Spring jobs in vineyards.

Grape Detection in Vineyards

Automated Visual Yield Estimation in Vineyards

We present a vision system that automatically predicts yield in vineyards accurately and with high resolution. Yield estimation traditionally requires tedious hand measurement, which is destructive, sparse in sampling, and inaccurate. Our method is efficient, high-resolution, and it is the first such system evaluated in realistic experimentation over several years and hundreds of vines spread o...

Training Systems for Mechanization in Vineyards

Most 'Concord' vineyards in Arkansas have been trained to the Umbrella Kniffin (UK) system and pruned to a 30+10 schedule. In the Geneva Double Curtain (GDC) training system (a 1.2 m divided double curtain "T" type trellis) shoots are positioned vertically toward the vineyard floor. Under northern conditions, this system allows better distribution of fruiting spurs, reduced shading of interior ...

Good jobs, bad jobs, and trade liberalization

☆ Much of this paper was written while Davis wa employed by, the Federal Reserve Bank of New York. The are those of the authors and do not necessarily refle Reserve Bank of New York or the Federal Reserve Syste Elhanan Helpman and Oleg Itskhoki for very helpful co this paper, and to seminar participants at Columbia, For and the NBER. ⁎ Corresponding author at: Department of Economi York, NY 100...

STATUS OF NUTRIENTS IN VINEYARDS OF ĆEMOVSKO POLJE SUMMARY The results of investigation of nutrient status in vineyards of Ćemovsko

The results of investigation of nutrient status in vineyards of Ćemovsko polje are shown in this paper. In order to provide a more reliable basis for the definition of relationships between grapevine (nutrients in leaf petiole – P, K, Ca, Mg, Fe, Mn, Cu and Zn) and soil properties (pH, total carbonates, humus (organic matter), exchangeable Mg and available P, K, Fe, Mn, Zn and Cu), factor and c...