Investigating the effect of bush condensation in different moisture regimes on the qualitative and quantitative characters of sunflower in circumstances of sistan
Message:
Abstract:
In order to investigate the effect of aridity tension, an experiment was conducted under the Sistan circumstances in the form of once _shatterd acacia based on whole random blocks, with four replications in the agricultural and natural resources research station of sistan in the crop year 88-89.the main cause of aridity tension included 4 levels:S1-irrigation in5-7 leaves, asterring, emergence of full head,50% flowering and seed filling, S2- irrigation cut in 5-7 leaves, S3-irrigation cut in5-7 leaves, asterring, emergence of full head,, S4-irrigation cut in 5-7 leaves, irrigation cut in 50% flowering and seed filling.The peripheral factor was in 3 levels(8,10,12 bushes per square meter).The results of characters variance analysis showed that the effect of ariadity tension in developmental stages of the plant on morphological characters such as: height of stem, diameter of stem diameter of the head, :the number of seeds in the head, seed yield and oil yield, was one percent different in terms of statistical significance. The effect of loush condensation on other measured characters except for the bush height showed a statistically significant difference. the interactive effects of aridity tension and bush condensation on other measured characters except for the bush height and the oil percentage did not show any statistically significant difference. The highest seed yield in this experience was gaincd in treatment S1 with the average of 2314 kilograms a hectare and the lowest seed yield was gained in treatment S3whih the average of 810 kilograms a hectare. With the increase in bush condensation, the seed yield showed a significant in crease in proportion to low bush condensation, despite the decrease in yield components. that was in a way which the highest value was gained in 12-bush condensation per a square meter with the average of2141 kilograms a hectare. The simple correlation results showed that the seed yield with the number of seeds in the head, had the highest correlation coefficient. from all these results it could be concluded that irrigation before and after flowering with 12-bush condensation per a square meter, in recommended for Sistan circumstances.
Language:
Persian
Published:
Journal of New Finding in Agricultural, Volume:7 Issue: 3, 2013
Pages:
227 to 240
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