Calagem e gessagem na vulnerabilidade da palma de óleo ao déficit hídrico DOI Open Access

Magda do Nascimento Farias

Опубликована: Окт. 31, 2023

A acidez e a baixa fertilidade natural associadas ao déficit hídrico constituem importantes fatores limitantes manejo nutricional adequado no cultivo de palma óleo em solos tropicais. Desta forma, utilização das práticas corretivas tem demonstrado resultados promissores quanto às melhorias características químicas do solo redução da vulnerabilidade plantas eventos hídrico. Assim, o trabalho objetivou avaliar interação diferentes regimes hídricos status nutricional, na massa seca jovens nos atributos químicos um Latossolo Amarelo. O delineamento experimental foi blocos inteiramente casualizados, com três repetições, esquema fatorial duplo (2 x 4); sendo duas lâminas água (25 100 % evapotranspiração- ETc) quatro condições (sem aplicação gesso calagem (testemunha) – T1, T2, gessagem T3 associação T4). parcela caracterizada por uma planta óleo, cultivada tubos policloreto vinila-PVC (diâmetro 30 cm altura 60 cm, volume= 42,4 dm3) preenchido solo. calcário aplicado 20 dias antes instalação experimento incorporado camada superficial (0 cm), visando elevação saturação bases para %. superfície solo, sem incorporação, época transplantio plantas. Aos 360 transplantio, nas camadas 0-20, 20-40 40-60 foram avaliados os seguintes solo: pH (H2O), teores Al3+, cálcio - Ca2+, magnésio Mg2+, enxofre S, potássio K+, fósforo P carbono (C) lábil rizosférico (camada cm) não (camadas 40- cm). (V %), Al+3 (m %) CTC potencial (T), então estimados. Em seguida, determinada folhas, estipe raiz plantas, determinação meio análise dos acúmulos Ca, Mg, K P. Posteriormente, avaliado também análises teor relativo (TRA) foliar. De modo geral, superficial, demonstra propriedades subsuperficial. Destacam-se aumento disponibilidade C rizosférico. Além disso, menor hídrica afetou processo transporte desses nutrientes direção raízes levando maiores concentrações principalmente trocáveis, assim favorecendo menores Al 3+e m %, V potencial. Por outro lado, as submetidas maior lâmina à apresentaram expansão sistema radicular, aumentando capacidade absorção há contribuição produção parte aérea raiz. Ainda, tais tratamentos influenciaram positivamente hidratação celular, evidenciado pelo incremento foliar óleo. Palavras-chaves: Acidez Estresse Práticas corretivas. Teor nutriente.

Agronomy explains large yield gaps in smallholder oil palm fields DOI Creative Commons
Juan Pablo Monzón,

Ya Li Lim,

Fatima A. Tenorio

и другие.

Agricultural Systems, Год журнала: 2023, Номер 210, С. 103689 - 103689

Опубликована: Июнь 2, 2023

Palm oil production is a major source of income for millions smallholders in Indonesia. However, actual yield remains low relation to the attainable yield. While emphasis has been given planting material as factor explaining smallholder fields, role agronomic management received less attention. We assessed palm productivity independent fields quantified gaps and their causes using data on fresh fruit bunch (FFB) practices collected over two years across 977 fields. The gap was estimated each field difference between latter crop model, local weather field-specific soil age. Statistical techniques were used identify factors gaps. Average represented 42% yield, with largest occurring young plantations. Our analyses identified gaps, including nutrient management, harvest interval, weed control, pruning. Improved can help increase profit existing There an opportunity produce more current plantation area via better agronomy, generating positive economic impact at national levels, while reducing pressure clear new land cultivation. Research & extension programs should be re-oriented give management.

Язык: Английский

Процитировано

18

Potassium limits productivity in intensive cereal cropping systems in Southeast Asia DOI
Gonzalo Rizzo, Fahmuddin Agus, Zuziana Susanti

и другие.

Nature Food, Год журнала: 2024, Номер 5(11), С. 929 - 938

Опубликована: Окт. 22, 2024

Язык: Английский

Процитировано

7

First things first: Widespread nutrient deficiencies limit yields in smallholder oil palm fields DOI Creative Commons

Hendra Sugianto,

Juan Pablo Monzón, Iput Pradiko

и другие.

Agricultural Systems, Год журнала: 2023, Номер 210, С. 103709 - 103709

Опубликована: Июнь 28, 2023

Indonesia is the most important oil palm producing country. Nearly 40% of planted area managed by smallholders, with yields well below potential. Efforts to increase productivity have focused on source planting material, little attention paid plant nutrition. To assess degree which current in smallholder fields limited nutrients scenarios distinct sources material. We collected detailed data leaf nutrient concentration from 30 derive minimum sampling size needed diagnose status. Subsequently, we yield and type 973 importance status material determination yield. Potassium (K) deficiency was widespread (88% fields) often severe. two thirds were also deficient for nitrogen (N) boron (B), half phosphorous (P) deficient, one third magnesium (Mg) deficient. Nutrient imbalances, especially between K N, common. Fields sufficient P, levels yielded 47% more (equivalent 1.2 t ha−1) than across entire range materials. conclude that improved nutrition increases fresh fruit irrespective The advantage certified reflected higher extraction rates. Increased existing plantations through offers opportunity improve profits livelihoods, whilst at same time increasing total production without bringing new areas into cultivation.

Язык: Английский

Процитировано

13

Improving yield and profit in smallholder oil palm fields through better agronomy DOI

Hendra Sugianto,

C. R. Donough, Juan Pablo Monzón

и другие.

Agricultural Systems, Год журнала: 2025, Номер 224, С. 104269 - 104269

Опубликована: Фев. 2, 2025

Язык: Английский

Процитировано

0

Enhancing Tribological Performance of Electric Vehicle Lubricants: Nanoparticle-Enriched Palm Oil Biolubricants for Wear Resistance DOI Creative Commons
Agus Nugroho, Muhammad Kozin, Rizalman Mamat

и другие.

Heliyon, Год журнала: 2024, Номер 10(22), С. e39742 - e39742

Опубликована: Окт. 24, 2024

The transition to electric vehicles (EVs) calls for sustainable advancements in automotive lubricants, as traditional fossil-fuel-based products pose environmental challenges. Palm oil-based biolubricants enriched with nanoparticles present a promising eco-friendly alternative that meets the thermal and tribological demands of EVs. This paper aims analyze development nanoparticle-enriched palm biolubricants, aimed at improving sustainability performance vehicle (EV) lubrication systems. critical findings highlight integrating such graphene, titanium dioxide, aluminum oxide into lubricants significantly enhances their properties. These enhancements include 26.21%-34% reduction coefficient friction (COF), 12.99%-30% wear, improved stability. study found outperformed options terms wear under high-temperature pressure conditions, supported by regression analysis. demonstrates offer viable conventional lowering impact reducing greenhouse gas emissions energy consumption. innovation has significant implications both environment industry, offering solution reduces dependency on fossil fuels, EV efficiency, aligns global goals. Besides, this discusses drawbacks future studies direction.

Язык: Английский

Процитировано

3

Shortening harvest interval, reaping benefits? A study on harvest practices in oil palm smallholder farming systems in Indonesia DOI Creative Commons
Rosanne de Vos,

Lisa Nurfalah,

Fatima A. Tenorio

и другие.

Agricultural Systems, Год журнала: 2023, Номер 211, С. 103753 - 103753

Опубликована: Авг. 30, 2023

Smallholders are responsible for a large share of global palm oil production. Yet, in Indonesia, the main producing country, smallholders' yields remain low. Better management practices, including short harvest interval (HI, number days between two rounds), could help to raise smallholder yields. However, at present, HI is long fields and drivers underlying this phenomenon poorly understood. We explored agronomic, socio-economic, institutional factors that underlie harvesting practices independent farming systems Indonesia assess scope sustainable intensification through shorter reduced losses. Combining methods from agronomy anthropology, we followed 950 farmers six representative locations across via farmer diaries over period years establish correlation with yield. To quantify relationship, conducted post-harvest field measurements, explain which impact did qualitative interviews surveys. The smallholders our study ranged 10 39 (average: 17-d). Half (>16-d). Key impacting include annual fresh fruit bunch (FFB) yield, total area per farmer, trusted labor availability, plantation accessibility, FFB price. Farmers responded low yield by prolonging increase productivity optimize transportation costs. This contributes better understanding relation systems, uncovering how socio-economic sometimes override agronomic considerations. Long can potentially lead loss loose fruits missed bunches, reduce quality overripe bunches. obtain benefits requires collective action incentives along supply chain streamline sale process.

Язык: Английский

Процитировано

4

Overview of the special issue on oil palm sustainable intensification DOI
Patricio Grassini, M.A. Slingerland

Agricultural Systems, Год журнала: 2024, Номер unknown, С. 103877 - 103877

Опубликована: Янв. 1, 2024

Язык: Английский

Процитировано

0

Sustainability Index Analysis for Integration of Oil Palm and Cattle Gender-Based in Tidal Land DOI
Eni Siti Rohaeni,

Yanti Rina Darsani,

Retna Qomariah

и другие.

Опубликована: Янв. 1, 2024

Язык: Английский

Процитировано

0

Fair Pricing Formulation for Palm Oil Fresh Fruit Bunch Produced by Smallholder Farmers: A Development Method to Form a More Effective Formula for Palm Oil Fresh Fruit Bunch Pricing to Achieve a Fair Price for Smallholder Farmers DOI Creative Commons
Loso Judijanto,

Dimas Pamungkas

Journal of Lifestyle and SDGs Review, Год журнала: 2024, Номер 5(2), С. e03859 - e03859

Опубликована: Дек. 10, 2024

Objectives: The study aims to address the disparity in pricing received by smallholder farmers for their palm oil fresh fruit bunches (FFBs). It seeks establish a fair formula that balances interests of and crude (CPO) mills, ensuring sustainability farming practices supporting achievement Sustainable Development Goals (SDGs). Methods: research models cost structures CPO mills over 30-year investment horizon. Using profitability analyses constraint Internal Rate Return (IRR) is greater than or equal IRR derives formula. proposed calculates price FFBs (PFFB) as function (PCPO) extraction yield (OER), supported statistical simulations. Results: presents equation, PFFB = -2438.7971 + 0.1784 PCPO 10219.2072 OER, which transparent based on significant parameters. provides practical approach determining FFBs, equitable profit distribution between mills. This eliminates need prolonged negotiations while fostering financial stability farmers. Conclusion: offers straightforward method FFB prices, aligning supports industry's objectives contributes achieving SDGs empowering promoting trade practices.

Язык: Английский

Процитировано

0

TIME-SERIES EXPANSION OF OIL PALM PLANTATION IN PULANG PISAU REGENCY DOI Creative Commons
Baskara Suprojo,

Muhammad Irfan Affandi

JURNAL GEOGRAFI Geografi dan Pengajarannya, Год журнала: 2024, Номер 22(2), С. 95 - 110

Опубликована: Дек. 24, 2024

The primadonna of oil palm is unavoidable as the largest commercially cultivated crop in tropical regions, especially Indonesia. escalation demand aligns with Land Use Cover (LULC) conversion and transformation global agricultural landscape. Expansion Kalimantan proves that areas increased from 90,300 ha to 3,164,000 ha, 90% converted land being forest areas. Complexity these issues drives need conduct research on plantation expansion Pulang Pisau Regency. This study presents manifestation LULC into plantations through remote sensing. results show 2009-2023, non-compliance applicable spatial regulations, changes agrarian structure surrounding communities. analysis can serve a decision-making tool for stakeholders sector effective efficient terms cost, time, effort. Keywords: Spatial Analysis, Oil Palm, Community, Government Regulation

Язык: Английский

Процитировано

0