We consider the population dynamics of two competing species sharing the same resource, which is modeled by the carrying capacity term of logistic equation. One species (farmer) increases the carrying capacity in exchange for a decreased survival rate, while the other species (exploiter) does not. As the carrying capacity is shared by both species, farmer is altruistic. The effect of continuous...

The average lifetime of sows as observed in production herds is primarily influenced by management decisions. Usually the farmer decides to cull a sow, either because he expects that a gilt's average productivity is higher than the marginal productivity of the sow, or because the current number of sows exceeds the production capacity, e.g. in the farrowing department. Several studies have shown...

Lowland rice is the main commodity crop for Dos Tahi farmer group in Nagori Bandar Rakyat, District, Simalungun Regency. However, scarcity of fertilizers an inhibiting factor process cultivating plants. Many people have livestock and one them cattle. still find it difficult to cow dung. Cow dung waste can be processed into liquid organic fertilizer from both solid waste. The training on making ...

In collaboration with a group of hydroponics farmers, an activity as part community service implementation has been carried out in Pasuruan, Eastern Java. The aims to develop 900 Wp solar power plant capable providing energy for running the essential electrical devices system uninterrupted. This idea is resolve issue when outage occurs. Moreover, reliance on public grid also adds additional exp...

A number of farmer-led approaches to technology transfer have emerged in recent times to replace the largely discredited Transfer of Technology (TOT) and Training and Visit (T&V) models of agricultural extension. One such initiative is the Farmer Field School (FFS), an experiential learning approach originally developed in Southeast Asia for the integrated management of rice pests but adaptable...