Thumbnail Image

Thesis

Browse

20181
Reset filters
Subject: Farm, Machinery and Power × Author: Dhaliwal, Ranjot Singh × Type: Thesis × Thesis Type: M.Tech ×
Reset filters

Search Results

Now showing 1 - 1 of 1
  • Thumbnail Image
    ThesisItemOpen Access
    Development and evaluation of an engine operated walk type drop down sprayer for cotton crop
    (Punjab Agricultural University, Ludhiana, 2018) Dhaliwal, Ranjot Singh; Narang, M.K.
    An engine operated walk type drop down sprayer was developed for spraying on cotton crop. The developed sprayer had eight nozzles. Boom was developed in T-shape. Six nozzles were attached on vertical part of the boom with three nozzles spraying in left horizontal direction and other three spraying in right horizontal direction. The boom was mounted on a wheel hand vehicle. Nozzle selected for the sprayer was tested under laboratory conditions under different fluid flow pressures (7.5, 10 and 12.5 kg/cm2). The spray width, spray angle and discharge rate of the nozzle were noted. The discharge rate increased from 611.47 ml/min to 829.53 ml/min; Spray angle increased from 75.7 to 83.0 degrees and swath width varied from 85.1 to 99.8 cm with increase in pressure from 7.5 to 12.5 kg/cm2. The sprayer was evaluated in the field at 10 kg/cm2 for three different forward speeds (1.5, 2.0 and 2.5 km/h) and three different plant height of cotton crop (1.0, 1.3 and 1.75 m) at Research Farm of the Department of Farm Machinery and Power Engineering, PAU, Ludhiana The spot size, area covered, droplet density and field capacity were recorded and analyzed. The droplet density varied from 185.67 to 386 drops/cm2 for 1.5 km/h and at forward speed of 2.5 km/h, the droplet density varied from 53.33 to 286 drops/cm2. The maximum field capacity was found to be 0.16 ha/h at forward speed of 2.5 km/h and at plant height of 1.0 m. The bioefficacy of the developed sprayer was also evaluated at Krishi Vigyan Kendra, Goneana and at farmer’s fields in village Goneana, district Shri Muktsar Sahib at three levels of forward speed of 1.5, 2.0 and 2.5 km/h and at three heights of crop i.e. 1.0, 1.3 and 1.75 m and compared with the knapsack sprayer. The population of whitefly was recorded before spray and after three, seven and ten days of spray. The maximum percentage reduction over control was found at forward speed of 2.0 km/h and at plant height of 1.0 and 1.3 m.