evaluation of chemical control of broad-leaved weeds in new seeded alfalfa (medicago sativa l.)

نویسندگان

فریبا میقانی

استادیار، بخش تحقیقات علف های هرز، مؤسسه تحقیقات گیاهپزشکی کشور، تهران – ایران آژنگ جاهدی

مربی پژوهش، مرکز تحقیقات کشاورزی همدان، همدان - ایران سید محمد میروکیلی

مربی پژوهش، مرکز تحقیقات کشاورزی یزد، یزد - ایران پرویز شیمی

مربی پژوهش، بخش تحقیقات علف های هرز، مؤسسه تحقیقات گیاهپزشکی کشور، تهران – ایران محمد علی باغستانی

چکیده

in order to study of the efficacy of herbicides in weed control of new seeded alfalfa, an experiment was conducted in hamedan and yazd cities, iran during 2009-2010. the treatments were bentazone (bazagran) (sl 48%) two, three and four l.ha-1, 2,4-db (butress) (ec 42.3%) 2.5, 2.8, 3.1 and 3.5 l.ha-1, imazethapyr (pursuit) (sl 10%) 0.4, 0.7 and one l/ha and without herbicide control treatment. the herbicides effect on alfalfa biomass and the biomass and density of weeds was studied during three cuttings. in yazd, 2,4-db 3.5 l.ha-1 was the best treartment for controlling weeds and increasing alfalfa biomass. 2,4-db 3.5 and 2.8 l.ha-1 controled the density and biomass of malva and lactuca to 100 and 88 percent, respectively. in hamedan, herbicides treatments had no phytotoxocity on alfalfa. only bentazone caused chlorosis in alfalfa that recovered that after one to two weeks. 2,4-db not only was suitable in control ling broad leaves weeds, but also was successful in field bindweed control. overall. 2,4-db seems to be an efficient herbicide

برای دانلود باید عضویت طلایی داشته باشید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Cultivation of Alfalfa (medicago Sativa L)

Madicago sativa Linn, commonly known as 'Alfalfa', is a tonic plant rich in proteins, minerals, enzymes and vitamins, Bulk quantity of the whole plant is required in the pharmaceutical industries especially in homoecopathic pharmacies, Hence, there is a great need to cultivate this plant for sustained supply of the drug. Use of good and adequate phosphatecontaining farm yard manure, timely irri...

متن کامل

Abstract Withholding alfalfa (Medicago sativa L.) irri-

Withholding alfalfa (Medicago sativa L.) irrigations during the summer, a practice referred to as summer irrigation termination (SIT), can conserve substantial amounts of water in long-season desert environments; however, plant mortality associated with SIT may be substantial. Proper timing of re-irrigation is critical for minimizing mortality and yield reductions following SIT. Procedures that...

متن کامل

Integrative Analysis of Transgenic Alfalfa (Medicago sativa L.) Suggests New Metabolic Control Mechanisms for Monolignol Biosynthesis

The entanglement of lignin polymers with cellulose and hemicellulose in plant cell walls is a major biological barrier to the economically viable production of biofuels from woody biomass. Recent efforts of reducing this recalcitrance with transgenic techniques have been showing promise for ameliorating or even obviating the need for costly pretreatments that are otherwise required to remove li...

متن کامل

Detection of Norspermidine and Norspermine in Medicago sativa L. (Alfalfa).

Shoot meristem tissues of alfalfa, Medicago sativa L., were found by high performance liquid chromatography analyses to contain the uncommon polyamines, norspermidine and norspermine. The chemical structures of norspermidine and norspermine, purified from alfalfa, were confirmed by comparison of mass spectra with those from authentic standards. The discovery of norspermidine and norspermine in ...

متن کامل

Phenotypic Diversity of Alfalfa (medicago Sativa L.) Germplasm

Alfalfa (Medicago sativa L.) is one of the most important perennial forage crops on cultivated fields in the world. Agronomical interests for this crop are based on its numerous advantageous characteristics such as (1) high yield potential and suitable feeding value, (2) different methods of utilisation green mass, hay, silage, greenchop, briquette, pellets, etc., (3) favourable environmental i...

متن کامل

Beta-Amylases from Alfalfa (Medicago sativa L.) Roots.

Amylase was found in high activity (193 international units per milligram protein) in the tap root of alfalfa (Medicago sativa L. cv. Sonora). The activity was separated by gel filtration chromatography into two fractions with molecular weights of 65,700 (heavy amylase) and 41,700 (light amylase). Activity staining of electrophoretic gels indicated the presence of one isozyme in the heavy amyla...

متن کامل

منابع من

با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید


عنوان ژورنال:
به زراعی کشاورزی

جلد ۱۴، شماره ۱، صفحات ۴۳-۵۵

کلمات کلیدی
[ ' i n o r d e r t o s t u d y o f t h e e f f i c a c y o f h e r b i c i d e s i n w e e d c o n t r o l o f n e w s e e d e d a l f a l f a ' , ' a n e x p e r i m e n t w a s c o n d u c t e d i n h a m e d a n a n d y a z d c i t i e s ' , ' i r a n d u r i n g 2 0 0 9 ' , ' 2 0 1 0 . t h e t r e a t m e n t s w e r e b e n t a z o n e ( b a z a g r a n ) ( s l 4 8 % ) t w o ' , ' t h r e e a n d f o u r l . h a ' , 1 , 2 , 4 , ' d b ( b u t r e s s ) ( e c 4 2 . 3 % ) 2 . 5 ' , ' 2 . 8 ' , ' 3 . 1 a n d 3 . 5 l . h a ' , 1 , ' i m a z e t h a p y r ( p u r s u i t ) ( s l 1 0 % ) 0 . 4 ' , ' 0 . 7 a n d o n e l / h a a n d w i t h o u t h e r b i c i d e c o n t r o l t r e a t m e n t . t h e h e r b i c i d e s e f f e c t o n a l f a l f a b i o m a s s a n d t h e b i o m a s s a n d d e n s i t y o f w e e d s w a s s t u d i e d d u r i n g t h r e e c u t t i n g s . i n y a z d ' , 2 , 4 , ' d b 3 . 5 l . h a ' , ' 1 w a s t h e b e s t t r e a r t m e n t f o r c o n t r o l l i n g w e e d s a n d i n c r e a s i n g a l f a l f a b i o m a s s . 2 ' , 4 , ' d b 3 . 5 a n d 2 . 8 l . h a ' , ' 1 c o n t r o l e d t h e d e n s i t y a n d b i o m a s s o f m a l v a a n d l a c t u c a t o 1 0 0 a n d 8 8 p e r c e n t ' , ' r e s p e c t i v e l y . i n h a m e d a n ' , ' h e r b i c i d e s t r e a t m e n t s h a d n o p h y t o t o x o c i t y o n a l f a l f a . o n l y b e n t a z o n e c a u s e d c h l o r o s i s i n a l f a l f a t h a t r e c o v e r e d t h a t a f t e r o n e t o t w o w e e k s . 2 ' , 4 , ' d b n o t o n l y w a s s u i t a b l e i n c o n t r o l l i n g b r o a d l e a v e s w e e d s ' , ' b u t a l s o w a s s u c c e s s f u l i n f i e l d b i n d w e e d c o n t r o l . o v e r a l l . 2 ' , 4 , ' d b s e e m s t o b e a n e f f i c i e n t h e r b i c i d e ' ]

میزبانی شده توسط پلتفرم ابری doprax.com

copyright © 2015-2023