AEJSA Volume 13, Number 1: January-March, 2019


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Technical Efficiency and Sources of Inefficiency in Smallholder Oil Palm Plantation in North Mamuju District, West Sulawesi Province, Indonesia.

Dimas Deworo Puruhito, Jamhari, Slamet Hartono and Irham

ABSTRACT The management of smallholder oil palm plantations is currently being sought to apply the best agriculture practices that incorporate technical, environmental, social and economic elements. This study aimed to estimate the level of technical efficiency in smallholder oil palm plantations, along with the sources of inefficiency. The variables of land area, the use of NPK fertilizer, the use of non-family labor, age of oil palm plants, and the distance of the estate to the river have positive effect, while the variable of estate sanitation frequency negatively affects the technical efficiency of smallholder oil palm plantation. Technically, smallholder oil palm plantations have been efficient.

[ FULL TEXT PDF 1-8 ] DOI: 10.22587/aejsa.2019.13.1.1

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Production Risk and Factors Influencing Strawberry Farming in Purbalingga Regency, Indonesia

Irene Kartika Eka Wijayanti, Jamhari, Dwidjono Hadi Darwanto, Any Suryantini

ABSTRACT This study was aimed to: analyze the production risk level of strawberry farming and determine the effect of the use of strawberry farming inputs on the production risk and the factors influencing the production risk. The research was conducted in Purbalingga Regency, Central Java Province, Indonesia. The samples of the study were 100 farmers that were chosen through Slovin method. The research method used was survey. The analytical method used was: coefficient of variation and multiple linear regression analysis with heteroskedasticity model. The results showed that (1) the risk of strawberry production in 2016 was higher than in 2017, (2) there were increases in labor use, manure and sweet charly varieties that reduced the production risk of strawberry farming in Purbalingga Regency.

[ FULL TEXT PDF 9-17 ] DOI: 10.22587/aejsa.2019.13.1.2

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The Demand for Rice and The Factors That Influence in The Special Region of Yogyakarta

Siwitri Munambar, Masyhuri, Jangkung HM, Lestari Rahayu W

ABSTRACT Rice is one of the staple foods of the population in Indonesia, one of which is the Special Region of Yogyakarta. Many other carbohydrate sources, but the demand for rice remains high. this study examines the factors that influence rice demand. The method of this study is Two-Stage Least Square. Based on the results of Two-Stage Least Square analysis concluded that the demand for rice is positively influenced by the perception variables of the importance of rice, the number of family members and negatively by the work of the head of the household.

[ FULL TEXT PDF 18-21 ] DOI: 10.22587/aejsa.2019.13.1.3

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Labile and Dan Stable Carbon in the Soil of Monoculture and Polyculture Fields in Karangsambung, Kebumen, Indonesia

Sri Nuryani Hidayah Utami, Nurvita Trias Puspitasari, Eko Hanudin

ABSTRACT There is increasing interest in soil organic carbon (SOC) in agricultural soils, as it contributes to soil fertility and also to the mitigation of climate change when organic carbon sequestration is enhanced. The amount of carbon stored in each land is a type of soil and how it is managed. The objective of this research was to determine and studying the status of labile and stable carbon in monoculture and polyculture fields. This research was arranged in Completely Randomized Design (CRD) Factorial consisting of 2 factors, i.e. two different cropping systems (monoculture and polyculture) and two different layers of the soil (0-15 cm and 15-30 cm). This research showed that there was no significant difference in C-mineralization between monoculture soil at the first and second layer (16.31-16.73 mg) and polyculture soil (15.64 – 15.96 mg). There was also no significant difference observed on POMC content showing value of 1.52 % (monoculture) and 1.40 % (polyculture). Meanwhile, the content of SMBC in monoculture soil (916.43 mg/kg) was higher than in polyculture soil (475.17 mg/kg). The content of water-soluble C in monoculture soil (836.78 mg/kg) was not significantly different from that in polyculture soil (815.66 mg/kg). Humic acid content in polyculture soil (1.84 g/kg) was higher than in monoculture (1.49 g/kg), and conversely, fulvic acid content in monoculture soil (2.83 g/kg) was higher than in polyculture soil (2.33 g/kg). There was no significant difference in humin content between monoculture soil (0.971 g) and polyculture soil (0.970 g). Based on the result, polyculture fields system had higher stable carbon content, while monoculture fields had higher labile carbon content.

[ FULL TEXT PDF 22-33 ] DOI: 10.22587/aejsa.2019.13.1.4

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Growth, Yield Components and Yield of Cucumber Cultivars Grown at Different Atmospheric Locations of Western Regions of Saudi Arabia

Magdi A.A. Mousa, Adel D. Al-Qurashi and Ahmed A.S. Bakhashwain

ABSTRACT The present work was conducted during 2013 and 2014 to study the genetic stability of four cucumber cultivars under effects of three different atmospheric locations with regard growth, yield component and yield traits. The experiments were carried out at three atmospheric locations of Western Region of Saudi Arabia, at open field of Jeddah and open field and greenhouse at Hada Al-Sham (140km eastern Jeddah). . The experiments were position out in Randomized Complete Block Design (RCBD) using 4 replications. The results showed dominant weather of the greenhouse enhanced heights and stem fresh and dry mass of local cultivar ‘F1 106’, roots fresh and dry mass of ‘Beta Alfa’, delayed flowering and increased leaves contents of Chll a and b of all tested cultivars. Enhanced no. of branches/plant of cv. ‘Medina’ and exceeded no. of male flowers of cvs. ‘Madina’ and ‘Bet Alfa’ were observed under open field conditions of Hada Al-Sham. The dominant weather of open field at Jeddah enhanced early flowering of all tested cultivars, increased ratio of female: male flowers for ‘Beta Alfa’ and ‘Medina’, enhanced leaves and roots fresh and dry mass of cv ‘ Medina’ no. of fruits/plant of ‘F1 106’, and increased weight of fruits/plant (kg) and total yield (ton/ha) of cvs. ‘F1 106’, ‘Medina’ and ‘Beta Alfa’. The tested cucumber cultivars were not consistently responded under the dominant atmosphere of the three different experimental sites, and its growth and yield were highly affected by the dominant weather of the experimental locations. Extensive work still required to study the effects of weather change on crops genome stability particularly cucumber.

[ FULL TEXT PDF 34-46 ] DOI: 10.22695/aejsa.2019.13.1.5

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