نتایج جستجو برای: planting

تعداد نتایج: 13734  

شهسواری, محمد رضا, یساری, طلعت,

  Using growing degree days (GDD) for expression of duration of plants’ developmental stages is preferred over calendar time. Therefore, determination of GDD and zoning of regions is very important for on time and correct agronomic practices and also for better land use. To determine the required GDD for developmental stages of spring safflower cultivars, the data obtained from planting-date ex...

Journal: :Walailak Journal of Science and Technology (WJST) 2018

2011
Fengrui Chen Guangxiong Peng Wei Su Yaochen Qin Xi Li

Crop planting suitability evaluation is important for agricultural production. In this study, a comprehensive evaluation framework which combined geographical information system, remote sensing, global position system and geostatistics with other models was presented to evaluate the tobacco planting suitability on a small scale. Ten indicators from three respects of climate, terrain and soil nu...

2017
Morag F. Macpherson Adam Kleczkowski John R. Healey Christopher P. Quine Nick Hanley

Diversification of the tree species composition of production forests is a frequently advocated strategy to increase resilience to pests and pathogens; however, there is a lack of a general framework to analyse the impact of economic and biological conditions on the optimal planting strategy in the presence of tree disease. To meet this need we use a novel bioeconomic model to quantitatively as...

2006
Glenn E. Studebaker

Insecticides used at planting, either in-furrow or as seed treatments, are the recommended management option for control of thrips in cotton in Arkansas (Greene, 00 ). However, in recent years the efficacy of standards, such as aldicarb in-furrow, has decreased. This has resulted in added cost of control due to foliar insecticide applications being required in addition to the at-planting insect...

2018
Longgang Zhao Zhongzhi Han Jinzhong Yang Hua Qi

In order to test the feasibility of computer simulation in field maize planting, the selection of the method of single seed precise sowing in maize is studied based on the quadratic function model Y = A×(D-Dm)2+Ym, which depicts the relationship between maize yield and planting density. And the advantages and disadvantages of the two planting methods under the condition of single seed sowing ar...

2012
M. Sajid M. Pervaiz I. Ali

Field experiment was carried out at Ornamental Nursery, Department of Horticulture, Khyber Pakhtunkhwa (KP) Agricultural University Peshawar, during 2009 to study “the response of plane tree cuttings to different planting dates”. Three types of cuttings (hardwood cuttings, semi-hardwood cuttings, Softwood cuttings) and three dates (6 January, 21 January and 5 February) were studied. The experim...

2007
Michael Trotter

A programme of planting native trees on Quail Island in Lyttelton Harbour has been proposed by the Otamahua/Quail Island Ecological Restoration Trust. The impact that this would have on the Maori and European historic and archaeological sites on the island is assessed. It is concluded that in several areas the planting and growth of trees would adversely affect these sites (some of which are pr...

2002
Joe Lauer

Key planting factors that influence corn stand establishment includes uniform depth and spacing of seed, correct seed population and optimizing the soil environment for rapid germination and uniform emergence. Other variables affecting stand establishment are seedbed quality (including soil moisture and temperature), seed quality and planter speed. Differences among fields for stand establishme...

2015
Stacy L. Clark Scott E. Schlarbaum Callie J. Schweitzer Eric J. Jokela

Artificial regeneration of oak has been generally unsuccessful in maintaining the oak component in productive upland forests of eastern North America. We tested visual grading effects on quality-grown northern red oak (Quercus rubra) seedlings planted in two submesic stands on the Cumberland Plateau escarpment of Tennessee, USA. Seedlings were grown for one year using advanced fertilization and...

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