Money supply and rising food prices 
In the quantity theory of money explained because 
the emergence of price increases is due to the 
excessive form of demand caused by changes in the 
money supply (Nopirin, 2000), according to Irving 
fisher, the effect of the money supply on price 
changes is formulated through MV = PT, namely M 
(money) = money supply, V (Velocity) = velocity of 
money circulation, P (Price) = price of goods, T 
(Trade) = Number of goods traded, according to 
Fisher the price of goods is influenced by the money 
supply due to purchasing power owned by the 
community it causes high consumption power 
owned by the community so that the consumption 
cycle owned by the community stimulates the flow 
of goods from producers to consumers. And 
according to Mankiw (2003) that the relationship 
between the money supply and the price increase 
cannot be done if it is only seen in the short term, 
but it must be seen in the long term in order to get 
good results and significant results. the relationship 
between the money supply and the price increase 
cannot be seen in the short term, therefore in 
explaining the relationship between the increase in 
prices and the money supply it will not be as tight as 
if it was seen over a ten year period friedman and 
Schwartz (1987). 
 
Exchange Rate (Exchange Rate) and Increase in 
Food Prices 
According to Cassel (1918) the exchange rate 
between the two countries should be equal to the 
price level of the country's ratio, the fall in the form 
of domestic purchasing power of a domestic 
currency will directly be followed by a depreciation 
in the country's currency against domestic money 
market but if it happens otherwise the domestic 
purchasing power becomes increased it will cause 
deflation which is directly followed by a form of 
appreciation in the currency, this theory is the theory 
that is most often tested for validity because there is 
a form of comparison that sees the form of power 
capability buy high which causes inflation / price 
increases (Cassel, 1918). According to Bob (2002) 
Purchasing Power Parity Theory is a theory that 
states that the exchange rate between money tends to 
lead to an equilibrium condition, purchasing power 
should be a society equivalent to the purchasing 
power of people in other countries. The occurrence 
of price increases, can be seen through the decline in 
the exchange rate of the rupiah against the value of 
foreign currencies because the depreciation of the 
exchange rate will cause an increase in the price of 
imported goods, this directly affects the fluctuations 
in domestic prices. 
 
Total Food Production (rice and soybeans) and 
Increase in Food Prices 
The reduced availability of food will have an impact 
on the reduction in basic needs needed by the 
community, this will lead to a form of food crisis, 
food availability involves three aspects, namely 
production, distribution, consumption, food 
availability supported by actors such as producers, 
processors (suryanan, 2004 ) The form of imbalance 
between the amount of production (reflection of 
supply) and demand will cause changes in the value 
of elasticity, as well as the result of demand and 
supply that will cause price fluctuations (Nicholson, 
2000). The form of production, trade and 
consumption of food will affect fluctuations in food 
prices (changes in food prices) due to forms of 
processing that require costs and forms of demand 
and supply that make food prices rise and fall, 
therefore maintaining stability will cause a price 
balance ( Ellis, 1992). 
 
Weather (rainfall and maximum temperature) 
and increase in Food Price Increase 
According to Gilbert and Morgan (2010, in Alisher 
and Daniel 2012) Weather change is considered as 
one source of variability in the prices of agricultural 
commodities. Trovero and Von Braun (2008 in 
Lazzorini 2012) mention weather changes can cause 
a form of potential, such as floods, droughts which 
ultimately damage food crops and hamper the form 
of food distribution, which in turn has an impact on 
rising prices of food commodities Trovero and Von 
Braun (2008 in lazzorini 2012 According to 
Banumurty, PamiDua and Lokendra (2012) the 
impact of weather is very influential on 
macroeconomic policies because weather is a 
fundamental factor that affects the positive and 
negative significance of the results of the 
agricultural sector, and the impact of climate change 
directly has a very negative impact on price 
increases and production growth food. food price 
increases can be caused by weather because the 
weather influences the shape of the crop, and the 
form of crop failure, besides the weather also causes 
disruption of the form of distribution patterns such 
as the occurrence of landslides causing obstruction 
of the distribution, resulting in scarcity of food 
commodities in the end it caused a tendency to 
increase food prices, due to problems in the form of 
distribution patterns 
 
Previous research 
Previous research was conducted by Salman and 
Adnan 2013, which is about the Determinants of 
High Food Prices of the Case of Pakistan wherein 
this research examines the factors that cause food 
price increases in Pakistan, which are seen through