International Journal of Recent Technology and Engineering (IJRTE) ISSN: 2277-3878, Volume-8 Issue-2, July 2019 48 Published By: Blue Eyes Intelligence Engineering & Sciences Publication Retrieval Number: B1796078219/19©BEIESP DOI: 10.35940/ijrte.B1796.078219 Abstract: By continuous and rapid growth in industrialization as well as population, the agricultural lands are also becoming less and less continuously day by day which results in increase in the population of small land holders. In addition to this, because of continuous decreasing production the youth of the villages are also migrating in big cities for the employment, resulting decreasing manpower essential to perform various seedbed operations in the villages. Hence, it is the need of time for small farmers having small agricultural land and having less crop production to introduce the cost-effective farm mechanization so that they can improve production rate. Rotavator is the best option available to achieve this landmark as it is already proved that seedbed prepared by using rotavator gives highest benefit to cost ratio. For this experimental study the whole land of 9 acre area is divided into 18 plots of equal size in area. The combination of method of seedbed preparation and use of fertilizers were the preliminary criteria. The categories of fertilizer according to quantity are discussed earlier which are 50kg, 35kg and 65kg per acre respectively. The quantities of organic fertilizer used are 45kg and 60kg per acre of agricultural land for both seedbeds which are prepared manually and by using rotavator. The highest production of Pigeon Pea was obtained of 814kg was from the plot whose seedbed is prepared by using agricultural machine called rotavator and organic fertilizer; next highest production is obtained of 802 kg from the plot whose seedbed is prepared by using rotavator and the fertilizer used was chemical fertilizer. The minimum production of Pigeon Pea which is 690 kg was obtained in the plot whose seedbed was prepared manually and chemical fertilizer was used. Index Terms: Fertilizer, Plot, Production, Rotavator, Seedbed Preparation I. INTRODUCTION Rotavator can play an important role in double or multiple cropping systems where the time for land preparation is very less or limited. Rotavator is a tillage implement comprising of various types of blades like L-shaped, C-shaped and J-shaped mounted on flanges, L-shaped blades are preferred over C-shaped and J-shaped blades. This implement affixed to a shaft that is driven by tractor Power-Take-Off (PTO) [1]. It is used for mixing manure or fertilizers into soil and for seedbed preparation. It offers an advantage of superior soil mixing, better pulverisation. It also saves time and money to prepare seedbed rapidly for multi season farmers [2]. Rotavator is the best option available to achieve this Revised Manuscript Received on July 11, 2019. Ankush D. Bhishnurkar, Assistant Professor, Department of Mechanical Engineering, G. H. Raisoni Institute of Engineering & Management, Jalgaon, India Dr. Ashok G. Matani, Professor, Department of Mechanical Engineering, Government College of Engineering, Amravati, India landmark as it is already proved that seedbed prepared by using rotavator gives highest benefit to cost ratio. It is also proved that use of rotavator for seedbed preparation also saves time and money compared to other method such as use of cultivator or manually seedbed preparation done [3]. In this experimental study the whole land of 9 acre area is divided into 18 plots of equal size in area. The combination of method of seedbed preparation and use of fertilizers were the preliminary criteria for finalising the lots for study. Based on these parameters all 18 plots were divided in 9 different categories. Out of 18 plots two plots were selected randomly for each combination of method of seedbed preparation and use of type of fertilizer for the experimental study. The best combination of method of seedbed preparation and use of type of fertilizer is opted from the final combined production of two similar plots of 9 categories finalised earlier. The use of chemical fertilizer is divided into three sections according to the quantity of fertilizer used in agricultural land. First category is as per the guidelines of the Agriculture Ministry, Government of India; i.e. farmer should not use more than 50kg of chemical fertilizer per acre of land, second category is use of 35kg of chemical fertilizer per acre of land, and the final category for study is according to actual practice what farmers are using in the region i.e. 65kg of chemical fertilizer per acre of land. On the other hand the quantity of organic fertilizer selected for study is in two categories one is 45kg per acre and other is 60kg of chemical fertilizer per acre of land for both seedbed preparations were done by manually and by using rotavator [4]. II. MATERIAL AND METHODS For this experimental study the whole land of 9 acre area is divided into 18 plots of equal size in area. The combination of method of seedbed preparation and use of fertilizers were the preliminary criteria for finalising the lots for study which is shown in Table 2. The selections of plots were done randomly. Plots were selected in the group of two randomly for the every combination of seedbed preparation and use of fertilizer for this experimental study, and the final production of two plot of same category is combined to measure the total output and to compare and find which is the best combination of method of seedbed preparation and fertilizer used. The general guidelines for use of chemical fertilizer from Agricultural Ministry is 50kg/acre in agricultural lands as per the Indian soil testing manual released in 2011 by the Central Agriculture Ministry, GoI [5]. Urea is used as chemical fertilizer in this Optimizing Rotavator Design Towards Enhancing Agricultural Crop Productivity Ankush D. Bhishnurkar, Ashok G. Matani