نتایج جستجو برای: planting pattern

تعداد نتایج: 361259  

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه صنعتی شاهرود - دانشکده کشاورزی 1387

به منظور بررسی تاثیر تراکم گیاهی، منبع نیتروژن و الگوی کاشت بر عملکرد ذرت دانه ای رقم سینگل کراس301 (طلوع)، آزمایشی طی سال 1385 در اراضی مرکز تحقیقات کشاورزی شاهرود اجرا گردید. در این تحقیق از کرتهای دو بارخرد شده در قالب طرح بلوک های کامل تصادفی با چهار تکرار استفاده شد. پلات اصلی شامل سه تراکم بوته (70،80،90 هزار بوته در هکتار) و پلات فرعی شامل دو منبع کود (اوره و سولفات آمونیوم) و پلات فرعی ...

2013
S. S. Kohli Manjeet Singh Karun Sharma Gayatri Kansal

A numerical method called Multiple Attribute Decision Making (MADM) has been used for rational selection of a cotton harvester out of a finite number of cotton harvesters available the world over. In India, efforts are being made to design and develop a commercial cotton harvester to harvest selected cotton varieties sown by adopting common agronomic practices locally for cotton cultivation. Th...

2000
DAVID R. GEALY NESTOR E. SALDAIN RONALD E. TALBERT

The effect of seeding depth on emergence of red rice (Oryza sativa) ecotypes from Arkansas (AR), Louisiana (LA), and Mississippi (MS) was determined under dry-seeded rice production in clay and silt loam soils in Arkansas. By 21 d after planting (DAP), all red rice ecotypes had emerged from planting depths of 1.3, 2.5, 5.0, and 7.5 cm in both clay and silt loam soils. In silt loam soil, seedlin...

2008
A. M. Bastidas

The sensitivity of soybean [Glycine max (L.) Merr.] main stem node accrual to ambient temperature has been documented in greenhousegrown plants but not with fi eld-grown plants in the north-central United States. Biweekly V-node and R-stage, stem node number, internode length, and other traits were quantifi ed in an irrigated split-plot, four-replicate, randomized complete block experiment cond...

2017
A. M. Bastidas T. D. Setiyono Achim Dobermann Kenneth G. Cassman Roger Wesley Elmore James E. Specht

The sensitivity of soybean [Glycine max (L.) Merr.] main stem node accrual to ambient temperature has been documented in greenhousegrown plants but not with fi eld-grown plants in the north-central United States. Biweekly V-node and R-stage, stem node number, internode length, and other traits were quantifi ed in an irrigated split-plot, four-replicate, randomized complete block experiment cond...

Journal: :Photosynthetica 2022

Wide-narrow row maize planting patterns are a popular way to enhance yield via improving canopy PAR. To further optimize PAR, we designed an improved wide-narrow pattern (R2) based on the principle of shortest projection length and longest illumination objects ground. Compared traditional (R1), increased by about 10% in R2. R2 had higher leaf area index, chlorophyll content, photosynthetic rate...

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