The effect of NPK foliar fertilization on yield and macronutrient content of grain in wheat under Kostanai-Kazakhstan conditions

Abstract

The objective of this research were to determine the effects of foliar fertilization (20% N: 20% P2O5: 20% K2O) at different growth stages on yield and nutrient contents of spring wheat (Triticum aestivum L.) and to reveal proper application time and frequency in Kostanai-Kazakhstan conditions. The field experiment was conducted according to randomized plot design with four replications with a seeding rate of 500 seed per m 2 on the plots having a size of 5.0 m length and 4.0 m width. Foliar applications of the fertilizer at 1%rate were done at tillering (T), stem elongation (S), heading (H) stages of wheat and the combinations of these stages (T+S, T+H, S+H and T+S+H). Wheat yield values varied between the lowest 1.32 t/ha in the control and the highest 2.14 t/ha in the foliar fertilization done at tillering and steam elongation stages (T+S). According to control treatment, increases in grain yields by the foliar fertilization done at the different growth stages were determined as follows; T+S (61.7%) > T+H (47.4%) > T+S+H (41.8%) > S+H (41.6%) > T (38.5%) > S (19.1%) > H (16.6%). There was no significant difference among the macronutrient contents in grain obtained by the foliar fertilization at the different growth stages. N, P and K contents in the grain were close the values cited in the literatures. Ca and Mg contents deficiency in grain were determined due to the acidic soil pH condition of Kostanai-Kazakhstan. Nitrogen, P, K and Ca uptakes by grain, except Mg, generally increased with the all application of foliar fertilization. When the foliar fertilization was done at T+S stages, the highest macro nutrient uptakes by grain in wheat were generally obtained. This research indicated that the first foliar fertilization should be applied at the tillering stage and the best foliar fertilization management for high grain yield and nutrient uptake should be done two times at the combination of tillering and stem elongation stages.

Morphophysiological response of young Frantoio olive tree under different fertilizer types in sierozem with surface drip irrigation

“…In addition, it was determined that planting density affected leaf nutrient contents of olive tree at all season and fertilization types compared to control treatments, and also plant density 2 (4 m x 2 m) treatments resulted in the highest leaf nutrient contents in all seasons and fertilization types. Numerous studies have reported that inorganic NPK fertilizer increased growth in some species by enhancing nitrogen, phosphorus, potassium and magnesium uptake (Shehu, 2014;Gülser et al, 2019;Alimkhanov et al, 2021).…”

Yield of sugar beet and changes in phosphorus fractions in relation to long term P fertilization in chestnut soil of Kazakhstan

“…Similar results were obtained by Gunarto et al (1985) and Yousaf et al (1999) on several vegetable crops. Numerous studies have reported that inorganic NPK fertilizer increased growth in some species by enhancing nitrogen, phosphorus and potassium uptake (Gülser et al, 2019). In the light of above presented facts, the key problem concerns yield forming functions of P. Effect of tested fertilizing treatments were variable, depending on the P doses.…”

Responses of potato (Solanum tuberosum L.) varieties to NPK fertilization on tuber yield in the Southeast of Kazakhstan

“…Similar results were obtained by Gunarto et al (1985), Yousaf et al (1999), Magnusson (2002) and Li et al (2019) on several vegetable crops. Numerous studies have reported that inorganic NPK fertilizer increased growth in some species by enhancing nitrogen, phosphorus and potassium uptake (Shehu, 2014;Gülser et al, 2019). The yield of potatoes is a function of the number of tubers produced and the average weight per tuber.…”