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Influence of predecessor crops on seed quality and grain yield of winter wheat in the succeeding generations

By: Shukorov, M.G | Centro Internacional de Mejoramiento de Maiz y Trigo (CIMMYT) | Tbilisi (Georgia) 14-17 Jun 2004.
Contributor(s): Bedoshvili, D [ed.].
Material type: materialTypeLabelBookAnalytics: Show analyticsPublisher: Tbilisi (Georgia) CIMMYT : 2004Description: p. 336-337.Subject(s): Crop management | Grain yield | Harvesting | Quality | Rainfed farming | Seed production | Testing | Varieties | Wheat | CIMMYTDDC classification: 633.1147 Summary: Experiments were carried out under the rainfed conditions of Mountainous Shirvan of the Gobustan region in Azerbaijan. Identification of the best winter wheat predecessor crops for the rainfed conditions is of great importance, especially for seed production fields. Winter durum wheat Shark and bread wheat Kavkaz were planted after the following predecessors: black fallow, chickpea, silage sunf1ower and winter wheat. The experiment data is shown in the table below. The data shows that in the variants with predecessors black fallow and chickpea, Shark and Kavkaz were characterized by higher values of 1000-grain-weight (by 0.5-0.8 g and 0.2-1.4 g, respectively) and germination rate (by 2.7-3.1 % and 0.6-1.7%, respectively), as compared to the values obtained for the variants planted after sunflower and wheat. Seed of wheat treatments obtained from the first-year wheat harvest was planted for testing in. the fall. The seeds of Shark produced by the second crop, which was grown after black fallow and chickpea, were found to have field germination as high as 84.8 and 85.0%, respectively, i.e. 2.5-3.2% higher as compared with the other variants. Germination rates of Kavkaz for the treatments with black fallow and chickpea were 87.3% and 86.3%, i.e. higher for 2.8% and 3.8% than the other variants, respectively. The best results in terms of the yield compo- nents and grain yield were observed for wheat planted after black fallow. When planted after the fallow, Shark yielded 0.2-0.3 ton/ha more, while Kavkaz 0.3-0.5 ton/ha more as compared with the variants with other predecessors. The highest yield after fallow can be explained by accumulation of moisture by black fallow, establishing favorable conditions for producing high grain yield of good quality. Seeds of both varieties harvested from the second wheat crop grown after black fallow and chickpea maintained higher 1000-grain weight and germination rate. l000-grain weight of Shark for the treatment with preceding black fallow and chickpea were equal to 50.5g and 49.6 g, respectively, while that of Kavkaz to 46.1 and 46.5 g, respectively. These values exceeded those of the treatment with "continuous wheat" for 0.9-1.3 9 and 1.1-1.5 g respectively. In terms of germination, seeds of Shark, harvested from the "black fallow" field, exceeded those of the "continuous wheat" by 1.0-2.0%, while the seeds of Kavkaz by 1.0-1.6%. The study provided evidence that the influ- ence of the various predecessors is leveled in the second year wheat crop. Thus, black fallow has been found to be the best predecessor for winter wheat grain and seed production fields under the rainfed conditions of Mountainous Shirvan.Collection: CIMMYT Publications Collection
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Conference proceedings CIMMYT Knowledge Center: John Woolston Library

Lic. Jose Juan Caballero Flores

 

CIMMYT Publications Collection 633.1147 BED (Browse shelf) 1 Available 3U630072
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Abstract only

Experiments were carried out under the rainfed conditions of Mountainous Shirvan of the Gobustan region in Azerbaijan. Identification of the best winter wheat predecessor crops for the rainfed conditions is of great importance, especially for seed production fields. Winter durum wheat Shark and bread wheat Kavkaz were planted after the following predecessors: black fallow, chickpea, silage sunf1ower and winter wheat. The experiment data is shown in the table below. The data shows that in the variants with predecessors black fallow and chickpea, Shark and Kavkaz were characterized by higher values of 1000-grain-weight (by 0.5-0.8 g and 0.2-1.4 g, respectively) and germination rate (by 2.7-3.1 % and 0.6-1.7%, respectively), as compared to the values obtained for the variants planted after sunflower and wheat. Seed of wheat treatments obtained from the first-year wheat harvest was planted for testing in. the fall. The seeds of Shark produced by the second crop, which was grown after black fallow and chickpea, were found to have field germination as high as 84.8 and 85.0%, respectively, i.e. 2.5-3.2% higher as compared with the other variants. Germination rates of Kavkaz for the treatments with black fallow and chickpea were 87.3% and 86.3%, i.e. higher for 2.8% and 3.8% than the other variants, respectively. The best results in terms of the yield compo- nents and grain yield were observed for wheat planted after black fallow. When planted after the fallow, Shark yielded 0.2-0.3 ton/ha more, while Kavkaz 0.3-0.5 ton/ha more as compared with the variants with other predecessors. The highest yield after fallow can be explained by accumulation of moisture by black fallow, establishing favorable conditions for producing high grain yield of good quality. Seeds of both varieties harvested from the second wheat crop grown after black fallow and chickpea maintained higher 1000-grain weight and germination rate. l000-grain weight of Shark for the treatment with preceding black fallow and chickpea were equal to 50.5g and 49.6 g, respectively, while that of Kavkaz to 46.1 and 46.5 g, respectively. These values exceeded those of the treatment with "continuous wheat" for 0.9-1.3 9 and 1.1-1.5 g respectively. In terms of germination, seeds of Shark, harvested from the "black fallow" field, exceeded those of the "continuous wheat" by 1.0-2.0%, while the seeds of Kavkaz by 1.0-1.6%. The study provided evidence that the influ- ence of the various predecessors is leveled in the second year wheat crop. Thus, black fallow has been found to be the best predecessor for winter wheat grain and seed production fields under the rainfed conditions of Mountainous Shirvan.

English

0409|AGRIS 0401|AL-Wheat Program

Juan Carlos Mendieta

CIMMYT Publications Collection

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