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- Title
STRUCTURAL-AGGREGATE COMPOSITION AND SOIL WATER RESISTANCE BASED ON TILLAGE REGIMES IN SOUTHEAST KAZAKHSTAN.
- Authors
ZHAPAYEV, R. K.; KUNYPIYAEVA, G. T.; OSPANBAYEV, Z. H.; SEMBAYEVA, A. S.; IBASH, N. D.; MUSTAFAEV, M. G.; KHIDIROV, A. E.
- Abstract
The promotion and rational development of drylands employed two tillage regimes (plowing to 20-22 cm and no-till) during the spring wheat and barley cultivation in Southeast Kazakhstan. The results established that the no-till scheme contributed to forming an excellent aggregate state of the arable soil layer for spring wheat and barley (65%-69%). The water-resistant aggregates were the highest with no-tillage (19.3%-21.8%), indicating the unsatisfactory water resistance of the soil structure. Enhancing the water-resistant aggregates requires using organic fertilizers to improve the establishment of perennial grasses, green manuring, and cover crops. No-till system inclined to boost the optimal soil density from a loose and slightly compact state of 1.19-1.23 g/cm3 to a dense 1.32-1.39 g/cm3. According to crop cultivar and tillage methods, the spring wheat and barley grain yield varied between 2.84 and 3.89 t/ha. High grain yield came from the spring barley cultivar Symbat. Spring showed promising performance when the plowing level was 20-22 cm and inferior only by 0.25 and 0.15 t/ha with no-till. Based on the two-factor analysis of variance, the cultivar contribution to the spring wheat and barley grain yield buildup depended on the shares of crop season of the research (year - environment) (40.9%-62.2%) and the tillage regimes (22.4%-32.2%). The grain yield formation was more dependent on the studied crops and their cultivars, and the dependence increased over the crop seasons due to weather conditions during the crop period.
- Subjects
KAZAKHSTAN; SOIL moisture; TILLAGE; WHEAT; SOIL composition; GROWING season
- Publication
SABRAO Journal of Breeding & Genetics, 2023, Vol 55, Issue 5, p1821
- ISSN
1029-7073
- Publication type
Article
- DOI
10.54910/sabrao2023.55.5.33