检索结果-南通市图书馆

Influence of intercrop Population and Applied Poultry Manure Rates on Component Crops Productivity Responses in a Snake Tomato/Celosia Cropping System

引用

American Journal of Plant Sciences 2015年第7期6卷 1040-1057页

作者： Olusegun Olufemi Olubode Temitayo Ayobami Ogunsakin Adewale Waheed Salau Federal University of Agriculture Abeokuta Nigeria

Productivity responses using organic approaches will assist to elucidate crop responses under different intercrop population levels. Experiments were conducted to determine the growth, yield and productivity responses of component crops in snake tomato/celosia mixtures to intercrop population and organic manure application rates. The 4 × 4 factorial experiment arranged in completely randomized design (CRD) was replicated three times. The snake tomato using potting media was cultivated in 2013 and 2014 at 100,000 plants/ha (one plant/pot) alongside intercrop celosia at three population levels of 100,000 (P1), 200,000 (P2) and 300,000 plant/ha (P3) (10, 20 and 30 plants/pot respectively) where sole crops (P0) served as control. The crop mixture was supplied with poultry manure (PM) at 5 (F1), 10 (F2) and 20 t/ha (F3) using the unfertilized (0 t/ha-F0) as control. The result showed that plants in “year II” had longer vines, thicker girth and more side-vines while those in “year I” had more leaves, more male/female flowers, longer and thicker fruit sizes and heavier fruit yield. intercropping with celosia at P1 produced plants with thicker girth and more leaves, plants at P1 - P3 had more side-vines while all intercropped plots had more female flowers, but P1 had thicker fruit girth compared to sole crops. Plants with F3 had longer vine length, more leaves and more number of side-vines, more female flowers, longer fruits, thicker fruit girth and heavier fruit yield, but those with F1 or F3 had thicker girth compared to other rates while those with F2 had better productivity advantage with LER and ATER at >1.0. In conclusion, snake tomato and celosia in crop mixture were best with F2 and F3 respectively, although intercropping retarded growth and yield of the component crops but P1 was comparable with sole.

关键词： Celosia Growth intercrop Population Productivity Indices Snake Tomato Yield

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Assessing the Efficacy of Wheat-Soybean Based intercropping System at Different Plant Densities in Bambili, Cameroon

引用

American Journal of Plant Sciences 2024年第4期15卷 235-251页

作者： Lendzemo E. Tatah Jeazet K. Teitiogo Oben Tom Tabi Tange D. Achiri Njualem D. Khumbah Chi Christopher Tamu Department of Crop Production Technology College of Technology University of Bamenda Bambili Cameroon Department of Agronomic and Applied Molecular Sciences Faculty of Agriculture and Veterinary Medicine University of Buea Buea Cameroon School of Tropical Agriculture and Natural Resource Catholic University of Cameroon Bamenda Cameroon Department of Agricultural and Environmental Engineering College of Technology University of Bamenda Bambili Cameroon

Wheat is one of the most important cereals in the world, serving as a staple for millions globally. In the wake of the geopolitical crisis between Russia and Ukraine, it has become incumbent for many countries to invest in wheat production. Improving cropping systems for wheat production is paramount. intercropping cereals with legumes has tremendous advantages. Therefore, this study was designed to optimize wheat production by intercropping it with soybean at different densities. Between March and August 2023, a randomized complete block design trial was conducted in Bambili, North West of Cameroon with treatments T1 (wheat monocrop at 200,000 plants ha−1), T2 (soybean monocrop at 250,000 plants ha−1), T3 (200,000 wheat and 125,000 soybean ha−1), T4 (100,000 wheat and 250,000 soybean ha−1), T5 (200,000 wheat and 250,000 soybean ha−1) and T6 (100,000 wheat and 125,000 soybean ha−1). Results revealed that growth parameters of wheat were not significantly influenced by monocrop or intercrop. The yield of wheat was significantly higher in the monocrop than the intercrop treatments, with slight variation amongst the intercrop treatments. Soybean yield was higher in the monocrop than in the intercrop, with no variations amongst the intercrop treatments. Only the land equivalence ratio (LER) for T5 was greater than 1.0. The competitive ratio for T5 was 0.54 for wheat and 1.90 for soybean, comparatively lower than the other monocrop treatments. intercropping wheat and soybean at 200,000:250,000 ratio is recommended.

关键词： Competitive Ration Land Equivalence Ration intercrop Soybean Wheat

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Legume Green Manure and intercropping for High Biomass Sorghum Production

引用

Agricultural Sciences 2024年第6期15卷 605-621页

作者： Clark B. Neely Francis M. Rouquette Jr. Cristine L. S. Morgan Frank M. Hons William L. Rooney Gerald R. Smith Department of Soil and Crop Science Washington State University Pullman WA USA Texas A&M AgriLife Research Overton TX USA Soil Health Institute Morrisville NC USA Department of Soil and Crop Science Texas A&M University College Station TX USA

Before the advent of cheap, synthetic fertilizers, legumes were commonly used as green manure crops for their ability to fix atmospheric nitrogen (N). A three-year study at Overton, TX examined legume integration into high-biomass sorghum (Sorghum bicolor L.) production systems on a Lilbert loamy fine sand recently cultivated after a fertilized bermudagrass [Cynodon dactylon (L.) Pers.] pasture. In this split-split plot design, ‘Dixie’ crimson clover (Trifolium incarnatum L.) and ‘Iron and Clay’ cowpea (Vigna unguiculata L.) were integrated into a high-biomass sorghum production system to evaluate impacts on N concentration, C concentration, and yield of high-biomass sorghum and their impacts on soil total N and soil organic carbon (SOC). Main plots were split into crimson clover green manure (CLGM) and winter fallow (FALL) followed by three sub-plots split into warm-season crop rotations: cowpea green manure (CPGM), cowpea-sorghum intercrop (CPSR), and sorghum monocrop (SORG). Three N fertilizer treatments (0, 45, 90 kg N∙ha−1) were randomized and applied as sub-sub plots. The CLGM increased (P sorghum biomass yield (16.5 t DM∙ha−1) 28% in year three but had no effect in the first two years. The CPSR treatment reduced sorghum yield up to 62% compared to SORG;whereas CPGM increased sorghum yield 56% and 18% the two years following cowpea incorporation. Rate of N fertilizer had no effect on sorghum biomass yield. Decrease in SOC and soil N over time indicated mineralization of organic N and may explain why no N fertilizer response was observed in sorghum biomass yield. Cowpea showed strong potential as a green manure crop but proved to be too competitive for successful intercropping in high-biomass sorghum production systems.

关键词： High-Biomass Sorghum Legumes Green Manure intercrop Cowpea Crimson Clover Soil Organic Carbon Soil Nitrogen

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Potato/Maize intercropping reduces infestation of potato tuber moth, Phthorimaea operculella(Zeller) by the enhancement of natural enemies

引用

Journal of Integrative Agriculture 2020年第2期19卷 394-405页

作者： ZHENG Ya-qiang ZHANG Li-min CHEN Bin YAN Nai-sheng GUI Fu-rong ZAN Qing-an DU Guang-zu HE Shu-qi LI Zheng-yue GAO Yu-lin XIAO Guan-li State Key Laboratory for Conservation and Utilization of Bio-Resources in Yunnan Yunnan Agricultural UniversityKunming 650201P.R.China College of Agriculture&Biology Technology Yunnan Agricultural UniversityKunming 650201P.R.China State Key Laboratory for Biology of Plant Diseases and Insect Pests Institute of Plant ProtectionChinese Academy of Agricultural SciencesBeijing 100193P.R.China

The potato tuber moth(PTM),Phthorimaea operculella(Zeller),is one of the most economically significant insect pests for potato in both field and storage *** evaluate the infestation,reduction of potato yield and the control efficacy for PTM,field tests were conducted in two seasons by intercropping of potato as the host plant with maize as a non-host plant of *** intercropping patterns were tested,which were 2 rows of potatoes with either 2,3,or 4 rows of maize(abbreviated 2 P:2 M,2 P:3 M,and 2 P:4 M),and the monocropped potato as the control,2 rows of potatoes,without maize,(abbreviated 2 P:0 M).Results showed that the population and infestation of PTM in the 2 P:3 M intercropping pattern was significantly lower than those in 2 P:2 M,2 P:4 M and the monocropping pattern of 2 P:0 M,due to the enhancement of natural *** mines and tunneling in potato leaves in 2 P:3 M intercropping were significantly lower than those in 2 P:2 M and 2 P:4 M *** population of parasitoids and the parasitism rate of PTM in intercropping pattern of 2 P:3 M were significantly higher than that in intercropping pattern of 2 P:2 M,2 P:4 M and monocropping pattern of 2 P:0 *** conclude that the potato intercropped with maize reduced the adult and larva populations,and reduced the damage from PTM by enhancing the number of parasitoids and the level of *** greatest population density of parasitoids and parasitism rate were in the intercropping pattern of 2 rows of potatoes with 3 rows of *** data indicate that the host/non-host intercropping patterns can be used as a biological control tactic against PTM by enhancing the density of natural enemies in the agro-ecosystems.

关键词： potato tuber moth Phthorimaea operculella(Zeller) intercrop biological control natural enemies parasitoids

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

A conceptual framework and an empirical test of complementarity and facilitation with respect to phosphorus uptake by plant species mixtures

引用

Pedosphere 2022年第2期32卷 317-329页

作者： Chunjie LI Thomas W.KUYPER Wopke VAN DER WERF Junling ZHANG Haigang LI Fusuo ZHANG Ellis HOFFLAND College of Resources and Environmental Science National Academy of Agriculture Green DevelopmentChina Agricultural UniversityBeijing 100193China Wageningen University Soil Biology GroupP.O.Box 476700 AA WageningenThe Netherlands Wageningen University Centre for Crop Systems AnalysisP.O.Box 4306700 AK WageningenThe Netherlands Inner Mongolia Key Laboratory of Soil Quality and Nutrient Resources Key Laboratory of Grassland Resource(IMAU)Ministry of EducationCollege of GrasslandResources and EnvironmentInner Mongolia Agricultural UniversityHohhot 010018China

Plant species have different traits for mobilizing sparingly soluble phosphorus (P) resources,which could potentially lead to overyielding in P uptake by plant species mixtures compared to monocultures due to higher P uptake as a result of resource (P) partitioning and ***,there is circumstantial evidence at best for overyielding as a result of these *** (the outcome) is easily confused with underlying mechanisms because of unclear *** aimed to define a conceptual framework to separate outcome from underlying mechanisms and test it for facilitation and complementarity with respect to P acquisition by three plant species combinations grown on four *** conceptual framework describes both mechanisms of complementarity and facilitation and outcomes (overyielding of mixtures or no overyielding) depending on the competitive ability of the species to uptake the mobilized ***/chickpea mixtures were grown in pots on two calcareous soils mixed with calcium-bound P (CaP) and phytate P (PhyP).Cabbage/faba bean mixtures were grown on both acid and neutral soils mixed with P-coated iron (hydr)oxide (FeP) and ***/maize mixtures were grown on all four *** carboxylate concentration and acid phosphatase activity (mechanisms) as well as plant P uptake and biomass (outcome) were determined for monocultures rhizosphere and species *** of P uptake occurred in millet/chickpea mixtures on one calcareous *** found no indications for P acquisition from different P sources,neither in millet/chickpea,nor in cabbage/faba bean *** and faba bean on the neutral soil differed in rhizosphere acid phosphatase activity and carboxylate concentration,but showed no *** and maize,with similar root exudates,showed overyielding (the observed P uptake being 22%higher than the expected P uptake) on one calcareous *** concluded that although differences in plant physiological tr

关键词： carboxylate intercrop phosphatase phosphorus acquisition phosphorus mobilization phoshorus source rhizosphere root exudation

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

STUDIES ON intercropPING OF PORPHYRA HAITANENSIS *** ET *** WITH BAY SCALLOP ARGOPECTEN IRRADIANS LAMARCK

引用

Chinese Journal of Oceanology and Limnology 1993年第1期11卷 16-20页

作者：郑宝福李世英管明金 Institute of Oceanology Academia Sinica Qingdao 266071 Jiaonan Seafood Manufactory Jiaonan 266426

Results of the experiment of northward transplantation of Porphyra haitanensis showed thatintercrop of P. haitanensis with Bay Scallop is feasible because the growth duration of both of them is about the same in August - *** use of cultivating area, lowering its cost and increasing its product per unit area as well as improving the ecological envronment are realized during intercrop.

关键词： intercrop P. haitanensis Bay Scallop conchocelis sporeling

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

intercropping barley with pea for agronomic and economic considerations in northern Ontario

引用

Agricultural Sciences 2012年第7期3卷 889-895页

作者： T. S. Sahota Sukhdev S. Malhi Agriculture and Agri-Food Canada Melfort Canada Thunder Bay Agriculture Research Station Thunder Bay Canada

intercropping, a mix of non-legume and legume crops, can improve crop yield and/or economic returns and reduce input costs. Field experiments (barley-pea intercrop) were conducted in 2008, 2010 and 2011 on an Oskondoga silt loam soil at Thunder Bay, Ontario, Canada, to determine the effect of intercropping barley (non-legume) and pea (legume) on grain yield, land equivalency ratio (LER), grain quality (protein concentration-PC), N uptake and economic returns. Barley and pea were grown as mono crops and in combinations as intercrops (both in the same row/and alternate rows). Nitrogen fertilizer was applied at 0, 40 and 80 kg·N·ha-1 to mono crop barley and at 0, 20 and 40 kg·N·ha-1 to barley-pea intercrop combinations. On an average of three years, application of 80 kg·N·ha-1 increased grain yield of barley by 846 kg·ha-1 as a sole crop and by 420 - 488 kg·ha-1 in the two intercropping combinations. Compared to barley and pea as sole crops, grain yield with barley-pea intercropping was greater by 266 kg·ha-1 with alternate row combination and by 223 kg·ha-1when both crops were grown in the same row. The LER values suggested 7% - 17% less land requirement for barley-pea intercropping than sole crops. Net returns from barley-pea intercropping without applied N greatly improved ($854 - $939 ha-1) compared to barley sole crop with 80 kg·N·ha-1($628 ha-1), although the net returns were highest for pea grown as a sole crop without applied N ($1141 ha-1). For barley as a sole crop, PC in grain increased with applied N. Compared to barley as sole crop with zero-N, PC in barley grain increased when barley was intercropped with pea. In barley-pea intercrop treatments, application of N fertilizer had no significant effect on PC in barley grain, although PC in pea grain was much higher than PC in barley grain. The response trends of total N uptake in grain were similar to grain yield. The findings suggest that pea or barley-pea intercropping could be an option for organic farming

关键词： Barley Economic Returns intercrop N Fertilizer N Uptake Pea Protein Grain Yield

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Evaluation of coffee intercropped with rice and plantain at early stage of field establishment in Nigeria

引用

Agricultural Sciences 2012年第3期3卷 347-350页

作者： Amos Olatunde Famaye Gerald O. Iremiren Kayode Olufemi Ayegboyin Kayode Babatunde Adejobi Cocoa Research Institute of Nigeria Ibadan Nigeria

An intercropping experiment involving coffee (sole), coffee/rice, coffee/plantain and coffee/ rice/plantain was carried out between 2007 and 2008 at the Cocoa Research Institute of Nigeria (CRIN) Uhonmora Substation, Edo State situated in a derived Guinea Savanna agro-ecological zone of Nigeria. The experiment was a Randomized Complete Block Design (RCBD) with above mentioned treatment and replicated three times. The spacing used for coffee and plantain was 3 m apart respectively while rice was sown 30 cm apart. Morphological parameters such as plant height, stem girth, leaf area and canopy score were taken on coffee monthly while the survival count were taken after two months of field establishment. Yields of the component crops were also collected at maturity. Data collected were subjected to statistical analysis of variance and LSD used to separate the means that were significant. Result obtained showed 98% survival without any significant difference among the treatments. On vegetative growth, coffee/rice and coffee/plantain were significantly higher (p intercrop. Grain and bunch yields from rice and plantain respectively in the intercrops compare favourable well to what obtain from coffee sole. From the result obtained, it could be concluded that there was no deleterious effect on growth when rice and plantain were intercropped with coffee. Therefore coffee/rice and coffee/plantain intercropped with better performance could be recommended to coffee farmers in Nigeria rather than sole planting of coffee.

关键词： Evaluation Coffee Rice Plantain intercrop

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Improving crop yield, N uptake and economic returns by intercropping barley or canola with pea

引用

Agricultural Sciences 2012年第8期3卷 1023-1033页

作者： Sukhdev S. Malhi Agriculture and Agri-Food Canada Melfort Canada

Two field experiments were conducted from 2009 to 2011 on a Gray Luvisol (Typic Haplocryalf) loam at Star City, Saskatchewan, Canada, to determine the effectiveness of intercropping barley or canola with pea in improving crop yield, total N uptake, seed quality, Land Equivalency Ratio (LER) and economic returns compared to barley, canola or pea grown as monocultures. Average seed yields of barley-pea or canola-pea intercrops were usually greater than those of barley, canola or pea as sole crops. In intercrops, application of N fertilizer increased seed yield of barley or canola but had only slight beneficial effect on the combined seed yield of both crops together. The LER values for intercrops were usually much greater than 1, suggesting less land requirements of intercropping systems than monoculture for the same seed yield. Net returns were lowest for barley as sole crop. Without applied N, net returns were slightly lower for barley-pea intercrop and slightly greater for canola-pea intercrop than pea as a sole crop. Generally, protein concentration in canola or barley seed was higher and oil concentration in canola seed was lower in intercrop combinations compared to sole crops. Response trends of total N uptake in seed or straw were usually similar to that of seed or straw yield. In conclusion, intercropping barley or canola with pea improved yield, N uptake and net returns, suggesting the potential of barley-pea or canola-pea intercrops and pea for organic farming systems.

关键词： Barley Canola Crop yield Economic returns intercrop N Fertilizer N Uptake Oil Pea Protein

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Quality and Crop Yield Potential of Moderately Degraded Alfisols Under Different Nutrient Inputs and Cropping Patterns

引用

Pedosphere 2019年第2期29卷 235-247页

作者： Wiqar AHMAD Farmanullah KHAN Zahir SHAH Muhammad Jamal KHAN Department of Soil and Environmental Sciences The University of Agriculture PeshawarAMK Campus Department of Soil and Environmental Sciences The University of AgriculturePeshawar

Crop performance on degraded soil needs special management practices to overcome soil quality limitations. In a 2-year(from summer 2006 to winter 2007–2008) field trial on a moderately degraded Alfisol in Swabi District(34°7′12′′N, 72°28′20′′E), Pakistan,the effects of three cropping patterns, cereal-cereal(CC), cereal-legume(CL), and cereal-cereal and legume intercrop(CLI), were tested in main plots under four fertilization treatments in sub-plots, including no fertilization(control), farmers' practice(FP, 60:45 kg ha^(-1) N:P_2O_5), recommended dose(RD, 120:90:60 kg ha^(-1) N:P_2O_5:K_2O), and integrated nutrient management(INM, 20 t ha^(-1) farmyard manure integrated with 50% N, 100% P, and K of recommended dose), using a split-plot randomized complete block design. The performance of CL was superior than CC in plant height, leaf area index(LAI), cob length, grain yield, biological yield, and grain protein(8%, 26%, 8%, 5%, 10%, and 8% increases, respectively), while CLI confirmed significant improvement only in LAI(25%) over CC. Response to nutrient inputs from all sources was in the order of INM > RD > FP > control, and the maximum net economic return by INM(23% and 2.5 times higher than RD and FP, respectively) indicated severe deficiency of both macro-and micro-nutrients in the soil as well as degraded physical properties. Increases in soil organic matter, total N, total mineral N, available P and K, total porosity, and available water-holding capacity by 6%, 34%, 24%, 50%, 13%, 5%, and 7%, respectively, and decrease in soil bulk density by 4% after four crop seasons indicated optimistic changes in soil quality as a result of the combined effects of fertilization from organic and inorganic sources and legumes within crop rotation. This study suggests that keeping the soil covered under cereal-legume rotation crops all year round and treatment with INM(50% N from organic source and 50% from inorganic source) are the best management practice for sustained produc

关键词： crop rotation crop performance degraded soil farmyard manure integrated nutrient management legume intercrop sustained production

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：