Pub Date : 2023-04-01DOI: 10.21475/ajcs.23.17.04.p3700
Charles Barbosa Santos, Kátia Aparecida de Pinho Costa, Wender Ferreira de Souza, Victor Costa e Silva, Eduardo Valcácer Brandstetter, Suelen Soares Oliveira, Karen Martins Leão, Eduardo da Costa Severiano
To improve the conditions of livestock areas, integrated crop-livestock systems have proven to be a viable and sustainable alternative for pasture recovery. The objective of this study was to evaluate the production, quality of Paiaguas palisadegrass and cattle performance after intercropping with sorghum in the pasture recovery through an integrated crop-livestock system. The experiment was conducted in an experimental design in a randomized block design with four replicates in a 4 x 4 factorial scheme, with four forage systems: Paiaguas palisadegrass in monocropped, sorghum intercropped with Paiaguas palisadegrass in rows, sorghum intercropped with Paiaguas palisadegrass in interrow, and sorghum intercropped with oversown Paiaguas palisadegrass, evaluated in four seasons of the year (winter, spring, summer, and fall).The forage system did not influence the DM production, nutritive value, stocking rate and weight gain, being that all forms of sowing can be indicated due to the good development of Paiaguas palisadegrass after the sorghum harvest, showing several alternatives for implantation of the crops in intercropping. The summer and fall seasons provided higher forage availability and nutritive value, resulting in greater weight gain and better performance per animal per area. Paiaguas palisadegrass has good potential in pasture formation, recovery, and/or renewal, showing resistance to the dry period of the year (winter and fall).
{"title":"Production, quality of Paiaguas palisadegrass and cattle performance after sorghum intercropping in pasture recovery in an integrated crop-livestock system","authors":"Charles Barbosa Santos, Kátia Aparecida de Pinho Costa, Wender Ferreira de Souza, Victor Costa e Silva, Eduardo Valcácer Brandstetter, Suelen Soares Oliveira, Karen Martins Leão, Eduardo da Costa Severiano","doi":"10.21475/ajcs.23.17.04.p3700","DOIUrl":"https://doi.org/10.21475/ajcs.23.17.04.p3700","url":null,"abstract":"To improve the conditions of livestock areas, integrated crop-livestock systems have proven to be a viable and sustainable alternative for pasture recovery. The objective of this study was to evaluate the production, quality of Paiaguas palisadegrass and cattle performance after intercropping with sorghum in the pasture recovery through an integrated crop-livestock system. The experiment was conducted in an experimental design in a randomized block design with four replicates in a 4 x 4 factorial scheme, with four forage systems: Paiaguas palisadegrass in monocropped, sorghum intercropped with Paiaguas palisadegrass in rows, sorghum intercropped with Paiaguas palisadegrass in interrow, and sorghum intercropped with oversown Paiaguas palisadegrass, evaluated in four seasons of the year (winter, spring, summer, and fall).The forage system did not influence the DM production, nutritive value, stocking rate and weight gain, being that all forms of sowing can be indicated due to the good development of Paiaguas palisadegrass after the sorghum harvest, showing several alternatives for implantation of the crops in intercropping. The summer and fall seasons provided higher forage availability and nutritive value, resulting in greater weight gain and better performance per animal per area. Paiaguas palisadegrass has good potential in pasture formation, recovery, and/or renewal, showing resistance to the dry period of the year (winter and fall).","PeriodicalId":8581,"journal":{"name":"Australian Journal of Crop Science","volume":"49 4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135771364","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-04-01DOI: 10.21475/ajcs.23.17.04.p3693
Darika Bunphan, Ruchuon Wanna, Goiseone Malambane
The world need for healthy cooking oil has readjusted research into other non-conventional oil crops like sesame. The importance of sesame is not only because of its healthy oil crop but also because of its short life cycle making it an attractive cash crop. The crop has been reported to be moderately sensitive to saline-soil and drought. Previous reports on the salinity tolerance were conducted on artificial saline soils with considering fertility thus it is important to evaluate the crops performance on naturally low fertility saline soils. Therefore, the objective of this study was to investigate the effect of saline-soil on growth, development and yield and yield related traits of black seed sesame. The pot experiment was conducted at Buri Ram province Thailand, in a 2 × 6 factorial in RCBD with three replications, where factor A was the soil salinity levels and factor B was the sesame cultivars. Sesame seeds were planted in a seedbed and later were transplanted into the 72 experimental pots each filled with 9 kg soil. Observed results showed that salinity levels had effect on sesame i.e. plant height, number of branches at 30 DAT, SCMR, total chlorophyll content, number of capsules, total dry weight and capsules dry weight. An interaction between salinity level and cultivar was also investigated i.e. number of branches and capsules, total and capsules dry weight and harvest index (HI). Salinity levels had influence on sesame both on growth and yield parameters; cv. Kanchanaburi and KKU2 showed higher number of capsules when compared with other cultivars grown under saline soil, whereas cv. Kanchanburi, UB3 and Buriram gave higher capsules dry weight under saline-soil.
{"title":"Performances of black seed sesame (Sesamum indicum L.) under low fertility saline soils","authors":"Darika Bunphan, Ruchuon Wanna, Goiseone Malambane","doi":"10.21475/ajcs.23.17.04.p3693","DOIUrl":"https://doi.org/10.21475/ajcs.23.17.04.p3693","url":null,"abstract":"The world need for healthy cooking oil has readjusted research into other non-conventional oil crops like sesame. The importance of sesame is not only because of its healthy oil crop but also because of its short life cycle making it an attractive cash crop. The crop has been reported to be moderately sensitive to saline-soil and drought. Previous reports on the salinity tolerance were conducted on artificial saline soils with considering fertility thus it is important to evaluate the crops performance on naturally low fertility saline soils. Therefore, the objective of this study was to investigate the effect of saline-soil on growth, development and yield and yield related traits of black seed sesame. The pot experiment was conducted at Buri Ram province Thailand, in a 2 × 6 factorial in RCBD with three replications, where factor A was the soil salinity levels and factor B was the sesame cultivars. Sesame seeds were planted in a seedbed and later were transplanted into the 72 experimental pots each filled with 9 kg soil. Observed results showed that salinity levels had effect on sesame i.e. plant height, number of branches at 30 DAT, SCMR, total chlorophyll content, number of capsules, total dry weight and capsules dry weight. An interaction between salinity level and cultivar was also investigated i.e. number of branches and capsules, total and capsules dry weight and harvest index (HI). Salinity levels had influence on sesame both on growth and yield parameters; cv. Kanchanaburi and KKU2 showed higher number of capsules when compared with other cultivars grown under saline soil, whereas cv. Kanchanburi, UB3 and Buriram gave higher capsules dry weight under saline-soil.","PeriodicalId":8581,"journal":{"name":"Australian Journal of Crop Science","volume":"244 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135771367","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-04-01DOI: 10.21475/ajcs.23.17.04.p3725
Amorésio Souza Silva Filho, Edna Maria Bonfim- Silva, André Pereira Freire Ferraz, Bency G Simeon, Tonny José Araújo da Silva, Thiago Franco Duarte
The use of wood ash as a fertilizer is a practice that helps in the management of soil fertility. Our objective was to evaluate the potential use of wood ash on structural and productive characteristics of paiaguás grass (Urochloa brizantha) pasture. The experiment was carried out at the Federal University of Rondonópolis, Brazilian Cerrado. Treatments were five wood ash doses: 0, 8, 16, 24, and 32 t ha-1 and two application strategies (wood ash incorporated into the soil and wood ash not-incorporated). Wood ash doses significantly affected (p<0.05) the evaluated response variables. Forage yield ranged from (mean ± standard error) 6.98±0.34 to 8.99±0.53 t DM ha-1. The highest productivity (11.10±0.46 t DM ha-1) was obtained at a wood ash rate of 24 t ha-1. The leaf area index was also higher (9.39±1.02) in the 24 t ha-1 wood ash dose. On the other hand, the leaf/stem ratio decreased with the application rate of wood ash and varied from 1.41±0.05 to 1.09±0.07 in the absence of wood ash (dose 0) and at the highest dose, respectively. In general, wood ash positively influenced (p<0.05) the structural characteristics and yield of U. brizantha cv. Paiaguás. Wood ash doses that provided the highest crop yield were between 16 and 24 t ha-1. The incorporation of wood ash into the soil increased pasture regrowth time. Therefore, it is recommended to apply wood ash superficially in established pastures.
使用木灰作为肥料是一种有助于管理土壤肥力的做法。我们的目的是评估木灰对paiaguás草(Urochloa brizantha)牧场结构和生产特性的潜在利用。这项实验是在巴西塞拉多的Rondonópolis联邦大学进行的。处理为5种木灰剂量:0、8、16、24和32 t hm -1，以及两种施用策略(木灰掺入土壤和不掺入土壤)。木灰剂量显著影响(p<0.05)评价的响应变量。饲料产量变化范围为(平均±标准误差)6.98±0.34 ~ 8.99±0.53 t DM hm -1。当木材灰分添加量为24 t hm -1时，产量最高(11.10±0.46 t DM hm -1)。24 t ha-1木灰处理的叶面积指数也较高(9.39±1.02)。另一方面，叶茎比随木灰施用量的增加而降低，在无木灰(剂量0)和最高剂量下分别为1.41±0.05 ~ 1.09±0.07。总体而言，木灰对棘花的结构特性和产量有正向影响(p<0.05)。Paiaguas。木灰用量在16 ~ 24吨公顷/公顷之间时，作物产量最高。在土壤中掺入木灰增加了牧草的再生时间。因此，建议在已建立的牧场表面施用木灰。
{"title":"Productive characteristics and structure of Paiaguás grass pasture fertilized with wood ash in the Brazilian Cerrado","authors":"Amorésio Souza Silva Filho, Edna Maria Bonfim- Silva, André Pereira Freire Ferraz, Bency G Simeon, Tonny José Araújo da Silva, Thiago Franco Duarte","doi":"10.21475/ajcs.23.17.04.p3725","DOIUrl":"https://doi.org/10.21475/ajcs.23.17.04.p3725","url":null,"abstract":"The use of wood ash as a fertilizer is a practice that helps in the management of soil fertility. Our objective was to evaluate the potential use of wood ash on structural and productive characteristics of paiaguás grass (Urochloa brizantha) pasture. The experiment was carried out at the Federal University of Rondonópolis, Brazilian Cerrado. Treatments were five wood ash doses: 0, 8, 16, 24, and 32 t ha-1 and two application strategies (wood ash incorporated into the soil and wood ash not-incorporated). Wood ash doses significantly affected (p<0.05) the evaluated response variables. Forage yield ranged from (mean ± standard error) 6.98±0.34 to 8.99±0.53 t DM ha-1. The highest productivity (11.10±0.46 t DM ha-1) was obtained at a wood ash rate of 24 t ha-1. The leaf area index was also higher (9.39±1.02) in the 24 t ha-1 wood ash dose. On the other hand, the leaf/stem ratio decreased with the application rate of wood ash and varied from 1.41±0.05 to 1.09±0.07 in the absence of wood ash (dose 0) and at the highest dose, respectively. In general, wood ash positively influenced (p<0.05) the structural characteristics and yield of U. brizantha cv. Paiaguás. Wood ash doses that provided the highest crop yield were between 16 and 24 t ha-1. The incorporation of wood ash into the soil increased pasture regrowth time. Therefore, it is recommended to apply wood ash superficially in established pastures.","PeriodicalId":8581,"journal":{"name":"Australian Journal of Crop Science","volume":"7 1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135771362","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-04-01DOI: 10.21475/ajcs.23.17.04.p3679
Wander Luis Barbosa Borges, Rogério Soares de Freitas, Giane Serafim da Silva, Marcela Aparecida de Moraes Silvestre, Mario Luiz Teixeira de Moraes
Quantifying the wood volume of forest stands is essential for planning sustainable forest management. The most efficient means of quantifying wood volume is volumetric equations. Many models for adjusting volumetric equations have been developed and tested, but their suitability for agrosilvipastoral systems remains unclear. To address this gap, we assessed the ability of six volumetric models to generate estimates of the total volume with bark of eucalyptus hybrids Grancam 1277 and Urograndis H-13. The trees were cultivated in an agrosilvipastoral system in an Arenic Hapludult in the municipality of Votuporanga, São Paulo State, Brazil, which is within the Cerrado biome. For Urograndis H-13, the Takata model was most accurate for quantifying volume, as it gave the highest F test (178.38) and adjusted coefficient of determination (0.93) values and the smallest standard error (0.06). The nonlinear and linear Schumacher-Hall models were most accurate for Grancam 1277, as this model gave the highest F test (54.59) and adjusted coefficient of determination (0.8) values and the smallest standard error (0.07).
{"title":"Volumetric models for quantifying the wood volume of two eucalyptus hybrids in an agrosilvipastoral system","authors":"Wander Luis Barbosa Borges, Rogério Soares de Freitas, Giane Serafim da Silva, Marcela Aparecida de Moraes Silvestre, Mario Luiz Teixeira de Moraes","doi":"10.21475/ajcs.23.17.04.p3679","DOIUrl":"https://doi.org/10.21475/ajcs.23.17.04.p3679","url":null,"abstract":"Quantifying the wood volume of forest stands is essential for planning sustainable forest management. The most efficient means of quantifying wood volume is volumetric equations. Many models for adjusting volumetric equations have been developed and tested, but their suitability for agrosilvipastoral systems remains unclear. To address this gap, we assessed the ability of six volumetric models to generate estimates of the total volume with bark of eucalyptus hybrids Grancam 1277 and Urograndis H-13. The trees were cultivated in an agrosilvipastoral system in an Arenic Hapludult in the municipality of Votuporanga, São Paulo State, Brazil, which is within the Cerrado biome. For Urograndis H-13, the Takata model was most accurate for quantifying volume, as it gave the highest F test (178.38) and adjusted coefficient of determination (0.93) values and the smallest standard error (0.06). The nonlinear and linear Schumacher-Hall models were most accurate for Grancam 1277, as this model gave the highest F test (54.59) and adjusted coefficient of determination (0.8) values and the smallest standard error (0.07).","PeriodicalId":8581,"journal":{"name":"Australian Journal of Crop Science","volume":"479 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135771365","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-04-01DOI: 10.21475/ajcs.23.17.04.p3841
Lucas da Rocha Ferreira, Leandro Paiola Albrecht, Alfredo Junior Paiola Albrecht, André Felipe Moreira Silva, Bruno Antônio Azevedo Silva, Enoir Cristiano Pellizaro
Given the potential of Azospirillum brasilense as an alternative to improve availability and use of N by maize, it is critical to conduct research in different regions to assess the results of inoculation under several different conditions. The study aimed to analyse the influence of Azospirillum brasilense on the growth and maize yield, as well as its interaction with nitrogen (N) fertilization. The experiment was conducted in two trials (Palotina, PR – trial 1; Ariquemes, RO – trial 2) in Brazil. The experimental design was randomized blocks in a factorial 2x4 arrangement. First factor was application of N fertilization (with or without application), while the second factor consisted of A. brasilense inoculation such as: no inoculation (control), via seed treatment (ST), via leaf application (LA) and ST + LA. The N contents of leaf and the agronomic performance were assessed. Analysis of variance was conducted with the F test (p<0.01). The mean levels of the inoculation factor with A. brasilense were compared via Tukey’s test (p<0.01). The F-test was conclusive in comparing the means of the levels of N application factor. The analysis was conducted by means of orthogonal contrasts to compare the treatment of A. brasilense with those treated with N fertilization. In trial 1, the applying N fertilization associated to A. brasilense via ST and LA may contribute to increase yield. In trial 2, inoculation with A. brasilense seems to be a technology with good prospects for application, contributing to improve production conditions and increase maize yield. Inoculation with A. brasilense is important to supply N to plants, with an increase in agronomic performance of maize. However, inoculation with A. brasilense was not sufficient to meet the demand for N fertilization
{"title":"Agronomic performance of maize under nitrogen fertilization and inoculation with Azospirillum brasilense","authors":"Lucas da Rocha Ferreira, Leandro Paiola Albrecht, Alfredo Junior Paiola Albrecht, André Felipe Moreira Silva, Bruno Antônio Azevedo Silva, Enoir Cristiano Pellizaro","doi":"10.21475/ajcs.23.17.04.p3841","DOIUrl":"https://doi.org/10.21475/ajcs.23.17.04.p3841","url":null,"abstract":"Given the potential of Azospirillum brasilense as an alternative to improve availability and use of N by maize, it is critical to conduct research in different regions to assess the results of inoculation under several different conditions. The study aimed to analyse the influence of Azospirillum brasilense on the growth and maize yield, as well as its interaction with nitrogen (N) fertilization. The experiment was conducted in two trials (Palotina, PR – trial 1; Ariquemes, RO – trial 2) in Brazil. The experimental design was randomized blocks in a factorial 2x4 arrangement. First factor was application of N fertilization (with or without application), while the second factor consisted of A. brasilense inoculation such as: no inoculation (control), via seed treatment (ST), via leaf application (LA) and ST + LA. The N contents of leaf and the agronomic performance were assessed. Analysis of variance was conducted with the F test (p<0.01). The mean levels of the inoculation factor with A. brasilense were compared via Tukey’s test (p<0.01). The F-test was conclusive in comparing the means of the levels of N application factor. The analysis was conducted by means of orthogonal contrasts to compare the treatment of A. brasilense with those treated with N fertilization. In trial 1, the applying N fertilization associated to A. brasilense via ST and LA may contribute to increase yield. In trial 2, inoculation with A. brasilense seems to be a technology with good prospects for application, contributing to improve production conditions and increase maize yield. Inoculation with A. brasilense is important to supply N to plants, with an increase in agronomic performance of maize. However, inoculation with A. brasilense was not sufficient to meet the demand for N fertilization","PeriodicalId":8581,"journal":{"name":"Australian Journal of Crop Science","volume":"331 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135771366","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-03-03DOI: 10.21475/ajcs.23.17.03.p3804
Alexandre Anders Brasil, Humberto Angelo, Rafael de Azevedo Calderon, Alexandre Nascimento de Almeida, Maristela Franchetti de Paula
The objective of this study is to identify the determinants of Non-Timber Forest Products (NTFPs’) supply and demand in the Amazon region. The method applied was an econometric model of supply and demand in a log-linear form. Based on consumer and firm theories as well as studies on the market for extractive products, we developed models of supply and demand for NTFPs. The models were estimated by Ordinary Least Squares (OLS) in the log-log functional form, allowing to obtain the elasticities of the variables that affect the NTFPs supply and demand. The results indicated that during the study period, the behavior of the NTFPs market was stable in terms of the price and the quantities produced. These products displayed low elasticity in relation to price, both on the supply and the demand sides. This indicates that the cultivation of NTFPs (producing species) is a better option than the expansion of extractive activity. We conclude that the modernization of extractive production, the development of the products, and government support for commercialization are essential for the development of sector and the local community
{"title":"An econometric model for non-timber forest products in the Brazilian Amazon","authors":"Alexandre Anders Brasil, Humberto Angelo, Rafael de Azevedo Calderon, Alexandre Nascimento de Almeida, Maristela Franchetti de Paula","doi":"10.21475/ajcs.23.17.03.p3804","DOIUrl":"https://doi.org/10.21475/ajcs.23.17.03.p3804","url":null,"abstract":"The objective of this study is to identify the determinants of Non-Timber Forest Products (NTFPs’) supply and demand in the Amazon region. The method applied was an econometric model of supply and demand in a log-linear form. Based on consumer and firm theories as well as studies on the market for extractive products, we developed models of supply and demand for NTFPs. The models were estimated by Ordinary Least Squares (OLS) in the log-log functional form, allowing to obtain the elasticities of the variables that affect the NTFPs supply and demand. The results indicated that during the study period, the behavior of the NTFPs market was stable in terms of the price and the quantities produced. These products displayed low elasticity in relation to price, both on the supply and the demand sides. This indicates that the cultivation of NTFPs (producing species) is a better option than the expansion of extractive activity. We conclude that the modernization of extractive production, the development of the products, and government support for commercialization are essential for the development of sector and the local community","PeriodicalId":8581,"journal":{"name":"Australian Journal of Crop Science","volume":"2632 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-03-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135340135","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-07-01DOI: 10.21475/ajcs.22.16.07.p3603
R. Rodrigues, C. Costa, M. Teixeira, Bruno Eduardo Caxias Miranda, Izakiel Reis Marinho, Eduarda Castro da Silva, K. Costa, Yara Lima de Souza, D. M. Barros, Ivo Guilherme Ribeiro Araújo, A. D. Jesus, Michel Oliveira Rocha, Pedro Lucas Oliveira Rocha
This study aimed to evaluate sowing methods of different tropical grasses in integrated production systems on morphogenic and structural characteristics, chemical composition, and corn yield. The experiment was carried out in a completely randomized design, with a 3 x 3 + 1 factorial arrangement, with three forages: andropogon grass (Andropogon gayanus Kunth cv. Planaltina), massai grass (Megathyrsus maximum cv. Massai) and ruziziensis grass (Urochloa ruziziensis), three ways of sowing intercropped with corn (one row, two rows and broadcast) with four replications and corn in monoculture. Soil preparation, corrective practices and monitoring were carried out as recommended by the species. The results revealed that the sowing methods did not interfere with the interaction for morphogenic and structural characteristics of the grasses. Leaf elongation rate (LER) did not differ among grasses and sowing forms for Andropogon, Massai, and Ruziziensis grasses. There was an interaction effect (P<0.05) for leaf production (LP); the massai grass exhibited higher production compared to other grasses. The spread sowing method produced less leaf availability for the massai grass. There was no effect (P>0.05) of interaction for the variables of the chemical composition of grasses. Maize production was not altered due to the different consortia; however, a much lower value was found when producing corn in monoculture. The average production of intercropped corn was 3420 kg and ha-1, against 1680 kg of single cultivated corn. Massai grass and Ruziziensis grass is an attractive alternative for intercropping with corn in integrated systems
{"title":"Productive characteristics and economic analysis of tropical forage grasses cultivated under different sowing methods in intercropping production systems","authors":"R. Rodrigues, C. Costa, M. Teixeira, Bruno Eduardo Caxias Miranda, Izakiel Reis Marinho, Eduarda Castro da Silva, K. Costa, Yara Lima de Souza, D. M. Barros, Ivo Guilherme Ribeiro Araújo, A. D. Jesus, Michel Oliveira Rocha, Pedro Lucas Oliveira Rocha","doi":"10.21475/ajcs.22.16.07.p3603","DOIUrl":"https://doi.org/10.21475/ajcs.22.16.07.p3603","url":null,"abstract":"This study aimed to evaluate sowing methods of different tropical grasses in integrated production systems on morphogenic and structural characteristics, chemical composition, and corn yield. The experiment was carried out in a completely randomized design, with a 3 x 3 + 1 factorial arrangement, with three forages: andropogon grass (Andropogon gayanus Kunth cv. Planaltina), massai grass (Megathyrsus maximum cv. Massai) and ruziziensis grass (Urochloa ruziziensis), three ways of sowing intercropped with corn (one row, two rows and broadcast) with four replications and corn in monoculture. Soil preparation, corrective practices and monitoring were carried out as recommended by the species. The results revealed that the sowing methods did not interfere with the interaction for morphogenic and structural characteristics of the grasses. Leaf elongation rate (LER) did not differ among grasses and sowing forms for Andropogon, Massai, and Ruziziensis grasses. There was an interaction effect (P<0.05) for leaf production (LP); the massai grass exhibited higher production compared to other grasses. The spread sowing method produced less leaf availability for the massai grass. There was no effect (P>0.05) of interaction for the variables of the chemical composition of grasses. Maize production was not altered due to the different consortia; however, a much lower value was found when producing corn in monoculture. The average production of intercropped corn was 3420 kg and ha-1, against 1680 kg of single cultivated corn. Massai grass and Ruziziensis grass is an attractive alternative for intercropping with corn in integrated systems","PeriodicalId":8581,"journal":{"name":"Australian Journal of Crop Science","volume":"28 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84220881","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-07-01DOI: 10.21475/ajcs.22.16.07.p3597
Guilherme Alexandre Pacheco Gut, J. E. Neto, Rodrigo da Silva Santos, Roseli Freire Melo, D. M. Nogueira, G. S. Difante, A. Gurgel, Ítalo Luís Oliveira Santana
The stud article aimed to assess the accumulation and rates of nutrients in the biomass of the consortium of millet and leguminous plants for green fertilisation. The treatments were consortia of millet with four different leguminous plants: Cajanus cajan, Canavalia ensiformis, Mucuna aterrima, and Dolichos lablab. The treatments were distributed in a completely randomised design with four replications. The species of each consortium were planted in a line, at a distance of one metre apart. The aerial part of the plants was harvested after 90 days to determine the botanical composition, intercropping biomass, and the amount and accumulation of macronutrients in the biomass. The Millet mass did not differ among the consortia. However, among the legumes, M. aterrima has the highest mass (2806.31 kg/ha DM), which is reflected in the lower ratio of leguminous grasses in the millet consortium with M. aterrima (4.61). The consortia affected the rate and accumulation of P, B, and Fe. The biomass of the millet consortium with C. cajan presented the lowest rate. In addition, the accumulation of K, Mg, and Zn was low in this consortium. The biomass of millet intercrops with M. aterrima, D. lablab and C. ensiformis showed higher accumulations of K, Ca, and Mg. The highest accumulation of N was observed in the biomass of the consortium with M. aterrima (50.71 kg/ha). The rates and accumulations of Cu and Zn were higher in the consortium with M. aterrima. The consortium of millet with the leguminous plants is a sustainable alternative for fertilisation. The consortia with M. aterrima and D. lablab are the most promising ones, due to the higher proportion of plants.
{"title":"Intercrops of grass with legumes as green manure for agroecological systems","authors":"Guilherme Alexandre Pacheco Gut, J. E. Neto, Rodrigo da Silva Santos, Roseli Freire Melo, D. M. Nogueira, G. S. Difante, A. Gurgel, Ítalo Luís Oliveira Santana","doi":"10.21475/ajcs.22.16.07.p3597","DOIUrl":"https://doi.org/10.21475/ajcs.22.16.07.p3597","url":null,"abstract":"The stud article aimed to assess the accumulation and rates of nutrients in the biomass of the consortium of millet and leguminous plants for green fertilisation. The treatments were consortia of millet with four different leguminous plants: Cajanus cajan, Canavalia ensiformis, Mucuna aterrima, and Dolichos lablab. The treatments were distributed in a completely randomised design with four replications. The species of each consortium were planted in a line, at a distance of one metre apart. The aerial part of the plants was harvested after 90 days to determine the botanical composition, intercropping biomass, and the amount and accumulation of macronutrients in the biomass. The Millet mass did not differ among the consortia. However, among the legumes, M. aterrima has the highest mass (2806.31 kg/ha DM), which is reflected in the lower ratio of leguminous grasses in the millet consortium with M. aterrima (4.61). The consortia affected the rate and accumulation of P, B, and Fe. The biomass of the millet consortium with C. cajan presented the lowest rate. In addition, the accumulation of K, Mg, and Zn was low in this consortium. The biomass of millet intercrops with M. aterrima, D. lablab and C. ensiformis showed higher accumulations of K, Ca, and Mg. The highest accumulation of N was observed in the biomass of the consortium with M. aterrima (50.71 kg/ha). The rates and accumulations of Cu and Zn were higher in the consortium with M. aterrima. The consortium of millet with the leguminous plants is a sustainable alternative for fertilisation. The consortia with M. aterrima and D. lablab are the most promising ones, due to the higher proportion of plants.","PeriodicalId":8581,"journal":{"name":"Australian Journal of Crop Science","volume":"26 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87135129","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-07-01DOI: 10.21475/ajcs.22.16.07.p3639
I. Rachman, Indrianto Kadeko, Andi sahri Alam, A. Malik, Effendy Effendy
The community forests are one of the main suppliers of wood needs in the future. They require careful attention to the wood type to be planted, preferably choosing plants that have a short cycle. The demand for wood for the community is increasing, while the supply of timber from state forests to the wood processing industry is decreasing. This research aimed to analyze the optimum age and maximum increment of community forest stands and which species were more profitable. This research was done in a community forest with tropical environmental type. This research was quantitative, calculating the maximum volume cycle and Mean Annual Increment (MAI) values in community forest stands. The results show that the maximum volume increment was found in jabon (Anthocepalus sp) stands, namely at the age of 8 years, with a total of 600 trees/ha, an average diameter of 30 cm, an average height of 13 m, a total volume of 330.64 m3/ha, and a mean annual increment (MAI) of 41.33 m3/ha/year. Jabon stands at the age of 8 years were suitable for harvest because they reached the maximum volume increment in the soil types of Hapludults Dystrudepts, Haplustepts Haplustalfs, and Endoaquepts Udifluvents
{"title":"Analysis of optimum age and maximum increment of forest stands for developing community forests","authors":"I. Rachman, Indrianto Kadeko, Andi sahri Alam, A. Malik, Effendy Effendy","doi":"10.21475/ajcs.22.16.07.p3639","DOIUrl":"https://doi.org/10.21475/ajcs.22.16.07.p3639","url":null,"abstract":"The community forests are one of the main suppliers of wood needs in the future. They require careful attention to the wood type to be planted, preferably choosing plants that have a short cycle. The demand for wood for the community is increasing, while the supply of timber from state forests to the wood processing industry is decreasing. This research aimed to analyze the optimum age and maximum increment of community forest stands and which species were more profitable. This research was done in a community forest with tropical environmental type. This research was quantitative, calculating the maximum volume cycle and Mean Annual Increment (MAI) values in community forest stands. The results show that the maximum volume increment was found in jabon (Anthocepalus sp) stands, namely at the age of 8 years, with a total of 600 trees/ha, an average diameter of 30 cm, an average height of 13 m, a total volume of 330.64 m3/ha, and a mean annual increment (MAI) of 41.33 m3/ha/year. Jabon stands at the age of 8 years were suitable for harvest because they reached the maximum volume increment in the soil types of Hapludults Dystrudepts, Haplustepts Haplustalfs, and Endoaquepts Udifluvents","PeriodicalId":8581,"journal":{"name":"Australian Journal of Crop Science","volume":"104 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84733951","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-07-01DOI: 10.21475/ajcs.22.16.07.p3642
Felipe Gomes Claudino, Natalia Caroline Anastacio Souza, Felipe Górski, J. Gonçalves, Z. C. Gazim, H. M. Magalhães
The species Ocimum basilicum has many cultivars with different chemotypes. The basil cultivar ‘Albahaca Dante’ has great economic potential. Nevertheless, there is little data about the production of volatiles and the growth using elicitors. This study aims to evaluate growth, physiological disorders, enzymatic activity, biochemistry, stomatal analysis, and the volatile compounds of Ocimum basilicum L.' Albahaca Dante' cultivated in vitro under different concentrations of zinc sulfate (ZnSO4) and methyl jasmonate (MeJa). The experiment was conducted in a completely randomized design (CRD). Five treatments were evaluated based on the combination of MeJa x Zinc Sulfate, using a Murashige and Skoog medium. The results demonstrate that MeJa reduced the formation of abnormal seedlings. Nevertheless, the growth and the number of leaves were not incremented compared in half without elicitors. The number of volatile compounds was lower in the treatment without elicitors and with 25µM ZnSO4 + 1µMMeja. Methyl chavicol was the main compound in both treatments. In this case, the seedlings had smaller stomata with higher density. The seedlings that were developed under unfavorable conditions (75µM ZnSO4 + 1µM MeJa and 75µM ZnSO4 + 5µM MeJa) produced compounds such as Eugenol, Linalool, Methyleugenol, α-Bergamotene, and showed a reduction in the stomatal density, but larger size. The elicitors influenced the activity of antioxidant enzymes, except for 75µM ZnSO4 + 1µM MeJa, which occasioned an acute decrease of all enzymes. The elicitors altered the volatile composition of this basil cultivar and its biochemical responses
{"title":"Zinc and methyl jasmonate modulate the growth and the volatile compounds of the 'Albahaca Dante' basil cultivated in vitro","authors":"Felipe Gomes Claudino, Natalia Caroline Anastacio Souza, Felipe Górski, J. Gonçalves, Z. C. Gazim, H. M. Magalhães","doi":"10.21475/ajcs.22.16.07.p3642","DOIUrl":"https://doi.org/10.21475/ajcs.22.16.07.p3642","url":null,"abstract":"The species Ocimum basilicum has many cultivars with different chemotypes. The basil cultivar ‘Albahaca Dante’ has great economic potential. Nevertheless, there is little data about the production of volatiles and the growth using elicitors. This study aims to evaluate growth, physiological disorders, enzymatic activity, biochemistry, stomatal analysis, and the volatile compounds of Ocimum basilicum L.' Albahaca Dante' cultivated in vitro under different concentrations of zinc sulfate (ZnSO4) and methyl jasmonate (MeJa). The experiment was conducted in a completely randomized design (CRD). Five treatments were evaluated based on the combination of MeJa x Zinc Sulfate, using a Murashige and Skoog medium. The results demonstrate that MeJa reduced the formation of abnormal seedlings. Nevertheless, the growth and the number of leaves were not incremented compared in half without elicitors. The number of volatile compounds was lower in the treatment without elicitors and with 25µM ZnSO4 + 1µMMeja. Methyl chavicol was the main compound in both treatments. In this case, the seedlings had smaller stomata with higher density. The seedlings that were developed under unfavorable conditions (75µM ZnSO4 + 1µM MeJa and 75µM ZnSO4 + 5µM MeJa) produced compounds such as Eugenol, Linalool, Methyleugenol, α-Bergamotene, and showed a reduction in the stomatal density, but larger size. The elicitors influenced the activity of antioxidant enzymes, except for 75µM ZnSO4 + 1µM MeJa, which occasioned an acute decrease of all enzymes. The elicitors altered the volatile composition of this basil cultivar and its biochemical responses","PeriodicalId":8581,"journal":{"name":"Australian Journal of Crop Science","volume":"26 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81598847","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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