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برزعلی, محمد, دینکو, فاطمه, انگجی, سید جواد, دلخوش, بابک. (1397). بررسی اثر برهم‌کنش روش خاک‌ورزی، رطوبت اولیه خاک و زمان مصرف علف‌کش‌ تری‌فلورآلین بر کنترل علف‌های هرز و عملکرد پنبه (Gossypium hirsutum L.). سامانه مدیریت نشریات علمی, 31(4), 21-49. doi: 10.22092/aj.2018.120565.1247
محمد برزعلی; فاطمه دینکو; سید جواد انگجی; بابک دلخوش. "بررسی اثر برهم‌کنش روش خاک‌ورزی، رطوبت اولیه خاک و زمان مصرف علف‌کش‌ تری‌فلورآلین بر کنترل علف‌های هرز و عملکرد پنبه (Gossypium hirsutum L.)". سامانه مدیریت نشریات علمی, 31, 4, 1397, 21-49. doi: 10.22092/aj.2018.120565.1247
برزعلی, محمد, دینکو, فاطمه, انگجی, سید جواد, دلخوش, بابک. (1397). 'بررسی اثر برهم‌کنش روش خاک‌ورزی، رطوبت اولیه خاک و زمان مصرف علف‌کش‌ تری‌فلورآلین بر کنترل علف‌های هرز و عملکرد پنبه (Gossypium hirsutum L.)', سامانه مدیریت نشریات علمی, 31(4), pp. 21-49. doi: 10.22092/aj.2018.120565.1247
برزعلی, محمد, دینکو, فاطمه, انگجی, سید جواد, دلخوش, بابک. بررسی اثر برهم‌کنش روش خاک‌ورزی، رطوبت اولیه خاک و زمان مصرف علف‌کش‌ تری‌فلورآلین بر کنترل علف‌های هرز و عملکرد پنبه (Gossypium hirsutum L.). سامانه مدیریت نشریات علمی, 1397; 31(4): 21-49. doi: 10.22092/aj.2018.120565.1247

بررسی اثر برهم‌کنش روش خاک‌ورزی، رطوبت اولیه خاک و زمان مصرف علف‌کش‌ تری‌فلورآلین بر کنترل علف‌های هرز و عملکرد پنبه (Gossypium hirsutum L.)

پژوهش های کاربردی زراعی
مقاله 2، دوره 31، شماره 4 - شماره پیاپی 121، دی 1397، صفحه 21-49    اصل مقاله (764.4 K)
نوع مقاله: مقاله پژوهشی
شناسه دیجیتال (DOI): 10.22092/aj.2018.120565.1247
نویسندگان
محمد برزعلی* 1؛ فاطمه دینکو2؛ سید جواد انگجی3؛ بابک دلخوش3
1بخش تحقیقات زراعی و باغی، مرکز تحقیقات و آموزش کشاورزی و منابع طبیعی استان گلستان، سازمان تحقیقات، آموزش و ترویج کشاورزی، گرگان، ایران.
2موسسه تحقیقات ثبت و گواهی بذر و نهال، سازمان تحقیقات، آموزش و ترویج کشاورزی، کرج، ایران.
3عضو هیئت علمی دانشکده کشاورزی دانشگاه آزاد اسلامی، واحد علوم و تحقیقات تهران
چکیده
این مطالعه در قالب آزمایش کرت‌های نواری به‌منظور بررسی تاثیرات برهمکنش عوامل خاک‌ورزی، میزان رطوبت اولیه خاک و زمان‌های مصرف علف‌کش‌ تری‌فلورآلین بر کنترل علف‌های هرز و عملکرد وش پنبه، در 4 تکرار در مزرعه‌آزمایشی در جنوب شرقی شهرستان علی‌آباد کتول استان گلستان در سال 1392 اجراء گردید. عوامل عمودی عبارت بودند از خاک‌ورزی در دو سطح استفاده از گاو آهن بشقابی و گاوآهن برگردان‌دار و رطوبت اولیه خاک تا عمق 24 سانتمیتری در دو سطح 12-14 و17-19 درصد، و عامل افقی را زمان مصرف علف‌کش تری‌فلورآلین از ماده تجاری 48 درصد در شش سطح: وجین دستی در طول دوره رشد گیاه پنبه، مصرف 5/1 لیتر در هکتار در زمان آبیاری اولیه قبل از کاشت و 1 لیتر همراه با اولین آب‌آبیاری در هفته ششم پس از کاشت، مصرف 5/1 لیتر در هکتار قبل از کاشت و 1 لیتر در هفته ششم پس از کاشت و اختلاط با خاک به‌وسیله کولتیواتور، مصرف 5/2 لیتر در هکتار پس از کاشت و قبل از ‌آبیاری و مصرف 5/2 لیتر در هکتار قبل از کاشت و مخلوط با خاک، و بدون کنترل تشکیل داد. برش‌دهی برهم کنش رطوبت اولیه خاک در هر سطح خاک‌ورزی نشان داد که تفاوت عمده بین سطوح مختلف رطوبت اولیه خاک به واکنش آن‌ها به نوع خاک‌ورزی اعمال شده بر می‌گشت و در سطح رطوبتی 17-19 درصد برتری معنی‌داری از نظر قطر متوسط وزنی ثانویه کلوخه، نسبت به سطح رطوبتی 12-14 درصد تحت خاک ورزی با گاوآهن بشقابی وجود داشت.
کلیدواژه‌ها
راندمان کنترل علف‌های هرز؛ شاخص توانایی تحمل رقابت؛ قطر متوسط وزنی کلوخه؛ کاهش عملکرد
عنوان مقاله [English]
Investigating interaction effect of different tillage methods, soil initial moisture level and trifluralin herbicide application time on weed control and cotton yield (Gossypium hirsutum L.)
نویسندگان [English]
Mohammad Barzali1؛ Fatemeh Dinkou2؛ Seyyed javad Angadji3؛ Babak Delkhoosh3
1Horticulture Crops Research Department, Golestan Agricultural and Natural Resources Research and Education Center, AREEO, Gorgan, Iran.
2Seed and Plant Certification and Registration Research Institute, AREEO, Karaj, Iran.
3Academic Staff of Agricultural College, IAU, Science and Research Branch, Teheran.
چکیده [English]
This study was set up as a factorial split block design in RCBD layout with 4 replications at a research farm in south east of Ali Abad Katool district in 2013 to investigate different tillage methods (T), soil initial moisture (M) and trifluralin application (W) effects on weed control and cotton lint yield. The main factors were two tillage methods (disk plow (T1) and moldboard plow (T2)) in a factorial combination with two soil moisture levels at 24 cm soil depth (12-14% (M1) and 17-19% (M2)). The sub-factor consisted of six trifluralin herbicide application times (hand hoeing (W1), PPI application of trifluralin at 1.5 lit/ha rate at the time of the first irrigation plus the herbicide application rate of 1 lit/ha with irrigation (herbigation) six weeks after planting (W2), PPI trifluralin application at 1.5 lit/ha and the application at 1 lit/ha with soil incorporation by cultivator six weeks after planting (W3), trifluralin application at 2.5 lit/ha after planting and prior to irrigation (W4) PPI application of trifluralin at 2.5 lit/ha with soil incorporation(W5) and check treatment where no weed control was undertaken (W6)). The data from the experiment were subjected to variance analysis using SAS statistical software and means were compared with least significant difference (LSD) test at the 5% probability level.The results indicated significant differences amongst the main effects of treatments and their interaction for many of the measured traits in cotton. Slicing of interactions of soil initial moisture in each tillage level indicated that majority of difference between soil initial moisture levels was related to their response to tillage type and M2 in comparison to M1 was significantly superior in secondary mean weight diameter of soil aggregate, weed control efficiency (WCE) at the 4th and 8th week after planting as well as boll numbers per plant under disk plow. Dheyab (2017) reported that with increasing soil moisture and reducing the size of soil aggregates up to 30 cm depth, the effectiveness of chemicals in weed control increased significantly. Meanwhile it must be noted the existence of more soil moisture content in moldboard plows plots creates a wet and homogeneous substrate with high seed contact with soil that allows seeds to quickly germinate, leading to the uniform emergence of cotton seedlings. Under different M levels, W5 treatment resulted in the highest WCE and total lint yield in the 4th week since planting as compared to W2 and W3. The most significant and positive correlation coefficients among the studied traits was found between total lint yield and WCE at the 4th week after platning (R2=0.88**) and WCE at the 8th week after platning (R2=0.85**). The highest total lint yield was produced by W5 in different trifluralin application levels. In current study, among the different treatments, T2M2W5 with 3730 kg/ha gave the highest lint yield, which had no significant difference with treatments involving hand hoeing under different tillage types and soil initial moisture levels.
کلیدواژه‌ها [English]
Ability to withstand competition, mean weight diameter of soil aggregate, weed control efficiency, yield loss
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