نتایج جستجو برای: inappropriate planting depth

تعداد نتایج: 202419  

2010
Q. Q. Li X. B. Zhou Y. H. Chen S. L. Yu

Limited water resources restrict winter wheat grain yield and quality in the Huang-Huai-Hai Plain of North China, and establishing optimal planting patterns according to crop water requirements is the key factor for achieving rational water use. In this paper, 4 planting patterns were applied, namely, uniform row (30 cm; traditional pattern), wide (40 cm)-narrow (20 cm) row, furrow (double line...

2016
Chengyue Bian Changjian Ma Xinhui Liu Chao Gao Quanru Liu Zhenxing Yan Yujie Ren Quanqi Li

A suitable planting pattern and irrigation strategy are essential for optimizing winter wheat yield and water use efficiency (WUE). The study aimed to evaluate the impact of planting pattern and irrigation frequency on grain yield and WUE of winter wheat. During the 2013-2014 and 2014-2015 winter wheat growing seasons in the North China Plain, the effects of planting patterns and irrigation fre...

Journal: :journal of ornamental plants 2015
a. amjad i. ahmad

a study was conducted to standardize production and postharvest handling of lily (lilium longifolium l. cv. mero star). in production trial, three plant densities viz.10, 20 and 30 cm between plants in 60 cm spaced rows and two planting depths viz.7.5 and 15 cm were compared. increased plant growth, yield and quality was recorded when plants were grown at a close spacing of 10 cm with 15 cm pla...

2010
William J. Sacks Delphine Deryng Jonathan A. Foley Navin Ramankutty

Results We present global planting date patterns for maize, spring wheat and winter wheat (our full, publicly available data set contains planting and harvesting dates for 19 major crops). Maize planting in the northern mid-latitudes generally occurs in April and May. Daily average air temperatures are usually c. 12–17 °C at the time of maize planting in these regions, although soil moisture of...

2013
Jean-Paul Laclau Eder A. da Silva George Rodrigues Lambais Martial Bernoux Guerric le Maire José L. Stape Jean-Pierre Bouillet José L. de Moraes Gonçalves Christophe Jourdan Yann Nouvellon

Although highly weathered soils cover considerable areas in tropical regions, little is known about exploration by roots in deep soil layers. Intensively managed Eucalyptus plantations are simple forest ecosystems that can provide an insight into the belowground growth strategy of fast-growing tropical trees. Fast exploration of deep soil layers by eucalypt fine roots may contribute to achievin...

2017
Stephan Swanson Wallace Wilhelm

Corn (&a mays L.) growth has been shown to be affected by planting date and amount of residue on the soil surface. The objective of this study was to determine if the adverse effects of cool soil temperatures on early seedling growth often associated with surface residues can be overcome by planting at later dates. Corn was planted at several planting dates (late April through early June) into ...

2011
Li Deng Yali Li

Hebei agricultural planting security is relative to the agricultural products of the consumer safety of the whole province and the beijing-tianjin region of. This paper selects agricultural planting safety as the research object of products and focus on the characteristics of the agricultural products plant. This paper applies theory and method of system comprehensive evaluation to screen index...

2011
Hamid Reza Naji Mohd. Hamami Sahri Tadashi Nobuchi Suhaimi Bakar

Inter-clonal and intra-clonal wood properties and their variations from pith to bark were evaluated for wood density and anatomical features on rubber wood (Hevea brasiliensis Muell. Arg) from a 9-year-old plantation with planting densities of 500 and 2000 trees per hectare comprised of clones RRIM 2020 and RRIM 2025. Planting density had uneven effects on wood density and wood cell features. I...

2014
Jian Sun Qiang Zhang Jia Zhou Qinping Wei

We used a next-generation, Illumina-based sequencing approach to characterize the bacterial community development of apple rhizosphere soil in a replant site (RePlant) and a new planting site (NewPlant) in Beijing. Dwarfing apple nurseries of 'Fuji'/SH6/Pingyitiancha trees were planted in the spring of 2013. Before planting, soil from the apple rhizosphere of the replant site (ReSoil) and from ...

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