The productivity of machine-tractor units depends on the length idle move performed in headland. Analytical dependences for determining when making T-turns by a unit with mounted machine field irregular shape have been specified article. Five types considered two variants – open turn and closed turn. Each them is carried out directions motion. A total 20 turns described. methodology specific co...

The article analyzes the experience of agricultural aviation usage for sowing grain crops in Soviet Union 1930s. A historiographical review this problem has been carried out, which testifies to its indisputable scientific, theoretical and applied relevance. motives aircraft attracting operations first half 1930s have indicated, methods scale experiments conducting aerial revealed. By analyzing ...

The seed bank dynamics of the three co-occurring obligate-seeder (i.e. fire-sensitive) Proteaceae species, Banksia ericifolia, Banksia marginata and Petrophile pulchella, were examined at sites of varying time since the most recent fire (i.e. plant age) in the Sydney region. Significant variation among species was found in the number of cones produced, the position of the cones within the canop...

The research aims to develop a seed drill for precise seeding on ridge with drip irrigation. basic principles and methods of classical mechanics, mathematical analysis, statistics were used in this study. existing technologies sowing cotton seeds are analyzed. authors have developed method the crest irrigation its implementation, including working body fertilizer, shaper gasket comb attached hi...

In order to solve the problem that current precision seeder has difficulty in sowing pepper seeds, an air-suction seed metering device based on air supply and quantitative was developed. Combined with its basic structure working principle, CFD-DEM coupling method used for analysis, best combined hole parameters were obtained. A single factor experiment pass rate, replay missed rate as experimen...