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1. Index for potato nitrogen status diagnosis in a three-phase hydroponic system

Author:
Barros da Silva Filho, Jaime; Cezar Rezende Fontes, Paulo; Martinez, Hermínia Emília Prieto; Cecon, Roberto Paulo; McGiffen, Milton E.
Source:
Journal of plant nutrition 2018 v.41 no.17 pp. 2183-2188
ISSN:
1532-4087
Subject:
biometry; color; cultivars; greenhouses; hydroponics; internode diameter; leaves; nitrogen; nitrogen content; potatoes; seed tubers; space and time
Abstract:
... Up to now, there has not been any research that has tried to establish nitrogen (N) status diagnosis in basic seed potatoes, propagated by sprout in a three-phase hydroponic system. The objective of this study was to develop a potential index to be used in the diagnosis of N status in potato, using a three-phase hydroponic system, with the potato cultivar Agata. The treatments consisted of four N ...
DOI:
10.1080/01904167.2018.1485159

2. Yellow melon yield in response to mineral or organic fertilization

Author:
de Souza, Jaciane Rosa Maria; Artur, Adriana Guirado; Taniguchi, Carlos Alberto Kenji; Pinheiro, José Israel
Source:
Journal of plant nutrition 2018 v.41 no.9 pp. 1197-1204
ISSN:
1532-4087
Subject:
cattle manure; color; dry matter accumulation; fertilizer application; flowering; fruit yield; fruiting; hybrids; irrigation water; leaves; manure spreading; melons; mineral fertilizers; nitrogen; nutritional status; organic fertilizers; phosphates; phosphorus; potassium; poultry manure; seedlings; soil; soil analysis; stems; Brazil
Abstract:
... Although current recommendations in Brazil suggest the application of mineral and organic fertilizers, there is little information regarding the interaction between them in melon plants. This study aimed to evaluate the effects of mineral and organic fertilization in the plant development, nutritional status, and fruit yield of yellow melon. The following fertilizations were evaluated: mineral fer ...
DOI:
10.1080/01904167.2018.1434543

3. Different K:Ca ratios affected fruit color and quality of strawberry ‘Selva’ in soilless system

Author:
Haghshenas, Masoud; Arshad, Mousa; Nazarideljou, Mohammad Javad
Source:
Journal of plant nutrition 2018 v.41 no.2 pp. 243-252
ISSN:
1532-4087
Subject:
ascorbic acid; coconuts; color; electrical conductivity; ellagic acid; fruit quality; fruits; leaf area; leaves; nutrient solutions; nutrients; pH; perlite; soilless culture; strawberries; titratable acidity; total soluble solids
Abstract:
... High quality fruit production is the cornerstone of marketability. Optimum plant performance depends on the balanced and timely availability of mineral nutrients. In addition to element concentrations, the ratio of nutrient elements in solution plays a determinative role in growth, productivity, quality, and nutrients uptake. In this experiment, the effects of different Potassium:Calcium (K:Ca) ra ...
DOI:
10.1080/01904167.2017.1385797