نوع مقاله : مقاله پژوهشی
نویسندگان
1 دانش آموخته کارشناسی ارشد زراعت، دانشگاه صنعتی شاهرود، شاهرود، ایران
2 گروه زراعت و اصلاح نباتات، دانشگاه صنعتی شاهرود، شاهرود، ایران
3 دانشجوی دکترای اگرواکولوژی، گروه زراعت، دانشگاه زابل، زابل، ایران
4 مجتمع آموزش عالی گناباد
چکیده
کلیدواژه‌ها
عنوان مقاله [English]
نویسندگان [English]
In order to study the effects of marjoram extract on soybean (Glycine max), an experiment was conducted in research field of Shahroud University as factorial based on completely randomized blocks in 3 replications. Experimental treatments included marjoram extract in 5 levels (no pretreatment, pretreatment with extract of 40 and 60 percent each for 6 and 9 hours) as the first factor and foliar application of extract in 3 levels (distilled water spraying, extract spraying of 40 and 60 percent) as the second factor. The highest dry weight of leaf (253.3 g.m-2) and stem (279.0 g.m-2) was obtained in pre-treatment with concentration of 40% for 6 hours with foliar application of 40% extract. The maximum leaf area index and number of secondary lateral branches, was obtained with foliar application of 40% marjoram extract that caused a significant increase by 8.8 and 18.3 percent compared with control respectively. The maximum carotenoid (0.029 mg.g-1 dry weight) and total chlorophyll (1.12 mg.g-1 dry weight) was observed in pre-treatment with concentration of 60% for 9 hours in combination with foliar application of 60% extract. In general, it can be said that the use of marjoram extract, while increasing the growth characteristics and yield of crops, can also reduce the environmental pollution.
کلیدواژه‌ها [English]
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