Antagonistic effects of potassium and sodium with different ratios of organic matter and pumice on the cultivation of nectarine split root

ABSTRACT: 

The use of new techniques, such as soilless cultivation and split root system in the field of modern agriculture allows for the better and more accurate control of plant nutrition. In this research, the antagonistic effects of potassium and sodium with different ratios of organic matter and pumice were investigated in the cultivation of nectarine split root; and the experiment was conducted in the form of a Randomized Complete Block design with five treatments and four replications. The treatments included 100% pumice and 0% organic matter, 75% pumice and 25% organic matter, 50% pumice and 50% organic matter, 0% pumice and 100% organic matter, and without culture (control). The results showed that the best potassium uptake in the growth medium contained 75% pumice and 25% organic matter as well as 50% pumice and 50% organic matter where the plant showed the best response and a higher vegetative level. In this environment, the ratio between the elements was such that no adverse effect was imposed on the absorption of each other by the plant.