrate. in each substrate, fertilizers improved the transplant traits, and organic and biological fertilizers were more effective. thus, the maximum transplant height was determined in the cocopeat + vermicompost with algae fertilizer, and the maximum fresh weight and root volume were measured in the same substrate but with phosphozite fertilizer. the results of the field study showed that the evaluated traits were affected by the substrate type and fertilizer, and the seedlings previously grown in the substrates that improved their traits, had better growth after transferring to the field. the results showed that the highest number and yield of fruit, total soluble solids, and ascorbic acid were obtained in the seedlings produced in cocopeat + vermicompost substrate and organic fertilizers. background and objective: transplants production in vegetables, are affected by the type of substrate and fertilizers. therefore, the purpose of this study was to investigate the response of some traits of tomato seedlings and whole plants to the substrate type and fertilizer. methods: factorial experiment was conducted as a randomized complete block design with three replications in both greenhouse and field conditions. the experimental factors included four substrates (cocopeat + peat moss, cocopeat + vermicompost, cocopeat + date peat and cocopeat + perlite as controls, all with a volumetric ratio of 50:50) and five levels of fertilizer including npk fertilizer, phosphozist biofertilizer containing phosphorus-fixing bacteria pseudomonas putida strain p13 and pantoea agglomerans strain p5, powdered humic acid, and acadian seaweed containing brown algae powder ascophyllum nodosum and the control. after planting tomato seeds in the seedling tray, and formation of true leaves, the transplants were sprayed with the mentioned fertilizers with a concentration of 0.1%. thirty eight days after planting, the seedling trays were transferred to the laboratory to evaluate traits including transplant height, leaf number, root fresh and dry weights, root length, root volume, and spad index. in the field experiment, transplants of the first experiment were planted in the research farm located in minab. after seedlings establishment, they were treated with the fertilizers used in the first experiment, including phosphozist, algae, humic acid, and npk, in the three stages of transplanting, before flowering and at the time of fruit formation, in the amount of 2 liters and 2 kg, 2 kg and 10 kg per hectare, respectively, with irrigation water. at the end of the field experiment, quantitative traits including the number of fruits per plant, average fruit weight and total fruit yield, and fruit qualitative traits including firmness, total soluble solids (tss), titratable acidity (ta) and, ascorbic acid content were measured. results: the results of greenhouse study showed the significant effect of the planting substrate on all traits of tomato transplant, while the effect of fertilizer type was significant only on the leaf number, root length and volume, and spad index. the highest values of these traits were often obtained in the cocopeat + vermicompost, while the lowest means of transplant vegetative traits were measured in the cocopeat + date