نتایج جستجو برای: unr and conventional row 80 cm

تعداد نتایج: 16878014  

Journal: :Journal of environmental quality 2007
L Jason Krutz Clifford H Koger Martin A Locke Robert W Steinriede

Cultural management practices that reduce the off-site transport of herbicides applied to row crops are needed to protect surface water quality. A soybean [Glycine max (L.) Merr.] field study was conducted near Stoneville, MS on Sharkey clay to evaluate row spacing (50 cm vs. 100 cm) effects on metolachlor [2-chloro-N-(2-ethyl-6-methylphenyl)-N-(methoxy-1-methylethyl) acetamide] transport. One ...

Journal: :Radiology 2005
Martin H K Hoffmann Heshui Shi Robert Manzke Florian T Schmid Leon De Vries Michael Grass Hans-Jürgen Brambs Andrik J Aschoff

PURPOSE To evaluate the effect of heart rate on the quality of coronary angiograms obtained with 16-detector row computed tomography (CT) by using temporally enhanced three-dimensional (3D) approaches. MATERIALS AND METHODS The local ethics committee approved the study, and informed consent was obtained from all patients. Fifty patients underwent coronary CT angiography (heart rate range, 45-...

2012
Mariana Robles Ignacio A. Ciampitti Tony J. Vyn

Published in Agron. J. 104:1747–1756 (2012) doi:10.2134/agronj2012.0231 Copyright © 2012 by the American Society of Agronomy, 5585 Guilford Road, Madison, WI 53711. All rights reserved. No part of this periodical may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopying, recording, or any information storage and retrieval system, without perm...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه گیلان - دانشکده فنی 1393

asymmetric membranes are widely used in many industrial membrane separation processes. the major advantage of membrane filtration over the conventional process is its ability to remove a wider spectrum of particles without using any chemicals. hollow fiber configuration offer many advantages over flat-sheet or tubular membranes. the spinning process of hollow fiber may look simple, yet it is te...

Mahshid Kazempor Saeed Zakernejad,

BACKGROUND: Alternative furrow irrigation method is an effective procedure to reduce the amount of irrigation water in arid areas for economic production. OBJECTIVES: Assessment seed yield, its components and morphological characteristics of corn affected different level of irrigation regime and super absorbent polymer (SAP) under warm and dry climate con...

Journal: :چغندرقند 0
ذبیح اله رنجی عضو هیئت علمی موسسه تحقیقات چغندرقند، کرج، ایران علی حبیب خدایی کارشناس موسسه تحقیقات چغندرقند، کرج، ایران منوچهر صادق کوهستانی موسسه تحقیقات چغندرقند، کرج، ایران سعید واحدی کارشناس موسسه تحقیقات چغندرقند، کرج، ایران

in order to apply suitable methods for sugar beet seed sowing and determine the relation between yield and growth parameters in saline soils, two salt tolerant progeny lines were sown by five methods for two years (1995 and 1996) using a split plot design. growth parameters such as leaf area index, crop growth rate, total dry weight and relative growth rat were analysed. ph and ec of the soil a...

2015
Jacob A. Gersh Benjamin Willett

Traditional CyberKnife (CK) calibration uses TG-51, which requires kQ to be defined using the standard reference condition of 100 cm SSD in a 10 cm × 10 cm field. Since the CK is calibrated using a 6 cm fixed-aperture collimating cone at 80 cm SAD, the BJR-25 method is commonly used to relate circular-field PDDs to square-field PDDs for kQ determination. Using the InCise MLC system, the CK is a...

1999
P.C Sharma P.B Kanjilal

A field trial was conducted at the research farm of RRL, Jorhat during 1995 and 1996 to study the performance of Mentha Piperita under varying dates of planting and row spacings, maximum herbage and oil yield were obtained from January plants crops. Yield deceased when planting was delayed planting at a closer row spacing of 45 cm recorded the maximum herbage yield of 61'92 q/a while the yield ...

2007
R. AHMAD

A field experiment was conducted for two consecutive years (2003 and 2004) to study the effect of row spacing (75, 65 and 55cm) and different weed competition durations (0, 15,30,45,60 days after emergence and throughout the growth period) on weeds density and biomass and growth and yield of maize. Reducing row spacing significantly suppressed the weed density and biomass. The maximum reduction...

Journal: :Crops 2023

Maize is the most represented grain crop on world’s arable land. It mostly grown using standard sowing at an inter-row distance of 70 cm. However, growing in two rows (double-row sowing) increasingly common today. The aim this research was to determine influence different spatial distributions same population maize plants yield grains a larger range FAO hybrid maturing group. experiment lasted ...

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