Search results for "HORTICULTURE"

Potential of the Bacillus thuringiensis Toxin Reservoir for the Control of Lobesia botrana (Lepidoptera: Tortricidae), a Major Pest of Grape Plants▿

2006

ABSTRACT The potential of Bacillus thuringiensis Cry proteins to control the grape pest Lobesia botrana was explored by testing first-instar larvae with Cry proteins belonging to the Cry1, Cry2, and Cry9 groups selected for their documented activities against Lepidoptera. Cry9Ca, a toxin from B. thuringiensis , was the protein most toxic to L. botrana larvae, followed in decreasing order by Cry2Ab, Cry1Ab, Cry2Aa, and Cry1Ia7, with 50% lethal concentration values of 0.09, 0.1, 1.4, 3.2, and 8.5 μg/ml of diet, respectively. In contrast, Cry1Fa and Cry1JA were not active at the assayed concentration (100 μg/ml). In vitro binding and competition experiments showed that none of the toxins teste…

RESUME:Studies on the Chemical Control of Aonidiella aurantii (Mask.)

1974

Aonidiella aurantii (Mask.) which was accidentally introduced in Sicily in 1968 has since become a dangerous pest requesting special treatments in citrus groves. Experiments have been carried out on Citrus lemon to evaluate the efficacy of several organophosphorous compounds partly in mixture with white oil and this latter applied sole (cf. table 1). The results obtained against young females are set out in table 2; they show excellent results with almost all compounds whereas the same pesticides had a rather poor effect on mature females (cf. table 3). It is concluded that the replacement of white oils by organophosphorous compounds is not justified providing that the control is directed a…

Evaluation of different mechanical fruit harvesting systems and oil quality in very large size olive trees

2014

In 2006 and 2009, trials were carried out in the Apulia region in Southern Italy to evalu-ate the possibility of mechanizing olive harvesting in groves of old and very large trees. The trees belonged to the cultivars ‘Cellina di Nardò’ and ‘Ogliarola Salentina’. They were 60-100 years old and 7-9 m tall with a canopy volume of 140-360 m3. In the first half of November 2006, with a mechanical beater mounted on a tractor plus hand-held pneumatic combs, the harvesting yield was close to 90% of the total olives present in the canopy, and the harvesting working productivity was around 60 kg of harvested olives h-1 worker-1. With a self-propelled shaker attached to the main branches the harvestin…

Xanthones from Hypericum reflexum

1990

Abstract The aerial parts of Hypericum reflexum contain six xanthones, two pyranoxanthones, two xanthonolignoids and a biphenyl. Six of these compounds are described for the first time.

Eudesmanolides of Artemisia barrelieri

1983

Abstract A new eudesmanolide, barrelin, was identified from the herbal part of Artemisia barrelieri . 1-Oxo-6β,7α,11β- H -eudesm-4-en-6,12-olide and 1β-hydroxy-6β,7α,11β- H -eudesm-4-en-6,12-olide were also isolated from the same source.

Stand-Alone or Combinatorial Effects of Grafting and Microbial and Non-Microbial Derived Compounds on Vigour, Yield and Nutritive and Functional Qual…

2022

The current research investigated the effects of endophytic fungi such as Trichoderma atroviride (Ta) or Ascophyllum nodosum seaweed extract (An) and their combination on growth, yield, nutritive and functional features, and mineral profile of ‘Birgah’ F1 eggplant either ungrafted, self-grafted or grafted onto the Solanum torvum rootstock. Eggplant exposed to An or An+Ta had a significant increase in root collar diameter 50 days after transplanting (RCD50), total yield (TY), marketable yield (MY), ascorbic acid (AA) content, Mg, Cu, and Zn concentration, and a reduction in glycoalkaloids (GLY) compared with the control. Furthermore, grafted plants had a higher TY, MY, number of marketable f…

Two-dimensional electrophoresis analysis of proteins extracted from leaves of homozygous and heterozygous citrus

2011

Actividad amilolítica y movilización del almidón en hojas de naranjo (Citrus sinensis L. Osbeck, cv. Washington Navel), en relación con la fructifica…

1984

La ciudad y la huerta.

2005

The disappearance of the agrarian landscape ln the huerta of Valencia has been accelerated in the last years as a consequence of the advance on the disordered urbanization. This has given place to both a civic movement and a growing attention from investigators of diverse areas. The present article is a review of the recent publications about this topic. The text stands out the peculiar features of this agrarian space as well as the process of its historical formation. The arguments for the preservation of the huerta are mainly based in their ecological and cultural values. Also in the rich material patrimony that the irrigation and agricultural practices have left on the land. One of the m…

Hydroponic Lettuce Cultivation Using Organic Nutrient Solution from Aerobic Digested Aquacultural Sludge

2021

The aim of this study was to demonstrate how aquacultural sludge can be processed and utilized as an organic nutrient solution (ONS) for hydroponic lettuce production. By using a previous developed method, approximately 80% of the processed sludge was reclaimed as a clear, nutrient-rich solution. The performance of the recovered nutrient solution on lettuce growth was assessed in a nutrient film hydroponic system. The results were compared to the results obtained using a conventional nutrient solution (CNS). Yield, fresh weight, water consumption, and nutrient and heavy metal content in leaf tissue were measured. In spite of a 16% lower average fresh weight obtained in ONS compared to the w…