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All Journal SAINS TANAH - Journal of Soil Science and Agroclimatology Unram Journal of Community Service (UJCS)
Suwardji Suwardji
University of Mataram
Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Environmental Science Law, Crime, Criminology & Criminal Justice Social Sciences

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Influence of biochar amendments on the soil quality indicators of sandy loam soils under cassava–peanut cropping sequence in the semi-arid tropics of Northern Lombok, Indonesia Sukartono Sukartono; Bambang Hari Kusumo; Suwardji Suwardji; Arifin Aria Bakti; Mahrup Mahrup; Lolita Endang Susilowati; Fahrudin Fahrudin
SAINS TANAH - Journal of Soil Science and Agroclimatology Vol 19, No 2 (2022): December
Publisher : Universitas Sebelas Maret

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/stjssa.v19i2.65452

Abstract

Low nutrient retention and soil organic matter depletion are the major challenges of the cropping system in the sandy loam soils of Northern Lombok, Indonesia. A field experiment was conducted to evaluate the influence of biochar-based organic amendments on the soil quality of sandy loam soils under cassava (Manihot Esculenta, Crants)–peanut (Arachis Hypogeae L.) cropping sequence. The treatments were as follows: biochar (10 ton ha-1) and rice straw  (3 ton ha-1)  (B1);  biochar  (10 ton ha-1), cattle manure (10 ton ha-1), and rice straw (3 ton ha-1) (B2);  biochar (10 ton ha-1)  and cattle manure (10 ton ha-1) (B3);  biochar (10 ton ha-1) and cattle manure (10 ton ha-1) plus rice straw mulch (3 ton ha-1) applied on surface soils (B4),  and without organic amendments (B0) as control. Results showed that the biochar-based organic amendments significantly improved several soil quality indicators such as SOC, total N, available P, Ca, cation-exchange capacity (CEC), and aggregate stability but had no significant effect on pH, K, and Mg. Improvement in soil quality was strongly indicated by an increase in the growth and yield of cassava and peanuts. Treatments B1, B2, B3, and B4 generally had a comparable effect on soil parameters and tended to improve the growth and yield of cassava and peanuts. Cassava was responsive to treatments B2 (biochar, cattle manure, and rice straw) and B3 (biochar and cattle manure) with its actual yield of 27 tons ha−1, which is a 40% increase compared with that in the control. As a secondary crop growing after cassava, peanuts also exhibited higher yields in all amended plots compared with that in the control. The highest yield was obtained in B2 (1.38 ton ha−1), followed by B4 (1.36 ton ha−1), B1 (1.33 ton ha−1), and B3 (1.25 ton ha−1). In conclusion, the incorporation of biochar, cattle manure, and crop residues (rice straw) into soils is a promising option to maintain soil quality and sustainably produce cassava and peanuts in the sandy loam soils of the semi-arid tropics of Lombok, Indonesia.
Farmer Behavior in Cocoa Farming Activities in Gitak Demung Village, Gangga District, North Lombok Regency Nurdani Fajriani; Mulyati Mulyati; Suwardji Suwardji
Unram Journal of Community Service Vol. 5 No. 2 (2024): June
Publisher : Pascasarjana Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/ujcs.v5i2.633

Abstract

The aims of this study is to investigate farmers' behavior in cocoa farming activities in dryland farming in Gitak Demung Subvillage, Village of Gangga, Sub-district of North Lombok District. The research was conducted using surveys and in-depth interviews (FGD) to collect data on the cultivation practices carried out by cocoa farmers and the factors that influence their behavior (How Many Samples were taken). The survey results showed that farmers in Gitak Demung Village have a very good level of behavior, with the majority of farmers implementing good cultivation practices and in accordance with recommendations. In-depth interviews revealed that farmers' knowledge and awareness of good cultivation practices are the main factors influencing their behavior. In addition, adequate access to resources and technology also plays an important role in shaping good farmer behavior. The findings suggest that the extension and education efforts that have been undertaken by the government, agricultural institutions, and related organizations have had a positive impact in improving farmers' behavior. In conclusion, this study concludes that farmers in cocoa farming activities in Gitak Demung sub-village a very good level of behavior, and improvements in farmers' knowledge and access to agricultural resources and technology need to be considered to maintain and improve this good behavior to achieve sustainable agricultural production of cacao
Co-Authors Arifin Aria Bakti Bambang Hari Kusumo Fahrudin Fahrudin Lolita Endang Susilowati Mahrup Mahrup Mulyati Mulyati Nurdani Fajriani Sukartono