The publication of this Handbook was supported by the Russian Federation

echnology "NTO3-3"
 is designed for reclamation of  saline clayey soils for rice cultivation. It 
is commonly known that non-saline clayey soils are the best for rice cultivation, as they have a 
high potential fertility and low infiltration capacity that saves on irrigation water and favours 
the maximal accumulation of  nutrients and organic compounds. The ‘NTO3-3’ reclamation 
of  salt-affected clayey soils is performed with the use of  combined chemical agents (SACA, 
AS and PFCA, see Box 1) and the following technical measures. Firstly, the soil undergoes an 
early spring ploughing to a depth of  20-22 cm accompanied by soil tillage with a disc harrow. 
After that, the soil is levelled and mineral fertilizers are applied: N - 500 kg/ha, P2O5 - 240 
kg / ha and also SACA - 5 t/ha. Then, rice seeds are sown after their pre-treatment with 
2.7% AS solution at a rate of  20-25 l/t for a period of  30-120 minutes. The process is 
completed by PFCA application at a rate of  200 kg/ha to the soil surface after rice seeds are 
sown. Subsequently, paddy fields are flooded to saturation level and irrigated accordingly.