Agrosystems, Geosciences & Environment最新文献_第4页

Association and path coefficient analysis among morphophysiological parameters and yield in new sweet corn inbred lines and hybrids 甜玉米新自交系及杂交种形态生理参数与产量的关联及通径分析

IF 1.5

Agrosystems, Geosciences & Environment Pub Date : 2025-08-16 DOI: 10.1002/agg2.70197

Mohsen Shahrokhi, Ahmad Farid Rahmani, Saeed Khavari Khorasani, Osler Ortez

{"title":"Association and path coefficient analysis among morphophysiological parameters and yield in new sweet corn inbred lines and hybrids","authors":"Mohsen Shahrokhi, Ahmad Farid Rahmani, Saeed Khavari Khorasani, Osler Ortez","doi":"10.1002/agg2.70197","DOIUrl":"10.1002/agg2.70197","url":null,"abstract":"Sweet corn (Zea mays L. saccharata) is a globally significant crop known for its unique biochemical profile and nutritional value. However, a yield gap in production exists in semi-arid regions. The overall goal of this work was to evaluate high-yielding, adaptable genotypes in regions with limited precipitation. The work was conducted in a semi-arid environment in northwest Iran. The research utilized 10 new inbred lines and 10 hybrids in a randomized complete block design with three replications during the 2023 growing season. The study evaluated a diverse range of morphophysiological and yield traits. The analysis of variance revealed highly significant differences among the studied genotypes, affirming the relevance of inbred lines and hybrids in sweet corn improvement. Based on the mean of parameters, five sweet corn inbred lines, namely, “SMRT-1,” “SWRY,” “SMRT-3,” “SPWRHDS,” and “SMRT-4,” along with two promising hybrids, “Merit-5 × Merit-3” and “Powerhouse × Merit-5,” exhibited superior responses in terms of all studied morphophysiological parameters as well as yield. The significant positive correlations found in this study and the high direct and indirect effects on yield measured in path analysis underscore the potential for the simultaneous selection of different traits in sweet corn breeding programs. The outcomes offer important insights into the relationships between traits and yield, paving the way for developing high-yielding sweet corn genotypes adapted to semi-arid regions. The implications of this research extend to regions with similar environmental conditions, offering the promise of enhanced food security and economic development through improved sweet corn production.","PeriodicalId":7567,"journal":{"name":"Agrosystems, Geosciences & Environment","volume":"8 3","pages":""},"PeriodicalIF":1.5,"publicationDate":"2025-08-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://acsess.onlinelibrary.wiley.com/doi/epdf/10.1002/agg2.70197","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144853842","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Nitrogen fertilizer rates and supplementary irrigation effects on maize yield in Eastern Ethiopia 氮肥用量和补充灌溉对埃塞俄比亚东部玉米产量的影响

IF 1.5

Agrosystems, Geosciences & Environment Pub Date : 2025-08-11 DOI: 10.1002/agg2.70193

Waktole Mosisa, Nigussie Dechassa, Kibebew Kibret, Habtamu Zeleke, Zelalem Bekeko

{"title":"Nitrogen fertilizer rates and supplementary irrigation effects on maize yield in Eastern Ethiopia","authors":"Waktole Mosisa, Nigussie Dechassa, Kibebew Kibret, Habtamu Zeleke, Zelalem Bekeko","doi":"10.1002/agg2.70193","DOIUrl":"10.1002/agg2.70193","url":null,"abstract":"Maize (Zea mays L.) is an important food and nutritional security crop widely grown in Ethiopia. However, the crop yield is low due to low soil fertility, and erratic rainfall that results in moisture stress during the primary growing season. Field experiments were conducted in Haramaya district during 2019 and 2020 cropping seasons to investigate the effects of nitrogen (N) fertilizer rates and supplementary irrigation (SI) on maize productivity. The treatments consisted of six N fertilizer rates (0, 23, 46, 69, 92, and 115 kg N ha−1) and (control or only rain-fed), and three SI levels (50%, 75%, and 100% crop evapotranspiration (ETc). The experiments were a split-plot design in a factorial arrangement. Irrigation was assigned to the main plots whereas N fertilizer rate was assigned to the subplots. The results indicated that the optimum grain (9.10 t ha−1) and stover (12.02 t ha−1) yields were recorded in response to the application of 69 kg N ha−1 with 75% ETc SI. The grain and stover yields obtained at 69 kg N ha−1 with 75% ETc SI exceeded the grain and stover yields obtained at nil N fertilizer rate with only rain-fed by about 356% and 144%, respectively. Furthermore, 75% ETc SI with 69 kg N ha−1 resulted in the optimum (1.11 kg grain ha−1 m−1) water productivity. Therefore, it is concluded that under the early cessation of rainfall, 69 kg N ha−1 with 75% ETc SI enhanced maize productivity in the study area.","PeriodicalId":7567,"journal":{"name":"Agrosystems, Geosciences & Environment","volume":"8 3","pages":""},"PeriodicalIF":1.5,"publicationDate":"2025-08-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://acsess.onlinelibrary.wiley.com/doi/epdf/10.1002/agg2.70193","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144814518","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Correction to “Genetic diversity and population structure analysis of Pisum sativum var. abyssinicum genotypes from Northern Ethiopia using ISSR markers” 对“利用ISSR标记分析埃塞俄比亚北部Pisum sativum var. abyssinicum基因型的遗传多样性和群体结构”的修正

IF 1.5

Agrosystems, Geosciences & Environment Pub Date : 2025-08-10 DOI: 10.1002/agg2.70198

引用次数: 0

Genomic dissection of yield components in rice (Oryza sativa L.) using genome-wide association study and identification of novel genetic factors for yield-related traits 水稻（Oryza sativa L.）产量成分的全基因组关联分析和产量相关性状新遗传因子的鉴定

IF 1.5

Agrosystems, Geosciences & Environment Pub Date : 2025-08-10 DOI: 10.1002/agg2.70146

Rahele Panahabadi, Asadollah Ahmadikhah, Naser Farrokhi, Nadali Bagheri

{"title":"Genomic dissection of yield components in rice (Oryza sativa L.) using genome-wide association study and identification of novel genetic factors for yield-related traits","authors":"Rahele Panahabadi, Asadollah Ahmadikhah, Naser Farrokhi, Nadali Bagheri","doi":"10.1002/agg2.70146","DOIUrl":"10.1002/agg2.70146","url":null,"abstract":"Genome-wide association study (GWAS) is a powerful method for understanding the associations between phenotype and genomic variations. Given the growing population, increasing yield of rice as a staple food crop is important. Here, a GWAS with 33,839 single nucleotide polymorphisms (SNPs) was carried out to define genomic regions influencing rice (Oryza sativa L.) yield components under field condition in 219 rice accessions using mixed linear model-Q-K model. High-throughput phenotyping provided extensive data for grain weight (GW), length and width, number of tillers, number of filled and empty grains per panicle, plant height (PH), panicle length, internode length, flag leaf length (FLL), and flag leaf width. Fifty five significant quantitative trait loci tagged to 97 SNPs were detected across all chromosomes of rice. Except for grain width, 3–10 genomic regions were identified for other 10 morphological traits. In the close vicinity of GWAS signals, well-known genes (such as SD1 for PH) were identified. Furthermore, the role of few recently reported genes that affect yield and its components were validated including monosaccharide transporter 1, nitrate transporter NTL1 (both associated with GW), and a sugar transporter family protein that is associated with grain length. Several novel candidate genes were detected by GWAS including the genes of glycoside hydrolase family, associated with tiller number, and growth-regulating factor 7, associated with PH and FLL. In addition, several transcription factors were identified for different traits. The findings of this research give new insights into the genetic improvement of rice yield and its components using genome-based breeding strategies.","PeriodicalId":7567,"journal":{"name":"Agrosystems, Geosciences & Environment","volume":"8 3","pages":""},"PeriodicalIF":1.5,"publicationDate":"2025-08-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://acsess.onlinelibrary.wiley.com/doi/epdf/10.1002/agg2.70146","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144811073","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Biomass yield and water-use efficiency in photoperiod-sensitive sorghum genotypes in the US Southern Great Plains 美国南部大平原光周期敏感高粱基因型的生物量产量和水分利用效率

IF 1.5

Agrosystems, Geosciences & Environment Pub Date : 2025-08-04 DOI: 10.1002/agg2.70172

Rajan Shrestha, Sushil Thapa, Qingwu Xue, Jourdan Bell, Robert Aiken, Kirk Jessup, Carla Naylor, William Rooney, Thomas Marek

{"title":"Biomass yield and water-use efficiency in photoperiod-sensitive sorghum genotypes in the US Southern Great Plains","authors":"Rajan Shrestha, Sushil Thapa, Qingwu Xue, Jourdan Bell, Robert Aiken, Kirk Jessup, Carla Naylor, William Rooney, Thomas Marek","doi":"10.1002/agg2.70172","DOIUrl":"10.1002/agg2.70172","url":null,"abstract":"Photoperiod-sensitive (PS) sorghum [Sorghum bicolor (L.) Moench] has been developed as a bioenergy crop. However, little is known about PS sorghum production in semiarid environments. The objective of this study was to investigate water use, biomass yield, and water-use efficiency (WUE) in recently developed PS sorghum genotypes. Field experiments were conducted in 2 years and two locations in the US Southern Great Plains. Six genotypes (TAM08001, TAM17500, TAM17600, TAM17650, TAM17800, and TAM18000) were grown in three water regimes (dryland, irrigation at 50% evapotranspiration (ET) demand, and irrigation at 100% ET demand). For both locations, soil water extraction (SWE) occurred at a 0–2.4 m profile in 2018 but at a 0–1.2 m profile in 2019. At Bushland, TX, biomass yield ranged from 4 to 31 Mg ha−1 and seasonal ET ranged from 251 to 743 mm. In contrast, variations of biomass yield (10–19 Mg ha−1) and seasonal ET (345–483 mm) were smaller at Colby, KS. The WUE in PS sorghum (3.19–4.09 kg m−3) did not differ among water regimes except for the dryland treatment (1.52 kg m−3) at Bushland (2018). The genotypic differences in SWE, biomass yield, ET, and WUE were more pronounced under dryland conditions. TAM08001, TAM17800, and TAM17600 had greater biomass yield and WUE under drought conditions. Overall, biomass yield levels of 10–17 Mg ha−1 can be achieved in dryland in western KS, but under irrigation at 50% ET demand in the TX High Plains. Further studies are needed to better understand shoot and root traits related to drought tolerance in PS sorghum.","PeriodicalId":7567,"journal":{"name":"Agrosystems, Geosciences & Environment","volume":"8 3","pages":""},"PeriodicalIF":1.5,"publicationDate":"2025-08-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/agg2.70172","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144773583","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Ammonia volatilization from conventional and enhanced-efficiency fertilizers under surface and subsurface placement 地表和地下常规和高效肥料的氨挥发

IF 1.5

Agrosystems, Geosciences & Environment Pub Date : 2025-07-26 DOI: 10.1002/agg2.70190

Bright Ofori, William H. Frame, Ryan D. Stewart, Tyson B. Raper, Katie L. Lewis, Glendon Harris

{"title":"Ammonia volatilization from conventional and enhanced-efficiency fertilizers under surface and subsurface placement","authors":"Bright Ofori, William H. Frame, Ryan D. Stewart, Tyson B. Raper, Katie L. Lewis, Glendon Harris","doi":"10.1002/agg2.70190","DOIUrl":"10.1002/agg2.70190","url":null,"abstract":"Soil physicochemical properties influence the efficacy of strategies for reducing ammonia (NH3) volatilization from urea-based fertilizers, including fertilizer placement and the use of enhanced efficiency fertilizers (EEFs). Across the US Cotton Belt region, which spans the southern part of the country from Virginia to California and has various soil textures, little is known about how these strategies affect NH3 volatilization. Studies were conducted as a randomized complete block design using four soils from this region to evaluate the impact of surface and subsurface placement of granular urea and fluid urea ammonium nitrate, as well as EEFs, on NH3 volatilization. The EEFs were Environmentally Smart Nitrogen, N-(n-butyl)thiophosphoric triamide (NBPT) + Duromide, and nitrapyrin. NH3 volatilization from surface broadcast urea without EEFs was 38%–62% of applied nitrogen (N) across soils and was greatest on the soil with the highest initial pH. Subsurface urea placement reduced NH3 loss by 52%–80% compared to surface broadcast, and the greatest reduction was observed on the soil with the highest clay content. When urea was treated with NBPT + Duromide, NH3 volatilization was reduced by 3%–76% compared to urea without NBPT + Duromide, and the lowest reduction was on the soil with the lowest initial pH. These results provide new insights into N management for some agriculturally relevant soils within the US Cotton Belt, which have previously been less evaluated for NH3 losses. The findings can be used to tailor fertilizer application methods based on soil characteristics such as clay content and pH to minimize NH3 volatilization.","PeriodicalId":7567,"journal":{"name":"Agrosystems, Geosciences & Environment","volume":"8 3","pages":""},"PeriodicalIF":1.5,"publicationDate":"2025-07-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/agg2.70190","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144705499","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Miscanthus × giganteus increases soil maximum water holding capacity compared to maize 与玉米相比，芒草增加了土壤的最大持水量

IF 1.5

Agrosystems, Geosciences & Environment Pub Date : 2025-07-26 DOI: 10.1002/agg2.70181

Jessica T. Nelson, Maoz Dor, Andy D. VanLoocke, Jacob E. Studt, Perla K. Schrock, Marshall D. McDaniel

{"title":"Miscanthus × giganteus increases soil maximum water holding capacity compared to maize","authors":"Jessica T. Nelson, Maoz Dor, Andy D. VanLoocke, Jacob E. Studt, Perla K. Schrock, Marshall D. McDaniel","doi":"10.1002/agg2.70181","DOIUrl":"10.1002/agg2.70181","url":null,"abstract":"Soil ecosystem services, like the ability to store water, have been depleted after a century of conventional, annual cropping, and perennial crops offer a solution to this and other agricultural environmental issues. We assessed the impact of Miscanthus × giganteus (miscanthus), a perennial biomass crop, on soil water holding capacity and structure compared to continuous maize (Zea mays L.) at two sites in Iowa. After three growing seasons, we measured the following: (1) maximum water holding capacity (MWHC) with and without soil structure, and (2) total porosity and pore size distribution (PSD) via micro-computed tomography (microCT). Miscanthus increased MWHC by 14.7% across both sites relative to maize (p = 0.002), and we attributed this to structural changes due to the lack of a crop effect when measured on structureless soils. No significant changes were detected in soil organic matter, texture, total porosity, or PSD that could explain the increase in MWHC under miscanthus. Our findings suggest that the increases in MWHC are primarily due to structural changes rather than increases in soil organic matter or porosity (at least porosity detectable by microCT). This study highlights miscanthus' potential to enhance soil water storage and underscores the need for further investigation to clarify the mechanisms through which this biomass crop influences soil structural properties.","PeriodicalId":7567,"journal":{"name":"Agrosystems, Geosciences & Environment","volume":"8 3","pages":""},"PeriodicalIF":1.5,"publicationDate":"2025-07-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/agg2.70181","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144705512","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Comparative study of potassium rates and sources on potato yield and quality in Florida 施钾量和钾源对佛罗里达马铃薯产量和品质影响的比较研究

IF 1.5

Agrosystems, Geosciences & Environment Pub Date : 2025-07-26 DOI: 10.1002/agg2.70187

Simranpreet K. Sidhu, Ayush K. Sharma, Navdeep Kaur, Rajkaranbir Singh, Sukhdeep Singh, Ravinder Singh, Diego Arruda Huggins De Sá Leitão, Lincoln Zotarelli, Lakesh K. Sharma

{"title":"Comparative study of potassium rates and sources on potato yield and quality in Florida","authors":"Simranpreet K. Sidhu, Ayush K. Sharma, Navdeep Kaur, Rajkaranbir Singh, Sukhdeep Singh, Ravinder Singh, Diego Arruda Huggins De Sá Leitão, Lincoln Zotarelli, Lakesh K. Sharma","doi":"10.1002/agg2.70187","DOIUrl":"10.1002/agg2.70187","url":null,"abstract":"Sandy soils are prone to potassium (K) leaching; therefore, developing guidelines for the optimum K application rate and fertilizer source is necessary. This research aimed to evaluate the optimum K fertilizer rates and identify the best K fertilizer sources for potato (Solanum tuberosum L.) production, considering the impacts of insufficient or excessive fertilization on potato yield and tuber quality. The experiment was carried out on Florida sandy soil in a randomized complete block design with four replications and nine treatments, a combination of three K sources (potassium sulfate [K2SO4], potassium chloride [KCl], and potassium magnesium sulfate [K2Mg2(SO4)3]) and three rates (224, 280, and 336 kg K2O ha−1). Potato tuber yield was affected by different K fertilizer sources. Applying KCl resulted in a 10.3% and 9.0% increase in marketable and total tuber yield, respectively, compared to K2SO4. However, KCl application resulted in significant tuber quality deterioration regarding lower tuber-specific gravity. Yield and quality of potatoes were improved with the application of K₂Mg₂(SO₄)₃. No significant increase in tuber yield with increasing K rates from 224 to 336 kg K2O ha−1. The highest K rate (336 kg K2O ha−1) resulted in a 10-fold and threefold drop in tuber-specific gravity values in 2022 and 2023, respectively, compared to 224 kg K2O ha−1. These results suggest that K application rate and fertilizer source must be optimized to balance potato yield and tuber quality.","PeriodicalId":7567,"journal":{"name":"Agrosystems, Geosciences & Environment","volume":"8 3","pages":""},"PeriodicalIF":1.5,"publicationDate":"2025-07-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/agg2.70187","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144705515","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Growth, physiological, and yield response of soybean (Glycine max L.) to soil–vermicompost ratios under different water regimes 不同水分条件下大豆（Glycine max L.）生长、生理和产量对土壤-蚯蚓堆肥比的响应

IF 1.5

Agrosystems, Geosciences & Environment Pub Date : 2025-07-26 DOI: 10.1002/agg2.70191

Melkamu Dugassa, Walelign Worku, Amsalu Gobena Roro, Girma Abera

{"title":"Growth, physiological, and yield response of soybean (Glycine max L.) to soil–vermicompost ratios under different water regimes","authors":"Melkamu Dugassa, Walelign Worku, Amsalu Gobena Roro, Girma Abera","doi":"10.1002/agg2.70191","DOIUrl":"10.1002/agg2.70191","url":null,"abstract":"Water stress is one of the serious challenges affecting crop growth and yield. Due to decreased precipitation and higher evaporation resulting from climate change, water stress will continue to become more frequent and severe in many areas. The study was conducted to evaluate the growth, physiological, and yield response of soybean to vermicompost ratios under different water application levels. The treatments were 100% soil, 90:10, 80:20, and 70:30 soil-to-vermicompost ratios combined with water application levels of 90%, 60%, and 30% of field capacities. Results showed that vermicompost ratio, water application levels, and their interaction significantly affected the growth, physiological, and yield parameters. The 20% and 30% vermicompost ratios under optimum water application level (90% field capacity) were found superior in improving the growth, physiological, and yield parameters. Under optimum level, the 30% vermicompost ratio increased leaf area plant per plant by 15.8%, chlorophyll b (Chlb) by 60.8%, and total chlorophyll (ChlT) by 37.6% compared to the control. Under severe stress, the 20% and 30% vermicompost ratios increased Chlb by 26.8% compared to the control. Stomatal conductance was increased by 39% under optimum water application due to the 20% vermicompost ratio compared to the control. Under optimum water application, the 30% vermicompost ratio increased the grain yield plant per plant by 161% compared to the control. The findings indicate that mixing vermicompost at different ratios can mitigate the negative effects of moderate water stress. Under severe stress, no significant improvement was observed in the parameters studied except for Chlb and ChlT.","PeriodicalId":7567,"journal":{"name":"Agrosystems, Geosciences & Environment","volume":"8 3","pages":""},"PeriodicalIF":1.5,"publicationDate":"2025-07-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/agg2.70191","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144705514","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Response of cocoa (Theobroma cacao L.) seedlings to multi-nutrient fertilizer application in soilless growing media 无土栽培基质下可可幼苗对施用多养分肥料的响应

IF 1.5

Agrosystems, Geosciences & Environment Pub Date : 2025-07-23 DOI: 10.1002/agg2.70183

Lemuel Ohemeng Mintah, Nana Oduro Osei-Bonsu, Jacob Ulzen, Godfred Ofosu-Budu

{"title":"Response of cocoa (Theobroma cacao L.) seedlings to multi-nutrient fertilizer application in soilless growing media","authors":"Lemuel Ohemeng Mintah, Nana Oduro Osei-Bonsu, Jacob Ulzen, Godfred Ofosu-Budu","doi":"10.1002/agg2.70183","DOIUrl":"10.1002/agg2.70183","url":null,"abstract":"Lack of well-defined fertilizer recommendation for growing cocoa (Theobroma cacao L.) seedlings in the nursery in soilless growth media affects their vigor, resulting in poor growth and increased mortalities. This study was conducted to evaluate the response of cocoa seedlings to the combined application of NPK and/or micro/secondary nutrients in a soilless medium. The study was a cross-factorial experiment with two factors, NPK and micro/secondary nutrients, arranged in completely randomized design with three replications. There were three levels of NPK (0, 5, and 10 g/L of water) and four types of micro/secondary nutrients (control, Fe, Mg, and Mg + Fe). The combined application of NPK and micro/secondary nutrients significantly increased plant height and chlorophyll content of cocoa seedlings at 30, 60, and 90 days after application (DAA). The treatments also increased dry biomass at 60 and 90 DAA and leaf number and stem girth at only 90 DAA. The combination of either the 5 or 10 g/L NPK and Mg + Fe performed better than the combination of 5 or 10 g/L NPK with Mg or Fe alone and control. The effects of 5 g/L NPK with Mg + Fe and 10 g/L NPK with Mg + Fe on growth and biomass of cocoa seedlings were similar. Either 5 g/L with Mg + Fe or 10 g/L NPK with Mg + Fe can be used to increase growth and biomass of cocoa seedlings. This can contribute toward increased cocoa seedlings vigor at the nursery.","PeriodicalId":7567,"journal":{"name":"Agrosystems, Geosciences & Environment","volume":"8 3","pages":""},"PeriodicalIF":1.5,"publicationDate":"2025-07-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/agg2.70183","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144687850","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0