\n<\/strong><\/a>The above table is based on the assumption that land is fixed\nfactor of production and total cost of one unit of labour is Rs. 40.00. At\nevery successive unit, total cost increases at the same time. Thus, at first\nunit of labour, the average cost of production comes to Rs. 8 per quintal.<\/p>\n\n\n\nWith the use of second, third and fourth units of labour and capital, it increases to Rs. 10, Rs. 12 and Rs. 14.5 respectively. <\/p>\n\n\n\nLAW OF DIMINISHING RETURNS<\/strong><\/figcaption><\/figure>\n\n\n\nIn the diagram, units of labour and capital are shown on\nOX-axis and average cost on OY-axis. At every successive unit, average cost\nincreases from 8 to 10, 12 and 14.5. Therefore, upward slope of IC curve\nreflects increasing cost.<\/p>\n\n\n\n
<\/span>CAUSES\nOF OPERATION OF LAW OF DIMINISHING RETURNS<\/strong><\/span><\/h2>\n\n\n\n1. Prominence\nof Nature in Agriculture and Primary Industries:<\/strong><\/strong><\/p>\n\n\n\nDr. Marshall has pointed out that the part\nwhich nature plays conforms to diminishing returns and the part which man play\nbrings in increasing return. It has been said by economist that nature is\nsupreme in agriculture, where-as man dominates in manufacturing industries.<\/p>\n\n\n\n
2. Fixed\nSupply of the Factors:<\/strong><\/strong><\/p>\n\n\n\nSupply of some means are fixed, therefore,\nthis rule applies. For example\u2014The supply of land is fixed and if more of\nlabour and capital is introduced in the same land the Law of Diminishing Return\nis bound to operate.<\/p>\n\n\n\n
3. Misuse\nor Improper Use of the Factors of Production:<\/strong><\/strong><\/p>\n\n\n\nEconomists are of this opinion that proper and optimum\nuse of the factors of production should be made. If proper use has not been\nmade then the law will operate.<\/p>\n\n\n\n
4. Lack of Perfect Substitutability between Factors:<\/strong><\/p>\n\n\n\nIn this all means of production are not perfect\nsubstitutes to each other. Therefore, by increasing one factor the loss of\nanother factor cannot be completed. For example\u2014By increasing the supply of\nlabour, the shortage of land cannot be met, therefore, the Law of Diminishing return\nis bound to operate.<\/p>\n\n\n\n
5. Dis-economies in Production:<\/strong><\/p>\n\n\n\nIf the production is increased without considering its\neffects, then there will be dis-economies and the Law of Diminishing Return\nwill start operation.<\/p>\n\n\n\n
<\/span>APPLICATION OF THE LAW OF DIMINISHING RETURNS IN DIFFERENT FIELDS<\/strong><\/span><\/h2>\n\n\n\nThe Law of Diminishing Marginal Return does not apply in\nagriculture alone. Prof. Marshall says that this law is limited to agriculture\nonly but actually this is not the case. In the present age this law has become\na general law and is applicable to other industries also besides agriculture.<\/p>\n\n\n\n
<\/span>1. In Mining Industries:<\/span><\/h4>\n\n\n\nLaw of Diminishing Return is applicable in mining\nindustries also. The amount of materials in the mine is limited. In mining\nindustries as more labour and capital is applied, so the level of depth has to\nbe increased. As the depth increases the expense and difficulties start\nincreasing. As more labour and capital is applied the marginal utility of mine\ngoes on decreasing.<\/p>\n\n\n\n
<\/span>2. In Fisheries:<\/span><\/h4>\n\n\n\nThis law is applicable in fishing also. Limited area is\nthe chief reasons of it. In fishing as more labour and capital is increased the\nmarginal utility goes on decreasing. The reason is that the quantity of fishes\ngoes on decreasing day by day.<\/p>\n\n\n\n
<\/span>3. In House Building Industry:<\/span><\/h4>\n\n\n\nThe Law of Diminishing Return is also applicable in\nhouse-building industry. This law is applicable specially in the Case of\nmulti-Storeyed building. As labour and capital is applied for building the\nmaterials has to be carried higher and higher. The proportion of utility\nascertained is not equal to the proportion of labour and capital used.<\/p>\n\n\n\n
<\/span>4. In Forest Industry:<\/span><\/h4>\n\n\n\nThe law also applies in forest industry, first the wood\nof nearer place is taken and cutting goes on but as the wood of nearer place in\nexhausted, going to deep forest for wood would involve more expense and thus\nthe Law of Diminishing Return starts operation.<\/p>\n\n\n\n
<\/span>5. In Manufacturing Industries:<\/span><\/h4>\n\n\n\nProf. Marshall\u2019s concept is that this law is not applied\nwith regard to manufacturing industries. According to Marshall in these\nindustries several internal and external benefits are required due to\nscientific inventions, division of labour and use of machines. So the cost of\nproduction decreases and marginal utility increases instead of decreasing.<\/p>\n\n\n\n
Modern economists do not agree with the Marshallian view.\nThey are of this opinion that this law is applicable in manufacturing\nindustries also. The difference is that in agriculture this law applies more\nquickly as compared to that of manufacturing industries. So it is clear that in\nmanufacturing industries also as labour and capital is increased the marginal\nutility goes on decreasing after a certain limit.<\/p>\n\n\n\n
<\/span>6. In Intensive and Extensive\nCultivation:<\/span><\/h4>\n\n\n\nThe Law of Diminishing Return operates in both intensive\nand extensive cultivation. If more and more labour and capital are applied to\nthe same piece of land, the return per dose diminishes after some time. Thus,\nthe law applies to intensive cultivation. But if on the other hand the farmer\nbrings more and more land under cultivation even then the returns will\ndecrease.<\/p>\n\n\n\n
It is because, either the new land is inferior\n(otherwise, it would have been cultivated first) or because it, is at a\ndistance and in which the cost of transport increases the cost of production.\nThus, the Law of Diminishing returns also applies where cultivation is carried\non extensively.<\/p>\n\n\n\n
<\/span>WHY THE LAW APPLIES TO AGRICULTURE?<\/strong><\/span><\/h3>\n\n\n\nThe law of diminishing returns has a vast application,\nbut it specially applies in agriculture sector. The most important factors\nresponsible due to which the law is applicable in agriculture are undernoted:<\/p>\n\n\n\n
<\/span>1. Limited Land:<\/span><\/h4>\n\n\n\nThe most important factor due to which this law applies\nto agriculture is the limited size of land. Production is sought to be\nincreased by employing more and more units of variable factors. This will\nresult in diminishing returns.<\/p>\n\n\n\n
<\/span>2. Less Use of Machinery:<\/span><\/h4>\n\n\n\nIn the agricultural sector, there is limited use of\nmachinery as compared to industry. The reason is that in the agricultural\nsector most of the work is done by hands. This also results in low\nproductivity. Thus, agriculture remains deprived of several external and\ninternal economies of scale. Therefore, the law of diminishing returns applies\nin agricultural sector.<\/p>\n\n\n\n
<\/span>3. Natural Factors:<\/span><\/h4>\n\n\n\nAnother reason due to which the law of diminishing\nreturns applies is the natural influence like rainfall, climate, floods etc.\nEven, in case man makes all best efforts but nature is not in favour, the law\nof diminishing returns is surely to apply.<\/p>\n\n\n\n
<\/span>4. Seasonal Occupation:<\/span><\/h4>\n\n\n\nAgriculture is a seasonal occupation. The people are not\nbusy on land throughout the year. They remain busy only during the period of ploughing\nand harvesting season. This period is approximately of six months. For the\nremaining period, both farmers and cattle remain idle which reduce the\nproduction per worker. It is, thus, the law of diminishing returns quickly\napplies to agriculture sector.<\/p>\n\n\n\n
<\/span>5. Difference in the Fertility of Land:<\/span><\/h4>\n\n\n\nAll pieces of land are not equally fertile. When demand\nfor land increases even less fertile land are also brought under cultivation.\nIt means less marginal returns and high cost of production.<\/p>\n\n\n\n
<\/span>6. Ineffective Supervision:<\/span><\/h4>\n\n\n\nAgricultural operations are spread over the vast areas.\nTherefore, effective supervision becomes most risky and difficult. The result\nis the law of diminishing returns.<\/p>\n\n\n\n
<\/span>7. Less Chances of Division of Labour:<\/span><\/h4>\n\n\n\nIn agricultural sector, there are very less chances of\ndivision of labour. Therefore, production on large scale is ruled out. It also\nresults into the operation of the law of diminishing returns.<\/p>\n\n\n\n
<\/span>IMPORTANCE OF LAW OF DIMINISHING RETURNS<\/strong><\/strong><\/span><\/h3>\n\n\n\nThe law of diminishing returns is universal which applies\neverywhere. Marshall was of the view that this law is applicable in every\nbranch of industry or even in all human affairs. It is the basis of all laws.<\/p>\n\n\n\n
The importance of the law is\ngiven below:<\/strong><\/p>\n\n\n\n<\/span>1. Theory of Population:<\/span><\/h4>\n\n\n\nMalthusian theory of population is based on the law of\ndiminishing returns. According to Malthusian theory, production of food grains\ndoes not increase in the same proportion in which population increases. In\nother words, production of food grains increases in arithmetical ratio (1, 2,\n3, 4, 5,) whereas population increases in geometrical ratio (2, 4, 8, 16, 32,\n64\u2026). The reason is that agriculture obeys the law of diminishing returns.<\/p>\n\n\n\n
<\/span>2. Basis of the Theory of Production:<\/span><\/h4>\n\n\n\nThe law of diminishing returns helps the producer to\ncalculate the optimum production. In simple terms, this law signifies whether\nthe optimum level of production in any field has reached or not.<\/p>\n\n\n\n
<\/span>3. Basis of Innovation:<\/span><\/h4>\n\n\n\nBasically, every producer wants to postpone the law. It\nis only possible when the new methods of production, new tools, raw materials\netc are innovated. All these factors put a check on the operation of the law of\ndiminishing returns.<\/p>\n\n\n\n
<\/span>4. Basis of the Theory of Rent:<\/span><\/h4>\n\n\n\nRicardian theory of rent is also based on this very law.\nAccording to Ricardian theory, rent Arises due to difference in fertility.\nFirst dose of labour and capital applied to land yields more return as compared\nto second dose. The difference between first and second dose is called the\nrent. It means:<\/p>\n\n\n\n
Rent = Produce from first dose\n\u2013 Produce from second dose.<\/strong><\/p>\n\n\n\n<\/span>5. Basis of the Theory of Distribution:<\/span><\/h4>\n\n\n\nMarginal productivity theory of distribution is also\nbased on the law of diminishing returns. According to this theory, as the\nproducer employs more and more factors of production, the marginal productivity\nof each factor of production goes on falling. Thus, we can conclude that this\nlaw is the basis of the theory of distribution.<\/p>\n\n\n\n
<\/span>6. Importance to Industry:<\/span><\/h4>\n\n\n\nThe manufacturing industry has a great significance of\nthe law of diminishing returns. Every manufacturing industry has a higher per\ncapita income as compared to agricultural sector. The reason is that this law\noperates at a very early stage in the agricultural sector and the per capita\nincome remains low. But in the manufacturing industry, the operation of this\nlaw can be prevented for a very long period. This is the reason; it is called\nuniversal as it applies everywhere and anywhere. According to Wicksteed, \u201cThis\nlaw is as universal as the law of life itself\u2019.<\/p>\n\n\n\n
<\/span>LIMITATIONS OF THE LAW OF DIMINISHING RETURNS<\/strong><\/strong><\/span><\/h3>\n\n\n\nMarshall has explained the law in general terms which is\nsubject to criticism. This means that the law is not applicable in all cases.<\/p>\n\n\n\n
The limitations of the law are\ndiscussed as under:<\/strong><\/p>\n\n\n\n<\/span>1. New Soil:<\/span><\/h4>\n\n\n\nThe law of diminishing returns does not hold well in case\nof new soil i.e., when the land is cultivated for the first time. Certainly in\nsuch cases, production will be higher initially.<\/p>\n\n\n\n
<\/span>2. Improved Methods of Cultivation:<\/span><\/h4>\n\n\n\nIn modern times, when there are improved methods of\ncultivation, this law is not applicable. The improved methods of production are\ncropping pattern, new seeds, and fertilizer, mechanization and irrigation\nfacilities. When these methods are used, there are good chances of more\nproduction. Thus, there are chances of increasing returns even in agriculture\nsector.<\/p>\n\n\n\n
<\/span>3. Shortage of Capital:<\/span><\/h4>\n\n\n\nThe law of diminishing returns does not apply in case of shortage of capital or insufficiency of capital. If, we have ample stock of capital, the law of increasing returns would operate and not the law of diminishing returns. These factors can check the operation of the law of diminishing returns temporarily. But this law is bound to apply ultimately. These can be delayed in the application of the law but the law is definite to apply sooner or later.<\/p>\n\n\n\n