A comparison of different sprayer in term of pesticide deposistion and biological efficacy against leaf hopper (Empoasca decipens and Asymetrasca decedens) in cotton
2004
Tucer, A.,Celal Bayar Univ., Saruhanly (Turkey). Technical College of Saruhanly, 45800 Saruhanly-Manisa, Turkey | Tezcan, F.,Plant Protection Research Institute, Bornova-Izmir (Turkey). 35040 Bornova-Izmir, Turkey | Guler, H.,Ege University, Bornova-Izmir (Turkey). Faculty of AGriculture, Dept. of Agricultural Machinery, 35040 Bornova-Izmir, Turkey | Kocer, H.,Plant Protection Research Institute, Bornova-Izmir (Turkey) | Erkal, N.,Plant Protection Research Institute, Bornova-Izmir (Turkey)
The pesticide and biological efficiency of Electraboom, Ulva+, Micronex, knapsack sprayer and conventional field sprayer were compared against leaf hopper at different dosage in cotton field. The experiments were conducted in two stages. One of them was basic growth stage and the other one was fruit formation stage. Effectiveness of equipment was measured 4-7-11-14 days after the treatments in basic growth stage and 3-6-10-13 days (for Macronex 4-7-11-14 days) after the treatments in fruit formation stage. While Micronex and Ulva+ at the quarter of the recommended dosage provided significantly high effect in basic growth stage, Electraboom at the half of recommended dosage gave higher effects in fruit formation stage when comparing with others. Deposition pattern on target area was conducted as qualitative and quantitative in fruit formation stage. Fluorescent tracer deposits and droplet density (number of drops per square centimeter) on water sensitive paper were measured at the top and bottom levels of plant as well as on the upper and un-derside of the leaves. Tracer deposits and droplet density within all treatment tended to decrease progressively from upper to lower canopy levels. Tracer deposition and droplet densities differences were found significant. Contamination in soil was the least with Micronex and was the highest with knapsack sprayer.
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Эту запись предоставил Technical University in Zvolen