Results 141 to 150 of about 15,036 (184)

Foliar diagnosis of soybean by dris

Communications in Soil Science and Plant Analysis, 1986
Abstract The Diagnosis and Recommendation Integrated System (DRIS) has proven useful in the interpretation of tissue elemental analyses for many crops, and research was undertaken to apply the same method for foliar diagnosis of soybean (Glycine max [L.] Merr.).
R. B. Beverly, M. E. Sumner, W. S. Letzsch, C. O. Plank   +3 more
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Foliar Diagnosis on Cotton in Macedonia

Experimental Agriculture, 1977
SUMMARYThe results of eight fertilizer experiments with cotton, conducted in several areas of Macedonia, were evaluated by leaf analysis to establish possible relations between leaf N, P and K and yield, as well as to estimate the adequacy ranges of those elements under local conditions.
G. A. Argyriadis, N. A. Polyzopoulos
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Early foliar diagnosis of carrot by univariate methods

Communications in Soil Science and Plant Analysis, 2018
ABSTRACTFoliar diagnosis enables early identification of nutritional needs. Objectives of this study were to determine diagnostic indexes by univariate methods: critical level (CL), sufficiency range (SR) and Kenworth Balanced Indexes (IBK) in three phenological stages of carrot in order to interpret results of foliar analysis and verify if limitations
Talita Gabriela Gentil, Felipe Augusto Reis Gonçalves, Thaísa Fernanda Oliveira, Luciel Rauni Dezordi, Leonardo Angelo de Aquino, Junia Maria Clemente   +5 more
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Diagnosis method of kiwifruit foliar diseases based on improved YOLOv4-tiny

2021 International Conference on Computer Engineering and Artificial Intelligence (ICCEAI), 2021
To solve the problem of slow diagnosis speed of kiwifruit foliar surface diseases and insufficient diagnosis ability of small target diseases, a lightweight network model based on YOLOv4-Tiny is proposed. Firstly, by introducing a depthwise separable convolution at the end of the backbone network, the number of parameters is reduced while the accuracy ...
Tianyu Ye, Zhaoming Wu, Shengqian Wang, Chengzhi Deng, Cong Tang   +4 more
openaire   +1 more source

Wymore's standardized score functions for foliar nutritional diagnosis of the cacao crop

Journal of Plant Nutrition, 2021
Cacao crop is under pressure due to the high global consumption of this commodity, a fact that exposes the great need of technical precision for nutritional diagnosis and fertilizer recommendation ...
Guilherme Amorim Homem de Abreu Loureiro, Quintino Reis de Araujo, George Andrade Sodré, Dario Ahnert, Rodrigo Antonio Escalona-Valdez, Virupax Chanabasappa Baligar   +5 more
openaire   +1 more source

Foliar diagnosis of sugar maple decline by DRIS

Communications in Soil Science and Plant Analysis, 1989
Abstract Diagnosis and Recommendation Integrated System (DRIS) has proven a useful tool for interpreting foliar analyses of agronomic crops. The present study applies the system to sugar maple (Acer saccharum Marsh.) decline. DRIS foliar reference norms for N, P, K, Ca, Mg, Fe, and Al were derived from extant data. The norms were tested for sensitivity
F.C. Lozano, K.D. Huynh
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Foliar diagnosis: Vegetative index for several cultivars of watermelon

Communications in Soil Science and Plant Analysis, 1994
Abstract Monitoring the nutrient status of a crop by tissue analysis is an important tool in maximizing yields and avoiding nutrient deficiencies or toxicities. Ten cultivars of watermelon [Citrullus lanatus (Trunb) Mansfield] were grown under the same fertilization regimen throughout their growth cycle and were sampled fortnightly in order to ...
A. del Rio, I. Lopez‐Cantarero, L. Romero, A. Sanchez, F. A. Lorente, J. L. Valenzuela   +5 more
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Detection and diagnosis of coconut foliar decay disease

1999
Plant viruses axe the second most important group of plant pathogens and may cause losses exceeding US$ 60 billion per year (Matthews, 1991). Their effects are most severe in agrarian economies where major staple crops are grown intensively. There are no direct control measures available for most crops, and resistance is available for only a few virus ...
Randles, J., Wefels, E., Hanold, D., Miller, D., Morin, J., Rohde, W.   +5 more
openaire   +3 more sources

Foliar Diagnosis Indexes for Corn by the Methods Diagnosis and Recommendation Integrated System (DRIS) and Nutritional Composition (CND)

Communications in Soil Science and Plant Analysis, 2016
ABSTRACTFoliar analysis has been an important method for diagnosing the nutritional status of plants. Therefore, this work aimed to determine benchmarks (norms) for interpretation of results of foliar analysis by the methods of Diagnosis and Recommendation Integrated System (DRIS) and Nutritional Composition (CND) and to determine the order of ...
Roney Mendes Gott, Leonardo Angelo Aquino, Junia Maria Clemente, Luiz Paulo Dornelas Dos Santos, André Mundstock Xavier Carvalho, Felipe Oliveira Xavier   +5 more
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Diagnosis of nitrogen deficiency and toxicity of Eucalyptus globulus seedlings by foliar analysis

Plant and Soil, 1995
The relationship between shoot growth and foliar nitrogen (N) in E. globulus seedlings was studied in the glasshouse to determine standard values for N deficiency and toxicity diagnosis. Seedlings were grown for 9 weeks in yellow sand, at 10 rates of N, applied as ammonium sulphate, calcium nitrate or ammonium nitrate.
Shedley, E., Dell, B., Grove, T.
openaire   +1 more source