Results 21 to 30 of about 311,005 (248)

Initial growth and development of southern sandbur based on thermal units [PDF]

open access: yesPlanta Daninha, 2014
Availability of basic information on weed biology is an essential tool for designing integrated management programs for agricultural systems. Thus, this study was carried out in order to calculate the base temperature (Tb) of southern sandbur (Cenchrus ...
E.C.R. Machado   +5 more
doaj   +1 more source

EFFECT OF HEAT STRESS ON SOME AGRONOMIC TRAITS OF BREAD WHEAT (TRITICUM AESTIVUM, L) GENOTYPES UNDER UPPER EGYPT CONDITIONS [PDF]

open access: yesFayoum Journal of Agricultural Research and Development, 2005
Combined analysis of variance for all studied traits in twelve breadwheat genotypes showed highly significant differences among lines andsowing dates, as well as, the lines x sowing date interaction whichshowed significant and highly significant for all ...
Abd El-Kareem A. Abd El-Kareem   +2 more
doaj   +1 more source

Growth model of the pineapple guava fruit as a function of thermal time and altitude

open access: yesIngeniería e Investigación, 2016
The growth of the pineapple guava fruit is primarily stimulated by temperature but is also influenced by other climactic factors, such as altitude.
Alfonso Parra-Coronado   +2 more
doaj   +1 more source

Spatiotemporal Estimation of the Olive and Vine Cultivations’ Growing Degree Days in the Balkans Region [PDF]

open access: yesAtmosphere, 2021
Olive and vine cultivations are two of the most important crops in Europe, yielding high quality and value food products. The climate change over the Balkans may elevate the agroecological pressure for the established crops and shift their cultivations areas. One of the widely-used agroclimatic indices is the growing degree days (GDD) which accumulates
Ioannis Charalampopoulos   +3 more
openaire   +3 more sources

Impact of Sowing Date Induced Temperature and Management Practices on Development Events and Yield of Mustard

open access: yesBangladesh Agronomy Journal, 2015
The experiment was conducted at the research field of the Agronomy Division, Bangladesh Agricultural Research Institute (BARI), Joydebpur, Gazipur, during rabi season of 2014-2015 to find out the relationship between different development events of ...
MSA Khan, MA Aziz
doaj   +1 more source

VEGETATIVE DEVELOPMENT AND GROWING DEGREE-DAYS OF TROPICAL AND WINTER FORAGES [PDF]

open access: yesEngenharia Agrícola, 2019
ABSTRACT One of the limitations to producing irrigated forages is setting suitable biometric parameters to establish the entrance of animals to grazing areas. Such parameters can be measured or even estimated. Estimates are advantageous for being practical and able to be used for grazing optimization.
Arthur C. Sanches   +4 more
openaire   +4 more sources

Agrometeorological Conditions and Agroclimatic Trends for the Maize and Wheat Crops in the Balkan Region

open access: yesAtmosphere, 2021
The Balkan peninsula is a transitional zone, in terms of bioclimatic conditions, with an extended and dynamic agricultural sector. Its potential is in peril due to climate change and socioeconomic factors.
Ioannis Charalampopoulos
doaj   +1 more source

Study of Comparative Phenology and the Effect of Emergence Date and Scarification on the Growth and Performance of Caspian Vetch (Vicia hyrcanica) and Narbon Vetch (Vicia narbonensis) in Wheat (Triticum aestivum) Fields [PDF]

open access: yesپژوهش‌های حفاظت گیاهان ایران
IntroductionWheat (Triticum aestivum L.) is one of the most important cereal crops in the world as a source of carbohydrates, protein, and minerals (Esposito et al., 2023). Its yield and planted area account for about one-third of food production.
Vahid Kamari Direh   +3 more
doaj   +1 more source

Phenological variations of avocado cv. Hass and their relationship with thermal time under tropical conditions

open access: yesHeliyon, 2023
In recent years, the avocado has been one of the most dynamic fruits in the world market. In particular, cv. Hass stands out due to its productivity, nutritional quality, and acceptance.
Joaquín Guillermo Ramírez-Gil   +6 more
doaj   +1 more source

GROWING DEGREE DAYS AS A METHOD FOR DETERMINING CARROT SEED HARVEST [PDF]

open access: yesHortScience, 1990
Carrot (Daucus carota) L.) seed quality is affected by the environment in which it matures. Substantial differences in germination from year to year and from field to field have been recognized for many years for umbelliferae seed. Part of the explanation for low germination appears to be the harvest of immature seed.
Gil Simmons, Bill B. Dean
openaire   +1 more source

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