Results 11 to 20 of about 309,576 (290)

Nitrogen nutrition index and morphogenesis in Alexandergrass of the Central Depression of Rio Grande do Sul

open access: yesCiência Rural, 2023
: This study assessed the nitrogen nutrition index, morphogenic characteristics and tiller structure of Alexandergrass (Urochloaplantaginea (LINK) Hitch) pasture submitted to different nitrogen (N) levels (zero, 150 or 300 kg ha-1 of N). The experimental
Paulo Roberto Salvador   +7 more
doaj   +1 more source

تأثیر سطوح شوری آب آبیاری با NaCl بر فیلوکرون و سرعت ظهور برگ ارقام جو [PDF]

open access: yesتنش های محیطی در علوم زراعی, 2016
شوری منابع آب‌وخاک از مهم‌ترین مشکلات کشاورزی در مناطق خشک و نیمه‌خشک ایران است. برای بررسی تأثیر شوری آب آبیاری بر فیلوکرون و سرعت ظهور برگ ارقام جو، آزمایشی به‌صورت فاکتوریل در قالب طرح پایه بلوک‌های کامل تصادفی با سه تکرار در گلخانه دانشکده کشاورزی ...
رئوف سیدشریفی   +1 more
doaj   +1 more source

Approaches to Modeling Potato Leaf Appearance Rate [PDF]

open access: yesAgronomy Journal, 2006
Two approaches quantifying potato (Solanum tuberosum L. cv. Kennebec) leaf appearance rates were evaluated: a thermal time approach using the phyllochron, and a nonlinear temperature response approach using a modified β distribution function. Leaf appearance measurements at six temperature treatments (14/10, 17/12, 20/15, 23/18, 28/23, and 34/29°C ...
David H. Fleisher   +4 more
openaire   +1 more source

Phyllochron and leaf appearance rate in oat [PDF]

open access: yesBragantia, 2017
Abstract Phyllochron and leaf appearance rate are both important parameters in the production efficiency of agricultural crops. The objectives of this study were to determine the phyllochron and leaf appearance rate in 4 oat cultivars (Avena sativa L.) in 3 sowing dates and verify the variability of phyllochron and leaf appearance rate among cultivars ...
Chaves, Gabriela Görgen   +8 more
openaire   +3 more sources

Cardinal temperatures and modeling of vegetative development in guava [PDF]

open access: yesRevista Brasileira de Engenharia Agrícola e Ambiental, 2019
The aim of this study was to estimate cardinal temperatures (base, optimum, and maximum), and simulate the vegetative development of guava crop through phyllochron (linear) and Wang and Engel (nonlinear) models at the seedling phase.
Mábele de C. Ferreira   +3 more
doaj   +1 more source

Phenology and Floret Development as Affected by the Interaction between Eps-7D and Ppd-D1

open access: yesPlants, 2021
Earliness per se (Eps) genes may play a critical role in further improving wheat adaptation and fine-tuning wheat development to cope with climate change.
Priyanka A. Basavaraddi   +4 more
doaj   +1 more source

Crescimento de espécies do gênero Brachiaria, sob déficit hídrico, em casa de vegetação Effect of water deficit on the growth of Brachiaria species in greenhouse

open access: yesRevista Brasileira de Zootecnia, 2005
Avaliaram-se as características morfogênicas, fisiológicas e produtivas de espécies de Brachiaria, durante e após período de estresse hídrico. Os tratamentos foram arranjados em um esquema fatorial 4 x 5 quatro espécies de Brachiaria (B.
Jorge Luiz Schirmer de Mattos   +2 more
doaj   +1 more source

Distribution characteristics of polycyclic aromatic hydrocarbons in Chinese flowering cabbage in different periods [PDF]

open access: yesE3S Web of Conferences, 2023
The purpose of this study is to investigate the distribution characteristics of polycyclic aromatic hydrocarbons (PAHs) in Chinese flowering cabbage at different growth stages, and provide reference for people's daily diet and production activities.
He Gangjian, Sun Qiaojian, Long Minghua
doaj   +1 more source

Alterations in Grapevine Leaf Metabolism Occur Prior to Esca Apoplexy Appearance [PDF]

open access: yesMolecular Plant-Microbe Interactions®, 2017
Esca disease is one of the major grapevine trunk diseases in Europe and the etiology is complex, since several inhabiting fungi are identified to be associated with this disease. Among the foliar symptom expressions, the apoplectic form may be distinguished and characterized by sudden dieback of shoots, leaf drop, and shriveling of grape clusters in a
Magnin-Robert, Maryline   +13 more
openaire   +6 more sources

Agrometeorological models for predicting seedlings development of two native forest species

open access: yesScientia Agricola, 2021
Models of development are tools that connect the effects of development on the environment, allowing their applications in several studies. Nevertheless, studies are scarce on models of development for native forest species in Brazil. This study aimed to
Fabrina Bolzan Martins   +2 more
doaj   +1 more source

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