Foliar sprays with humic acid derived from vermicompost at a concentration of 50 ml•L-1 induced a significant increase in the total leaf area, yield and total soluble solids. For several measurements performed in plants we found no significant difference between grapevines treated with HA T2 and those with HA T3. The experimental results in the present study confirm that foliar application with humic acid may improve growth, yield, and berry quality attributes of grapevine.

are two of the most widely spread plants on the market for annual potted ornamental plants. In order to identify the most adequate substrate formula we analyzed the effects of different potting growing media used for P. hybrida grandiflora 'Bravo' and N. alata 'Dinamo' on their photosynthetic capacity, leaf area, and flowering potential. Optimization of growing media formula for petunia and ornamental tobacco was performed by preparing four growing media mixing fallow soil (FS), Biolan peat (BP), acid peat (AP), leaf compost (C), and perlite (P) in different proportions. The physiological potential of petunia and ornamental tobacco was investigated by photosynthesis and respiration rate and chlorophyll pigments in leaves, while the vegetative and flowering phenological stages were evaluated by number of leaves per plant, leaf area, number of flowers per plant and leaf area/flowers ratio. These measurements were significantly influenced by the different potting growing media used in this study. In the flowering stage, the highest photosynthesis rates (8.612 µmol CO2 m -2 s -1 ) as well as leaf area (1.766 dm 2 ) of petunias were obtained on growing media with 60% biolan peat, 30% acid peat and 10% perlite (BP60-AP30-P10). Flowering responses to growing conditions vary greatly among plants and the biggest number of ornamental tobacco flowers (22 flowers plant -1 ) was registered as an effect of BP60-AP30-P10 media. Growing media with the BP60-AP30-P10 formula seem to be the most adequate growth substrate to develop profitable crops for petunias and ornamental tobacco with high decorative value.

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Arbuscular mycorrhizal fungi (AMF) are essential soil microorganisms for terrestrial ecosystems and form beneficial symbioses with the root systems of most agricultural plants. The purpose of this paper was to examine the effect of the community of six AMF on the growth, physiological response, and flowering performance in organic potted lavender culture. The mixture of AMF containing Rhizophagus irregularis, Claroideoglomus claroideum, Funneliformis mosseae, Funneliformis geosporum, Claroideoglomus etunicatum, and Glomus microaggregatum was added in a pot with peat, volcanic rock, and coconut bark. We analyzed the fresh shoot biomass, root biomass, total plant biomass, leaf area, flowering performance, photosynthesis rate, and photosynthetic pigment content. Pearson’s correlation coefficient was performed to get a better understanding of the relationships between the studied variables. The total plant biomass was more pronounced in plants with AMF-S20g (212.01 g plant−1) and AMF-S30g (220.25 g plant−1) than with AMF-S10g (201.96 g plant−1) or in untreated plants (180.87 g plant−1). A statistically significant increase for Chl a, Chl b, and Car was found for AMF-S20g and AMF-S30. Our findings suggest that the AMF mixture application in a growing substrate with peat, coconut bark, and volcanic rock improved plant growth, physiological processes, and ornamental value in mycorrhizal lavender plants. This environmentally friendly agricultural practice could be used for the sustainable production of lavender.

Agricultural production systems currently face multiple challenges: Climate change, natural resource depletion, and supply chain disruption, together with global population growth. As sustainable agriculture must simultaneously deliver myriad services (e.g. provide food security, maintain natural resources, retain and improve framers' profitability, and sustain biodiversity), a systemic and multidisciplinary approach is thus needed. In this context, new technologies based on sensors, automatic machines, robots, and digital applications show much potential. The special section of the Agronomy Journal, entitled, "Agricultural and Biological Sciences: Plant, Soil, Animal and Environment Nutrient Management," brings together a coherent set of research studies. All papers published in this special section address current, relevant topics for agriculture, biology and environmental sciences with a multidisciplinary approach aimed at generating new scientific information on digital technologies, bioinformatics, plant science, soil resources, agricultural waste, and environmentally conscious approaches. A total of 58 papers were submitted, each of which was evaluated by expert reviewers using a double-blind reviewing process and 25 full text papers were accepted for publication in the special section. The present paper highlights the findings of the published papers, with the aim of bringing cuttingedge innovation to applied research in agriculture and biology. The published papers here provide new knowledge and viable solutions for better performance in agricultural and biological sciences. New technologies will change the concept of farming and agribusiness making it more profitable, efficient, safer, attractive, simple, smart, and finally sustainable. Rural development and food security policies must support and finance the easiest possible access to new technologies for agricultural producers.