Riego diferencial en esparrago (Asparagus officinalis L.) de dos anos.
1990
Jerez B Jorge Antonio
The irrigation treatments were the water restitution, of 125%; 100%; and 50% of the Class A pan evaporation, throughout drip irrigation. Soil moisture was measured three times a week, by a neutrometer. In addition the depth of water table level was monitored. The following evaluation were made: - Fern dry weight, crown dry matter, canopy development. The result shows that irrigation treatment of 100 allow accumulation of greater fern dry weight in the treatment of 100%. Treatments which received 50% and 125% of pan evaporation gave less quality of fern dry weight. Dried matter of the crown showed the same trend as those of accumulation fern dry weight. The canopy growth showed a different response when it was evaluated in the principal or at the recovery area. At the principal evaluation area, the average height/stem and in the average diameter/stem, showed a trend of largest values in the treatment which received 100% of the pan evaporation, and the smallest in the treatment of 50%. The recovery area showed statistical differences at the treatment of 75%; number of shoot, summation of stem height/plant and summation of stem diameter/plant. The treatments received between 880 mm and 370 mm water in the season. In the evaluated period it was determined real maximum evapotranspiration of 6.28 mm and a minimum of 2.56 mm for the treatment with the greatest accumulation of the fern dry weight.
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