Growth of Carnation Lemon (Citrus limonia osbeck) seedlings in different levels of rock dust

Abstract

The Cravo Limo (Citrus limonia Osbeck) is the most used rootstock in Brazil and the world, due to its main characteristic of resistance to water stress, and despite being originally from China, it has adapted very well to Brazilian soils. In a post-war world (Russia and Ukraine), there was a need to improve studies on fertilizers available in the country, namely rock dust (PR), which there are few studies on. With this comes the need to evaluate the development of the carnation lemon tree, using rock dust fertilization. The experiment was carried out in a randomized block design with seven treatments with 25 replications, with two controls and different levels of fertilization with PR from 25 to 125%, all treatments filled with sandy soil and commercial substrate, totaling 175 lemon seedlings. clove. The preparation of treatments was carried out seven months before transplanting the seedlings, due to the main characteristic of slow release of nutrients from PR. The evaluations were carried out by measuring the plants, measuring height in centimeters and number of leaves counted one by one considering those fully expanded, and after the first seedling reached 15 cm in height, the diameter measured in millimeters began to be measured until reaching the point of grafting. The results obtained through the height and number of leaves show that treatment two with 25% rock dust developed better, and reached the grafting point earlier than the other treatments