The results of a study with microelements and radioactive isotopes conducted at the Ukrainian Scientific Research Institute of Vegetable and Potato Cultivation The use of tracer elements, polymers, and radioactive isotopes in agriculture

Bondarenko, G.L.

Ukrainsk Akad Sel Skokhoz Nauk Kiev 1: 221-226


Accession: 025919901

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A study was made of the effect of a pre-sowing treatment of tomato seeds with a 1% solution of MnSO4, the age of the plants, and moisture in the soil on the absorption of P32 by potatoes, tomatoes, and onions. The experiments were carried on in soil cultures and under field conditions. The pre-sowing soaking of tomato seeds for 2 days in MnSO4 stimulated germination, accelerated growth and plant development, increased yield, fruit quality and vitamin C content. It also increased the capability of the leaves to retain moisture which improved the water regime of the plants and decreased susceptibility to crown rot. Treatment with manganese increased the intensity of P32 absorption by the roots. In potatoes and onions the maximum P32 absorption occurred during early growth, and decreased with age. In degenerated potato plants and in plants growing under conditions of decreased moisture, p32 absorption was lower than in healthy plants and in plants growing with sufficient moisture in the soil. The conclusion is that decreased soil moisture in the period between budding and blooming results in a change in the physiological processes in the direction characteristic of degeneration in the whole plant or in the middle level of the plant top.