Agriculture Irrigation

Controlling variability in vineyard with variable rate drip irrigation

Author
Nadav Netafim, R&D Center, Derech Hashalom 10, Tel Aviv, Israel
Vineyards worldwide are spatially variable in canopy size and growth rate, a feature which is exhibited in both low-and high-yielding areas. A variable rate drip irrigation (VRDI) system was developed and operated over 2 years out of a 4-year experiment in a red wine vineyard. During the first year of the experiment, the vineyard was irrigated by the farmer and exhibited high variability in both yield and canopy size. Following 2 years' operation of the VRDI system, both canopy cover and yield were found to be homogeneous across the plot. At the 4th year, the vineyard was irrigated once again by the farmer which resulted in variability patterns similar to the first-year patterns.

Understanding pressure

Author
by Nelson Irrigation Corporation, Senninger
Pressure regulation can be a topic of dispute. Some industry experts and growers will tell you that it is the best way to save water and energy, while others will claim it is not necessary unless you have uneven land to irrigate or significant changes in pipeline pressures caused by end guns or corner arms. This joint presentation to the industry is to emphasize Nelson’s and Senninger’s commitment as irrigation component manufacturers of the importance of pressure regulation. Over our years in the industry, both companies have seen the benefits of pressure regulators and the problems encountered if they are not used when they should be. The truth is that all irrigation systems experience pressure fluctuations. Proper use of pressure regulators helps maintain the overall efficiency of an irrigation system.

Mechanical control and diangnosis methods adopted for the restoration of old pivots and linear move machines

Author
Michel Histel with contribution of J. Rabe, P. Gallien, R. Finot, J.F. Cornacchia, C. Duruisseau, A. Satger, B. Molle, J. Maya, M. Simeone, P. Lefloch, F. Torres, P. Chagneau, A. Hamami Replacement parts represent 40% of the pivot market in Europe. The
Replacement parts represent 40% of the pivot market in Europe. The Chamber of Agriculture, CUMA d’Aquitaine (Cooperative set up for the Common Use of Agricultural Equipment), GRCETA (Regional Group of Agricultural Research Centres) and certain manufacturers. and installers have developed protocols for checking these old devices