EFFECT OF DIFFERENT LEVELS OF NPK FERTILIZERS AND GIBBERELLIN ON GROWTH AND YIELD PRODUCTIVITY OF SPRING WHEAT UNDER GROWN CONDITION OF KAPISA, AFGHANISTAN
2025
Jahish F. | Dmitrevskaya I.I. | Zharkikh O.A.
The experiments were carried out at the experimental farm of Agriculture faculty, Alberoni University, Kapisa, Afghanistan, to study the effect of different levels of nitrogen, phosphorus and potassium (NPK) fertilizers and gibberellin (G) doses on growth and yield of spring wheat during March-June 2022-2024. The experiment was set out on randomized complete block design with 3 replication and 12 treatments:T1 (Control), T2 (N0P0K0 + 100 ppm G), T3 (N0P0K0 + 200 ppm G), T4 (120-60-30 kg/ha NPK), T5 (120-60-30 kg/ha NPK + 100 ppm G), T6 (120-60-30 kg/ha NPK + 200 ppm G), T7 (160-90-60 kg/ha NPK), T8 (160-90-60 kg/ha NPK + 100 ppm G), T9 (160-90-60 kg/ha NPK + 200 ppm G), T10 (200-120-90 kg/ha NPK), T11 (200-120-90 kg/ha NPK + 100 ppm G) and T12 (200-120-90 kg/ha NPK + 200 ppm G). Results showed that application of various levels of NPK fertilizers and G with a few exceptions significantly increased the growth and yields of spring wheat. Maximum plant height (106.3 cm) was recorded with application of 200-120-90 kg/ha NPK + 200 ppm G, while the highest dry matter/plant (5.8 g), 1,000-grain weight (47.1 g), number of grain/spike (48.7), grain yield (4.51 t/ha) and straw yield (8.53 t/ha) were recorded with application of 160-90-60 kg/ha NPK + 200 ppm G.
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