Optimization of Winter Wheat Nutrition

Response of winter wheat to foliar sprays with Potassium Nitrate is studied in field experiments conducted in drought-affected areas.

IPNI-2015-RUS-6

01 Feb 2015

Project Description


Location: Volgograd Oblast, Southern Federal District.
Objectives:
    1) Improve winter wheat nutrition on southern chernozems and light chestnut soils.
    2) Optimize fertilizer expenditures when growing winter wheat on southern chernozems and light chestnut soils.
Goals:
    1) Study the response of winter wheat to foliar sprays with Potassium Nitrate.
    2) Adjust the number of sprays with Potassium Nitrate and its concentrations.
    3) Study the effect of foliar spray with Potassium Nitrate on grain quality of winter wheat.
The following fertilizer treatments are studied (N, P2O5 and K2O are indicated):
1) Control (zero fertilizer)
2) N16P20S14 (16-20-0-14 on southern chernozem) and N13P13K13 (16-16-16 on chestnut soil) at planting

3) PK + N34 (AN topdressing in early spring)


4) PK + N34 (AN topdressing in early spring) + N30 (late-season foliar spraying with Urea at heading – flowering stage)
5) PK + N2.4K8.1 (1st foliar spraying with KNO3: 5% solution at BBCH 25 stage) + N1.4K4.8 (2nd foliar spraying with KNO3: 3% solution at BBCH 31 stage)
6) PK + N2.4K8.1 (1st foliar spraying with KNO3: 5% solution at BBCH 25 stage) + N1.4K4.8 (2nd foliar spraying with KNO3: 3% solution at BBCH 31 stage) + N1.4K4.8 (3rd foliar spraying with KNO3: 3% solution at BBCH 50 stage)
7) PK + N3.4K11.3 (1st foliar spraying with KNO3: 7% solution at BBCH 25 stage) + N2.4K8.1 (2nd foliar spraying with KNO3: 5% solution at BBCH 31 stage)
8) PK + N3.4K11.3 (1st foliar spraying with KNO3: 7% solution at BBCH 25 stage) + N2.4K8.1 (2nd foliar spraying with KNO3: 5% solution at BBCH 31 stage) + N1.4K4.8 (3rd foliar spraying with KNO3: 3% solution at BBCH 50 stage)
Measurements in field experiments include: initial soil fertility status, crop phenology, yield components, grain quality, grain yield, dry matter accumulation and nutrient removal in the harvested and unharvested portion of crop.