Produção de rabanete sob o efeito residual da adubação verde no consórcio de beterraba e rúcula

Sistemas de cultivo com incorporação de adubos verdes podem preservar a capacidade produtiva do solo em longo prazo, oferecendo resíduos que proporcionarão melhorias nas condições físicas, química e biológica do solo tornando-o propício para a implantação de uma cultura sucedente. Diante disso, o trabalho teve como objetivo avaliar produção de rabanete sob o efeito residual da adubação verde no consórcio de beterraba e rúcula. O delineamento experimental usado foi em blocos casualizados com cinco repetições. Os tratamentos utilizados foram o efeito residual de quatro quantidades de flor-de-seda incorporadas ao solo (10, 25, 40 e 55 t ha-¹ em base seca). As características avaliadas na cultura do rabanete foram: altura e diâmetro de plantas, número de folhas, produtividade total e comercial de raízes, massa seca da parte aérea e de raízes. O efeito residual da incorporação de flor-de-seda ao solo na quantidade de 55 t ha-¹ proporcionou a maior produtividade de raízes comerciais de rabanete, e assim podemos afirmar que a adubação verde com flor-de-seda apresenta-se como uma prática promissora para o produtor de hortaliças em cultivo sucessivo.Radish production under the residual effect of green manure in the consortium beet and arugulaAbstract: Cropping systems in with incorporation of green manures can preserve the productive capacity of the soil over time providing waste to the soil improvement in the conditions physical, chemical and biological, making it suitable for the implementation of a succeeding crop. Therefore the aim of this study was to evaluate the radish production under the residual effect of green manure in the consortium beet and arugula. The experimental design was a randomized complete block design with five replications. The treatments were the residual effect of four amounts of fleur-de-silk incorporated into the soil (10, 25, 40 and 55 t ha-¹ dry basis). The characteristics evaluated in the radish production were: plant height, diameter, total and commercial yield of roots, dry weight of shoots and roots. The residual effect of the fleur-de-silk incorporation into the soil in the amount of 55 t ha-¹ provided the highest yield of commercial radish roots. The green manure with fleur-de-silk was presented as a promising practice for the producer of vegetables in succeeding crop.

Download Full-text

Comparative Effect of Groundnut (Arachis hypogea l.) Genotypes on Yield and N Fixation in Sudan and Northern Guinea Savannahs of Nigeria

10.36265/njss.2019.290208 ◽

2019 ◽

pp. 61-67

Keyword(s):

Agricultural Research ◽

Cropping Systems ◽

Block Design ◽

Dry Weight ◽

Field Trials ◽

Yield Potential ◽

N Fixation ◽

Maize Crop ◽

Significant Interaction Effect ◽

Pod Yield

Recognition of high yielding and nitrogen (N) fixing groundnut genotypes and desegregating them in the cereal-based cropping systems common in savannah regions will enhance food security and reduce the need for high N fertilizers hence, minimize the high cost and associated environmental consequences. Field trials were conducted during the 2015 growing season at the Research Farms of Bayero University Kano (BUK) and Institute for Agricultural Research (IAR), Ahmadu Bello University, Samaru-Zaria to assess the yield potential and Biolog- ical N fixation in 15 groundnut genotypes (ICG 4729, ICGV-IS 07823, ICGV-IS 07893, ICGV-IS 07908, ICGV- SM 07539, ICGV- SM 07599, ICGV-IS 09926, ICGV-IS 09932, ICGV-IS 09992, ICGV-IS 09994, SAMNUT-21, SAMNUT-22, SAMNUT-25, KAMPALA and KWANKWAS). The groundnut genotypes and reference Maize crop (SAMMAZ 29) were planted in a randomized complete block design in three replications. N difference method was used to estimate the amount of N fixed. The parameters determined were the number of nodules, nod- ule dry weight, shoot and root dry weights, pod, and haulm yield as well as N fixation. The nodule dry weight, BNF, haulm, and pod yield were statistically significant (P<0.01) concerning genotype and location. Similarly, their interac- tion effect was also highly significant. ICGV-IS 09926 recorded the highest nod- ule dry weight of 2.07mg /plant across the locations while ICGV-IS 09932 had the highest BNF value of 140.27Kg/ha. Additionally, KAMPALA had the high- est haulm yield, while ICGV-IS 07893 had the highest pod yield across the loca- tions with a significant interaction effect. The result shows that ICGV-IS 07893 and ICGV-IS 09932, as well as ICGV-IS 09994 and SAMNUT – 22, were the best genotypes concerning BNF, haulm and pod yield in the Northern Guinea and Sudan Savannahs of Nigeria respectively with the potential for a corresponding beneficial effect.

Download Full-text

Plantain-Tree Rubber Intercropping Systems Improved Productivity in the Tropical Humid Zone of Ghana, West Africa

International Journal of Agronomy ◽

10.1155/2021/3240686 ◽

2021 ◽

Vol 2021 ◽

pp. 1-16

Author(s):

Erasmus Narteh Tetteh ◽

Eric Owusu Danquah ◽

Akwasi Adutwum Abunyewa ◽

Caleb Melenya Ocansey ◽

Emmanuel Amoah Boakye ◽

...

Keyword(s):

Population Density ◽

Growth And Development ◽

Positive Relationship ◽

Cropping Systems ◽

Block Design ◽

Rubber Tree ◽

Western Region ◽

Optimum Population ◽

Randomized Complete Block Design ◽

Sole Cropping

A three-year field trial was conducted between 2014 and 2017 in the Ellembelle and Jomoro districts of the Western region of Ghana where rubber production is common to determine the optimum population density of plantain when grown in combination with immature rubber tree crops. The trials were arranged in a Randomized Complete Block Design with 3 replications. The treatments were sole rubber, sole plantain, and three intercrops of one row of plantain in between two rows of rubber, two rows of plantain in between two rows of rubber, and three rows of plantain in between two rows of rubber. The rubber clone used was GT1 while the variety of plantain used was false horn. The results showed that population density of plantain had significant effect on the growth of the associated rubber. Growing plantain at closer spacing of 1.5 m under the high-density plantain treatment significantly increased plantain yield compared to the other cropping systems. There was a significant positive relationship between population density of plantain and the rubber tree growth and development. The optimum population density of plantain when intercropped with rubber was 1,666/ha. The study showed intercropping was advantageous over sole cropping for both crops.

Download Full-text

Residual Effect of Weed Management Practices Executed in Preceding Maize on Succeeding Greengram

Legume Research - An International Journal ◽

10.18805/lr-4477 ◽

2021 ◽

Author(s):

B. Sandhya Rani ◽

V. Chandrika ◽

G. Prabhakara Reddy ◽

P. Sudhakar ◽

K.V. Nagamadhuri ◽

...

Keyword(s):

Weed Management ◽

Management Practices ◽

Block Design ◽

Residual Effect ◽

Cropping System ◽

Dry Weight ◽

Microbial Count ◽

Yield Attributes ◽

Randomized Block Design ◽

Weed Infestation

Background: Maize followed by summer pulses is the emerging cropping system in many places in India. Herbicides are the efficient tools for checking weed infestation and their usage is increasing throughout the globe due to increased labour cost and quick weed control. Some herbicides do not degrade quickly and may remain in the soil for weeks, months or years after application and may inhibit the growth of succeeding crops. Methods: Field experiment was conducted in a randomized block design (RBD) during rabi and summer seasons of 2017-18 and 2018-19 to know the residual effect of different herbicides applied in maize on succeeding greengram. Result: The present study revealed that lower density and dry weight of total weeds and higher yield attributes and yield was recorded with the practice of adopting two hand weedings at 15 and 30 DAS, which was however, at par with atrazine 1.0 kg ha-1 as PE fb one HW at 30 DAS, atrazine 1.0 kg ha-1 as PE fb topramezone 30 g ha-1 as PoE and atrazine 1.0 kg ha-1 as PE fb tembotrione 120 g ha-1 as PoE, without any significant disparity among them. Herbicides applied in maize did not alter statistically the enzyme activity and microbial count in the soil at harvest of succeeding greeengram.

Download Full-text

Yield Performance of Fine Aromatic Rice in Response to Variety and Level of Nitrogen

Journal of Environmental Science and Natural Resources ◽

10.3329/jesnr.v9i1.30289 ◽

2016 ◽

Vol 9 (1) ◽

pp. 41-45 ◽

Cited By ~ 1

Author(s):

SA Chowdhury ◽

SK Paul ◽

MAR Sarkar

Keyword(s):

Natural Resources ◽

Grain Yield ◽

Block Design ◽

Aromatic Rice ◽

Yield Performance ◽

Field Laboratory ◽

Randomized Complete Block Design ◽

Promising Practice

An experiment was conducted at the Agronomy Field Laboratory, Bangladesh Agricultural University, Mymensingh during June to December 2014 with a view to finding out the effect of variety and level of nitrogen on the yield performance of fine aromatic rice. The experiment consisted of three varieties viz. Kalizira, Binadhan-13 and BRRI dhan34, and six levels of nitrogen viz. 0, 30, 60, 90 kg N ha-1, USG 1.8 g 4 hills-1 (55 kg N ha-1) and USG 2.7 g 4 hills-1 (80 kg N ha-1). The experiment was laid out in a randomized complete block design with three replications. Variety, level of nitrogen and their interaction significantly influenced the yield of aromatic rice. The highest grain yield (3.33 t ha-1) was obtained from Binadhan-13 followed by BRRI dhan34 (3.16 t ha-1) and the lowest grain yield was found in Kalizira (2.11 t ha-1). In case of N, the tallest plant (140.3 cm), highest number of effective tillers hill-1 (11.40), grains panicle-1 (152.8), and grain yield (3.32 t ha-1) were obtained when fertilized with USG 1.8 g 4 hills-1 and the lowest values were found in 0 kg N ha-1. Therefore, Binadhan-13 fertilized with USG 1.8 g 4 hills-1 (55 kg N ha-1) appeared as the promising practice for appreciable grain yield.J. Environ. Sci. & Natural Resources, 9(1): 41-45 2016

Download Full-text

Mulches for yacon cultivation

Horticultura Brasileira ◽

10.1590/s0102-053620180317 ◽

2018 ◽

Vol 36 (3) ◽

pp. 389-394

Author(s):

Fabio Luiz Oliveira ◽

Cristiano Henrique P Venturim ◽

Diego Mathias N Silva ◽

Mateus Augusto L Quaresma ◽

Leandro P Dalvi

Keyword(s):

Block Design ◽

Bare Soil ◽

Good Alternative ◽

Plastic Mulch ◽

Coffee Husk ◽

Corn Husk ◽

Randomized Complete Block Design ◽

Total Productivity ◽

Black Plastic ◽

Commercial Yield

ABSTRACT In Brazil, studies on commercial exploitation of yacon are still scarce. A growing interest in this vegetable has demanded some researches on this crop cultivation management, though. Considering that yacon has a long cycle, which exposes the soil, studies on mulch management will be of great value. We used a randomized complete block design, with five replicates, under different soil mulches for yacon cultivation: two plastic film covers (black and double-sided), four mulches (corn husk, coffee husk in three levels), and the control (bare soil). Plastic mulch can be used for yacon cultivation, considering that the double sided plastic provides greater production of total roots; however, the same yield of the most valued roots was obtained using black plastic. The second highest total productivity and the highest commercial yield in the most valued root classes were obtained using 50 L m-² of coffee husk as mulch, representing a good alternative for farmers.

Download Full-text

Biomass and Sugar Content of Some Varieties of Sorghum (Sorghum Bicolor L. Moench) on Dry Land Forest as Feedstock Bioethanol

MATEC Web of Conferences ◽

10.1051/matecconf/201816401035 ◽

2018 ◽

Vol 164 ◽

pp. 01035 ◽

Cited By ~ 1

Author(s):

Praptiningsih Gamawati Adinurani ◽

Sri Rahayu ◽

Luluk Sulistiyo Budi ◽

Anggi Nindita ◽

Peeyush Soni ◽

...

Keyword(s):

Biomass Production ◽

Block Design ◽

Sugar Content ◽

Sustainable Use ◽

Dry Weight ◽

Raw Material ◽

Dry Land ◽

Randomized Complete Block Design ◽

High Sugar Content ◽

Selection Of

The possibility of sustainable use of sorghum as raw material for bioethanol needs to be supported by evaluation and selection of sorghum varieties for high biomass production and sugar content. An experiment was conducted on forest dry land , altitude 63 m asl. This research aimed to determine the interaction of sorghum varieties and mycorrhiza on biomass production and the high sugar content. The experiment was a two factor (varieties and dosage of mycorrhiza plus) in a randomized complete block design with three replications. The varieties were Suri 3, Kawali, Super 2, Suri 4. Dosage of mycorrhiza plus (5, 10, 15) g per plant. The interaction only significant on a number of internodes and bagasse. There are no effects of dosages mycorrhiza plus, however, varieties of sorghum have significant effects on many variables measured. The highest amount of biomass include the stem height (301.28 cm), stem Dry Weight (DW) is 23.48 t ha-1, leaf DW (4.65 t ha-1), panicle DW (11.35 t ha-1) and biomass DW (39.98 t ha-1) were obtained in varieties Super 2. Sugar content (16.93 %) was obtained in varieties Suri 3 and juice production (2 742.86 L ha-1) in varieties Suri 4.

Download Full-text

A Preliminary Study on Reducing the Dosage of Chemical Fertiliser by using Empty Fruit Bunch as Soil Amendment on the Growth of Choy Sum

ASM Science Journal ◽

10.32802/asmscj.2020.456 ◽

2020 ◽

Vol 13 ◽

pp. 1-6

Author(s):

Jiunn Luh Tan ◽

Kok Yu Ang ◽

Min Hui Chow ◽

Eunice Ting Yee Lee ◽

Kuan Hoong Lee ◽

...

Keyword(s):

Crop Production ◽

Block Design ◽

Dry Weight ◽

Positive Control ◽

Empty Fruit Bunch ◽

Vegetable Farmers ◽

Growth Difference ◽

Randomized Complete Block Design ◽

The Cost ◽

Chemical Fertiliser

Palm oil production results in many valuable products, but it also generates agricultural wastes such as empty fruit bunch (EFB). EFB composting usually produces nutrient-enriched bio-fertilisers and thus, able to help in reducing the chemical fertilisers applied. Most conventional vegetable farmers in Malaysia solely depend on chemical fertilisers in crop production. However, the intensive use of chemical fertilisers has led to various side effects. Thus, this study was to determine the effect on the growth of choy sum by reducing the dosage of chemical fertiliser with EFB compost as soil amendments. Randomized Complete Block Design (RCBD) methods were used in this study. The fresh weight, dry weight and plant height of the choy sum were found to be not significantly different among all the treatments (T1 – T4) and positive control. This study found that T4 with 30% lesser chemical fertiliser applied showed no significant growth difference with the rest of the treatments indicating that EFB may have the ability to help in reducing chemical fertiliser usage in the growth of choy sum. Further study is recommended as this will help in better EFB waste management and lowering the cost of production for local vegetables.

Download Full-text

Yield performance of the cocoa clones of Sca 6 and DRC 15 resistant to vascular-streak dieback

Pelita Perkebunan (a Coffee and Cocoa Research Journal) ◽

10.22302/iccri.jur.pelitaperkebunan.v25i2.131 ◽

2009 ◽

Vol 25 (2) ◽

Author(s):

Agung Wahyu Susilo ◽

Surip Mawardi ◽

Sudarsianto Sudarsianto

Keyword(s):

Block Design ◽

Dry Weight ◽

Quality Standard ◽

Fat Content ◽

Yield Potential ◽

Yield Performance ◽

Stability Performance ◽

Randomized Complete Block Design ◽

Good Potential ◽

Theobroma Cacao L

Selection on cocoa resistance to vascular-streak dieback (VSD) has identified some resistant clones for breeding purposes. Of the resistant clones, it was selected Sca 6 and DRC 15 which performing good potential for yield. This paper reports results on testing yield potential of the clones in separate trials. Sca 6 was tested in Kottablater Estate (dry climate in the altitude of ± 25 m asl.) and DRC 15 was tested in Mumbulsari Estate (dry climate in the altitude of ± 45 m asl.) both are in Jember. Trials were arranged in the randomized complete block design with 4 blocks. Evaluation for yield performance was conducted during 6 years of harvest and stability performance was analyzed in regression term using year of harvest as the index. The results indicate the yield potential of the clones was quite similar in the level of 1.4 kg/plant and performing stability during evaluation and good adaptability in the location. The yield potential was lower than the high yielding clones but use of Sca 6 and DRC 15 in heavily infasted VSD area should be considered than using of the susceptible clones. Sca 6 performed low potential on a dry-weight bean in the range of 0.65—0.86 g (class C of quality standard) but better performance could be found in the wet area. DRC 15 performed good potential on a dryweight bean of 1.16 g (class AA of quality standard). Fat content analysis of Sca 6 indicate a better performance of beans which grown up in the wet area (58.2%) than in the dry area (49.6%). It was reported the fat content potential of DRC 15 in the level of 50.4%. Key words: Yield performance, vascular-streak dieback, resistant clone, Theobroma cacao L.

Download Full-text

INFLUENCE OF COLD TREATMENT, CO2 LEVEL, AND TEMPERATURE ON VEGETABLE TRANSPLANT QUALITY

HortScience ◽

10.21273/hortsci.27.6.641f ◽

1992 ◽

Vol 27 (6) ◽

pp. 641f-641

Author(s):

Wenwei Jia ◽

L.A. Weston ◽

J. Buxton

Keyword(s):

Block Design ◽

Cold Treatment ◽

Dry Weight ◽

Temperature Treatment ◽

Growth Stages ◽

Flower Formation ◽

Tomato Seedlings ◽

Mature Flower ◽

Randomized Complete Block Design ◽

Temperature Levels

Tomato and pepper seedlings were grown in six controlled environmental chambers with three different temperature levels (high:24/16°C, medium:20/12°C, and low:16/8°C) and two CO2 levels (1500 ppm and ambient) after cotyledons had unfolded. After 4 weeks, seedlings were planted into 15 cm pots. After 4 weeks, another set were transplanted to the field on 5/13 and arranged with 4 replications in a randomized complete block design. Only temperature treatment had a significant influence on the number of flowers developed in greenhouse experiments. However, for field transplanted seedlings, CO2 enrichment had a significant effect on flower formation and increased total flower numbers and fruit numbers in the early growth stages in field. Temperature also influenced seedling height. In other experiments, cold treatments were given to tomato and pepper seedlings. Seedlings were treated with 13°C temperatures for 0, 1 or 2 weeks after cotyledons unfolded. Results indicate that tomato seedlings with either 1 or 2 weeks of cold treatment had greater dry weight and leaf numbers and larger and more mature flower buds than those given no cold treatment. Pepper seedlings receiving 2 weeks of cold treatment showed similar increases compared to those receiving 0 or 1 weeks of cold treatment. The earliest flower initials were observed microscopically when tomato had only one visible leaf and pepper had 8 or 9 visible leaves. These results indicate that cold treatments should be started as soon as the cotyledons have unfolded to hasten flower formation.

Download Full-text

Impact of paddy straw mulch on germination and growth of celery (Apium graveolens L.) seedlings and associated weeds in nursery

Journal of Spices and Aromatic Crops ◽

10.25081/josac.2020.v29.i2.6249 ◽

2020 ◽

pp. 148-152

Author(s):

A. S. Brar ◽

P. K. Sraw ◽

B. S. Dhillon

Keyword(s):

Retention Time ◽

Block Design ◽

Dry Weight ◽

Apium Graveolens ◽

Full Time ◽

Paddy Straw ◽

Straw Mulch ◽

Randomized Complete Block Design ◽

And Control ◽

Germination And Growth

A study was undertaken during three consecutive rabi seasons of 2014–15 to 2016–17 at the Research Farm, Department of Agronomy, Punjab Agricultural University, Ludhiana (Punjab) to determine the effect of paddy straw mulch load and retention time on the germination and growth of celery and associated weeds. The experiment was conducted in randomized complete block design (RCBD) with nine treatments viz., paddy straw mulch @ 4 and 6 t ha-1 with retention time of 15, 20, 25 days after sowing (DAS), full time retention (60 DAS), and control (without mulch). The results indicated that application of paddy straw mulch @ 4 or 6 t ha-1 significantly improved the germination of celery in nursery as compared to no mulch treatment but retention of paddy straw mulch beyond 20 days after sowing suppressed the celery seedlings adversely resulting in lowering seedling population as well as fresh and dry weight of celery seedlings. Application of paddy straw mulch @ 4 or 6 t ha-1 resulted in significantly lower density and dry weight of weeds as compared to control. Further, each successive increase in retention time of paddy straw mulch from 15 DAS to full time retention (60 DAS) through 20 and 25 DAS significantly reduced the weed population in celery nursery.

Download Full-text