Results 31 to 40 of about 442,137 (345)

An effective and friendly tool for seed image analysis [PDF]

open access: yes, 2021
Image analysis is an essential field for several topics in the life sciences, such as biology or botany. In particular, the analysis of seeds (e.g. fossil research) can provide significant information on their evolution, the history of agriculture, plant domestication and knowledge of diets in ancient times.
arxiv   +1 more source

Comparing various sulfur sources for soybean grown on an acid Oxisol in Brazil

open access: yesAgronomy Journal, Volume 114, Issue 6, Page 3420-3428, November/December 2022., 2022
Abstract A greenhouse experiment and a 2‐yr field trial were conducted to compare various S sources for soybean [Glycine max (L.) Merr.] grown on an acid Oxisol in Brazil. In the greenhouse, the sources included ammonium sulfate (AMS), monoammonium phosphate with a S ratio = 50:50 of AMS/elemental S (ES) – (AMS + ES), and ES + bentonite containing 90 ...
Eros A. B. Francisco   +4 more
wiley   +1 more source

“Flower of Aristolochia gigas var. sturtevantii used as a hat by a native of British Guiana” – a photograph from Everard im Thurn at the Royal Botanic Gardens, Kew [PDF]

open access: yes, 2015
The Royal Botanic Gardens, Kew, holds a small but valuable and unstudied collection of photographs by Everard im Thurn (1852–1932) who contributed to botany, with specimens and publications, and to anthropology, publishing works that highlight his ...
Albuquerque, Sara
core   +1 more source

Effects of fused and blended fertilizers on maize yield and soil properties

open access: yesAgronomy Journal, Volume 114, Issue 6, Page 3429-3444, November/December 2022., 2022
Abstract The deficiency of secondary and micronutrients negatively affects plant metabolic functions and reduces crop yields. These nutrients are applied in small quantities (<10 kg ha−1) and are physically blended or chemically fused with primary nutrients to enhance uniformity of application.
Bijesh Maharjan   +2 more
wiley   +1 more source

Comparison of plant proximal sensing approaches for nitrogen supply detection in crops

open access: yesAgronomy Journal, Volume 114, Issue 6, Page 3317-3328, November/December 2022., 2022
Abstract Nondestructive proximal sensors can be an efficient source of information of N status in crops for localized and rapid adjustment of fertilization applications. The aim of this study was to compare two transmittance/reflectance‐based sensors (SPAD, ASD) and a florescence‐based sensor (Multiplex) in their ability to measure N content in corn ...
Pablo Rosso   +3 more
wiley   +1 more source

Replacing fallow with field pea in wheat production systems across western Nebraska

open access: yesAgronomy Journal, Volume 114, Issue 6, Page 3329-3346, November/December 2022., 2022
Abstract Integration of field pea (Pisum sativum L.) (FP) into dryland cropping systems has increased due to ecological and economic benefits, paired with a growing market for pea‐derived products. Challenges exist in the High Plains that limit the integration of crop rotations to replace fallow periods with FP in wheat (Triticum aestivum L.)‐based ...
Samuel T. Koeshall   +4 more
wiley   +1 more source

Analysis of Conceptual Understanding of Botany and Metacognitive Skill in Pre-Service Biology Teacher in Jakarta, Indonesia

open access: yesJournal for Educating Gifted Young Scientists, 2019
The achievement of learning objective of Biology, especially Phanerogamic Botany requires several important aspects, namely conceptual understanding and metacognitive skill. Analysis of conceptual understanding of Botany and metacognitive skill is needed
R. H. Ristanto, P. Lestari, M. Miarsyah
semanticscholar   +1 more source

Does agroecosystem management mitigate historic climate impacts on dryland winter wheat yields?

open access: yesAgronomy Journal, Volume 114, Issue 6, Page 3515-3530, November/December 2022., 2022
Abstract Global studies that quantify climate effects on crop yields using top‐down spatial frameworks are invaluable for assessing generalized effects on world food supplies, yet do not contain the resolution necessary to identify local mediating effects of management. Our objectives were to identify (a) what climate factors have historically affected
Grace L. Miner   +6 more
wiley   +1 more source

Gut microbiota diversity is prognostic and associated with benefit from chemo‐immunotherapy in metastatic triple‐negative breast cancer

open access: yesMolecular Oncology, EarlyView.
We assessed the associations between the gut microbiota and outcome in metastatic triple‐negative breast cancer patients treated with chemotherapy alone or chemotherapy in combination with immunotherapy. Our data indicate that high gut microbiota alpha diversity was associated with improved clinical outcome and with benefit from immunotherapy.
Andreas Ullern   +8 more
wiley   +1 more source

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