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Worldwide, the production of agricultural residues exceeds five billion metric tons per year. Regardless of their many applications and substantial potential to increase crop and animal productivity, many crop residues, particularly in Asian, African, and Arabian nations, are burned. This detrimental practice limits the recycling of soil nutrients while increasing air pollution and wellness risks. Enhancing feed efficiency while simultaneously lowering production costs and increasing animal protein is a key objective of nutritional supplements in livestock feeding. Antibiotics have been utilized in farm animals at sub-therapeutic levels to increase feed use effectiveness and digestion, as well as animal welfare and performance. However, the present ban on antibiotics as nutritional supplements has boosted the search for substitutes, with natural feed additives considered cutting-edge options. On the other hand, feed that has undergone biological treatment improves animal productivity, feed intake, and digestibility. Nevertheless, the absence of agents and expertise and substrate weight decrease may result in a 40% dry matter loss limits application. In this review, we look at the importance of detrimental residue administration and the advancement and adoption of technologies to handle surplus residue.
Worldwide, the production of agricultural residues exceeds five billion metric tons per year. Regardless of their many applications and substantial potential to increase crop and animal productivity, many crop residues, particularly in Asian, African, and Arabian nations, are burned. This detrimental practice limits the recycling of soil nutrients while increasing air pollution and wellness risks. Enhancing feed efficiency while simultaneously lowering production costs and increasing animal protein is a key objective of nutritional supplements in livestock feeding. Antibiotics have been utilized in farm animals at sub-therapeutic levels to increase feed use effectiveness and digestion, as well as animal welfare and performance. However, the present ban on antibiotics as nutritional supplements has boosted the search for substitutes, with natural feed additives considered cutting-edge options. On the other hand, feed that has undergone biological treatment improves animal productivity, feed intake, and digestibility. Nevertheless, the absence of agents and expertise and substrate weight decrease may result in a 40% dry matter loss limits application. In this review, we look at the importance of detrimental residue administration and the advancement and adoption of technologies to handle surplus residue.
Soybean plants cultivated using mulched drip irrigation planting technology have the following characteristics during the harvest period: green stems and leaves, and a high straw/grain ratio. Moreover, the threshing device of a soybean combine harvester is difficult to adapt to, resulting in an increase in the accumulation and unevenness of the threshed mixture. This leads to an increase in impurity content and the loss rate. We conducted a single-factor experiment on a self-developed longitudinal/axial-flow soybean threshing and separation test bench, employing drum speed, feeding rate, and threshing clearance as experimental factors. The influence of the soybean threshing and separation device’s working parameters on the distribution and uniformity of the threshed mixture in the axial and radial directions of the drum was explored through experiments. The results showed that the mass of the threshed mixture and soybean seeds showed a trend of first rapidly increasing and then slowly decreasing in the axial direction of the drum. Additionally, the mass showed a distribution feature of large values on both sides and small values in the middle in the radial direction. A lower drum speed, greater threshing clearance, and a smaller feeding rate make the radial distribution of a threshed mixture more uniform. Based on the combination of the crushing rate and unthreshed rate, the optimal working parameter combination was determined to be as follows: a drum speed of 500 r/min, a feeding rate of 6 kg/s, and a threshing clearance of 25 mm. The findings of this research offer valuable insights for the structural optimization and design enhancement of threshing and cleaning mechanisms within soybean combine harvesters.
Aim of study: To quantify the data regarding soil compaction induced beneath the tillage working depth purely due to the tilling action of the different active tillage machinery in sandy loam soil. Area of study: Research Farm, CCS Haryana Agricultural University, Hisar, Haryana, India Material and methods: The data were quantified in terms of cone index (CI), bulk density, and porosity. Its comparison was also made with conventional practice followed by the farmers, involving only passive-tillage tools (i.e. cultivator and disc harrow). The results did not represent the tractor-imposed soil compaction under the tires. Main results: The maximum soil compaction beneath the working depth in terms of increment in soil CI occurred with rotavator followed by conventional practice, PTO-operated disc tiller, and power harrow, which are in the range of 6.67-7.05%, 5.17-5.29%, 4.29-4.97%, and 2.08-2.36%, respectively. The increment in bulk density was similar to that as mentioned above with values in the range of 3.96-4.06%, 2.30-2.42%, 1.71-1.88%, and 1.31-1.40%, respectively. Furthermore, the maximum decrement in soil porosity occurred with rotavator followed by conventional practice, PTO-operated disc tiller, and power harrow which were in the range of 5.67-6.61%, 2.74-2.94%, 1.71-1.88%, and 2.06-2.25%, respectively. Research highlights: The active tillage rotary machinery cause soil compaction due to the applied compressive force on the soil during their tilling action. They create optimal topsoil tilth but can compact deeper soil due to blade speed, necessitating the selection of ideal rotational and forward speeds to minimize this compaction.
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